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SM_ESIE07-08_ERX100~140A8V3B, ERX125

1. a d8H deH de dZH 99999 d H dSH dEH dbH Ned E Nid WIX div ZHOS A0EZ 00 N E Aldd NS HAMOd gt y en an 2TW27816 1 1010 Part 1 System Outline 1 56 ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board Main PS Switching power supply A1P A3P A2P Printed circuit board Noise filter Q1RP Phase reversal detect circuit A3P Printed circuit board Inv R10 Resistor current sensor A4P A4P Printed circuit board Fan R50 R59 Resistor BS1 BS5 Push button switch R95 Resistor Current limiting Mode set return test reset RIT Thermistor Air A1P X18A C1 Capacitor R1T Thermistor Fin A3P X111A C63 C66 Capacitor R2T Thermistor Suction DS1 DS2 Dip switch R3T Thermistor M1C discharge E1HC Crankcase heater R4T
2. 5 Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction 2 1 2 3 4 og EEE alee tsa ala ea aa ead ie al eae a a em S T T T T TTITTITTIlllltlldldllll tlllll L2 x EEEE e o tel ojojo e ele L4 cca o xio o e ol o o y ele L5 cca ollo w ee o o 3 ele L5 3 e o ol e y o x L8 cca kje ele y e ol o o 3 ele XK ojo ee e 3 x 11 3 ojo o x 0 XK ojo 0 kx 3 e o L9 ik je o x ele o o y ele XK ojo o o 3 x XK ojo o jo 3 x 0 LC ca we el ele y ele le ol e Display of contents of Display of contents of Display 1 of Display 2 of malfunction first malfunction second malfunction in detail malfunction in detail digit digit 1 O Master BC Slave1 Bt Slave2 a S BC System 3 18 Part 3 Troubleshooting ESIE07 08 Troubleshooting Contents of malfunction Malfunction code lt Monitor mode gt Open phase Power supply Imbalance of inverter power supply P1 imbalance voltage To enter the monitor mode push the Faulty temperature sensor inside Faulty thermistor of inverter box P3 MODE BS1 button when in switch box
3. General Compressor operations vary with the following steps according to information in Compressor Pl Control ERX125 250A7W1B ERX125A7W1B ERX200A7W1B ERX250A7W1B INV Inverter INV Inverter INV Inverter SIDA STEP No compressor STEP No compressor STEP No compressor Standard compressor 1 52 Hz 1 52 Hz 1 52 Hz OFF 2 56 Hz 2 56 Hz 2 56 Hz OFF 3 62 Hz 3 62 Hz 3 62 Hz OFF 4 68 Hz 4 68 Hz 4 68 Hz OFF 5 74 Hz 5 74 Hz 5 74 Hz OFF 6 80 Hz 6 80 Hz 6 80 Hz OFF 7 88 Hz 7 88 Hz 7 88 Hz OFF 8 96 Hz 8 96 Hz 8 96 Hz OFF 9 104 Hz 9 104 Hz 9 104 Hz OFF 10 110 Hz 10 110 Hz 10 110 Hz OFF 11 116 Hz 11 116 Hz 11 116 Hz OFF 12 124 Hz 12 124 Hz 12 124 Hz OFF 13 132 Hz 13 132 Hz 13 132 Hz OFF 14 144 Hz 14 144 Hz 14 144 Hz OFF 15 158 Hz 15 158 Hz 15 158 Hz OFF 16 166 Hz 16 166 Hz 16 166 Hz OFF 17 176 Hz 17 176 Hz 17 176 Hz OFF 18 188 Hz 18 188 Hz 18 188 Hz OFF 19 202 Hz 19 202 Hz OFF 20 210 Hz 20 210 Hz OFF 21 218 Hz 21 52 Hz ON 22 232 Hz 22 62 Hz ON 23 248 Hz 23 68 Hz ON 24 266 Hz 24 74 Hz ON 25 80 Hz ON 26 88 Hz ON 27 96 Hz ON 28 104 Hz ON 29 116 Hz ON 30 124 Hz ON 31 132 Hz ON 32 144 Hz ON 33 158 Hz ON 34 176 Hz ON 35 188 Hz ON 36 202 Hz ON 37 210 Hz ON 2 18 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept ERX100 140A8V3B STn INV
4. electronic type ERX100A8V3B ERX125A8V3B ERX140A8V3B Nominal Capacity Cooling 11 8 14 2 15 8 Power input Cooling 3 52 4 33 4 98 EER Cooling 3 35 3 28 3 17 Maximum numbers of indoors 1 1 1 Casing Colour Daikin white Daikin white Daikin white Material Painted galvanised steel Painted galvanised steel Painted galvanised steel Dimensions Packing Height mm 1524 1524 1524 Width mm 980 980 980 Depth mm 420 420 420 Unit Height mm 1345 1345 1345 Width mm 900 900 900 Depth mm 320 320 320 Weight Unit kg 125 125 125 Packed unit kg 130 130 130 Heat exchanger Specifications Length mm 857 857 857 N of rows 2 2 2 Fin pitch mm 2 2 2 N of passes 10 10 10 Face area mm 1 131 1 131 1 131 N of stages 60 60 60 Empty tubeplate hole 0 0 0 Tube type Hi XSS 8 Hi XSS 8 Hi XSS 8 Fin Type Non symmetric waffle Non symmetric waffle Non symmetric waffle Treatment Corrosion resistant Corrosion resistant Corrosion resistant Fan Type Propeller Propeller Propeller Quantity 2 2 2 Air flow rate Cooling m m 106 106 106 nominal at in Heating mim 102 105 105 in Discharge direction Horizontal Horizontal Horizontal Motor Quantity 2 2 2 Model Brushless DC motor Brushless DC motor Brushless DC motor Speed nominal Cooling 850 815 rpm 850 815 850 815 850 815 Heating 820 785 rpm 820 785 840 805 840 805 Drive Direct drive Direct drive Direct drive Output Ww 70 70 70 Compressor Quantity 1 1 1 M
5. 5 4 Check No 3 Check for Causes of Rise in High Pressure Referring to the Fault Tree Analysis FTA shown below probe the faulty points Stop valve closed Check to be sure the stop valve is open Local High pipe z Conduct visual checks for pipe pressure rise resistance Bent or crashed pipe conditions f i Is there any temperature difference Clogging of foreign particles _ caused before and after the filter or branch pipe In cooling Faulty outdoor If the outdoor unit unit motorized Faulty valve coil Are the coil resistance and insulation electronic expansion valve normal valve is throttled At i See 1 diference in excess of Faulty valve body a C between the inlet s enon and e outlet is deemed salda DA Faulty high pressure sensor Are the electrical characteristics normal Faulty control Faulty high Is the pressure value checked with the pressure Faulty control PCB Service Checker corresponding to the control measurement of the pressure sensor Is the suction air temperature not more In cooling High suction Short circuit than 43 C ERX125 250A7W1 46 C air ERX100 140A8V3 High suction emparar of Is the outdoor temperature not more temperature lala High ambient temperature k than 43 X ERX125 250A7W1 46 C of the ERX100 140A8V3 condenser Degradation 2 in condensing E Dirty condenser Is the heat exchanger clogged
6. Malfunction Operation Inspection Unit No Malfunction contents See code lamp display page L4 ccs Malfunction of inverter radiating fin temperature rise 3 75 L5 3 y Cs Inverter compressor motor grounding short circuit 3 77 L8 Cs Inverter current abnormal 3 80 5 L9 xe xy 3 Inverter start up error 3 83 5 LA m7 v7 Malfunction of power unit 8 LC 3 E E Malfunction of transmission between inverter and 3 86 2 control PC board O P1 3 y 3 Inverter over ripple protection 3 90 P4 3 3 ECS Malfunction of inverter radiating fin temperature rise 3 93 sensor PJ xy xy 3 Faulty combination inverter and fan driver 3 95 Malfunction of capacity setting UO xX o 3 Low pressure drop due to refrigerant shortage or 3 98 electronic expansion valve failure U1 xy xe i Reverse phase open phase 3 103 U2 ces Power supply insufficient or instantaneous failure 3 104 U3 3 3 3 Check operation is not conducted 3 109 U4 Cs Malfunction of transmission between control box and 3 110 outdoor units U5 E E 3 Malfunction of transmission between remote 3 112 a controller and control box N U5 o xX e Failure of remote controller PC board or setting 3 112 during control by remote controller U8 y 3 o Malfunction of transmission between master and 3 114 slave remote controllers malfunction of slave remote controller UA Excessive number of control boxes etc 3 115 UH 3 E Cs Malf
7. sensor S1NPH Electronic expansion valve Y2E Solenoid valve Y 15 m Hot gas bypass E a Thermistor liquid pipe R6T Liquid stop valve DF Thermistor coil R4T Gas stop valve Low pressure sensor S1PL Solenoid valve Y2S Inverter compressor accumulator oil return M1C 2PW28402B Part 1 System Outline General Outline Outdoor Units ESIE07 08 1 8 ERX250A7W1B Functional Parts Layout Plan Accumulator assy Heat exchanger assy N R J iy A A Wo Pressure switch S1PH A o high pressure protection o y O 1 Pressure switch S2PH o high pressure protection Vacuuming and Thermistor M2C discharge pipe dehydration ports R32T Thermistor M1C discharge pipe R31T
8. Graph Outdoor unit PC board A1P 5V X32A O X17A 5 Red 5 Black 3 GND 3 ES g 2 E Microcomputer A D input M White F L 2 Measure DC voltage here 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on page 2 6 Note Connector X32A for ERX125 250A7W1B connector X17A for ERX100 140A8V3B Part 3 Troubleshooting 3 71 Error Codes Outdoor Units ESIE07 08 3 21 UL Outdoor Unit Malfunction of Low Pressure Sensor Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A C ra ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected from pressure detected by low pressure sensor When the low pressure sensor is short circuit or open circuit Defect of low pressure sensor system Connection of high pressure sensor with wrong connection Defect of outdoor unit PC board pressure sensor is connected to X31A X18A of outdoor unit PC board NO gt Connect low pressure sensor property and restart system relationship between the 1 VL and low pressure is normal see 2 when voltage is measured between X31A X18A pins 2 and 3 of outdoor unit PC board A1P see 1 YES gt Replace outdoor unit PC board A1P gt Replace the low pressure sens
9. ON OFF button Malfunction code Note 1 Pressing the INSPECTION TEST button will blink the check indication 2 While in check mode pressing and holding the ON OFF button for a period of five seconds or more will clear the failure history indication shown above In this case on the codes display the malfunction code will blink twice and then change to 00 Normal the Unit No will change to 0 and the operation mode will automatically switch from check mode to normal mode displaying the set temperature Part 3 Troubleshooting 3 9 Troubleshooting ESIE07 08 1 5 Operation of The Remote Controller s Inspection Test Operation Button Unit 0 gt Malfunction code LO Inspection Normal display No display Malfunction code blinks when a malfunction occurs Y Inspection test Push the button operation Y Unit 0 074 Capacity coda Example of capacity code display Malfunction code LO 07 1 Capacity code i Inspection F Indoor unit system code Example model Display n ionmod i C Indoor unit type code pes J Progression code FXCQ25 028 AA a ne Oe ee a ce FXFQ63 071 Inspection test Pus
10. ESIE07 08 Introduction 1 4 Combination Overview Outdoor Units of the ERX series System A The table below shows the Combination table control box Outdoor unit Control box Class Model EKEXDCBV3 EKEXFCBV3 EKEXDCBAV3 EKEXFCBAV3 EKEXMCBV3 125 ERX125A7W1B P P z z System A C O 3ph 200 ERX200A7W1B 2 P P 250 ERX250A7W1B z J P P 100 ERX100A8V3B P P P P System A C O 1ph 125 ERX125A8V3B P P P P 140 ERX140A8V3B P P P P The table below shows the Combination table valve kit Outdoor unit Valve kit Class Model name EKEXV50 EKEXV63 EKEXV80 EKEXV100 EKEXV125 EKEXV140 EKEXV200 EKEXV250 125 ERX125A7W1B 2 P P P P P E Lo A l3ph 200 ERX200A7W1B z 5 z P P P P P 250 ERX250A7W1B z P P P P 100 ERX100A8V3B 2 P P P P z System A C O 1ph 125 ERX125A8V3B P P P P 140 ERX140A8V3B 5 P P P y E System B The table below shows the Combination table control box Outdoor unit Control box Class Model EKEXDCBAV3 EKEXFCBAV3 EKEXMCBV3 5hp RXQ5D7W1B n 8hp RXQ8D7W1B n 10 hp RXQ10D7W1B n System B c o 3ph 12hp RXQ12D7W1B n 14 hp RXQ14D7W1B n 16 hp RXQ16D7W1B n 18 hp RXQ18D7W1B n The table below shows the Combination table valve kit Outdoor unit Valve kit Class Model name EKEXV50 EKEXV63 EKEXV80 EKEXV100 EKEXV125 EKEXV140 EKEXV200 EKEXV250 Shp RXQ5D7W1B n n n n n n n n 8hp RXQ8D7W1B n n n n n n n n 10 hp RXQ10D7W1B n n n n n n n n System B C
11. Part 4 Commissioning and Test Run ESIE07 08 Field settings DS No Item Contents DS2 2 Model setting Make the following settings according to models of outdoor unit All models are set to OFF at factory DS2 3 ERX125A7W1 ERX200A7W1 ERX250A7W1 DS2 2 OFF OFF ON DS2 3 OFF ON ON DS2 4 DS2 4 OFF OFF OFF Note If the DS1 1 1 4 DS2 2 2 4 setting has not been carried out error code UA are displayed and unit can not be operated Detail of DS1 1 4 DS2 1 4 setting for Overseas general Unit Setting method E represents the position of switches DS1 DS2 ERX125A7W1B ee i i ii Set DS2 1 to OFF 1234 1234 DS1 DS2 ERX200A7W1B a In i i i Set DS2 1 and DS2 3 to OFF 1234 1234 DS1 DS2 ERX250A7W1B ps i i i I i Set DS2 1 DS2 2 and DS2 3 to OFF 1234 1234 Part 4 Commissioning and Test Run 4 9 Field settings ESIE07 08 1 4 3 Setting by Dip Switches ERX100 140A8V3B Using dip switches The following field settings are made by dip switc hes on PC board on the PC board Dipswitch No Setting Setting item Description OFF Factory set change over set DS1 1 ON Cool Heat DS1 2 ON Not used OFF Factory set Do not change the factory settings D
12. Graph Outdoor unit PC board A1P 5V T X18A 4 Red 3 2 A 2 GND 3 Black o AD 7 1 gt Microcomputer A D input D White a A z D s 2 Measure voltage here Notes 1 Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on page 2 6 3 102 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 4 UY Reverse Phase Open Phase ERX125 250A7W1B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A ES ERX125 250A7W1B The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged When a significant phase difference is made between phases Power supply reverse phase Power supply open phase Defect of outdoor PC board A1P There is an open phase at YES the power supply terminal gt Fix the open phase Requires section X1M of the outdoor unit inspection of field power supply section Operation is normal if one place of power supply line phase is replaced YES gt Reverse phase Counter measure of the problem is completed by phase replacement gt Replace the outdoor unit PC board A1P Be sure to turn off power switch before connect or discon
13. Turn ON the power supply and then check whether or not the malfunction recurs Power ON YES gt Faulty radiation from the switch box Conduct the checks shown below e Radiation fin for stains e Airflow for interference e Fan propeller for damage e Whether or not outdoor temperature is too high gt Replace the inverter PCB gt End of measures e It is supposed that radiation fin temperature has risen due to on site causes Conduct the checks shown below e Radiation fin for stains e Airflow for interference e Fan propeller for damage e Whether or not outdoor temperature is too high Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 75 Error Codes Outdoor Units ESIE07 08 X111A EH connector white Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Troubleshooting ERX100 140A8V3B The radiator fin temperature is YES gt sg supposed to have risen to Faulty heat radiation of power unit 83 C or more e Air suction opening blocked e Dirty radiator fin e High outdoor temperature Is the connector X111A of the fin thermistor properly connected to the Properly connect outdoor PCB YES Turn ON the power supply and then press the remote controller check button o
14. lt The system for air tight test and vacuum drying gt Referring to the figure below connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit The shutoff valve and valve A C in the figure below should be open or closed as shown in the table below Liquid side shutoff valve Refrigerant charge port Gas side shutoff valve Outdoor Shutoff valve service port Gouge manifold Nitrogen To indoor unit with siphon Interunit pipings lt gt Gas flow Valve shutoff valve of valve A B and C and shutoff valves A B C Liquid side Gas side Air tight test Vacuum drying Close J Open Open Close Close Close valve A and shutoff valves certainly Otherwise the refrigerant in the unit are released Note The airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports See the R 410A Label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right See Shutoff valve operation procedure for details on handling the shutoff valve Refer to page 4 22 The refrigerant charge port is connected to unit pipe Caution Label When shipped the unit contains refrigerant so use caution when attaching the charge hose 4 20 Part 4 Commissioning and Test Run ESIE07 08 Test Operation
15. 2TW27146 1 POSITION IN SWITCH BOX 1 64 Part 1 System Outline ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board TIR Transformer 220V 21 8V A2P Printed circuit board for voltage conversion X1M Terminal block A3P Printed circuit board Power supply X2M Terminal block F1U Fuse 250V F5A A1P X3M Terminal block F2U Fuse 250V T1A A3P Y1E Electronic expansion valve F3U Field fuse X1M R1 R2 Thermistor Liquid HAP Light emitting diode Service monitor green X1M R3 R4 Thermistor Gas K1R Magnetic relay Operation Compressor X1M Y1 Y6 Expansion valve ON OFF X2M P1 P2 Communication remote controller K2R Magnetic relay Error status X2M C1 C2 Output Error status KAR KPR Magnetic relay X2M C3 C4 Output Operation Compressor ON OFF Q1DI Earth leakage breaker X2M T1 T2 Input ON OFF R2T Thermistor Liquid X2M F1 F2 Communication outdoor R3T Thermistor Gas X2M C5 C6 Input 0 10V DC Capacity control Notes 2 Use copper conductors only BLK black BLU blue BRN brown GRN green RED red WHT white YLW yellow ORG orange GRY grey PINK pink N neutral L live 0 Connector m Connector 8 Wire lamp Protective earth screw Separate component En Optional Accesory ggg Field wiring Part 1 System Outline 1 65 Wiring Diagrams Outdoor Units ESIE07 08
16. ZHOS AOEZ OOP NE y AlddNS YIMOd Naan a8 IX ns 1410 2TW27826 1 Part 1 System Outline 1 58 ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board Main M1F Motor Fan A2P Printed circuit board Noise filter PS Switching power supply A1P A3P A3P Printed circuit board Inv Q1RP Phase reversal detect circuit A4P Printed circuit board Fan R10 Resistor current sensor A4P A5P A6P Printed circuit board Current sensor R50 R59 Resistor BS1 BS5 Push button switch R95 Resistor Current limiting Mode set return test reset RIT Thermistor Air A1P X18A C1 Capacitor R1T Thermistor Fin A3P X111A C63 C66 Capacitor R2T Thermistor Suction DS1 DS2 Dip switch R31T R32T Thermistor M1C M2C discharge E1HC E2HC Crankcase heater R4T Thermistor Heat exc deicer FSU Field fuse R5T Thermistor Heat exc subcool outlet F1U Fuse 8A 250V A4P R6T Thermistor Liq pipe F1U F2U Fuse T 3 15A 250V A1P S1NPH Pressure sensor High F400U Fuse T 6 3A 250V A2P S1NPL Pressure sensor Low H1P H8P Pilot lamp serv monitor orange S1PH S2PH Pressure switch High H2P prepare test nn flickering T1A Current sensor A6P H2P Malfunction detection light up SD1 Safety devices input HAP Pilot lamp VIR Power module A4P Service mo
17. 4 12 Part 4 Commissioning and Test Run ESIE07 08 Field settings 1 7 Check Operation Detail ERX125 250A7W1B CHECK OPERATION FUNCTION Press the MODE button BS1 once and set to SETTING MODE 1 H1P OFF LED display H1P H7P O ON OFF 0 BLINK Unit stopping 000000 Press the TEST button for 5 seconds Step 1 Pressure equalizing 000000 10 sec to 10 minutes Y Step 2 Cooling start control 0000000 20 sec to 2 minutes Step 3 Stability waiting operation 0000000 10 minutes Y Step4 8 i ala coli e Stop valve close check pi 900000 e Wrong wiring check 000000 e Correct Refrigerant charge check e Piping length check e 900000 hd coo 000000 Y Step 9 Pump down residual operation 000000 5 minutes Y Step 10 Standby for restarting 00000090 5 minutes Y Completion Part 4 Commissioning and Test Run 4 13 Field settings ESIE07 08 1 8 Check Operation Detail ERX100 140A8V3B To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of electronic expansion valve CHECK OPERATION FUNCTION Step 1 Step 2 Step 3 4 Step4
18. IN3NO4NOO Ma LON xo TOULNO9 b o 7 oF t SONVHLNS SHIM TWNIWHAL n HOSSAUNOI JO NOILISOd a m o T 340 ssa psa ese zsa isa ia NO o a a o sa dH dSH dEH diH Es d8H 9 9 9 9 d9H dvH dzH ra 2TW27776 1 Part 1 System Outline 1 60 ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board Main M2F Motor Fan lower A2P Printed circuit board INV PS Power supply switching A3P Printed circuit board Noise filter R1 Resistor BS1 BS5 Push button switch R2 Resistor Mode set return test reset RAT Thermistor A
19. Part See page Part 1 System Outline 1 1 Part 2 Functional Description 2 1 Part 3 Troubleshooting 3 1 Part 4 Commissioning and Test Run 4 1 Part 5 Disassembly and Maintenance 5 1 The introduction contains the following topics Topic See page 1 2 Safety Cautions ii 1 3 Precautions on Handling New Refrigerant R410A vii 1 4 Combination Overview Outdoor Units of the ERX series xvii 1 5 Physical Limitations and Limits of Operation xix 1 6 External Appearance Outdoor Units xxi Introduction ESIE07 08 1 2 Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work pers The caution items are classified into Warning and Caution The Warning items are especially important since they can lead to death or serious injury if they are not followed closely The Caution items can also lead to serious accidents under some conditions if they are not followed Therefore be sure to observe all the safety caution items described below About the pictograms A This symbol indicates an item for which caution must be exercised The pictogram shows the item to which attention must be paid O This symbol indicates a prohibited action The prohibited item or action is shown inside or near the symbol This symbol indicates an action that must be taken or an instruction The instruction is shown in
20. ESIE07 08 Introduction Warning When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Cautions Caution Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combus tible gas leaks If a combustible gas leaks and remains around the unit it can cause a fire Be sure to install the packing and seal on the installation frame properly If the packing and seal are not installed properly water can enter the room and wet the furniture and floor For integral units only 1 2 3 Inspection after Repair Warning Warning Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet all the way If the plug has dust or loose connection it can cause an electrical shock or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires can cause an electrical shock excessive heat gen eration or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it can cause an electrical shock excessive hea
21. 3sn3 Ne Houms 1 JAVA NOISNVdX3 OINOYL9313 LINN HOOGLNO i HOLIMS NIYW 1 AlddNS HIMOd LIM NATIVA HOLIMs 3TW28079 2 Part 1 System Outline 1 70 ESIE07 08 Wiring Diagrams Outdoor Units Notes Symbols NO A FF WwW ND oo All wiring components and materials to be procured on the site must comply with the applicable local and national codes Use copper conductors only For details see wiring diagram Install a circuit breaker for safety All field wiring and components must be provided by a licensed electrician Unit shall be grounded in compliance with the applicable local and national codes Wiring shown are general points of connection guides only and are not intended for or to include all details for a specific installation Be sure to install the switch and the fuse to the power line of each equipment Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources 10 For detailed control box side connection see control box manual and wiring diagram 11 For detailed pipe connections and limitations see manuals HH Wiring Refrigerant piping Part 1 System Outline 1 71 ESIE07 08 Outdoor Units lagrams D iring WwW Field
22. ACCUMULATOR High pressure sensor Check valve oa A 2 ES Zo 28 E Oz o High pressure switch Compressor Solenoid valve IX Low pressure sensor Stop valve With service port on on site piping side t7 9mm flare connection 4TW27305 1 1 38 Part 1 System Outline ESIE07 08 Functional Diagrams Components The table below contains the different components of the functional diagrams No Symbol Name Function remark A M1C Inverter compressor INV Inverter compressor is operated on frequencies between 52Hz and 188Hz by using the inverter The number of operating steps is as follows when Inverter compressor is operated ERX125 18 steps D M1F Inverter fan Since the system is of air heat exchanging type the fan is operated at 9 step rotation speed by using the inverter G Y1S Solenoid valve Hot gas SVP Used to prevent the low pressure from transient falling J Y2S Solenoid valve Oil return Used to return oil from the accumulator to the compressor SVO K Y4S Solenoid valve Injection SVT Used to cool the compressor by injecting refrigerant when the compressor discharge temperature is high N S1NPH High pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV In order to prevent the
23. gt Others mode mode Service settings can be made Forced fan ON o Air flow direction volume setting Depress Inspection Test Operation ress Inspection Test Operation button once button for more than 4 seconds Normal mode fo Press Inspection Test Operation button once Or after 30 minutes Press Inspection Test Operation button once Following codes can be checked a Test Malfunction codes Inspection Oe operation Thermostat is forcibly turned on Control box model code mode mode Outdoor model code Press Inspection Test Operation button once After 10 seconds 3 8 Part 3 Troubleshooting ESIE07 08 Troubleshooting 1 4 Self diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction the remote controller s operation LED blinks and malfunction code is displayed Even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered The malfunction code enables you to tell what kind of malfunction caused operation to stop See page 3 14 for malfunction code and malfunction contents Display of indoor unit for which a malfunction has been detected Inspection display Inspection Test button Operation LED DAIKIN UNIT No 11 Li mo md
24. Part 3 Troubleshooting 3 77 Error Codes Outdoor Units ESIE07 08 Troubleshooting sa The insulation resistance is low i e not more than 100k0 y NO YES gt Replace the compressor Check the compressor motor coil for any broken wire Some phase has a broken wire Check the power transistor on the inverter PC board using a multiple tester For details refer to information in the Check for power transistor on page 4 6 The power transistor has an abnormality NO YES gt A3P Replace the inverter Make wire connections according to the Wiring Diagram Restart the compressor and then check whether or not the malfunction recurs YES NO PCB gt Normal Replace the inverter PCB Restart the compressor and then check whether or not the malfunction recurs YES NO e On site causes such as instantaneous power failure or open phase e Conduct checks and diagnosis of the compressor gt End of work gt Replace the compressor e Conduct checks and diagnosis of the compressor ERX125 250A7W1B Power OFF Power ON Power OFF Power ON Caution occurred Be sure to turn off power switch before connect or disconnect connector or parts damage may be 3 78 Part 3 Troubleshooting ESIE07
25. Setting mode 1 Faulty temperature sensor of Faulty thermistor of inverter fin P4 inverter radiation fin Incorrect combination of Inverter Incorrect combination of inverter PJ and fan driver Incorrect combination of fan driver 1 Refer for Monitor mode Incorrect combination of fan driver 2 Gas shortage Gas shortage alarm UO lt Selection of setting item gt Reverse phase Reverse phase error U1 Abnormal power supply voltage Insufficient Inverter voltage U2 Push the SET BS2 button and set Inverter open phase phase T the LED display to a setting item Charging error of capacitor in inverter main circult No implementation of test run U3 Refer for Monitor mode Transmission error between I O transmission error U4 indoor and outdoor unit I O transmission error A A 2 Transmission error between Sequential startup ADP alarm U7 lt Confirmation of malfunction 1 gt outdoor units transmission error Sequential startup ADP malfunction U7 between thermal storage units E oo Push the RETURN BS3 button duplication of IC address Malfunction of transmission between A TE arr multi units Multi 1 once to display First digit of RCTS a alfunction of transmission between malfunction code multi units Multi 2 Abnormal multi horsepower setting Abnormal multi address setting Excessive multi connections Multi system malfunction Transmission error of other Indoor unit system abnormal in other u9 lt Confirmation of malfunction 2 gt syste
26. deH 1 dZH Part 3 Troubleshooting diH dZH d9H dSH Display 1 of dvH ojo o er ojo o er ojo o er ojo o o ojo o o 1 ojo o o 7 ojo e o ojo o er ojo o er ojo o e 1 ojo o er ojo o er ojo o er ojo e o 1 ojo o o ojo o ee ojo o er ojo o er ee o E ojo o El ee o we ojo o Hi ojo o er ojo o er ojo o o 1 ojo e o 1 ojo o Hi ojo o Hi ojo o xi ee o we ojo o 1 ojo o 1 ojo o er ojo o er malfunction in detail deH dZH diH dZH d9H dSH digit N dvH o ojo lx se EKE SE AES 4 eles XX ee o o ee o 7 o ee 7 e e ele eles EE TEE RS Kiele X He e ee Le Se O ee AEK AE AKG Display of contents of malfunction second deH dZH diH Troubleshooting dZH d9H dSH Wie o o y EL e JEG Display of contents of malfunction first digit deH dZH Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction diH apo uogoungen P1 P3 P4 PJ UO U1 U2 U3 U4 U7 U7 U9 UA UA UH UJ UJ UF 3 20 ESIE07 08 Troubleshooting 1 10 Malfu
27. with hand after disconnect the Check No 5 Check on connector of fan motor Are the resistances between pins above judgment NO outdoor unit gt Replace the fan motor of outdoor unit gt Replace outdoor unit PC See also Check No 5 on page 3 124 board Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 53 Error Codes Outdoor Units ESIE07 08 3 8 ES Outdoor Unit Malfunction of Moving Part of Electronic Expansion Valve Y1E Y2E for ERX125 250A7W1B Y1E Y3E for ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes mi La ERX125 250A7W1B ERX100 140A8V3B Check disconnection of connector Check continuity of expansion valve coil Error is generated under no common power supply when the power is on Defect of moving part of electronic expansion valve Defect of outdoor unit PC board A1P Defect of connecting cable Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting Turn power supply off and turn power supply on again Return to normal YES gt External factor other than malfunction for example noise N etc Electronic expansion valve is NO connected to X26A X21A
28. 4 9 US Indoor Unit Malfunction of Transmission between Remote Controller and Indoor Unit Error code Applicable Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting All models of indoor units In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal Normal transmission does not continue for specified period Malfunction of indoor unit remote controller transmission Connection of two main remote controllers when using 2 remote controllers Defect of indoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise SS1 of both remote controllers is set to MAIN YES Using 2 remote Set one remote controller to controllers control SUB turn the power supply off once and then back on Operation returns to normal when the power is turned off momentarily Indoor PC board microcomputer Replace indoor unit PC board gt There is possibility of Replace the remote controller malfunction caused by noise Check the surrounding area YE Normal S gt Normal NO Replace the indoor unit PC board YE Nome S gt Normal NO gt There is possibility of malfunction caused by noise Chec
29. 5 8 Field Wiring for ERX125 250A7W1B Field wiring The illustration below shows the wiring diagram of the unit POWERSUPPLY L1L2L3 N OUTDOOR UNIT L1 L2 L3 SWITCH W POWERSUPPLY LN FUSE MAIN SWITCH A 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE pone L SWITCH 4 FUSE CONTROL BOX LO L N 2 WIRES CABLE POWER LINE 3TW27809 1 1 66 Part 1 System Outline ESIE07 08 Wiring Diagrams Outdoor Units Notes NO A fF WwW ND oo 10 11 All wiring components and materials to be procured on the site must comply with the applicable local and national codes Use copper conductors only As for details see wiring diagram Install circuit breaker for safety All field wiring and components must be provided by licensed electrician Unit shall be grounded in compliance with the applicable local and national codes Wiring shown general points of connection guides only and are not intended for or to include all details for a specific installation Be sure to install the switch and the fuse to the power line of each equipment Install the main switch that can interrupt all the power sources in an in
30. Symbol Name Function remark A M1C Inverter compressor INV Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using the inverter 31 steps D M1F Inverter fan Since the system is of air heat exchanging type the fan is operated at 8 step rotation M2F speed by using the inverter E Y1E Electronic expansion valve Fully open during cooling Main EV1 F Y3E Electronic expansion valve PI control is applied to keep the outlet superheated degree of subcooling heat Subcool EV3 exchanger constant G Y2S Solenoid valve Hot gas SVP Used to prevent the low pressure from transient falling H Y3S Solenoid valve Unload circuit Used to the unloading operation of compressor SVUL M Y1S Four way valve Used to switch the operation mode between cooling and heating N S1NPH High pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV In order to prevent the increase of high pressure when a malfunction occurs this compressor switch is activated at high pressure of 4 0 MPa or more to stop the compressor opera tion S Fusible plug In order to prevent the increase of pressure when abnormal heating is caused by fire or others the fusible part of the plug is molten at a temperature of 70 to 75 C to release the pressure into the atmosphere T Pressure regulating valve 1 This valve opens at a pressure of 4 0 MPa for prevention of press
31. A Remote controller displays malfunction code Malfunction Installation error Remedial action code E3 E4 The shutoff valve of the outdoor Open the shutoff valve F3 F6 unit is left closed UF U1 The phases of the power to the Exchange two of the three phases L1 L2 L3 to outdoor unit is reversed make a proper connection U1 No power is supplied to an outdoor Make sure the power source wire is properly con U4 or indoor unit including phase nected to the outdoor unit and revise if necessary interruption LC UF There is conflict on the connection Check if the refrigerant piping line and the trans of transmission wiring in the sys mission wiring are consistent with each other tem E3 Refrigerant overcharge Recalculate the additional amount refrigerant F6 from the piping length and correct the refrigerant charge level by recovering any excessive refriger UF ant with a refrigerant recovery machine E4 Insufficient refrigerant Check if the additional refrigerant charge has F3 been finished correctly Recalculate the additional amount refrigerant from the piping length and add the adequate amount U7 U4 If the outdoor unit terminal is con Remove the line from the outdoor multi terminals UF UH nected when there is one outdoor Q1 and Q2 unit installed If any malfunction codes other than the above are displayed check the service manual for how to respond Never perform
32. Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Power OFF Ai ERX125 250A7W1B ERX100 140A8V3B Resistance of radiation fin thermistor is detected when the compressor is not operating When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while the unit operation is continued P4 will be displayed by pressing the inspection button Defect of radiator fin temperature sensor Defect of inverter PC board Disconnect the cable from the compressor and then check the compressor for the insulation resistance The insulation YES resistance is low i e not more than gt Replace the compressor Only for ERX125 250A7W1B Disconnect the cable from the fan and then check the fan motor for the insulation resistance The insulation resistance is low i e not more than 1MW YES gt Replace the fan motor Replace the fan driver PC board NO Power ON Caution A WV Remove and insert the fin thermistor connector X111A Turn ON the power supply and then check whether or not the malfunction recurs YES gt Replace the inverter PC board gt End Be sure to turn off power switch before connect or disconnect
33. In cooling capacity Mixing of non k ls air or else mixed in the refrigerant system condensable gas Can the fan motor be rotated with Faulty fan motor l hands Are the motor coil resistance and Decreased insulation normal fan output en Faulty control rate PC board If a spare PC board is mounted is the Including capacity setting properly made capacity setting High air Dirty filter Is the air filter clogged passage resistance Obstacle Is there any obstacle in the air passage Excessive refrigerant Is the indoor unit too small compared to the charging large sized outdoor unit Note 4 In cooling it is normal if the outdoor unit electronic expansion valve EV1 is fully open 3 122 Part 3 Troubleshooting ESIE07 08 Additional Checks for Troubleshooting 5 5 Abnormally low low pressure Low evaporating temperature Check No 4 Check for Causes of Drop in Low Pressure Referring to the Fault Tree Analysis FTA shown below probe the faulty points Faulty low pressure sensor le Are the electrical characteristics normal Faulty control PCB Is the pressure value checked with the Service Checker corresponding to the measurement of the pressure sensor Faulty low pressure sensor le Are the electrical characteristics normal Notes Faulty hot gas solenoid valve Are
34. OIL SEPARATOR Check valve High pressure sensor High pressure Stop valve With service port on on site piping side t7 9mm flare connection 4TW27325 1A 1 42 Part 1 System Outline ESIE07 08 Functional Diagrams Components The table below contains the different components of the functional diagrams No Symbol Name Function remark A M1C Inverter compressor INV Inverter compressor is operated on frequencies between 52Hz and 210Hz by using B M2C Standard compressor 1 the inverter while Standard compressor is operated with commercial power supply STD1 only The number of operating steps is as follows when Inverter compressor is oper ated in combination with Standard compressor ERX250 37 steps D M1F Inverter fan Since the system is of air heat exchanging type the fan is operated at 9 step rotation speed by using the inverter F Y2E Electronic expansion valve PI control is applied to keep the outlet superheated degree of subcooling heat Subcool EV3 exchanger constant G Y1S Solenoid valve Hot gas SVP Used to prevent the low pressure from transient falling J Y2S Solenoid valve Oil return Used to return oil from the accumulator to the compressor SVO N S1NPH High pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV
35. Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equip ment The use of inappropriate parts or tools can cause an electrical shock exces sive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installation work is not conducted securely the equipment can fall and cause injury Be sure to install the product correctly by using the provided standard installa tion frame Incorrect use of the installation frame and improper installation can cause the equipment to fall resulting in injury For integral units only Be sure to install the product securely in the installation frame mounted on a window frame If the unit is not securely mounted it can fall and cause injury For integral units only Be sure to use an exclusive power circuit for the equipment and follow the technical standards related to the electrical equipment the internal wiring reg ulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire Be sure to use the specified cable to connect between the indoor and outdoor uni
36. gt Replace the compressor Disconnect the cable from the fan and then check the fan motor for the insulation resistance The insulation resistance is low i e not more than 1MQ YES gt Replace the fan motor connectors shown below Fan 1 Check for connector connections Remove and insert the Fan 2 e A1P X28A lt gt X6A A3P e A1P X20A lt gt X4A A3P eA3PX5A lt gt X5A A4P e ASP X41A lt gt X3A A4P e A3P X61A lt gt X402A A2P e A3P X1A lt gt X403A A2P e A4P X4A Short connector e A4P X51A lt gt X5A A8P e A4P X4A lt gt X3A A8P 400U of the A2P has been molten Replace the fan driver PC board e A8P X4A Short connector Note X3A black X4A yellow Replace the noise filter of the A2P F400U APT We EE ee u SE MT NA mi SA Part 3 Troubleshooting 3 87 Error Codes Outdoor Units ESIE07 08 Troubleshooting Caution A Power ON e Is the micro controller normal NO monitor green of the A1P blinking The A3P A4P YES YES Check 10 or more seconds after the power supply is turned ON gt This is not LC Recheck for the malfunction code and A8P do not blink The A4P or YES gt A3P Replace the inverter PCB If the PCB replaced is badly damaged th
37. kJ kg kJ KgK Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 36 13 40 83 46 02 51 73 58 00 64 87 72 38 80 57 89 49 99 18 101 32 109 69 121 07 133 36 146 61 160 89 176 24 192 71 210 37 229 26 249 46 271 01 293 99 318 44 344 44 372 05 401 34 432 36 465 20 499 91 536 58 575 26 616 03 658 97 704 15 751 64 801 52 853 87 908 77 966 29 1026 5 1089 5 1155 4 1224 3 1296 2 1371 2 1449 4 1530 9 1615 8 1704 2 1796 2 1891 9 1991 3 2094 5 2201 7 2313 0 2428 4 2548 1 2672 2 2800 7 2933 7 3071 5 3214 0 3361 4 3513 8 3671 3 3834 1 4002 1 3992 7 4175 7 4166 8 viii ESIE07 08 Introduction 1 3 2 Refrigerant Cylinders Cylinder specifications Handling of cylinders The cylinder is painted refrigerant color pink The cylinder valve is equipped with a siphon tube Cylilinder Siphon tube Note 1 Refrigerant can be charged in liquid state with cylinder in upright position 2 Do not lay cylinder on its side during charging since it causes refrigerant in gas state to enter the system Laws and regulations R410A is liquefied gas and the High Pressure Gas Safety Law must be observed in handling them Before using refer to the High Pressure Gas Safety Law The Law stipulates standards and regulations that must be followed to prevent accidents with high pressure gases Be sure to follow the regulations Handing
38. thus outputting the malfunction code E3 Part 2 Functional Description 2 31 Outdoor Unit Functional Concept ESIE07 08 2 6 Low Pressure Protection Control General This low pressure protection control is used to protect compressors against the transient decrease of low pressure ERX125 250A7W1B Low pressure not limited Pe LP pressure sensor detection value for master unit Pe lt 0 34MPa Pe gt 0 39MPa Low pressure limited Hot gas SVP OFF y All STD compressors stop Pe lt 0 15MPa Pe gt 0 30MPa Pe lt 0 25MPa Hot gas SVP ON 52 Hz OFF OFF Pe lt 0 07MPa Low pressure standby L 4 gt When occurring 4 times within 30 min the malfunction code E4 is output 2 32 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept ERX100 140A8V3B Low pressure not limited Pe lt 0 25MPa Pe gt 0 39MPa Pe LP pressure sensor detection value Low pressure limited lo Hot gas SVP OFF Y Pe lt 0 15MPa Pe gt 0 30MPa 36Hz Unload Hot gas SVP ON Pe lt 0 07MPa Low pressure gt When occurring 3 times within 30 min the standby malfunction code E4 is output Part 2 Functional Description 2 33 Outdoor Unit Functional Concept ESIE07 08 2 7 Discharge Pipe Protection Con
39. 2PW28403B 1 14 Part 1 System Outline ESIE07 08 General Outline Outdoor Units Front view High pressure sensor S1NPH of pn Thermistor R5T sub cooling HIE 00 Electronic exp valve Y2E D AVISAN Jm ahs 7 HS ES i C G EE i Thermistor coil D R2T Ms J il O a Liquid stop valve E Som D 7 Thermistor coil HL 7 RAT gog y lye OG eo H y H y y Gas stop valve AS Solenoid valve Y2S Inverter compressor Standard compressor Accumulator oil ret
40. Abnormal heat exchanger Refrigerant over charge F6 lt Confirmation of malfunction 1 gt emperature Push the RETURN B53 button Faulty current sensor Faulty CT1 sensor J2 Tren ari Faulty CT2 sensor once to display III Faulty sensor of discharge pipe Faulty Tdi sensor short J3 malfunction code ban ure ge PIP E y aulty Tds1 sensor short Faulty Tds2 sensor short Faulty Tdi sensor open Faulty Tds1 sensor open Faulty Tds2 sensor open lt Confirmation of malfunction 2 gt ps of suction pipe Faulty Ts1 sensor short J5 Faulty Ts1 sensor open Push the SET BS2 button once to Detail Faulty Ts2 sensor short display Second digit of malfunction description Faulty Ts2 sensor open code on next Faulty sensor of heat exchanger Faulty Tb sensor short J6 page temperature Faulty Tb sensor open Malfunction of the liquid pipe Faulty Tl sensor short J7 temperature sensor Faulty TI sensor open Faulty sensor of subcool heat Faulty Tsh sensor short J9 exchanger temperature Faulty Tsh sensor open lt Confirmation of malfunction 3 gt Faulty sensor of discharge Faulty Pc sensor short JA Push the SET BS2 button once to hs Faulty Pc sensor open display malfunction location Faulty sensor of suction pressure Faulty Pe sensor short JC Faulty Pe sensor open Instantaneous power failure NO display on remote controller Judge L2 during compressor operation Inverter radiation fin temperature Over heating of inverter
41. Be sure to discharge the capacitor completely before conducting repair work A charged capacitor can cause an electrical shock Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug Plugging or unplugging the power cable plug to operate the equipment can cause an electrical shock or fire Caution Do not repair the electrical components with wet hands Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water Washing the unit with water can cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when clean ing the equipment The internal fan rotates at a high speed and cause injury Do not tilt the unit when removing it The water inside the unit can spill and wet the furniture and floor Be sure to check that the refrigerating cycle section has cooled down suffi ciently before conducting repair work Working on the unit when the refrigerating cycle section is hot can cause burns Use the welder in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency OMO OF Introduction ESIE07 08 1 2 2 Cautions Regarding Products after Repair Warning
42. Field Wiring for EKEXDCB A V3B 1 72 5 12 Field Wiring for EKEXMCBV3B 1 74 Part 1 System Outline 1 53 ESIE07 08 Wiring Diagrams Outdoor Units The illustration below shows the wiring diagram of the unit Wiring Diagram for ERX125A7W1B Wiring diagram 5 2 XO8 HOLIMS NI NOLLISOd ALN OLN 40 NOLLISOd TEPER d Le EE NO o a o d8H d9H drH dZH E99 diH dSH dEH diH 2TW27806 1 ned Dre me Nid VIX aat div Part 1 System O
43. Part 4 Commissioning and Test Run 4 15 Test Operation ESIE07 08 2 2 Installation Process ERX125 250A7W1B Below Figure shows the installation process Install in the order of the steps shown 3 Selection of Location V 4 Inspecting and Handling the Unit 7V 5 Placing the Unit y V 7 Field Wiring 6 Refrigerant Piping V 8 Airtight Test and Vacuum Drying 4 SN 9 Pipe Insulation 10 Checking of Device and Installation Conditions 11 Additional Refrigerant Charge and Check Operation i y Operations which require the power to be turned on 13 TestRun essa ee e y 4 16 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 3 Procedure and Outline ERX125 250A7W1B Contents Follow the following procedure to conduct the initial test operation after installation Topic See page 2 3 1 Check Work Prior to Turn Power Supply On ERX125 250A7W1B 4 18 2 3 2 Turn Power On ERX125 250A7W1B 4 19 2 3 3 Air Tight Test and Vacuum Drying ERX125 250A7W1B 4 20 2 3 4 Additional Refrigerant Charge and Check Operation ERX125 250A7W1B 4 22 Part 4 Commissioning and Test Run 4 17 Test Operation ESIE07 08 2 3 1 Check Work Prior to Turn Power Supply On ERX125 250A7W1B Check the below
44. When outdoor temperature gt 12 C it will run in Step 1 or higher Note Pc HP pressure sensor detection value For fan revolutions in each step see information on page 2 22 Part 2 Functional Description 2 21 Outdoor Unit Functional Concept ESIE07 08 2 3 6 Step Control of Outdoor Unit Fans General The outdoor unit fans revolutions vary with following steps listed in table below according to the condition changes described on page page 2 21 Fan revolutions ERX125 250A7W1B 5 STEP Fan revolutions rpm No ERX125A7W1B ERX200A7W1B ERX250A7W1B 0 0 0 0 1 285 350 350 2 315 370 370 3 360 400 400 4 450 450 460 5 570 540 560 6 710 670 680 7 951 760 821 8 951 796 821 Fan steps ERX100 140A8V3B Cooling M1F M2F STEPO 0 rpm 0 rpm STEP1 250 rpm 0 rpm STEP2 400 rpm O rpm STEP3 285 rpm 250 rpm STEP4 360 rpm 325 rpm STEP5 445 rpm 410 rpm STEP6 580 rpm 545 rpm STEP7 715 rpm 680 rpm STEP8 850 rpm 815 rpm 2 22 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 4 Special Control Content Topic See page 2 4 1 Startup Control 2 24 2 4 2 Oil Return Operation 2 25 2 4 3 Pump down Residual Operation 2 27 2 4 4 Standby 2 28 2 4 5 Stopping Operation 2 29 Part 2 Functional Description 2 23 Outdoor Unit Functional Concept ES
45. X6A Not Applicable X7A Y1E Electronic Expansion Valve X8A Not Applicable need to be short cut X9A Not Applicable X11A R3T Thermistors Gas X12A R2T Thermistors Liquid X13A R1T Thermistors Air X15A Not Applicable X16A Not Applicable X17A Not Applicable X18A KRP4 X2A Optional Connection X23A Not Applicable X24A Capacity To Set Capacity Class adaptor X30A X1M Terminal Strip T1 T2 F1 F2 P1 P2 Y1 Y2 Not Applicable L R N S Power Supply 1N 50Hz 230V The table below describes the PCB connectors for EKEXFCBV3 Connector Connected to Description X1A TIR Transformer 220V 21 8V X3A TIR Transformer 220V 21 8V X4A Not Applicable X6A K2R Magnetic Relay Error Status X7A Y1E Electronic Expansion Valve X8A Not Applicable need to be short cut X9A Not Applicable X11A R3T Thermistors Gas X12A R2T Thermistors Liquid X13A A2P X2A Printed Circuit Board For Voltage Conversion X15A Not Applicable X16A Not Applicable X17A Not Applicable X18A A2P X1A Printed Circuit Board For Voltage Conversion X23A Not Applicable X24A Capacity To Set Capacity Class adaptor X30A X2M Terminal Strip T1 T2 F1 F2 P1 P2 Y1 Y2 K1R Magnetic Relay Operation Compressor on off L R N S Power Supply 1N 50Hz 230V Part 1 System Outline 1 89 PCB Layout ESIE07 08 Voltage conversion PCB The illustration below shows the PCB connect
46. lt Front gt 20 or more O or more 7 600 or more 500 or more lt Front gt 10 or more lt Front gt 20 or more 1 IN 500 or more 10 or more 20 or more 10 or more _ e Pattern 2 100 or more 100 or more Ze z A A EET 50 or more 50 or more 100 or more 100 or more 50 or more Part 1 System Outline 1 19 General Outline Outdoor Units ESIE07 08 Notes 1 Heights of walls in case of Patterns 1 and 2 Front 1500mm Suction side 500mm Side Height unrestricted Installation space to be shown in this drawing is based on the cooling operation at 35 degrees outdoor air temperature When the design outdoor air temperature exceeds 35 degrees or the load exceeds maximum ability because of much generation load of heat in all outdoor unit take the suction side space more broadly than the space to be shown in this drawing h2 1500 mm lt Front gt b f Suction side h 500 mm eH 2 Ifthe above wall heights are exceeded then h2 2 and h1 2 should be added to the front and suction side service spaces respectively as shown in the figure below 3 When installing the units most appropriate pattern should be selected from those shown above in order to obtain the best fit in the sp
47. oe Display of contents of malfunction second jeje ee sj 3 3 xx 3 CREE 3 oe Display of contents of malfunction first digit E ES 37 El E3 E4 E5 E7 E9 H9 F3 F6 J3 J5 J6 J7 J9 JA JC L1 L4 L5 L8 L9 LC 3 22 ESIE07 08 Troubleshooting Contents of malfunction Malfunction code Open phase Power supply Imbalance of inverter power supply P1 imbalance voltage Faulty temperature sensor of Faulty thermistor of inverter fin P4 lt Monitor mode gt inverter radiation fin F F Ei Gas shortage Gas shortage alarm UO o enter the monitor mode push the mn er E Ab ly volt Insuffi tl t It U2 MODE BS1 button when in normal power supply voltage ns wen mer e age Setting mode mode 1 aulty cl arge of capacitor in main inverter circui Malfunction due to SP PAM overvoltage Malfunction due to P N short circuit No implementation of test run U3 Transmission error between I O transmission error U4 indoor and outdoor unit VO transmission error lt Selection of setting item gt Transmission error of other Indoor unit syste
48. 08 Error Codes Outdoor Units Troubleshooting ERX100 140A8V3B Caution A Compressor inspection The compressor s coil YES gt Replace the compressor is disconnected or the insulation is defective Disconnect the connection between the compressor and inverter Make the power transistor check mode setting ON by service mode Inverter output voltage check Inverter output voltage is not balanced YES gt Replace the inverter unit Normal if within 5V Must be measured when frequency is stable There is YES gt Correct power supply instantaneous power drop NO gt Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor Higher voltage than actual is displayed when the inverter output voltage is checked by tester Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 79 Error Codes Outdoor Units ESIE07 08 3 25 Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting L8 Outdoor Unit Inverter Current Abnormal ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected by current flowing in the power transistor When overload in
49. 3 21 82 2 26 23 21 85 21 37 73 3 16 3 11 84 2 12 24 20 90 20 45 74 3 06 3 01 oe ee 25 20 00 19 56 75 2 96 2 91 d 26 19 14 18 73 76 2 86 2 82 De in 27 18 32 17 93 77 2 77 2 72 94 4 55 28 17 54 17 17 78 2 68 2 64 96 146 29 16 80 16 45 79 2 60 2 55 30 16 10 15 76 80 2 51 2 47 24 Part 2 Functional Description ESIE07 08 General Functionality Outdoor unit thermistors for discharge pipe R2T ERX100 140A8V3B R3T R31 33T ERX125 250A7W1B kQ T C 0 0 0 5 T C 0 0 0 5 T C 0 0 0 5 0 640 44 624 65 50 72 32 70 96 100 13 35 13 15 1 609 31 594 43 51 69 64 68 34 101 12 95 12 76 2 579 96 565 78 52 67 06 65 82 102 12 57 12 38 3 552 00 538 63 53 64 60 63 41 103 12 20 12 01 4 525 63 512 97 54 62 24 61 09 104 11 84 11 66 5 500 66 488 67 55 59 97 58 87 105 11 49 11 32 6 477 01 465 65 56 57 80 56 75 106 11 15 10 99 7 454 60 443 84 57 55 72 54 70 107 10 83 10 67 8 433 37 423 17 58 53 72 52 84 108 10 52 10 36 9 413 24 403 57 59 51 98 50 96 109 10 21 10 06 10 394 16 384 98 60 49 96 49 06 110 9 92 9 78 11 376 05 367 35 61 48 19 47 33 111 9 64 9 50 12 358 88 350 62 62 46 49 45 67 112 9 36 9 23 13 342 58 334 74 63 44 86 44 07 113 9 10 8 97 14 327 10 319 66 64 43 30 42 54 114 8 84 8 71 15 312 41 305 33 65 41 79 41 06 115 8 59 8 47 16 298 45 291 73 66 40 35 39 65 116 8 35 8 23 17 285 18 278 80 67
50. 3 8 3 9 3 10 3 11 3 12 3 13 3 14 3 15 3 16 3 17 3 18 3 19 3 20 3 21 3 22 3 23 3 24 3 25 3 26 3 27 What Is in This Chapter anneer eneen venne vennen venne eenen ennn 3 37 E Outdoor Unit PC Board Defect nnn ennen eneree ener sersneenvenn 3 39 E3 Outdoor Unit Actuation of High Pressure Switch nnen 3 40 EX Outdoor Unit Actuation of Low Pressure Sensor nanne 3 43 ES Outdoor Unit Inverter Compressor Motor Lock nanne 3 45 EB Outdoor Unit STD Compressor Motor Overcurrent Lock ERX125 250A7W1B nara rita laces 3 48 ET Outdoor Unit Malfunction of Outdoor Unit Fan Motor 3 50 ES Outdoor Unit Malfunction of Moving Part of Electronic Expansion Valve Y1E Y2E for ERX125 250A7W1B Y1E Y3E for ERX100 140A8V3B iii e 3 54 F3 Outdoor Unit Abnormal Discharge Pipe Temperature 3 56 F6 Outdoor Unit Refrigerant Overcharged ERX125 250A7W1B 3 57 F6 Outdoor Unit Refrigerant Overcharged ERX100 140A8V3B 3 59 H7 Outdoor Unit Abnormal Outdoor Fan Motor Signal 3 60 H9 Outdoor Unit Malfunction of Thermistor R1T for Outdoor Aiir 3 62 32 Outdoor Unit Current Sensor Malfunction eee 3 63 J Outdoor Unit Malfunction of Discharge Pipe Thermistor R3T R31 32T for ERX125 250A7W1B R2T for ERX100 140A8V3B 42 ann ners aunens
51. 48 4 79 1 17 166 07 161 36 33 14 18 13 88 2 71 1 16 156 80 152 38 34 13 59 13 31 0 64 1 15 148 10 143 96 35 13 04 12 77 2 57 8 14 139 94 136 05 36 12 51 12 25 4 52 3 13 132 28 128 63 37 12 01 11 76 2 oo 12 125 09 121 66 38 11 52 11 29 10 250 11 118 34 115 12 39 11 06 10 84 42 353 10 111 99 108 96 40 10 63 10 41 14 321 9 106 03 103 18 41 10 21 10 00 16 29 2 8 100 41 97 73 42 9 81 9 61 18 26 6 7 95 14 92 61 43 9 42 9 24 20 24 3 6 90 17 87 79 44 9 06 8 88 22 22 2 5 85 49 83 25 45 8 71 8 54 24 20 3 4 81 08 78 97 46 8 37 8 21 26 18 5 3 76 93 74 94 47 8 05 7 90 28 17 0 2 73 01 71 14 48 7 75 7 60 30 15 6 1 69 32 67 56 49 7 46 7 31 32 14 2 0 65 84 64 17 50 7 18 7 04 spi Ea 7 62 54 60 96 51 6 91 6 78 38 111 2 59 43 57 94 52 6 65 6 53 40 103 3 56 49 55 08 53 6 41 6 53 42 9 5 4 53 71 52 38 54 6 65 6 53 44 88 5 51 09 49 83 55 6 41 6 53 46 8 2 6 48 61 47 42 56 6 18 6 06 48 7 6 7 46 26 45 14 57 5 95 5 84 50 7 0 8 44 05 42 98 58 5 74 5 43 52 6 7 9 41 95 40 94 59 5 14 5 05 54 6 0 10 39 96 39 01 60 4 96 4 87 56 5 5 11 38 08 37 18 61 4 79 4 70 58 5 2 12 36 30 35 45 62 4 62 4 54 60 4 79 13 34 62 33 81 63 4 46 4 38 S oe 14 33 02 32 25 64 4 30 4 23 66 3 87 15 31 50 30 77 65 4 16 4 08 68 361 16 30 06 29 37 66 4 01 3 94 70 3 37 17 28 70 28 05 67 3 88 3 81 72 3 15 18 27 41 26 78 68 3 75 3 68 74 2 94 19 26 18 25 59 69 3 62 3 56 76 2 75 20 25 01 24 45 70 3 50 3 44 78 2 51 21 23 91 23 37 71 3 38 3 32 80 2 41 22 22 85 22 35 72 3 27
52. C temperature of indoor unit Low ambient temperature k Is the indoor temperature not more than 14 C Low suctionair Faulty suction air thermistor of indoor unit L Is the connector properly connected Are the temperature thermistor resistance characteristics normal of the evaporator Abnormal piping length Does the piping length fall in the permissible range High pipe z 7 resistance Bent or crashed pipe k Conduct visual checks for pipe conditions a i i Is there any temperature difference caused before Clogging of foreign particles and after the filter or branch pipe P Stop valve closed k Check to be sure the stop valve is open circulation Inadequate refrigerant quantity of quantity refrigerant N Moisture choke Eliminate moisture by vacuum operation ri Dirty evaporator Is the heat exchanger clogged Degradation Can the fan motor be rotated with in condensing D F Faulty fan motor hands Are the motor coil resistance capacity _ Decrease and insulation normal Decreased fan output Faulty control aulty contro f F If a spare PCB is mounted is the 4 fan airflow PCB Including capacity fi da rate High air capacity setting properly made 4 passage Dirty filter Is the air filter clogged resistance Obstacle Is there any obstacle in the air passage 1 For details of the compressor capacity control while in cooling refer to Compressor PI Control on page 2 17 2 The low p
53. ERX125 250A7W1B nnn eneen eren eneen 3 86 3 29 LE Outdoor Unit Malfunction of Transmission Between Inverter and Control PC Board ERX100 140A8VBB nnee eenen 3 89 3 30 PY Outdoor Unit Inverter Over Ripple Protection ERXA25 250A SWAB isis sia 3 90 3 31 PY Outdoor Unit High Voltage of Capacitor in Main Inverter Circuit ERX100 140A8V3B nnee eenen ennen enneenere edat oiera 3 92 3 32 PH Outdoor Unit Malfunction of Inverter Radiating Fin Temperature RISO Sensor me cet ceeds soot alte ie 3 93 3 33 Pu Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board ERX125 250A7W1B ee 3 95 4 Error Codes System Malfunctions 4 1 What Is in This Chapter nnen ner eenneneneneer ene nnen onver eneen venen 3 97 4 2 UG Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure ERX125 250A7W1B 3 98 4 3 UD Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure ERX100 140A8V3B 3 100 44 UP Reverse Phase Open Phase ERX125 250A7W1B 3 103 45 Ue Outdoor Unit Power Supply Insufficient or Instantaneous Failure ERX125 250A7 WA BY ica 3 104 4 6 Ue Power Supply Insufficient or Instantaneous Failure ERX100 140A8V3B ana ae ti 3 107 4 7 U3 Outdoor Unit Check Operation not Executed 3 109 4 8
54. Gas pipe Liquid pipe flare ERX100A8V3B 15 9 mm flare 9 5 mm ERX125A8V3B ERX140A8V3B 19 1 mm brazing 1 46 Part 1 System Outline ESIE07 08 Switch Box Layout 4 Switch Box Layout 4 1 What Is in This Chapter Introduction This chapter shows the switch box components Outdoor units This chapter contains the following switch box layouts Topic See page 4 2 Switch Box Layout for ERX125 200A7W1B 1 48 4 3 Switch Box Layout for ERX250A7W1B 1 49 4 4 Switch Box Layout for ERX100 140A8V3B 1 50 4 5 Switch Box Layout for EKEXDCB A V3B 1 51 4 6 Switch Box Layout for EKEXFCB A V3B 1 52 Part 1 System Outline 1 47 Switch Box Layout ESIE07 08 4 2 Switch Box Layout for ERX125 200A7W1B The illustration below shows the switch box layout A1P A3P X1M A1P A4P Val NT Na 1 EE C H selector PR EE by da Dn ap X1M EE IO A2P Item Description A1P Printed circuit board main front layer A2P Printed circuit board noise filter rear layer A3P Printed circuit board inverter rear layer A4P Printed circuit board fan rear layer X1M A1P Terminal strip control A1P X1M Terminal strip power supply C H selector Not used 1 48 Part 1 System Outline ESIE07 08 Switch Box Layout 4 3 Switch Box Layout for ERX250A7W1B The illustration below shows t
55. Hz ON ON gt Low pressure uan control Same as the oil return operation mode Maintain number of compressors in oil return preparation operation ON Outdoor unit fan Fan control Normal cooling Fan control Normal cooling Fan control Normal cooling Subcooling motorized valve EV2 SH control 0 pls 0 pls Hot gas bypass valve SVP OFF OFF OFF Accumulator oil return valve SVO ON ON ON sd ES El Ending conditions 20 sec or e Ts Te lt 5 C or e Pe lt 0 6MPa e HTdi gt 110 C Indoor unit actuator Cooling oil return operation Fan Electronic expansion valve Thermostat ON unit Normal opening Stopping unit 224 pls Thermostat OFF unit Normal opening with forced thermostat ON Part 2 Functional Description 2 25 Outdoor Unit Functional Concept ESIE07 08 ERX100 140A8V3B Outdoor unit actuator Oil return preparation operation Oil return operation Post oil return operation Compressor Take the current step as the upper limit 52 Hz Full load gt Low pressure constant control Same as the oil return operation mode Outdoor unit fan Fan control Normal cooling Fan control Normal cooling Fan control Normal cooling Four way valve OFF OFF OFF Main electronic expansion valve EV1 480 pls 480 pls 480 pls Subcooling
56. INV STn INV INV STn INV INV Fullload Unload Fullload Unload Fullload Unload 1 36 0Hz 11 80 0Hz 21 140 0Hz 2 39 0Hz 12 86 0Hz 22 146 0Hz 3 43 0Hz 13 92 0Hz 23 152 0Hz 4 47 0Hz 14 98 0Hz 24 158 0Hz 5 52 0Hz 15 104 0Hz 25 164 0Hz 6 52 0Hz 57 0Hz 16 110 0Hz 26 170 0Hz 7 57 0Hz 64 0Hz 17 116 0Hz 27 175 0Hz 8 62 0Hz 71 0Hz 18 122 0Hz 28 180 0Hz 9 68 0Hz 78 0Hz 19 128 0Hz 29 185 0Hz 10 74 0Hz 20 134 0Hz 30 190 0Hz 31 195 0Hz Note Compressors may operate in a pattern other than those listed in above tables subject to the operating conditions Selection of full load operation to from unload operation is made with the unload circuit solenoid valve Y3S SVUL The full load operation is performed with the SVUL set to OFF while the unload operation is performed with the SVUL set to ON SVUL Solenoid valve U L circuit Part 2 Functional Description Outdoor Unit Functional Concept ESIE07 08 2 3 4 Electronic Expansion Valve PI Control Main electronic expansion valve Fully open during cooling operation EV1 control Subcooling For ERX200 250A7W1B only motorized valve EV2 control Makes PI control of the motorized valve Y2E to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger SH Tsh Te SH Outlet superheated degree of evaporator C Tsh Suction pipe temperature detected with the thermistor R5T C Te Low pre
57. In order to prevent the increase of high pressure when a malfunction occurs this compressor switch is activated at high pressure of 4 0 MPa or more to stop the compressor opera Q S2PH HP pressure switch For STD tion compressor 1 Vv Subcooling heat exchanger Used to subcool liquid refrigerant from the electronic expansion valve cooling WwW Capillary tube Used to return the refrigerating oil separated through the oil separator to the INV com pressor X Capillary tube Used to return the refrigerating oil separated through the oil separator to the STD1 compressor 1 R1T Thermistor Outdoor air Ta Used to detect outdoor temperature correct discharge pipe temperature and others 2 R2T Thermistor Suction pipe Ts Used to detect suction pipe temperature 3 R31T Thermistor INV discharge Used to detect discharge pipe temperature make the temperature protection control of pipe Tdi compressor and others 4 R32T Thermistor STD1 discharge pipe Tds1 5 R4T Thermistor Heat exchanger Used to detect liquid pipe temperature of air heat exchanger and others deicer Tb 6 R5T Thermistor Subcooling heat Used to detect gas pipe temperature on the evaporation side of subcooling heat exchanger gas pipe Tsh exchanger keep the superheated degree at the outlet of subcooling heat exchanger constant and others R6T Thermistor Liquid pipe TI Used to detect liquid pipe temperature R7T Thermistor Accumulator inlet Used to detect
58. Thermistor Heat exc deicer FSU Field fuse R5T Thermistor Heat exc subcool outlet F1U Fuse 8A 250V A4P R6T Thermistor Liq pipe F1U F2U Fuse T 3 15A 250V A1P S1NPH Pressure sensor High F400U Fuse T 6 3A 250V A2P S1NPL Pressure sensor Low H1P H8P Pilot lamp serv monitor orange S1PH Pressure switch High H2P prepare test nn flickering SD1 Safety devices input H2P Malfunction detection light up VIR Power module A4P HAP Pilot lamp VIR V2R Power module A3P Service monitor green X1A X2A Connector M1F K1 Magnetic relay X1M Terminal strip Power supply K2 Magnetic contactor M1C X1M Terminal strip Control A1P K3R Magnetic relay Y1S Y2E Electronic expansion valve Subcool K4R Magnetic relay Y2S Y1S Solenoid valve Hot gas K7R Magnetic relay E1HC Y2S Solenoid valve Oil return LAR Reactor Z1C Z5C Noise filter Ferrite core M1C Motor Compressor Z1F Noise filter With surge absorber M1F Motor Fan Notes 1 This wiring diagram only applies to the outdoor unit 2 EI Field wiring E Indication of parts outside switchbox 3 Terminal strip o Terminal as Connector 1 Protective earth screw 4 Refer to the installation manual for connection of the F1 F2 transmission wiring and how to use BS1 BS5 and DS1 DS2 switch 5 Do not operate the unit by short circuiting protection device S1PH Colors BLK black BLU blue BRN brown GRN green RED r
59. Wiring for EKEXDCB A V3B 5 11 The illustration below shows the wiring diagram of the unit iring Field w YATIOWLNOO ALOWSY Xog 10HLNOO woz xv 3TW27176 2 e o A ws z GHVGNVLS 1 x SINIT HOLSIWYSHL ht woz XY HOLOINNOI JAVA NOISNVAX3 OS xv ws NIN 11 HATIOHLNO9 LINN DNMIONVH HIV LINN ONMIONVH HIV danddns 97314 LINN ONIONVH HIV HALI HALI INWA NOISNVdX3 OINOH LO373 LIM IATVA woor XVA T NM NOISSINSNVHL Ne INN HIMOd ZIJ Lh L we esse ISS SSS SS y A PA asn4 y HOLIMS 1 asn4 RY HOLIMS 1 XOd TOHLNO9 y HOLIMS NIV 1 AlddNS HAMOd Part 1 System Outline 1 72 ESIE07 08 Wiring Diagrams Outdoor Units Notes Symbols NO A FF WwW ND oo All wiring components and materials to be procured on the site must comply with the applicable local and national codes Use copper conductors only For details
60. aa Meehan deta alta trae Rt ATO 3 70 IC rrd nt od bots oak hme nee 3 72 L Le i BREE Roe e a eG A LA Ng et Ae ie ee A Ed 3 74 Ae ann A eek Ace abate Mae A dete es Ade ark an des dalende eee 3 75 LB eked ee Pee A EARN adi ae ee ane Se AA E Ge wie gs aen tote a yee 3 77 LQ fives arth ey eden Bit A de AA GRE Ra eee ahaa Gea eg 3 80 LEQ Selves TEEN 3 83 3 85 BE hahah Sb cee bananenteelt dd E at yond cr E EE ann 3 86 3 89 Locating Functional Diagrams ws vse tek dn eid ee ae oh a on ee 1 37 PGB Layouts gx sii teke Godel cities A Fy heeds pac bee Wen deed he zein 1 77 Switch Box Layout irc da tn dd dt de as eels 1 47 Wiring DIAgraMS nn naer vente AA as A WBA eee 1 53 Malfunction Code Indication by Outdoor Unit PCB ERX100 140A8V3B tired nd en da de 3 21 ERX125 259047WAB a li ad 3 16 Method of Replacing the Inverter s Power Transistors ERX100 140A8V3B 2 10 Method of Replacing the Inverter s Power Transistors and Diode Modules ERX125 250A7W1B 2 7 O Onsite Settings with the Power On ERX125 250A7WABe sn nadal DRE Mins Bh Mee Beiden ld as es 4 29 Operation Mode 5 ta zorg a A AR A das de he 2 14 Operation when Power is Turned On ERX100 140A8V3B oca a Aga end ARE 4 39 ERX125 250A7W1B ai ag 4 32 Outdoor Unit PC Board ERX100 14048V3B coi A A A Abed Beales 1 93 ERX125 250A7W1B 2 zen eere aderen Adalat Gets wer il wd ek 1 92 Outdoor Unit Thermistor RIT eee eee ee eee ee eee 24 Outdoor Unit Thermistors for Dis
61. any abnormalities NO The inverter is likely to have become faulty Connect the compressor cable and due to the malfunction then restart the operation of the compressor Vv After the completion of replacement be sure to check the compresssor YES gt Replace the inverter PCB Part 3 Troubleshooting 3 83 Error Codes Outdoor Units ESIE07 08 Troubleshooting Isa difference between NO high pressure and low pressure gt Faulty pressure prior to startup equalization 0 2MPa Check the refrigerant system YES Does NO Power ON the malfunction L9 gt End of measures recur It can take a maximum of 60 minutes Check the refrigerant to determine the malfunction system YES L gt Check of compressor Check the compressor for abnormal sounds vibration operating conditions and others according to the Compressor Diagnosis Procedure Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 84 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 27 L9 Outdoor Unit Inverter Start up Error ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A r La ERX100 140A8V3B Malfunction is detected from cur
62. attached Part 4 Commissioning and Test Run 4 31 Test Operation ESIE07 08 2 6 Operation when Power is Turned On ERX125 250A7W1B Contents Topic See page 2 6 1 When Turning On Power First Time ERX125 250A7W1B 4 32 2 6 2 When Turning On Power The Second Time and Subsequent 4 32 ERX125 250A7W1B 2 6 3 When an Indoor Unit or Outdoor unit PC Board has been Changed 4 33 ERX125 250A7W1B 2 6 1 When Turning On Power First Time ERX125 250A7W1B General The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc Status Outdoor unit Indoor unit Test lamp H2P Blinks Can also be set during operation described above If T1 T2 is closed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete 2 6 2 When Turning On Power The Second Time and Subsequent ERX125 250A7W1B Tap the RESET button on the outdoor unit PC board Operation becomes possible for about 2 minutes If you do not push the RESET button the unit cannot be run for up to 10 minutes to automatically set master power Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If T1 T2 is closed during operation described above the operation lamp lights b
63. detection Malfunction decision conditions Supposed causes Troubleshooting Notes Caution A H9 Outdoor Unit Malfunction of Thermistor R1T for Outdoor Air uo ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected from the temperature detected by the outdoor air thermistor When the outside air temperature thermistor has short circuit or open circuit Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Connector is NO x1 a ae PC gt Connect the connector and turn on board A1P again Resistance is normal when measured after disconnecting the thermistor R1T from the outdoor unit PC board 3 5kQ to 360kQ NO gt Replace the thermistor R1T gt Replace outdoor unit PC board A1P 1 Connector X29A for ERX125 250A7W1B connector X11A for ERX100 140A8V3B 2 Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 62 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 14 Je Outdoor Unit Current Sensor Malfunction Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A Remark c na ERX125 250A7W1B Malfunction is d
64. for the insulation resistance Power OFF e insulation resistance is low i e not more than Disconnect the cable from the fan and then check the fan motor for the insulation resistance The insulation resistance is low i e not more than 1MW NO A YES Correct the unbalanced loads to eliminate the unbalanced state Unbalanced voltage will cause extremely unbalanced current thus impairing the service life of or resulting in the malfunction of the equipment Replace the compressor Check the inverter power transistor Has the power transistor got faulty NO W Check the fan driver power transistor Has the power transistor got faulty NO YES gt Replace the fan motor Replace the fan driver YES gt Replace the inverter PC board Y Observe the conditions of the PC board In the case of a serious failure a compressor failure may cause the failure of the PC board Even if the PC board is replaced it may cause failure again To avoid that recheck the compressor for ground and for any broken wires Furthermore even after the completion of PC board replacement check the compressor gt Replace the fan driver PC board yx Observe the conditions of the PC board Part 3 Troubleshooting 3 105 Error Codes System Malfu
65. gas or refrigerant system clogging incorrect piping Defect of thermistor R3T Defect of pressure sensor Defect of outdoor unit PC board A1P 3 100 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions Troubleshooting Cooling The suction pipe1 temp minus low pressure YES Low pressure is 0 25 MPa or less The voltage of X18A pins 2 and 3 on main outdoor unit PC board A1P is 1 0 VDC or less Low pressure sensor output voltage 2 Out of gas closing of stop valve or refrigerant system is clogged Requires check of refrigerant system Replace main outdoor unit PC board A1P Replace low pressure sensor saturation temp is 20 C or higher NO Resistance is normal when measured with the thermistor RST for suction NO gt Out of gas or refrigerant system is clogged Requires check of refrigerant system gt Replace the thermistor pipe1 disconnected from the outdoor unit PC Is the low pressure sensor correct Replace the low pressure sensor gt Replace the outdoor unit PC board A1P Note 2 Voltage measurement point Caution 1 occurred Be sure to turn off power switch before connect or disconnect connector or parts damage may be Part 3 Troubleshooting 3 101 Error Codes System Malfunctions ESIE07 08
66. has been Changed 4 40 ERX100 140A8V3B 2 8 1 When Turning On Power First Time ERX100 140A8V3B General The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If T1 T2 is closed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Part 4 Commissioning and Test Run 4 39 Test Operation ESIE07 08 2 8 2 When Turning On Power the Second Time and Subsequent ERX100 140A8V3B General Tap the RESET BS5 button on the outdoor unit PC board Operation becomes possible for about 2 minutes If you do not push the RESET button the unit cannot be run for up to 10 minutes to automatically set master power Status Outdoor unit Indoor unit Test lamp H2P Blinks Can also be set during operation described above If T1 T2 is closed during operation described above the operation lamp lights but the compressor does not operate Returns to normal when automatic setting is complete 2 8 3 When an Indoor Unit or Outdoor Unit PC Board has been Changed ERX100 140A8V3B General Be sure to push and hold the RESET button for 5 seconds If not the addition cannot be recognized I
67. moisture turns to be vapor and comes out from the units Normal operation Part 3 Troubleshooting 3 5 Troubleshooting ESIE07 08 Symptom Supposed Cause Countermeasure 11 The system lt Indoor unit gt These are operating sounds of Normal operation produces Immediately after turning ON the PE comia expansion valvet This sound becomes low after a sounds the indoor unit the power supply indoor unit lapse of approximately one produces ringing sounds minute lt Indoor and outdoor units gt These sounds are produced from Normal operation Hissing sounds are gas refrigerant flowing respectively through the indoor continuously produced while a E and outdoor units in cooling or defrosting operation lt Indoor and outdoor units gt These sounds are produced Normal operation Hissing sounds are pute the ops refrigerant stops produced immediately after SEEN TOM the startup or stop of the system or the startup or stop of defrosting operation lt Indoor unit gt These sounds are produced from Normal operation 6 the drain discharge device in Faint sounds are continuously An operation produced while in cooling operation or after stopping the operation lt Indoor unit gt These sounds are produced from Normal operation Creaking sounds are nk a ee produced while in heating A ao S changes op
68. new refrigerants HCFC units Refrigerant name R407C R410A R22 Composing Non azeotropic mixture Quasi azeotropic mix Single component refrig substances of HFC32 HFC125 and ture of HFC32 and erant HFC134a 1 JFC125 1 Design pressure 3 2 Mpa gauge pres 4 15 Mpa gauge pressure 2 75Mpa gauge pressure sure 32 6 kgf cm 42 3 kgf cm 28 0 kgf cm Refrigerant oil Synthetic oil Ether Mineral oil Suniso Ozone destruction 0 0 0 05 factor ODP Combustibility None None None Toxicity None None None 1 Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 2 points 3 product Reference 1 Mpa 10 19716 kgf cm 20 10 P MPa HFC iik E TL AS Ws TS Palit Af VI TAVIS cou AA CASA paners D AAV ATE AS AA AS eae PS SS Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling The design pressure is different at each product Please refer to the installation manual for each 50 50 E a 100 150 200 250 30 0 350 h kdtkg PA A Pressure Enthalpy curves of HFC 32 125 50 50wt vii Introduction ESIE07 08 Thermodynamic characteristic of R410A DAIREP ver2 0 Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy 0 kPa kg m pressure kJ kgK
69. no requirements 0 23 j0 15 Minimum circuit amps MCA A 11 9 18 5 21 6 Maximum fuse amps MFA A 16 25 Total overcurrent amps TOCA A 15 6 16 5 31 5 Full load amps FLA A 0 4 0 7 0 9 Vv 400 10 For power supply Quantity 5 Remark Earth wire include For connection with Quantity 2 Indoor Remark F1 F2 Both indoor and outdoor unit Notes MCA MFA MCA 1 25 x maximum RLA other RLA EA FLA MFA is smaller than or equal to 2 25 x maximum RLA other RLA EA FLA next lower standard fuse rating minimum 16A MFA is used to select the circuit breaker and the ground fault circuit interrupter earth leakage circuit breaker MSC means the maximum current during start up of the compressor Maximum allowable voltage range variation between phases is 2 RLA is based on following conditions indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB Select wire size based on the value of MCA or TOCA TOCA means the total value of each OC set Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminal is not below or above listed range limits FLA means the full load amps of the fan motor 1 30 Part 1 System Outline ESIE07 08 Specifications 2 3 Technical specifications Specifications for DAIKIN Inverter Condensing Unit ERX100 140A8V3B The table below contains the technical specifications
70. no stress on the wire View without item 31 n E J O T 2 o E DAIRIN Sticking reference D ie See note 2 El E is ql iE Ll j j pos Sticking reference j E PT min sief 31 32 1 6 j TT ili i e el e el Note 1 i o 4 Yr pe El 2 H o en AS J Position of pipes 2 a En Notes 1 Align and do not stick item 31 amp 32 together 2 Lock nut fastening torque 6 9 16 7 Nm Part 1 System Outline ESIE07 08 General Outline Outdoor Units Components The table below contains the different components of the unit No Component 21 Cover 22 Baseplate 23 Daikin logo 24 Electrical box assy 25 Pipe assy 26 Hexagon head tapping screw 27 Tie wrap with clip 28 Support 30 Name plate entry table 31 Lower sealing 32 Upper sealing Notes 1 Align and do not stick item 31 amp 32 together 2 Lock nut fastening torque 6 9 16 7 Nm Part 1 System Outline 1 9 General Outline Outdoor Units ESIE07 08 1 6 ERX125A7W1B Functional Parts Layout Plan Accumulator assy Heat exchanger ass l TU A a Solenoid valve Y2S a accumulator oil ret
71. occurred 3 68 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 19 US Outdoor Unit Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor RST ERX200 250A7W1B R6T ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Notes Caution A E uo ERX200 250A7W1B ERX100 140A8V3B Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor When the subcooling heat exchanger gas pipe thermistor is short circuited or open Faulty subcooling heat exchanger gas pipe thermistor R5T R6T Faulty outdoor unit PC board Is the connector for liquid pipe thermistor connected to y NO X30A X13A 1 on outdoor unit PC board A1P gt Connect connector and operate unit again YES Is the resistance measured after removing the thermistor R5T R6T from outdoor unit PC board normal xkQ to ykQ 2 NO gt Replace thermistor R5T R6T gt Replace outdoor unit PC board A1P Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 1 Connector X30A for ERX125 250A7W1B connector X13A for ERX100 140A8V3B 2 1 8k0 800k02 for ERX125 250A7W1B 3 5k0 360k02 for ERX100 140A8V3B Be sure to turn off power switch before connect or disconn
72. of The Remote Controller s Inspection Test Operation B HON siii ae air 1 6 Remote Controller Service Mode nnn oneven vennen oneven 1 7 Overview of Error Codes ERX125 250A7W1B sessen 1 8 Overview of Error Codes ERX100 140A8V3B sesse 1 9 Malfunction Code Indication by Outdoor Unit PCB ERX125 25047W4B icon a andante 1 10 Malfunction Code Indication by Outdoor Unit PCB ERX100 140A8V3B atrose e aes taciones radar 2 13 Table of Contents ESIE07 08 2 Error Codes Indoor Unit Expansion Valve Kit 2 1 What Is in This Chapter anneer eneen venne vennen venne neneenenenn 3 25 2 2 AQ Indoor Unit Error of External Protection Device nnen 3 26 2 3 AP Indoor Unit PC Board Defect nnen neen eneen enen 3 27 2 4 AS Indoor Unit Malfunction of Moving Part of Electronic Expansion Valve Y 1E ip iiio it 3 28 2 5 Au Indoor Unit Malfunction of Capacity Determination Device 3 30 2 6 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 3 31 2 7 CS Indoor unit Malfunction of Thermistor R3T for Gas Pipes 3 32 2 8 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 3 33 2 9 CA Indoor Unit Malfunction of Thermistor for Discharge Alir 3 34 2 10 Cu Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 3 35 3 Error Codes Outdoor Units 3 1 3 2 3 3 3 4 3 5 3 6 3 7
73. of the pressure sensor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 44 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 5 ES Outdoor Unit Inverter Compressor Motor Lock Error code ES Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes ERX125 250A7W1B ERX100 140A8V3B Inverter PC board takes the position signal from UVW line connected between the inverter and compressor and the malfunction is detected when any abnormality is observed in the phase current waveform This malfunction will be output when the inverter compressor motor does not start up even in forced startup mode Inverter compressor lock High differential pressure 0 5MPa or more Incorrect UVW wiring Faulty inverter PC board Stop valve is left in closed Part 3 Troubleshooting 3 45 Error Codes Outdoor Units ESIE07 08 Troubleshooting Power OFF Is the stop NO gt On site causes valve open YES Check the compressor cable for disconnection and flaws The Open the stop valve compressor cable has a YES defect connections made to NO gt Replace the cable and then securely connect the connectors gt Make wire connections phases U V and W in the proper order and mann
74. of vessels Since R410A is high pressure gas it is contained in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or roll them on the ground Storage Although R410A is not flammable it must be stored in a well ventilated cool and dark place in the same way as any other high pressure gases It should also be noted that high pressure vessels are equipped with safety devices that releases gas when the ambient temperature reaches more than a certain level fusible plug melts and when the pressure exceeds a certain level spring type safety valve operates Introduction ESIE07 08 1 3 3 Service Tools R410A is used under higher working pressure compared to previous refrigerants R22 R407C Furthermore the refrigerating machine oil has been changed from Suniso oil to Ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems Therefore gauge manifolds and charge hoses that are used with a previous refrigerant R22 R407C can not be used for products that use new refrigerants Be sure to use dedicated tools and devices Tool compatibility Compatibility Tool HFC HCFC Reasons for change R410A R407C R22 Gauge manifold Do not use the same tools for R22 Charge hose s and R410A Thr
75. outdoor unit PC board A1P The NO Replace suction pipe gt yes gt Replace low pressure sensor temperature minus coil gt Out of gas or refrigerant temperature is 20 C system is clogged Requires or higher f check of refrigerant system NO Resistance is normal when measured with the suction pipe thermistor R2T and coil NO gt Replace the thermistor thermistor R4T disconnected from the outdoor unit PC MES gt Replace the outdoor unit PC board A1P Notes 1 Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on page 2 6 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred Part 3 Troubleshooting 3 99 Error Codes System Malfunctions ESIE07 08 4 3 UO Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes cz ERX100 140A8V3B Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation temperature Microcomputer judge and detect if the system is short of refrigerant Malfunction is not decided while the unit operation is continued Out of
76. refrigerant charged up to the specified amount If insufficient charge the refrigerant from the service port of stop valve on the liquid side with outdoor unit in stop mode after turning power on O Has the amount of refrigerant charge been recorded on Record Chart of Additional Refrigerant Charge Amount V3180 2 7 2 Turn Power On ERX100 140A8V3B Turn outdoor unit power on V Turn indoor unit power on v Carry out field setting on outdoor PC board O Be sure to turn the power on 6 hours before starting operation to protect compressors O Close outside panels of the outdoor unit V3056 Part 4 Commissioning and Test Run Test Operation ESIE07 08 2 7 3 Check Operation ERX100 140A8V3B Overview During check operation mount front panel to avoid the misjudging Check operation is mandatory for normal unit operation When the check operation is not executed alarm code U3 will be displayed Press and hold the TEST EN OPERATION button BS4 on O The test operation is started automatically l outdoor unit PC board for 5 The following judgements are conducted within 15 minutes about 30 seconds minutes at the maximum e Check for wrong wiring e Check stop valve for not open e Pipe length automatic judgement The following indications are conducted while in test operation LED lamp on outdoor unit PC board H2P
77. sensor failure SP PAM failure Failure of IGBT or drive circuit Troubleshooting Turn OFF the power supply once and then turn it ON again Does it return YES normally gt It is believed that external factors noise etc other than failure caused the malfunction gt Replace the outdoor PC board A1P PC board equipped with a resin case Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 74 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 23 Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting ERX125 250A7W1B Caution A LH Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise LH ERX125 250A7W1B ERX100 140A8V3B Fin temperature is detected by the thermistor of the radiation fin When the temperature of the inverter radiation fin increases above 93 C ERX125 250A7W1B 83 C ERX100 140A8V3B Actuation of fin thermal Actuates above 93 C 83 C Defect of inverter PC board Defect of fin thermistor Fin temperature of the compressor inverter is high NO Power OFF YES If the fin reaches a temperature of 93 C the malfunction will occur Remove and insert the fin thermistor connector X111A
78. temperatures from 23 C to 27 C C gt E Body thermostat sensor is used for temperatures from 27 C to 30 C E gt F And assuming suction temperature has changed from 30 C to 18 C F gt A Body thermostat sensor is used for temperatures from 30 C to 25 C F gt D Remote controller thermostat sensor is used for temperatures from 25 C to 21 C D gt B Body thermostat sensor is used for temperatures from 21 C to 18 C B gt A Part 2 Functional Description 2 43 Outdoor Unit Functional Concept ESIE07 08 2 13 Electronic Expansion Valve Control In cooling to maximize the capacity of indoor unit heat exchanger evaporator operate the electronic expansion valve under PI control so that the evaporator outlet superheated degree SH will become constant Cooling SH TH2 TH SH Evaporator outlet superheated degree TH Temperature C detected with the liquid thermistor TH Temperature C detected with the gas thermistor SC Condenser outlet subcooled degree TC High pressure equivalent saturated temperature Furthermore the default value of the optimal evaporator outlet superheated degree condenser outlet subcooled degree is 5 deg However this default value varies with the operating performance 2 44 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 14 Low Outdoor Air Temperature Protection Control Objective In cooling or fan operatio
79. the coil resistance and insulation normal Faulty control PCB Is the pressure value checked with the Service lt Checker corresponding to the measurement of the pressure sensor In cooling See 1 Faulty compressor Faulty low capacity 1 pressure control control Faulty low pressure In both cooling protection and heating control See 2 In cooling o L lf the dear unit a inigpor electronic pei expansion valve valve is throttled too much See 3 Faulty valve coil i Are the coil resistance and insulation normal Faulty valve body Faulty gas pipe thermistor of indoor unit Check for the thermistor resistance and connection Faulty Faulty control electronic Yl Faulty liquid pipe P Check for the thermistor resistance and expansion thermistorof indoor unit connection valve Is the pressure value checked with the Service control Faulty control PCB k Checker corresponding to the measurement of a the pressure sensor In cooling Low suction O air Short circuit i Is the suction air temperature not less than 14
80. the compressor is detected Compressor overload Compressor coil disconnected Defect of inverter PC board Faulty compressor ERX125 250A7W1B Inverter secondary current Power ON A current of not YES 16 1 A less than 15A flows through the gt Overcurrent compressor Check the compressor and refrigerant system in the E NO same manner as that for E3 Is the sto NO gt Open the stop valve YES wire connections NO properly made according to the gt Rectify the wire connections Wiring Diagram Check the compressor cable for any disconnection or flaws Disconnect the cable from the compressor and then check the compressor for the insulation resistance Power OFF The YES insulation resistance is low Tie not morethan gt Replace the compressor 100kQ Check the power transistor on the inverter PC board using a multiple tester YES power transistor have any gt Replace the inverter PCB abnormalities The inverter is likely to have become faulty due to the malfunction of the Connect the compressor cable and compressor then restart the operation After the completion of replacement be sure to check the compresssor 3 80 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting ERX125 250A7W1B Is a difference NO between high pressure and gt Faulty pressure low pre
81. the power to the outdoor unit and all connected indoor units Be sure to turn the power on at least 6 hours before operation in order to have power run ning to the crank case heater STEP 3 Check the LED display on the outdoor unit PC board A1P is as shown in the table below and transmission is normal LED display Blink 3 ON OFF SERV C H SELECTOR LED display MONITOR MODE TEST HWL L N O P DEMA ND MULTI Default status of IND MASTER SLAVE shipped HAP H1P H2P H3P H4P H5P H6P H7P H8P Single system 3 e O x e e e O STEP 4 Make the onsite settings as needed using the push button BS1 BS5 on the outdoor unit PC board A1P with the power on See 1 2 5 2 Onsite Settings With the Power On STEP 5 Perform the check operation following the Check Operation Method of the Service Precautions label on the EL COMPO BOX lid The system operation for about 40 minutes and automatically stops the check operation If the malfunction code is not displayed in the remote controller after the system stop check operation is completed Normal operation will be possible after 5 minutes If the malfunction code is displayed in the remote controller correct the malfunction following Remote control ler displays malfunction code and perform the check operation again Part 4 Commissioning and Test Run 4 27 Test Operation ESIE07 08 Electric shock warning
82. turns OFF while in oil return operation pump down residual operation is performed on completion of the oil return operation 2 14 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 3 Basic Control Content Topic See page 2 3 1 List of Functions in Manual Operation 2 16 2 3 2 Compressor Pl Control 2 17 2 3 3 Compressor Step Control 2 18 2 3 4 Electronic Expansion Valve Pl Control 2 20 2 3 5 Outdoor Unit Fan Control in Cooling Operation 2 21 2 3 6 Step Control of Outdoor Unit Fans 2 22 Part 2 Functional Description 2 15 Outdoor Unit Functional Concept ESIE07 08 2 3 1 List of Functions in Manual Operation ERX125 250A7W1B Function of Functional Part Part Name Symbol Electric Symbol Normal Cooling Compressor M1C M2C PI control High pressure protection Low pres sure protection Td protection INV protection Outdoor unit fan M1F Cooling fan control Subcool heat exchanger electronic EV2 Y2E PI control expansion valve Hot gas bypass valve SVP Y1S OFF Accumulator oil return valve SVO Y2S ON Indoor unit actuator Normal cooling Fan Thermostat ON unit Stopping unit Thermostat OFF unit Electronic Thermostat ON unit Normal opening 1 expansion Stopping unit 0 pls valve Thermostat OFF unit 0 pls 1 PI control Evaporator outlet superheated de
83. wiring is correctly attached to terminals X2M F1 F2 TO IN D UNIT on the outdoor unit circuit board Part 4 Commissioning and Test Run 4 37 Test Operation ESIE07 08 2 7 4 Confirmation on Normal Operation ERX100 140A8V3B Conduct normal unit operation after the check operation has been completed When outdoor air temperature is 24 CDB or higher the unit can not be operated with heating mode See the installation manual attached Confirm that the indoor outdoor units can be operated normally When an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat up it sufficiently then start operation again Operate indoor unit one by one to check that the corresponding outdoor unit operates Confirm that the indoor unit discharges cold air or warm air Operate the air direction control button and flow rate control button to check the function of the devices 4 38 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 8 Operation when Power is Turned On ERX100 140A8V3B Contents Follow the following procedure to conduct the initial test operation after installation Topic See page 2 8 1 When Turning On Power First Time ERX100 140A8V3B 4 39 2 8 2 When Turning On Power the Second Time and Subsequent 4 40 ERX100 140A8V3B 2 8 3 When an Indoor Unit or Outdoor Unit PC Board
84. with the power on There is a serious risk of electric shock if any live part is touched 4 28 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 4 Onsite Settings with the Power On ERX125 250A7W1B General Use the push button switches BS1 through BS5 on the outdoor unit PC board A1P to make the necessary onsite settings See the Service Precautions label on the EL CONPO BOX lid for details on the positions and operating method of the push button switches and on the onsite setting Make sure to record the setting on the accessory REQUEST FOR THE INDICATION label Warning Electric Shock Warning Use an insulated rod to operate the push buttons via the inspection door of EL COMPO BOX lid There is a risk of electric shock if you touch any live parts since this operation must be performed with the power on Part 4 Commissioning and Test Run 4 29 Test Operation ESIE07 08 2 5 Test Run ERX125 250A7W1B Contents Topic See page 2 5 1 Before Test Run ERX125 250A7W1B 4 30 2 5 2 Test Run ERX125 250A7W1B 4 30 2 5 3 Checks after Test Run ERX125 250A7W1B 4 31 2 5 1 Before Test Run ERX125 250A7W1B Make sure the following works are completed in accordance with the installation manual Piping work Wiring work Air tight test Vacuum drying Additional refrigerant charge Check that all work for the indoor unit are finished and
85. 0A7W1B Using dip switches on the PC board Setting at replacement by spare PC board Using dip switches on the PC board enables field setting shown below However make no changes of factory settings shaded Setting item Description No Setting DS1 1 ON Not used Do not change the factory settings OFF Factory set DS1 2 ON Not used Do not change the factory settings DS1 4 OFF Factory set DS2 1 ON Not used Do not change the factory settings 4 OFF Factory set Caution DIP switch Setting after changing the main P C Board A1P to spare parts P C B After the replacement by the spare PC board be sure to make settings shown below When you change the main P C Board A1P to spare parts P C B please carry out the following setting Initial conditions of dip switches ann oen 1234 1234 DS1 DS2 DIP Switch Detail DS No Item Contents DS1 1 Cool Heat ON change over OFF Factory setting setting of spare PC board DS1 2 Power supply ON specification OFF Factory 400V class 380V setting of spare PC board DS1 3 Cooling ON Cooling only setting en OFF Factory Heat pump setting setting setting of spare PC board DS1 4 Unit allocation ON Make the following settings according to setting allocation of unit All models are set to OFF at factory DS2 1 OFF Factory Europe setting of spare DS1 4 ON PC board DS2 1 OFF
86. 1 Stand alone installation Close the bottom of the installation frame to prevent the discharged air from being bypassed The relations between H A and L are as L lt H follows L A 0 lt L lt 1 2H 100 L lt H 1 2 lt L lt H 200 H lt L Set the stand as L lt H 2 Series installation 2 or more Close the bottom of the installation frame to prevent the discharged air from being bypassed L g ee lt The relations between H A and L are as The relations between H A and L are as follows follows L A L A 0O lt L lt 1 2H 250 0 lt L lt 1 2H 250 L lt H 1 2H lt L lt H 300 1 2 lt L lt H 300 H lt L Set the stand as L lt H 1 25 Part 1 System Outline ESIE07 08 General Outline Outdoor Units Obstacle on the discharge side Close the gap A the gap between the upper and lower outdoor units to prevent the discharged air from being bypassed Do not stack more than two unit uolsuewip uononujsuoo Buidid ureip uolsuewip uoRonujsuoo Buidid uresp 1 1 11 4 Double decker Installation 1 11 5 Multiple Rows of Series Installation on the Rooftop etc 2 Rows of series installation 2 or more The relations between H A and L are as follows 250 300 O lt L lt 1 2H 1 2 lt L lt H cannot be instal
87. 149 3 49 3 45 50 72 32 70 96 100 13 35 13 15 150 3 41 3 37 Part 2 Functional Description 2 5 ESIE07 08 General Functionality Pressure Sensor 1 3 Graph VDC VDC Detected Pressure High Side MPa Detected Pressure Low Side MPa Output Voltage High Side Output Voltage Low Side Ph PL VH Low pressure MPa VL High pressure MPa Ph Vi V Voltage V Ph 1 38V 0 69 PL 0 57V 0 28 Detected Pressure Ph PL I a 2 5 YN Y a lt gt I Voc Output Voltage Vu VL Part 2 Functional Description ESIE07 08 General Functionality 1 4 Method of Checking The Inverter s Power Transistors and Diode Modules Only ERX125 250A7W1B Checking failuresin Check the power semiconductors mounted on the inverter PC board by the use of a multiple power tester semiconductors mounted on inverter PC board Multiple tester Items to be prepared 1 Prepare the analog type of multiple tester 2 For the digital type of multiple tester those with diode check function are available for the checking Test points Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance Preparation To make measurement disconnect all connectors and terminals Inverter PC board XAA XALA YPCT31513 1A a Part 2 Functional Description 2 7 General Fun
88. 2s Solenoid valve Oil return K11R Magnetic relay Y4S Y4S Solenoid valve Injection LAR Reactor Z1C Z5C Noise filter Ferrite core M1C Motor Compressor Z1F Noise filter With surge absorber M1F Motor Fan Notes ggg Field wiring Terminal strip eo Connector Pea This wiring diagram only applies to the outdoor unit Indication of parts outside switchbox o Terminal Protective earth screw 4 Refer to the installation manual for connection of the F1 F2 transmission wiring and how to use BS1 BS5 and DS1 DS2 switch 5 Do not operate the unit by short circuiting protection device S1PH Colors BLK black BLU blue BRN brown GRN green RED red WHT white YLW yellow ORG orange PNK pink GRY grey Part 1 System Outline 1 55 ESIE07 08 Wiring Diagrams Outdoor Units E oO s 4 O E D amp ke od m ps s gt S 2 o N N z E 3 Li E 2 2 3 E 3 amp m a O c WwW Wiring diagram 5 3 UN OLN JO NOLUISOd TEHS amp LNO A A Lo LHM YOLOANNOO TWW NIE YOLONNO9 TTVN bd ZA bd JINN HOOONI WIX OLN 30 71130 LW
89. 38 96 38 29 117 8 12 8 01 18 272 58 266 51 68 37 63 36 98 118 7 89 7 78 19 260 60 254 72 69 36 34 35 72 119 7 68 7 57 20 249 00 243 61 70 35 11 34 51 120 7 47 7 36 21 238 36 233 14 71 33 92 33 35 121 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61 29 12 125 6 51 6 42 26 191 53 187 44 76 28 64 28 16 126 6 33 6 25 27 183 46 179 57 77 27 69 27 24 127 6 16 6 08 28 175 77 172 06 78 26 79 26 35 128 6 00 5 92 29 168 44 164 90 79 25 91 25 49 129 5 84 5 76 30 161 45 158 08 80 25 07 24 66 130 5 69 5 61 31 154 79 151 57 81 24 26 23 87 131 5 54 5 46 32 148 43 145 37 82 23 48 23 10 132 5 39 5 32 33 142 37 139 44 83 22 73 22 36 133 5 25 5 18 34 136 59 133 79 84 22 01 21 65 134 5 12 5 05 35 131 06 128 39 85 21 31 20 97 135 4 98 4 92 36 125 79 123 24 86 20 63 20 31 136 4 86 4 79 37 120 76 118 32 87 19 98 19 67 137 4 73 4 67 38 115 95 113 62 88 19 36 19 05 138 4 61 4 55 39 111 35 109 13 89 18 75 18 46 139 4 49 4 44 40 106 96 104 84 90 18 17 17 89 140 4 38 4 32 41 102 76 100 73 91 17 61 17 34 141 4 27 4 22 42 98 75 96 81 92 17 07 16 80 142 4 16 4 11 43 94 92 93 06 93 16 54 16 29 143 4 06 4 01 44 91 25 89 47 94 16 04 15 79 144 3 96 3 91 45 87 74 86 04 95 15 55 15 31 145 3 86 3 81 46 84 38 82 75 96 15 08 14 85 146 3 76 3 72 47 81 16 79 61 97 14 62 14 40 147 3 67 3 62 48 78 09 76 60 98 14 18 13 97 148 3 58 3 54 49 75 14 73 71 99 13 76 13 55
90. 5 Error Codes Outdoor Units ESIE07 08 3 16 u5 Outdoor Unit Malfunction of Thermistor or Suction Pipe R2T for ERX125 250A7W1B R3T RST for ERX100 140A8V3B Error code uo Applicable models ERX125 250A7W1B ERX100 140A8V3B Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor malfunction 1 2 ERX100 140A8V3B detection Malfunction When a short circuit or an open circuit in the suction pipe temperature thermistor is detected decision conditions Supposed causes Defect of thermistor R3T RST R2T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Connector of the thermistor for suction pipet 2 is connected to X30A X12A 1 for outdoor unit PC board A1P NO gt Connect the connector and turn on again Resistance is normal when measured after disconnecting the thermistor R3T R5T R2T from the outdoor unit PC board xkQ ykQ 2 NO gt Replace the thermistor R2T gt Replace outdoor unit PC board A1P Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Note 1 Connector X30A for ERX125 250A7W1B connector X12A for ERX100 140A8V3B 2 1 8k0 800k02 for ERX125 250A7W1B 3 5kQ 360kQ for ERX100 140A8V3B Caution Be sure to turn off power switch before connect or disconnect
91. 5 mm Oblong holes dl i 5 AO I RAIL ETT Poo 3 ad 8 5 pre ee j al f i LL a HL o OO q S NES i j ee Ei 2 90 ol 3 ted st E EEN E LH y 129 160 67 SCAD La 367 OS 444 635 Installation and service space See page 1 17 1 4 Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 3 ERX200 250A7W1B Outlook Dimensions and Components Outlook and The illustration below shows the outlook and the dimensions of the unit mm dimensions 792 4 15x22 5 mm Oblong holes E Pitch of foundation bolt holes al Foundation bolt holes 722 737 Pitch of foundation bolt holes 1 PeS eee ten re 4 J l l 5 l LT I m SSO men L Jim A a th a 5 e S l WL D 64 64 7 gt cb CEEE ij 100 177 e 163 as 234 p 67 67 Lo 765 Installation and See page 1 17 service space Part 1 System Outline 1 5 General Outline Outdoor Units ESIE07 08 1 4 ERX100 140A8V3B Outlook Dimensions and Components Outlook and The illustration below shows the
92. 6 Step 7 Step 8 Step 9 Unit stopping Y Pressure equalizing Y Cooling start control Y Stability waiting operation Y Judgment function y Refrigerant over charge judgment A Pump down residual operation Y Standby fo r restarting A Completion Press the TEST button for 5 seconds 10 sec to 10 minutes 20 sec to 2 minutes 10 minutes e Stop valve close check e Wrong wiring check e Piping length check 3 minutes 15 minutes 5 seconds 2 minutes LED display H1P H7P O ON OFF BLINK 0000000 0300000 03000090 0000000 ee ee TERRE 00900000 900000 0000000 000000 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 Test Operation 2 1 What Is in This Chapter Introduction This chapter contains the following information Installation process Procedures and outline Operation Overview This chapter contains the following topics Topic See page 2 2 Installation Process ERX125 250A7W1B 4 16 2 3 Procedure and Outline ERX125 250A7W1B 4 17 2 4 Onsite Settings with the Power On ERX125 250A7W1B 4 29 2 5 Test Run ERX125 250A7W1B 4 30 2 6 Operation when Power is Turned On ERX125 250A7W1B 4 32 2 7 Procedure and Outline ERX100 140A8V3B 4 34 2 8 Operation when Power is Turned On ERX100 140A8V3B 4 39
93. 7 08 2 11 Emergency Operation General Ifthe compressor cannot operate this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit Caution In order to disable the compressor operation due to a failure or else be sure to do so in emergency operation mode NEVER attempt to disconnect power supply wires from magnetic contactors or else Doing so will operate compressors in combination that disables oil equalization between the compressors thus resulting in malfunctions of other normal compressors 2 11 1 Restrictions for Emergency Operation In the case of system with 1 outdoor unit installed only when thermostats of indoor units having a capacity of 50 or more of the outdoor unit capacity turn ON the emergency operation is functional If the total capacity of indoor units with thermostat ON is small the outdoor unit cannot operate If the emergency operation is set while the outdoor unit is in operation the outdoor unit stops once after pump down residual operation a maximum of 5 minutes elapsed 2 11 2 In the Case of 1 outdoor unit System ERX200 250A7W1B Procedure Set the system to operation prohibition mode by compressor oOo a AO ND In order to set an INV compressor to operation prohibition mode set No 42 of Setting mode 2 to LED display O ON OFF 9 Blink EMERGENCY OPERATION a At Pre
94. 8 Noise filter PCB The illustration below shows the PCB connectors EARTH LA NA GREEN RED BLUE LB NB RED BLUE Connectors The table below describes the PCB connectors Connector Connected to Description NA LA Power supply 1N 50Hz 230V LB NB A1P LC NC Main PCB GRN Earth 1N 50Hz 230 V 1 86 Part 1 System Outline ESIE07 08 PCB Layout Service PCB Connectors The illustration below shows the PCB connectors Ti AA 9 5 H1P H2P H3P H4P DE dN The table below describes the PCB connectors Connector Connected to Description X205A X5A Main PCB Part 1 System Outline 1 87 PCB Layout ESIE07 08 6 4 PCB Layout for EKEXDCB A V3B EKEXFCB A V3B and EKEXMCBV3B Control PCB The illustration below shows the PCB connectors UR NS X3A X4A X6A a era 5 gt 5 4 pn an Vio ye vak 7 ITA PHO ji je Po Sey tt 3 a T Bel see SN ah ii i de E M a is be xian i ik IES 3 R ET Ard a sale pen EXA EN X30A X23A X17A X24A 1 88 Part 1 System Outline ESIE07 08 PCB Layout Connectors The table below describes the PCB connectors for EKEXDCBV3 Connector Connected to Description X1A TIR Transformer 220V 21 8V X3A TIR Transformer 220V 21 8V X4A Not Applicable
95. A XDGA X1A 1 78 Part 1 System Outline ESIE07 08 PCB Layout Connectors The table below describes the PCB connectors Connector Connected to Description X1A X1M Terminal strip power supply X2A S1PH High pressure sensor switch for INV compressor X3A bridge X4A bridge X7A Y1S Solenoid valve hot gas X8A Y2S Solenoid valve oil return X11A E1HC Crankcase heater X18A R1T Air thermistor X20A X4A A3P Electronic exp valve X23A Y2E HPS signal X29A XGA A3P M1C discharge thermistor X30A R2T Suction thermistor R4T Heat exch driver thermistor R5T Heat exch outlet thermistor R6T Liquid pipe thermistor X31A S1NPL Pressure sensor low X32A S1NPH Pressure sensor high Extra connectors The table below describes the extra PCB connectors for ERX250A7W1B ee hea B Connector Connected to Description X3A S2PH Pressure switch high X5A K2M Magnetic contactor M2C X12A E2HC Crankcase heater X26A X1A A6P Current sensor X29A R32T M2C discharge thermistor Part 1 System Outline 1 79 PCB Layout ESIE07 08 Noise filter PCB The illustration below shows the PCB connectors A2P White Red he le X402A mn s is X403A X401A X400A Connectors The table below describes the PCB connectors Connector Connected to Description X400A X1M Power supply terminal strip X401
96. A X10A Power supply X402A X61A 15V output X403A X1A Inverter control power input 1 80 Part 1 System Outline ESIE07 08 PCB Layout Inverter PCB A3P The illustration below shows the PCB connectors X6A X41A X5A X61A X9A X111A X4A Connectors P2 P3 N3 X11A The table below describes the PCB connectors Connector Connected to Description X1A X403A A2P Inverter control power input X4A X20A A1P ACS communication X5A X5A A4P Fan power X6A X28A A1P HPS signal X9A Not used X10A X401A A2P Power supply X11A UVW Compressor X41A X3A A4P ACS communication X61A X402A A2P 15V output X111A R1T Fin thermistor P1 L1R white Reactor P2 L1R white Reactor P3 ZAC ASP red Fan driver N3 ZAC A3P black Fan driver Part 1 System Outline 1 81 PCB Layout ESIE07 08 Fan PCB A4P The illustration below shows the PCB connectors amp AD np i E i i X1A black white red X2A Connectors The table below describes the PCB connectors Connector Connected to Description X1A X1A Fan motor X2A X2A Fan motor X3A X41A A3P ACS communication X4A bridge X5A X5A ASP Fan power X7A Not used X51A Not used P1 P3 A3P Fan driver N1 N3 A3P Fan driver 1 82 Part 1 System Outline ESIE07 08 PCB Layout Curren
97. A7W1B nennen eneen ennneneeen en 1 54 5 3 Wiring Diagram for ERX200A7W1B neee venne ner ennen ennn 1 56 5 4 Wiring Diagram for ERX250A7W1B nennen ennneneeenen 1 58 5 5 Wiring Diagram for ERX100 140A8V3B ane eneen 1 60 5 6 Wiring Diagram for EKEXFCB A V3B nennen eener enn 1 62 5 7 Wiring Diagram for EKEXDCB A V3B and EKEXMCBV3B 1 64 5 8 Field Wiring for ERX125 250A7W1B annen eenen ennen 1 66 5 9 Field Wiring for ERX100 140A8V3B nnn neee ennen 1 68 5 10 Field Wiring for EKEXFCB A V3B nennen ennenne vennen 1 70 5 11 Field Wiring for EKEXDCB A V3B eneen ennen eennen 1 72 5 12 Field Wiring for EKEXMCBV3B eneen ennen eennen 1 74 6 PCB Layout 6 1 What Is in This Chapter ccccceccceceeeeeeeeeeeeeseeeeeeseesenaeeeeseennaeeeees 1 77 6 2 PCB Layout for ERX125 250A7W1B nanne ennen enne reneneneenn 1 78 6 3 PCB Layout for ERX100 140A8V3B neen nennen 1 84 6 4 PCB Layout for EKEXDCB A V3B EKEXFCB A V3B and EKEXMCBV3B cuota San een eee 1 88 6 5 Outdoor Unit PC Board for ERX125 250A7W1B annen 1 92 6 6 Outdoor Unit PC Board for ERX100 140A8V3B nen 1 93 ii Table of Contents ESIE07 08 Part 2 Functional Description 1 General Functionality 1 1 What Is in This Chapter oooococccccnococcccccccnoncnccncnnnnnnncnncnannn nc nnnnnnnnnn cnn 1 2 Thermistor Resistance Temperature CharacteristicS 1 3 Pressure Sensor cocina ia anio drie ddie dd 1 4 M
98. Air tight test and After finished piping work carry out air tight test and vacuum drying vacuum drying method lt Air tight test gt Pressurize the liquid and gas pipes to 4 0MPa 40bar do not pressurize more than 4 0MPa 40bar If the pressure does not drop within 24 hours the system passes the test If there is a pressure drop check for leaks make repairs and perform the airtight test again lt Vacuum drying gt Evacuate the system from the liquid and gas pipes by using a vacuum pump for more than 2 hours and bring the system to 100 7kPa or less After keeping the system under that condition for more than 1 hour check if the vacuum gauge rises or not If it rises the system may either contain moisture inside or have leaks Note If moisture might enter the piping follow belows l e if doing work during the rainy season if the actual work takes long enough that condensation may form on the inside of the pipes if rain might enter the pipes during work etc 1 After performing the vacuum drying for two hours pressurize to 0 05 MPa i e vacuum breakdown with nitrogen gas then depressurize down to 100 7 kPa for an hour using the vacuum pump vacuum drying 2 Ifthe pressure does not reach 100 7 kPa even after depressurizing for at least two hours repeat the vacuum breakdown vacuum drying process After vacuum drying maintain the vacuum for an hour and make sure the pressure does not rise by monitorin
99. DAIKIN Service Manual ERX100 140A8V3B ERX125 250A7W1B EKEXFCB V3 EKEXDCB V3 EKEXMCBV3 EKEXV40 250 Daikin Inverter Condensing Unit ESIE07 08 ESIE07 08 Table of Contents 1 Introduction 1 1 About This Manual AN i i 1 2 Safety Cautions ida e i ii 1 3 Precautions on Handling New Refrigerant R410A i vii 1 4 Combination Overview Outdoor Units of the ERX series i xvii 1 5 Physical Limitations and Limits of Operation nnen nen eneen i xix 1 6 External Appearance Outdoor Units nennen en enenenn i xxi Part 1 System Outline 1 General Outline Outdoor Units 1 1 What Is in This Chapter nnen neren ner ennen erenneeneneeeenene venen 1 3 12 ERX125A7W1B Outlook Dimensions and Components 14 1 3 ERX200 250A7W1B Outlook Dimensions and Components 15 1 4 ERX100 140A8V3B Outlook Dimensions and Components 1 6 1 5 ERKEXV50 250 Functional Parts Layout eneen 1 8 1 6 ERX125A7W1B Functional Parts Layout eee ennen 1 10 1 7 ERX200A7W1B Functional Parts Layout eenen 1 12 1 8 ERX250A7W1B Functional Parts Layout eenn 1 14 1 9 ERX100 140A8V3B Functional Parts Layout anne 1 16 1 10 ERX125 250A7W1B Installation and Service Space cee 1 17 1 11 ERX100 140A8V3B Installation and Service Space ce eeeeeeee 1 21 2 Specifications 2 1 What Is in This Chapter nnen neren nenenvenerenee
100. Drawn Flaring tool Flare gauge Se aon ES 1 0 TASCO JAPAN 00 1 LE xi Introduction ESIE07 08 Specifications Dimension A Nominal size Tube O D AR Do Class 2 R410A Class 1 Conventional 1 4 6 35 9 1 9 0 3 8 9 52 13 2 13 0 1 2 12 70 16 6 16 2 5 8 15 88 19 7 19 4 3 4 19 05 24 0 23 3 Differences Change of dimension A Dimension A For class 1 R407C For class 2 R410A Conventional flaring tools can be used when the work process is changed change of work process Previously a pipe extension margin of 0 to 0 5mm was provided for flaring For R410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5 mm For clutch type only Conventional tool with pipe extension margin adjustment can be used xii ESIE07 08 Introduction Torque wrench Specifications Dimension B Unit mm Nominal size Class 1 Class 2 Previous 1 2 24 26 24 5 8 27 29 27 No change in tightening torque No change in pipes of other sizes Differences Change of dimension B Only 1 2 5 8 are extended For class 1 R407C For class 2 R410A Dimension B Vacuum pump with check valve Vacuum pump adaptor Reverse flow preventive vacuum adaptor lt a 1141 S Specifications Discharge speed e Maximum degree of vacuum 50 l min 50Hz 100 7 kpa 5 torr 755 mmHg 60 l min 60Hz Suction
101. E Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 10 ERX125 250A7W1B Installation and Service Space Overview Topic See page 1 10 1 Single Unit Installation 1 17 1 10 2 Installation in Rows 1 18 1 10 3 Centralized Group Layout 1 19 1 10 1 Single Unit Installation Pattern 1 300 or more H SZ H A AAA lt Front gt AO or more 10or morg 500 or more Pattern 2 100 or more NZ s 50 or mort lt Front gt or more 500 or more 4 wall height unrestricted 7 ras ZZ lt Front gt a Pattern 3 200 or more Part 1 System Outline 1 17 General Outline Outdoor Units ESIE07 08 1 10 2 Installation in Rows Pattern 1 V LIS ES ET atl sith BV LIV LES LIO INT LGS LEL AED ET AN TED AT SU LEY LES MO ae ott ET MA ST 10 or more lt Front gt 20 or more 0 or more 500 or more QA 77277277777 Pattern 2 100 or more lt Front gt a 100 or more 500 or more Pattern 3 Wall height unrestricted 300 or more 400 or more 400 or more 200 or more 1 18 Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 10 3 Centralized Group Layout Pattern 1 lt Front gt 20 or more 10 or more
102. E React its aie detested nash Shaan ils comune EN NAS en Miata Bia chia Se eaten Saas 3 110 UI ie A A sea ae a ah nd At cn Sas nna le baila se Atel a aa 3 112 OES deeper dependant de eed en ended ee andre 3 114 A O oy a 3 115 Fe tice tects es A 3 117 Wiring Diagram EKEXDOB AIV I Birao tia ON cht a 8 ore kta doth cat dooce tie Batt ete Maleate dad ARA 1 64 EKEXEGB A MSB 54 tone deinen dt eae li ta deletes Add di dk elated 1 62 EKEXMGBV SB oir a e dd atari dal eae ag 1 64 ERX100 140A8V3B ia cece hia ets laa tt 1 60 ERXI2ZSA7TWABS sci acre dee E aa dnd sank in gang dh 1 54 ERX200A7WAB se re is bip iia da reli adi miedo oe high aioe dale te 1 56 ERX250AZWAB Falter tect od dde take dan td e dd do ala deb ds calla 1 58 Index ESIE07 08 v Index
103. IE07 08 2 4 1 Startup Control General This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor this reducing startup loads Furthermore the inverter is turned ON to charge the capacitor In addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined Startup Control for ERX125 250A7W1B Thermostat ON Pressure equalization Startup control control prior to startup STEP1 STEP2 52 Hz 124 Hz OFF OFF Compressor 0 Hz OFF OFF 2 steps 20 sec until Pc Pe gt 0 39MPa is achieved A Ta lt 20 C OFF 1 step 15 sec when Pc gt 2 16MPa Outdoor unit fan STEP4 Ta gt 20 C STEP4 1 step 15 sec when Pc lt 1 77MPa Subcooling motorized valve EV2 ERX200 250 only PIS 0 pls O pls Hot gas bypass valve SVP OFF OFF OFF Accumulator oil return valve SVO OFF OFF OFF Injection SVT ERX125 OFF OFF OFF only Ending conditions A lapse of one minute A lapse of 10 sec OR L eo eee Startup Control for ERX100 140A8V3B r Thermostat ON Pressure equalization control Startup control prior to startup STEP1 STEP2 57 Hz Unload Compressor 0 Hz 57 Hz Unload 2 steps 20 sec until Pc Pe gt 0 39MPa is achieved Ta lt 20 C OFF 1 step 15 sec when Pc gt 2 16M
104. IP switch setting Caution after changing the main PCB DIP switch Setting after changing the main P C Board A1P to spare parts P C B When you change the main P C Board A1P to s setting pare parts P C B please carry out the following Please Attach the Capacity Setting Adapter corresponding to Capacity Class ex 112 140 160 in connector X51A See Below Capacity Setting Adapter Capacity Class Note 1 100 112 CAPACITY SETTING ADAPTER for 100 3112 2 125 140 CAPACITY SETTING ADAPTER for 125 3140 3 140 160 CAPACITY SETTING ADAPTER for 140 3160 Position of Attaching the Capacity Setting Adapter X51A Position of Attaching the Capacity Setting Adapter J SET x si HL pe OY Ei ELKE f AENA Y y al J Lee 1 eee ae e E T SA 252V Part 4 Commissioning and Test Run ESIE07 08 Field settings 1 5 Setting of Refrigerant Recovery Mode General When carrying out the refrigerant collection on site fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit s operation are prohibited Operation 1 In setting mode 2 with units in stop mode set Refrigerant Recovery Vacuuming
105. J9 Outdoor Unit Malfunction of Subcooling Heat Exchanger Gas Pipe Ther 3 69 mistor RST ERX200 250A7W1B R6T ERX100 140A8V3B 3 20 JA Outdoor Unit Malfunction of High Pressure Sensor 3 70 3 21 JC Outdoor Unit Malfunction of Low Pressure Sensor 3 72 Part 3 Troubleshooting 3 37 Error Codes Outdoor Units ESIE07 08 Topic See page 3 22 L1 Outdoor Unit Malfunction of PC Board ERX100 140A8V3B 3 74 3 23 L4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise 3 75 3 24 L5 Outdoor Unit Inverter Compressor Abnormal 3 77 3 25 L8 Outdoor Unit Inverter Current Abnormal 3 80 3 26 L9 Outdoor Unit Inverter Start up Error ERX125 250A7W1B 3 83 3 27 L9 Outdoor Unit Inverter Start up Error ERX100 140A8V3B 3 85 3 28 LC Outdoor Unit Malfunction of Transmission Between Inverter and Control 3 86 PC Board ERX125 250A7W1B 3 29 LC Outdoor Unit Malfunction of Transmission Between Inverter and Control 3 89 PC Board ERX100 140A8V3B 3 30 P1 Outdoor Unit Inverter Over Ripple Protection ERX125 250A7W1B 3 90 3 31 P1 Outdoor Unit High Voltage of Capacitor in Main Inverter Circuit 3 92 ERX100 140A8V3B 3 32 P4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise 3 93 Sensor 3 33 PJ Outdoor Unit Faulty Field Setting after Replacing Main
106. N o A AB wel Be 3 33 CA A A AA RE ges a Ae A atd 3 34 Check Operation ERX100 140A8V3B ciao e Bb eee le 4 36 Check Operation Detail ERX100 140A8V3B iio A A A 4 14 ERX125 250A7W1B 41 aim aa Geach ieee bal Mace ee eee a 4 13 Check Work Prior to Turn Power Supply On ERX100 140A8V3B tr on shy eat rai dE Pee ale ele Ae at a 4 35 ERX125 250A7W1B noreste wdn ee Bede Hera a ene eerd se 4 18 Checks Check No 1 Connector Fan Motor 0 0 0 0 ee eee 3 120 Oe AN 3 121 Check No 3 Causes Rise High Pressure oenen eneen 3 122 Check No 4 Causes Drop Low Pressure oen eneen 3 123 Check No 5 Fan Motor Connector ERX100 140A8V3B oon 3 124 Checks after Test Run ERX125 250A7WAB ot a td a 4 31 ii A ANA A A el AD Nae EA Ee 3 35 Combination Overview lt i ci a daa da i xvii Components EunctionalDiagraMsS sten beige Nee A as Aes ee ee be sates 1 37 PGB PayOubec ff 0d cist bed dear do bd oe 1 77 Switch BOX a ase sede es dave dds ante oa 1 47 Wiring Diagrams rsr Set a A A a Maths 1 53 Confirmation on Normal Operation ERX100 140A8V3B wee zanden daden dee ate Atao AA oe heeds ages 4 38 Index i ESIE07 08 Control BASIC E AO SAS A A EAS A A eee 2 15 Discharge Pipe Protection oenen eee 2 34 Electronic Expansion Valve oenen eee 2 44 Emergency OOO nl eee eek eed A Ad ed 2 40 High Pressure Protection ir orai a area ars ai a botas Maced aah vld 2 30 Injection ERX125A7WAB i206 circa gent baeten buteo adas
107. O 3ph 12hp RXQ12D7W1B n n n n n n n n 14 hp RXQ14D7W1B n n n n n n n n 16 hp RXQ16D7W1B n n n n n n n n 18 hp RXQ18D7W1B n n n n n n n n Introduction ESIE07 08 Notes In the tables in this section P stands for pair combination Combination depending on AHU coil volume details see Installation manual and Capacity table n stands for Quantity determined by connection ration or maximum number of indoor units In combination with VRV outdoor the EKEXV kit is considered as one of the indoor units Options ERX A7W1 ERX A8V3 Option name 125 200 250 100 125 140 Central drain plug KKPJ5180 Central drain pan kit KWC26B160 KWC26B280 xviii ESIE07 08 Introduction 1 5 Physical Limitations and Limits of Operation Distance between The illustrations and table below show the limitations components system A EXV kit A B fe Daikin C D condensing unit E EKEXCB gt AHU DDC Allowable heigth AHU lt 5m Total system lt 30 m EXV kit outdoor unit can be above or below the AHU outdoor Piping Communication A B c D E F ERX125 250A7W1B length length depend 5 lt A lt 50m 25m lt 100 m lt 20 m lt 20 m on DDC ERX100 140A8V3B xix Introduction ESIE07 08 Distance betwe
108. PC Board or 3 95 Faulty Combination of PC Board ERX125 250A7W1B 3 38 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 2 EY Outdoor Unit PC Board Defect Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A E ERX125 250A7W1B ERX100 140A8V3B Check data from E7PROM When data could not be correctly received from the E PROM EPROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Defect of outdoor unit PC board A1P Turn off the power once and turn on again Return to normal gt External factor other than malfunction for example noise etc NO Replace the outdoor unit main PC Board A1P Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 39 Error Codes Outdoor Units ESIE07 08 3 3 E3 Outdoor Unit Actuation of High Pressure Switch Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes m i ERX125 250A7W1B ERX100 140A8V3B Abnormality is detected when the contact of the high pressure protection switch opens Error is generated when the HPS activation count reaches the number specif
109. Pa Outdoor unit fan SER Ta gt 20 C STEP4 1 step 15 sec when Pc lt 1 77MPa Four way valve 20S1 Holds OFF OFF Main electronic expansion valve EV1 0 pls 480 pls 480 pls Subcooling electronic expansion valve EV3 O pls 0 pls 0 pls Hot gas bypass valve OFF OFF OFF SVP Ending conditions OR Pc Pe lt 0 3MPa e A lapse of 1 to 5 min A lapse of 10 sec OR A lapse of 130 sec e Pc Pe gt 0 39MPa 2 24 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 4 2 Oil Return Operation General In order to prevent the compressor from running out of oil the oil return operation is conducted to recover oil flown out from the compressor to the system side Start conditions Referring to the set conditions for the following items start the oil return operation in cooling Cumulative oil feed rate Timer setting Make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned ON and then every eight hours Furthermore the cumulative oil feed rate is computed from Tc Te and compressor loads ERX125 250A7W1B Outdoor unit actuator Oil return preparation operation Oil return operation Post oil return operation Compressor Take the current step as the upper limit ERX125 52 Hz Low pressure constant control Other models 52
110. R1 R2 Thermistor Liquid Service monitor green X1M R3 R4 Thermistor Gas Q1DI Earth leakage breaker X1M R5 R6 Thermistor Air R1T Thermistor Air X1M Y1 Y6 Expansion valve R2T Thermistor Liquid X2M P1 P2 Communication remote controller R3T Thermistor Gas X2M T1 T2 Input ON OFF TIR Transformer 220V 21 8V X2M F1 F2 Communication outdoor Notes 1 Use copper conductors only 2 BLK black BLU blue BRN brown GRN green RED red WHT white YLW yellow ORG orange GRY grey PINK pink N neutral L live oo Connector 2282 2 2 2 Separate component man Connector Optional Accesory 5 Wire lamp ggg Field wiring Protective earth screw Part 1 System Outline 1 63 Wiring Diagrams Outdoor Units ESIE07 08 5 7 Wiring Diagram for EKEXDCB A V3B and EKEXMCBV3B Wiring diagram The illustration below shows the wiring diagram of the unit SEE KRP4 OPTIONAL CONNECTION Wi W2 W3 W4 5 XI2A XHA X18A mu outdoor WIRED REMOTE CONTROLLER XIM
111. Setting mode 1 Part 3 Troubleshooting 3 21 dZH d9H ESIE07 08 dSH dvH deH 3 Blink 3 ON e OFF dZH diH dZH d9H dSH dvH deH dZH diH dZH d9H dSH dvH deH dZH diH dZH d9H dSH dvH deH dZH Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction diH apo uogounsen Troubleshooting 1 Display 2 of malfunction in detail cc O Master ee SES e e ele je xk ojo x 0e ESE e je o 3 O 3 Slave E 0 Slave2 XH XK System eg 1 Part 3 Troubleshooting Display 1 of malfunction in detail o o e y ojo ee o o o e y ojo ee o e o o x 3 e o o o o o o o ojo ee o ee oe y ee ee ee e y ee ee o ee e y ee ee ee e y ele ee ojo o 6 ele ee o ee o 6 ele ee ojo o 6 ele ee ojo o ojo o o ojo o 6 ele ee o ee oe y ojo o 6 o ee ele ee ele ee o ojo o ojo ee o digit ojolo XxX e jo ojo e Ae ee o x 3 e SESE 3 SEE S Keje t Keje e je 3 o je ojo ok xk e ele x xk ojo ok xk ojo o x xk e ee x o je 3 ke ele y w me
112. T from the indoor unit PC board 3 5kQ 360kQ NO gt Replace the thermistor R2T gt Replace the indoor unit PC board Refer to thermistor resistance temperature characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 31 Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 2 7 CS Indoor unit Malfunction of Thermistor R3T for Gas Pipes Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A All indoor unit models Malfunction detection is carried out by temperature detected by gas pipe thermistor When the gas pipe thermistor becomes disconnected or shorted while the unit is running Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Connector is connected to X11A of the indoor unit PC board NO gt Connect the thermistor and turn on again Resistance is normal when easured after disconnecting the thermistor R3T from the indoor unit PC board 0 6kQ 360kQ NO gt Replace the thermistor R3T gt Replace the indoor unit PC board Refer to thermistor resistance temperature characteristics table on page 2 4 Be sure to turn off power switch before
113. U4 Malfunction of Transmission between Indoor Units 3 110 4 9 US Indoor Unit Malfunction of Transmission between Remote Controller and Indoor UNit oocoocccnnicccnnnncccncnccnnonaccnnnornn nono nnrrncnnnrna rn 3 112 4 10 UB Indoor Unit Malfunction of Transmission between Master and Sub Remote Controllers onee enneveneenerennenenennenenseeen ennen 3 114 4 11 UA Excessive Number of Control BOXES nnen neen eneen eneen 3 115 4 12 UH Malfunction of System Refrigerant System Address Undefined 3 117 5 Additional Checks for Troubleshooting 5 1 What Is in This Chapter nnn vennen een nenensee er iieii 3 119 5 2 Check No 1 Check on Connector of Fan Motor Power Supply Cable nnn arena nanain a aai 3 120 5 3 Check NoZone ende denna Eden 3 121 5 4 Check No 3 Check for Causes of Rise in High Pressure 3 122 5 5 Check No 4 Check for Causes of Drop in Low Pressure 3 123 5 6 Check No 5 Check for Fan Motor Connector Only ERX100 140A8V3B nennen en neneneneennenenenenenenen 3 124 Table of Contents v ESIE07 08 Part 4 Commissioning and Test Run 1 2 Field settings 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 Test Operation 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 What IS in This Chapter ainia ir keneden era 4 3 Field Setting from Remote Controller 4 4 Auto Restart after Power Failure Reset nanne eenen 4 5 Field Set
114. When the amount of refrigerant which is calculated by using the outside air temperature heat decision conditions exchanging deicer temperature and liquid pipe temperature during a check run exceeds the standard Supposed causes Refrigerant overcharge Misalignment of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor Troubleshooting Check the mounting condition of the temperature sensors of the outside air thermistor heat exchanging deicer thermistor and liquid pipe thermistor in the piping Are the above thermistor installed on pipes correctly NO gt Install thermistor correctly Remove the outside air thermistor heat exchanging deicer thermister and the liquid pipe thermistor from the outdoor PCB and measure resistance with a tester Is the characteristic of the above thermistor normal NO gt Replace thermistor gt Refrigerant overcharged Note Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Part 3 Troubleshooting 3 57 Error Codes Outdoor Units ESIE07 08 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 58 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 11 Error code Applicable models Method of ma
115. a proper quantity of refrigerant refilled The following two methods are available for refilling of the refrigerant 1 Use the automatic refrigerant refilling function 2 Calculate a refrigerant refilling quantity O Check to be sure the stop valves are under the following conditions Liquid side stop valve Gas side stop valve Open Open Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 3 2 Turn Power On ERX125 250A7W1B O Be sure to turn the power on 6 hours before starting operation to Tam outagor unitand protect compressors to power on clankcase heater indoor unit power on O Check to be sure the transmission is normal Check ine mee display of the The transmission is normal if the LEDs display conditions as shown outdoor unit PC board in table below y LED display 3 Blink 3 ON OFF Micro COOL HEAT select LED display Default status computer MODE TEST Low Demand Multi before delivery operation Noise monitor IND MASTER SLAVE HAP H1P H2P H3P H4P HSP H6P H7P H8P One outdoor unit installed E e e 3 e e e o The master unit is the outdoor unit to which the transmission wiring for the indoor units is connected The other outdoor units are slave units a O Make field settings if needed Make field settings with outdoor unit PC For the setting procedure refer to information in Fi
116. ace available always bearing in mind the need to leave enough space for a person to pass between units and wall and for the air to circulate freely If more units are to be installed than are catered for in the above patterns your layout should take account of the possibility of short circuits 4 The units should be installed to leave sufficient space at the front for the on site refrigerant piping work to be carried out comfortably 1 20 Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 11 ERX100 140A8V3B Installation and Service Space Overview Topic See page 1 11 1 Obstacle on Suction Side 1 22 1 11 2 Obstacle on Discharge Side 1 23 1 11 3 Obstacles on Both Suction and Discharge Sides 1 23 1 11 4 Double decker Installation 1 26 1 11 5 Multiple Rows of Series Installation on the Rooftop etc 1 26 Part 1 System Outline 1 21 General Outline Outdoor Units ESIE07 08 1 11 1 Obstacle on Suction Side No obstacle above Obstacle above too 1 Stand alone installation Obstacle on the suction side only Obstacle on both sides Obstacle on the suction side too more 2 Series installation 2 or more Obstacle on both sides Obstacle on the suction side and both sides 1 22 Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 11 2 Obstacle on Disc
117. al 4 Refer to the manual on how to use BS1 BS5 and DS1 DS2 swith 5 Do not operate the unit by short circuiting protection device S1PH 6 Colors BLU blue BRN brown GRN green RED red WHT white YLW yellow ORG orange 7 Refer to the installation manual for connection wiring to control bow Part 1 System Outline 1 61 Wiring Diagrams Outdoor Units ESIE07 08 5 6 Wiring Diagram for EKEXFCB A V3B Wiring diagram The illustration below shows the wiring diagram of the unit 1N 50Hz 230V J ONLY FOR 0 10V INPUT X12A XNA outdoor WIRED REMOTE CONTROLLER POSITION IN SWITCH BOX 2TW28086 1 1 62 Part 1 System Outline ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board X1M Terminal block F1U Fuse 250V F5A A1P X3M Terminal block F3U Field fuse Y1E Electronic expansion valve HAP Light emitting diode X1M
118. alfunction occurs replace the remote controller PC board gt Set one remote controller to MAIN the power supply off once and then back on Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 114 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 11 UR Excessive Number of Control Boxes cz Error code 0 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Excess of connected control boxes Defect of outdoor unit PC board A1P Mismatching of the refrigerant type of indoor and outdoor unit Setting of outdoor PC board was not conducted after replacing to spare parts P C board Troubleshooting Is the outdoor P C board replaced to spare parts PC board YES gt The refrigerant classification has not been set yet total of indoor units displaying UA and indoor units connected to the same refrigerant system is within connectable number of units No gt There are too many indoor units within the same refrigerant system YES Push and hold the RESET button on the outdoor unit PC board for 5 seconds Does a NO malfunction occur gt Normal YES Does i N aah ina 9 gt Matches the refrigerant type of indoor and outdoor unit mat
119. and X28A X22A of outdoor unit gt After connecting turn the power off PC board A1P and then back on again YES Normal when coil check 2 of the NO moving part of the electronic gt Replace the moving part of the expansion valve is electronic expansion valve checked YES The connecting cable is short circuited or disconnected Replace the connecting cable gt Replace outdoor unit PC board A1P Note X28A and X26A only for ERX125A7W1B X21A and X22A for ERX100 140A8V3B 2 Make measurement of resistance between the connector pins and then make sure the resistance falls in the range of 40 to 500 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Graph Orange 1 O Red 2 O Measuring points Yellow 3 O In 1 6 2 6 Black 4 O J 3 6 5 O 4 6 Gray 6 O El Part 3 Troubleshooting 3 55 Error Codes Outdoor Units ESIE07 08 3 9 F3 Outdoor Unit Abnormal Discharge Pipe Temperature Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Notes Caution A an Lul ERX125 250A7W1B ERX100 140A8V3B Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor When the discharge pipe temp
120. as pipes Both liquid and gas pipes Maximum total length m 50 50 50 Inverter controlled Inverter controlled Inverter controlled 24 to 100 24 to 100 24 to 100 HPS HPS HPS Fan motor thermal protection Inverter overload protector PC board fuse Fan motor thermal protection Inverter overload protector PC board fuse Fan motor thermal protection Inverter overload protector PC board fuse Item Installation manual Installation manual Installation manual Quantity 1 1 1 Item Operation manual Operation manual Operation manual Quantity 1 1 1 Item Connection pipes Quantity 3 Notes 1 Nominal cooling capacities are based on indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB equivalent regrigerant piping 7 5m level difference Om 100 evaporator load Sound power level is an absolute value that a sound source generates Sound pressure level is a relative value depending on the distance and acoustic environment For more details please refer to sound level drawings Sound values are measure in a semi anechoic room 1 32 Part 1 System Outline ESIE07 08 Specifications Electrical specifications The table below contains the electrical specifications ERX100A8V3B ERX125A8V3B ERX140A8V3B Power supply Name V3 Phase 1 Frequency Hz 50 Voltage Vv 230 Current N
121. ation When system is in This mode is used to define actuator operations when the system stops stop mode Normal operation stop Actuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 3P EV3 1P 0 pls Hot gas bypass valve SVP OFF Accumulator oil return valve SVO 3P only OFF Injection SVT ERX125A7W1B only OFF Ending conditions Indoor unit thermostat is turned ON Stop due to In order to protect compressors if any of the following items has an abnormal value the system will malfunction make stop with thermostat OFF and the malfunction will be determined according to the number of retry times Item Judgment Criteria ee 1 Abnormal low pressure level 0 07MPa E4 Abnormal high pressure level 4 0MPa E3 Abnormal discharge pipe 135 C F3 temperature level Abnormal power supply voltage Reverse phase power supply U1 Abnormal inverter current level 16 1A 260 sec 3P 24 9A 260sec 1P L8 Abnormal radiator fin 93 C 3P 83 C 1P L4 temperature level Part 2 Functional Description 2 29 Outdoor Unit Functional Concept ESIE07 08 2 5 High Pressure Protection Control General This high pressure protection control is used to prevent the acti
122. ation and operating status of the compressor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be l occurred 3 82 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 26 L9 Outdoor Unit Inverter Start up Error ERX125 250A7W1B Error code LS Applicable models ERX125 250A7W1B Method of This malfunction code will be output if overcurrent occurs at the time of startup malfunction detection Malfunction When the startup control is failed decision conditions When an overcurrent is passed to the inverter due to the malfunction of a compressor or electrical system Supposed causes Defect of compressor Failure to open the stop valve Pressure differential start Faulty compressor connection Defect of inverter PC board Troubleshooting NO Is the stop valve open gt Open the stop valve wire connections properly made according to the Wiring Diagram NO gt Rectify the wire Check the compressor cable for any connections disconnection or flaws Disconnect the cable from the compressor and then check the compressor for the insulation resistance Power OFF insulation resistance is YES low i e not more than gt Replace the compressor NO Check the power transistor on the inverter PC board using a multiple tester NO Does the power transistor have
123. ch indoor and outdoor unit Replace outdoor unit PC board A1P The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit Part 3 Troubleshooting 3 115 Error Codes System Malfunctions ESIE07 08 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred 3 116 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 12 UH Malfunction of System Refrigerant System Address Undefined Error code Applicable Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting c a All indoor unit models Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor Defect of indoor unit PC board Defect of outdoor unit PC board A1P Does a malfunction occur even after 12 electricity being introduced for the first time after installation or after an minutes elapses from the Normal indoor or outdoor unit PC time when electricity is board has been introduced to indoor replaced and outdoor units Is indoor outdoor and outdoor NO o 7 outdoor unit transmission gt After fixing incorrect wiring push and hold the RESET button on the master outdoor unit PC board for 5 seconds Th
124. charge Pipe nnee eee 2 5 Index ESIE07 08 Outlook Dimensions and Components ERX100 140A8 VIB ra TA A A A 1 6 ERX125A7W1B 255 intreders bad 14 ERX200 250A7WAB ennn den es are tn dae a reac si a 1 5 P a NE NN RN 3 90 3 92 PA A A A A eae A A TAR ae ae add 3 93 PCB Layout EKEXDCB A V8B traia boda tb seda 1 88 EKEXEGB A V3B 0 dd 1 88 EKEXMEBVSB arras er ets li dd apie ae eds ea Wte 1 88 ERX100 140A8 VIBE IN Satie bats A ete da E 1 84 ERX125 259047WAB zn ra a Eee Seng aten Weena de 1 78 Physical Limitations and limits of Operation eenen iexix EEEN 3 95 Precautions on Handling New Refrigerant R410A ane i vii Pross r SENSO in nein A ccs a Ad A A hack ore le 2 6 Procedure and Outline ERX100 140A8V3B 5205 ze bet Arnar ba db id dea e 4 34 ERX125 250A7WIBs oiri a a AS AA A A aen 4 17 R Refrigerant Circuit ERX100 140A8V3B idee tend oen annen nd en aante he Ae en oh ye 1 44 ERX125A7WiAB ariel e RA ts taa 1 38 ERX200A7W Binnema a re sas RR EAA panes 1 40 ERX250A7W1B ada 1 42 Refrigerant CylinderS ii sar cade a aa ar oet a A Pie on A ore ee ale i ix Refrigerant R410A sen sian ede Oe to Se see ey la NN wie a Aa ee She gd i vii S Safety Cautions enn ascites A aes ale A A ARE eden aa i ii Self diagnosis by Wired Remote Controller eee eee 3 9 SSMMICETOO SE sAnne rare een Nea Ne MOREA EA NGS ix Setting of Refrigerant Recovery Mode neee eeen 4 11 Setting of Vacuuming Mode oane eeen 4 12 Special Control Oil Re
125. code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A All indoor unit models Malfunction detection is carried out by temperature detected by discharge air temperature thermistor When the discharge air temperature thermistor becomes disconnected or shorted while the unit is running Defect of indoor unit thermistor for air outlet Defect of indoor unit PC board Connector is connected to the indoor NO unit PC board Resistance is normal when measured after disconnecting _ NO the thermistor from the indoor unit PC board 7 2kQ 112kQ gt Connect the thermistor and turn on gt Replace the thermistor R1T gt Replace the indoor unit PC board Refer to thermistor resistance temperature characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 34 Part 3 Troubleshooting ESIE07 08 Error Codes Indoor Unit Expansion Valve Kit 2 10 tU Indoor Unit Malfunction of Thermostat Sensor in Remote Controller Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A All indoor unit models Malfunction detection is carried out by temperature detected b
126. connect or disconnect connector or parts damage may be occurred 3 32 Part 3 Troubleshooting ESIE07 08 Error Codes Indoor Unit Expansion Valve Kit 2 8 29 Indoor Unit Malfunction of Thermistor R1T for Suction Air Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A ra La All indoor unit models Malfunction detection is carried out by temperature detected by suction air temperature thermistor When the suction air temperature thermistor becomes disconnected or shorted while the unit is running Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Connector is connected to X13A of NO gt Connect the thermistor and turn on the Wea PC again Resistance is normal when measured after disconnecting the thermistor R1T from the indoor unit PC board 7 2kQ 112kQ NO gt Replace the thermistor R1T gt Replace the indoor unit PC board Refer to thermistor resistance temperature characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 33 Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 2 9 CA Indoor Unit Malfunction of Thermistor for Discharge Air Error
127. connector or parts damage may be occurred 3 66 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 17 J6 Outdoor Unit Malfunction of Thermistor R4T for Outdoor Unit Heat Exchanger Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected from the temperature detected by the heat exchanger thermistor When a short circuit or an open circuit in the heat exchange thermistor is detected Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Defect of thermistor connection Connector is connected to X30A X12A 1 of outdoor unit PC board A1P No gt Connect the connector and turn on again Resistance is normal when measured after disconnecting the thermistor R4T from the indoor unit PC board xkQ ykQ 2 YES Replace the thermistor R4T gt Replace indoor unit PC board A1P Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 1 Connector X30A for ERX125 250A7W1B connector X12A for ERX100 140A8V3B 2 1 8k0 800k02 for ERX125 250A7W1B 3 5kQ 360kQ for ERX100 140A8V3B Be sure to turn off power switch before connect or disconnect connector or parts damage may be occu
128. connector or parts damage may be occurred Part 3 Troubleshooting 3 93 Error Codes Outdoor Units ESIE07 08 Graph X111A EH connector white el r Es ik Sell hit Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 3 94 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 33 Pu Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board ERX125 250A7W1B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A ERX125 250A7W1B The faulty or no field setting after replacing main PC board or faulty PC board combination is detected through communications with the inverter Whether or not the field setting or the type of the PC board is correct through the communication date is judged Faulty or no field setting after replacing main PC board Mismatching of type of PC board Has the PC board been replaced NO replacing the PC NO board were field setting gt Correct the field settings properly made YES Is the type of PC no gt Replace with a correct PC Qx board correct board YES gt Reset and then restart Type of PC board mismatching includes Main PC board Inverter PC board for comp
129. cool liquid refrigerant from the electronic expansion valve cooling Ww Capillary tube Used to return the refrigerating oil separated through the oil separator to the INV com pressor 1 R1T Thermistor Outdoor air Ta Used to detect outdoor temperature correct discharge pipe temperature and others 2 R2T Thermistor Suction pipe Ts Used to detect suction pipe temperature 3 R3T Thermistor INV discharge Used to detect discharge pipe temperature make the temperature protection control of pipe Tdi compressor and others 4 R4T Thermistor Heat exchanger Used to detect liquid pipe temperature of air heat exchanger and others deicer Tb 5 R5T Thermistor Subcooling heat Used to detect gas pipe temperature on the evaporation side of subcooling heat exchanger gas pipe Tsh exchanger keep the superheated degree at the outlet of subcooling heat exchanger constant and others 6 R6T Thermistor Receiver outlet Used to detect receiver outlet liquid pipe temperature liquid pipe TI 7 R7T Thermistor Accumulator inlet Used to detect gas pipe temperature at the accumulator inlet and others Part 1 System Outline 1 41 Functional Diagrams ESIE07 08 3 4 Refrigerant Circuit ERX250A7W1B Electronic expansion yo o ACCUMULATOR Solenoid valve High pressure switch OIL SEPARATOR Capillary tube ia Capillary tube Heat exchanger
130. ction of system refrigerant system 3 117 address undefined Remark The system operates for malfunction codes indicated in shaded squares however be sure to check and repair Part 3 Troubleshooting 3 15 Troubleshooting ESIE07 08 1 9 Malfunction Code Indication by Outdoor Unit PCB ERX125 250A7W1B Contents of malfunction Malfunction code a Abnormal discharge pressure HPS activated E3 lt Monitor mode gt Abnormal suction pressure Abnormal Pe E4 To enter the monitor mode push the Compressor lock Detection of INV compressor lock E5 MODE BS1 button when in Activation of OC Detection of STD1 compressor lock E6 Setting mode 1 Detection of STD2 compressor lock Over load over current Instantaneous over current of DC fan 1 motor EF abnormal lock of outdoor unit fan Detection of DC fan 1 motor lock 7 motor Instantaneous over current of DC fan 2 motor Refer for Monitor mode Detection of DC fan 2 motor lock Malfunction of electronic EV1 E9 lt Selection of setting item gt expansi n valve EV2 EV3 nn ee as Abnormal position signal of Abnormal position signal of DC fan 1 motor H7 y outdoor unit fan motor Abnormal position signal of DC fan 2 motor Faulty sensor of outdoor air Faulty Ta sensor short H9 emperature Faulty Ta sensor open Refer for Monitor mode Abnormal discharge pipe Abnormal Td F3 emperature
131. ctionality ESIE07 08 Electronic circuit DM am IGBT 4 1 U eee IX10A K2 ISS ei l L1 i 4 L2 J2 L3 g EIIE i S gt i N3 l U V W X11A According to the checking aforementioned it is probed that the malfunction results from the faulty inverter The following section describes supposed causes of the faulty inverter Faulty compressor ground leakage Faulty fan motor ground leakage Entry of conductive foreign particles Abnormal voltage e g overvoltage surge thunder or unbalanced voltage In order to replace the faulty inverter be sure to check for the points aforementioned Part 2 Functional Description ESIE07 08 General Functionality Power diode 1 module checking Power module checking When using the analog type of multiple tester make measurement in resistance measure When using the digital type of multiple tester make measurement in diode check mode ment mode in the x1kQ range No Measuring Criterion Remark No Measuring Criterion Remark 1 P3 U 2 to 15kQ 1 P3 U Not less It may take time 2 P3 Vv 2 P3 Vv than to determine the 3 P3 W 3 P3 W 1 2V voltage due to including capacitor charge or
132. d to change mode Local setting switch Used to make field settings 1 92 Part 1 System Outline ESIE07 08 PCB Layout 6 6 Outdoor Unit PC Board for ERX100 140A8V3B ad p Eli E The LED indicator status shown at left LED indicator status Turn off f Turn on x Flicker Turn on or off indicates the status at factory set Reactor Curing range Cover this range with an insulating sheet Testip SCAN ena neama Low Error 34 Individual E Gatch noise o xt e e e e H2P H3P H4P HSP H6P H7P DIP switches Bs2 BS3 Bs4 BSS DS1 1 and DS1 2 iJ ej o el SET RETURN TEST RESET Sets the address again when the wiring is changed or an indoor unit is added Performs the test run Used at field set Changes the set mode Demand SS e HAP Lib ZZA CLS SS ES TU y SSG ZIS B LE SS Caution Cover electric parts with an insulating sheet during inspection to prevent electic shock Part 1 System Outline 1 93 PCB Layout ESIE07 08 1 94 Part 1 System Outline ESIE07 08 Part 2 Functional Description What is in this part This part contains information on the functions used to control the system Understanding these functions is vital when diagnosing a malfunction that is re
133. dANS HAMOd woz xvn HOLOSNNOO JAVA NOISNVAX3 The illustration below shows the wiring diagram of the unit Field Wiring for EKEXMCBV3B Wiring Diagrams Outdoor Units Field wiring 5 12 LINN ONMONYH lv danddns 07313 LINN ONIONYH HIV did SVO gandia NOISNVdX3 IINOH LIFTE LIM AAA did ANON JSN S HOLIMS 1 See HOLIMS NIV 3TW28089 1 Part 1 System Outline 1 74 ESIE07 08 Wiring Diagrams Outdoor Units Notes Symbols NO A FF WwW ND oo All wiring components and materials to be procured on the site must comply with the applicable local and national codes Use copper conductors only For details see wiring diagram Install a circuit breaker for safety All field wiring and components must be provided by a licensed electrician Unit shall be grounded in compliance with the applicable local and national codes Wiring shown are general points of connection guides only and are not intended for or to include all details for a specific installation Be sure to install the
134. dada 2 39 Inverter Protection doc ias a verneveld rhenen al en won oboe 2 36 Low Outdoor Air Temperature Protection 000 cece tenes 2 45 Low Pressure Protection iii ereen aE e EIA OO Whe gk ade ah 2 32 Speciale oa ti aga a wa aie Gee ales aA ees 2 23 Startup wert noes st tala thik to Ae ee etek hea Bea dot See die 2 24 STD Compressor Overload Protection ERX250A7W1B 0000 cece eee eee eee 2 38 Thermostat Sensor in Remote Controller eee 2 42 D Diameters Pipe Connections ae 1 46 eA Soe E meme retain RA 3 39 BSc Basted A ant en ent dee een eden Macks ud on aes tek at 3 40 Efe ae Np tata set Aca Nie Mtge nce a ree Oecd toh cf stp cach nl Soe de ete ad ag te cea eaten ata E 3 43 Edita rend ars Queene tates Rd Bt tn AA IR We a dota teen A pane ae Meh Das aan de 3 45 EG rn esata a A tly men A ceed ne AA A pate a led Maced 3 48 EPA in A AA A ARA A A EN A A nak 3 50 E A ARA 3 54 Electrical Speciications sn zarah te aa copa nora even wean ned OS 1 27 Error Codes Control Box Expansion Valve Kit oee 3 25 Outdoor Units canes a ee thee eae A Lae BRA NN wade hoes 3 37 Overview ERX100 140A8V3B non neee eee 3 14 Overview ERX125 25047W1B ooocococccc eeen 3 12 System Malfunctions sns o a aa eland ge 3 97 External Appearance Outdoor Units oooocooccccoc eae iexxi PA a e la ne MA loco A 3 56 Pi nen A ad ia cares 3 57 3 59 Field Setting from Outdoor Unit Eistof Field Setting Items sa dane ia rr A
135. dd ida dd da 4 7 Setting by DIP Switches ERX100 140A8V3B oooococcccoco teen eee 4 10 Setting by DIP Switches ERX125 250A7W1B oococccccccocc tenes 4 8 Field Setting from Remote Controller eee 4 4 Field Wiring EKEXDCB AIVBB era aten oralidad En edes Aya ba eee 1 72 EKEXFCB A V3B cir rad AT a A pales ant eee lees 1 70 EKEXMEBVSB aa todo 1 74 ERX100 140A8V8B 5 ninr A A A ch ay 1 68 ERX1 25 250A7WAB Lata a ek ane tab Qua a a o Mebane Saas 1 66 Functional Parts Layout ERKEXVDO 2D0 a cai a Ba Ast tata te ei A AE en elli ed 1 8 ERX100 140A8V3B 0 bask mi A ER segs Maa ie sal dend 1 16 ERX4125A 0 WAB odie a AS 1 10 ERX200A7W IB ss Rt anr eo nr ae de 1 12 ERX250A7W1B sick clans o oa 1 14 Index ESIE07 08 Installation and Service Space ERX100 140A8V3B 22 taranta dent anderen Meade be AA NB da deine 1 21 ERX125 250A7WAB os nan sen atte nadie Deal Mae Metend etn palo Metend en 1 17 Installation Process ERX125 250A7W1B xcs iy bocce aay hee Barston es oe ea Ce Eee 4 16 J Jard dela o ic 3 63 A Dex ede OSE MARTE ae tess Sn eas Saree AN Irae de emcee kot Roger eee Mag ere Ae NAAR a tie Mewar Oy aon eaten tee Sot JOER 3 64 daa deh eek ty Ged da bd cede tout dale eed det seek nuke Adina ed da gud Sb cadet 3 66 IOs ein en A nt nd Sear ete Pe a a tae Aiea aun ten eh ees ee 3 67 Vee ital Oe ren oe its eae athe El Ste ad Oe ea ate ote a ke 3 68 Va Arn a e a VEEN B te Dent TE Me st fa gO ag ON ade lec 3 69 VA aa geet NN Ne Peete chee
136. des Wiring shown general points of connection guides only and are not intended for or to include all details for a specific installation Be sure to install the switch and the fuse to the power line of each equipment Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources 10 For detailed control box side connection see control box manual and wiring diagram Part 1 System Outline 1 69 ESIE07 08 Wiring Diagrams Outdoor Units Field Wiring for EKEXFCB A V3B 5 10 HI TIOH LNO9 TV LIDIA HITIOULNO9 TVLIDIA danddns Ald HITIOHLNO9 TV LIDIA NO GN3d3q 1 woz xv wsz AUVONVLS XOd 104LNO9 SANIT HOLSINYSHL Ma SNM HAMOd ke woor XVA T ANN NOISSINSNVYL woz xv HOLOANNOO JAWA NOISNV XA PASSAR wos xv O ws NIN 11 ZES Hey The illustration below shows the wiring diagram of the unit LINN DNMONVH HIV danddNs 07314 LINN ONMONVH HIV Field wiring HALI alla Z SZLI H SOSLILA NN 38N3
137. display First digit of Malfunction of the liquid pipe Faulty Tl sensor short J7 malfunction code temperature sensor Faulty sensor of subcool heat Faulty Tsh sensor short J9 exchanger temperature Faulty sensor of discharge Faulty Pc sensor short JA pressure Faulty sensor of suction pressure Faulty Pe sensor short JC lt Confirmation of malfunction 2 gt Faulty Inverter PC board Faulty IPM L1 Abnormal Current sensor offset Push the SET BS2 button once to Detail Ab TIGBT display Second digit of malfunction description Fauly Current rn code on next page Abnormal SP PAM over voltage f Inverter radiation fin temperature Over heating of inverter radiation fin temperature L4 rising DC output over current Inverter instantaneous over current L5 Electronic thermal Electronic thermal switch 1 L8 lt Confirmation of malfunction 3 gt Electronic thermal switch 2 Push the SET BS2 button once to Out of step display malfunction location Speed down after startup Lightening detection Stall prevention Limit time Stall prevention Current increasing Lg Stall prevention Faulty start up Abnormal wave form in startup Out of step lt Confirmation of malfunction 4 gt ee aen an Inverter transmission error LC Push the SET BS2 button once to display master or slave 1 or slave 2 and malfunction location Push the RETURN BS3 button and switches to the initial status of Monitor mode Push the MODE BS1 button and returns to
138. e compressor is likely to get faulty To make sure recheck the compressor A8P does not blink The LC malfunction YES gt A4P A8P Replace the fan driver PC board recurs gt Replace the control PC board gt End of measures The malfunction may temporarily result from on site causes Causes Instantaneous power failure open phase noises or others Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 88 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 29 LC Outdoor Unit Malfunction of Transmission Between Inverter and Control PC Board ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A r ra ERX100 140A8V3B Check the communication state between inverter PC board and control PC board by microcomputer When the correct communication is not conducted in certain period Malfunction of connection between the inverter microcomputer and outdoor control microcomputer Defect of outdoor unit PC board Defect of noise filter External factor Noise etc microcomputer monitor green on the outdoor unit PC board A1P is blinking YES gt Replace outdoor unit PC board A1P voltage between red and white of X1A on t
139. e between and of electrolytic capacitor C C Is the measured voltage 220 VDC or more YES gt Monitor the voltage Instantaneous voltage drop gt Replace the inverter PC board A1P See also Check No 5 on page 3 124 Part 3 Troubleshooting 3 107 Error Codes System Malfunctions ESIE07 08 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred 3 108 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 7 U3 Outdoor Unit Check Operation not Executed Error code Applicable models cc Lu ERX125 250A7W1B ERX100 140A8V3B Method of Check operation is executed or not malfunction detection Malfunction Malfunction is decided when the unit starts operation without check operation decision conditions Supposed causes Check operation is not executed Troubleshooting ERX125 250A7W1B Has the check operation been performed NO on Outdoor unit PC board YES gt Press and hold BS4 on the outdoor master PCB for 5 seconds or more or turn ON the local setting mode 2 3 to conduct a check operation gt Performs the check operation again and completes the check operation When a leakage detection function is needed normal operation of charging refrigerant must be completed And then start once again and complete a check o
140. e e o x e o ojo e o o x e o ojo e e o x e o ojo e e x x ee ojo o o o x dvH e o ojo e o ojo e o ojo e o ojo o ee ojo ee ojo e e o x o o o x e o ojo e o ojo e o ojo o ojo e e o x o o o o x e o ojo e o ojo e o ojo ee ee e ee ojo ee ojo ee ojo e e o x e e e x x e e o x xm deH dZH diH dZH d9H dSH N dvH x 3 3 e xio ee xk xe xk 0 3 o 3K 3 3 jee 3E 3 3 XE ee xk 3 e ee ee o xk o je xk xk 3 o 3K 3 3 He e je XX Oo o deH d2H diH 37 dZH d9H dSH dvH ek 3 ox o o 3 X je 3 deH dZH diH 7 sts 7 stg apoo uoljoungye E3 E4 E5 E6 E7 E9 H7 H9 FS F6 J2 J3 J5 J6 J7 J9 JA JC 3 17 Part 3 Troubleshooting Troubleshooting ESIE07 08 3 Blink 3 ON OFF Confirmation of malfunction
141. e following procedure to conduct the initial test operation after installation Topic See page 2 7 1 Check Work Prior to Turn Power Supply On ERX100 140A8V3B 4 35 2 7 2 Turn Power On ERX100 140A8V3B 4 35 2 7 3 Check Operation ERX100 140A8V3B 4 36 2 7 4 Confirmation on Normal Operation ERX100 140A8V3B 4 38 4 34 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 7 1 Check Work Prior to Turn Power Supply On ERX100 140A8V3B Check the below items e Power wiring e Control transmission wiring between units e Earth wire y Check on refrigerant piping y Check on amount of refrigerant charge O Is the power supply single phase 220 230V 50Hz 220V 60Hz O Have you finished a ductwork to drain O Have you detach transport fitting O Is the wiring performed as specified O Are the designated wires used O Is the grounding work completed Use a 500V megger tester to measure the insulation e Do not use a megger tester for other circuits than 220 230V circuit O Are the setscrews of wiring not loose O Is the electrical component box covered with an insulation cover completely O Is pipe size proper The design pressure of this product is 4 0MPa O Are pipe insulation materials installed securely Liquid and gas pipes need to be insulated Otherwise causes water leak O Are respective stop valves on liquid and gas line securely open O Is
142. e unit will not run for up to 12 minutes wiring normal YES After fixing incorrect wiring push and hold the RESET button on the outdoor unit PC board for 5 seconds Does a malfunction occur No gt Normal Does a UH malfunction occur NO for all indoor units in the system YES gt Replace indoor unit PC board gt Replace outdoor unit PC board A1P Part 3 Troubleshooting 3 117 Error Codes System Malfunctions ESIE07 08 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred 3 118 Part 3 Troubleshooting ESIE07 08 Additional Checks for Troubleshooting 5 Additional Checks for Troubleshooting 5 1 What Is in This Chapter Introduction This chapter explains how you must check the units to carry out troubleshooting correctly Overview This chapter contains the following topics Topic See page 5 2 Check No 1 Check on Connector of Fan Motor Power Supply Cable 3 120 5 3 Check No 2 3 121 5 4 Check No 3 Check for Causes of Rise in High Pressure 3 122 5 5 Check No 4 Check for Causes of Drop in Low Pressure 3 123 5 6 Check No 5 Check for Fan Motor Connector Only ERX100 140A8V3B 3 124 Part 3 Troubleshooting 3 119 Additional Checks for Troubleshooting ESIE07 08 5 2 Check No 1 Check on Connector of Fan Motor Po
143. ead specification differs for R410A and R407C Charging cylinder Weighting instrument used for X O HFCs Gas detector O x The same tool can be used for HFCs Vacuum pump To use existing pump for HFCs pump with reverse flow O vacuum pump adaptor must be preventive function installed Weighting instrument O Charge mouthpiece Seal material is different between R22 and HFCs s Thread specification is different between R410A and others Flaring tool Clutch O For R410A flare gauge is type necessary Torque wrench O Torque up for 1 2 and 5 8 Pipe cutter O Pipe expander O Pipe bender O Pipe assembling oil x Due to refrigerating machine oil change No Suniso oil can be used Refrigerant recovery Check your recovery device device Refrigerant piping See the chart below Only 619 1 is changed to 1 2H material while the previous material is O As for the charge mouthpiece and packing 1 2UNF20 is necessary for mouthpiece size of charge hose ESIE07 08 Introduction Copper tube material and thickness R407C R410A Pipe size B Thickness z Thickness Material Material A tmmj tmmj 6 4 O 0 8 O 0 8 69 5 O 0 8 O 0 8 912 7 O 0 8 O 0 8 15 9 O 1 0 O 1 0 19 1 O 1 0 1 2H 1 0 22 2 1 2H 1 0 1 2H 1 0 25 4 1 2H 1 0 1 2H 1 0 628 6 1 2H 1 0 1 2H 1 0 31 8 1 2H 1 2 1 2H 1 1 38 1 1 2H 1 4 1 2H 1 4 44 5 1 2H 1 6 1 2H 1 6 O Soft Annealed H Hard
144. ect connector or parts damage may be occurred Part 3 Troubleshooting 3 69 Error Codes Outdoor Units ESIE07 08 3 20 UR Outdoor Unit Malfunction of High Pressure Sensor Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A 0 ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected from the pressure detected by the high pressure sensor When the high pressure sensor is short circuit or open circuit Defect of high pressure sensor system Connection of low pressure sensor with wrong connection Defect of outdoor unit PC board The high pressure sensor is connected to X32A X17A of outdoor unit PC board A1P NO gt Connect the high pressure sensor and turn on again The relationship between the 1 VH and high pressure is normal see 2 when voltage is measured between X32A X17A pins 1 and 3 of outdoor unit PC board A1P YES gt Replace outdoor unit PC board A1P gt Replace the high pressure sensor 1 Voltage measurement point Connector X32A for ERX125 250A7W1B connector X17A for ERX100 140A8V3B Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 70 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units
145. ed WHT white YLW yellow ORG orange PNK pink GRY grey Part 1 System Outline 1 57 ESIE07 08 Wiring Diagrams Outdoor Units The illustration below shows the wiring diagram of the unit Wiring Diagram for ERX250A7W1B Wiring diagram 5 4 EN OLN O NOLUSOd LHM YOLONNOO STWWS4 30 Le DEN OLN 40 IVL3O 40 NO ysa esa ise u o B d8H d9H dH dZH 008 dZH dSH deH diH Le Os
146. eeneneeeenene venen 1 27 2 2 Specifications for DAIKIN Inverter Condensing Unit ERX125 250A SWAB i eseina vice iae an tae etea na atapa a iak casitas 1 28 2 3 Specifications for DAIKIN Inverter Condensing Unit ERX100 14048 VIB iieiaei iiaea ai E a a aa 1 31 24 Specifications for EKEXFCB A V3B EKEXDCB A V3B and EKEXMGCGBV3B tc a 1 34 25 Specifications for EKEXV50 250 annen en nenenenvenneneeeren eneen 1 36 Table of Contents ESIE07 08 3 Functional Diagrams 3 1 What Is in This Chapter nennen eneen venne vennen venne ven envenenn 1 37 3 2 Refrigerant Circuit ERX125A7W1B eener ennenennneer eneen 1 38 3 3 Refrigerant Circuit ERX200A7W1B aeron 1 40 3 4 Refrigerant Circuit ERX250A7W1B anneer eneen eneen 1 42 3 5 Refrigerant Circuit ERX100 140A8V3B eenen 1 44 3 6 Pipe Connection Diameters nanne eenen iieii 1 46 4 Switch Box Layout 4 1 What Is in This Chapter ccccceccceceeeeeeeeeeeeeeeeeeeeeeeseeaeeeesesenaeeeees 1 47 4 2 Switch Box Layout for ERX125 200A7W1B nnen eenen 1 48 4 3 Switch Box Layout for ERX250A7W1B neee eneen 1 49 4 4 Switch Box Layout for ERX100 140A8V3B nnn ereen 1 50 4 5 Switch Box Layout for EKEXDCB A V3B nennen nennen 1 51 4 6 Switch Box Layout for EKEXFCB A V3B eneen vereen 1 52 5 Wiring Diagrams Outdoor Units 5 1 What Is in This Chapter anneer ennen non nnnno no vennen venne ven eneen 1 53 5 2 Wiring Diagram for ERX125
147. eight 0 29 kg 0 066 kg Cooling minimum 5 CDB Cooling maximum 46 CDB 45 dBA Max at 10 cm from motor Liquid type Braze connection Liquid diameter OD 6 4 m 9 52 m Piping length minimum See manual depend on outdoor unit Piping length maximum See manual depend on outdoor unit Piping length equivalent Piping length chargeless See manual depend on outdoor unit Installation maximum height difference See manual depend on outdoor unit See manual depend on outdoor unit Maximum interunit level difference See manual depend on outdoor unit Heat insulation Both inlet and outlet 1 36 Part 1 System Outline ESIE07 08 Functional Diagrams 3 Functional Diagrams 3 1 What Is in This Chapter Introduction This chapter contains the following information Refrigerant circuit Pipe connection diameters Functional This chapter contains the following functional diagrams diagrams Topic See page 3 2 Refrigerant Circuit ERX125A7W1B 1 38 3 3 Refrigerant Circuit ERX200A7W1B 1 40 3 4 Refrigerant Circuit ERX250A7W1B 1 42 3 5 Refrigerant Circuit ERX100 140A8V3B 1 44 3 6 Pipe Connection Diameters 1 46 Part 1 System Outline 1 37 Functional Diagrams ESIE07 08 3 2 Refrigerant Circuit ERX125A7W1B Oj Solenoid Heat exchanger Capillary tube
148. eld Setting board from Outdoor Unit from page 4 6 onward y Conduct check operations The check operations shown below will be automatically initiated Check for erroneous wirings e Check for failure to open stop valves e Check for excessive refrigerant refilling J e Automatic judgment of piping length O Before starting the normal operation after the completion of check Check for normal operation y operations make sure indoor and outdoor units normally operate Part 4 Commissioning and Test Run Test Operation ESIE07 08 2 3 3 Air Tight Test and Vacuum Drying ERX125 250A7W1B Note Always use nitrogen gas for the airtightness test Absolutely do not open the shutoff valve until the main power ciruit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop Preparations lt Needed tools gt Gauge manifold To prevent entry of any impurities and insure sufficient pressure Charge hose valve resistance always use the special tools dedicated for R410A Use charge hose that have pushing stick for connecting to service port of shutoff valves or refrigerant charge port Vacuum pump The vacuum pump for vacuum drying should be able to lower the pressure to 100 7kPa 5 Torr 755mm Hg Take care the pump oil never flow backward into the refrigerant pipe during the pump stops
149. electronic expansion valve EV3 SH control 0 pls 0 pls Hot gas bypass valve SVP OFF OFF OFF e3 min e 3 min Ending conditions 20 sec or Ts Te lt 5 C or e Pe lt 0 6MPa e HTdi gt 110 C Indoor unit actuator Cooling oil return operation Fan Electronic expansion valve Thermostat ON unit Normal opening Stopping unit 224 pls Thermostat OFF unit Normal opening with forced thermostat ON 2 26 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 4 3 Pump down Residual Operation General If the liquid refrigerant stays in the Evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance Consequently in order to recover the refrigerant in the Evaporator while the compressor stops the pump down residual operation is conducted ERX125 250A7W1B Actuator Master unit operation Compressor 124 Hz OFF OFF Outdoor unit fan Fan control Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Accumulator oil return valve SVO ON e 5 min E bas or e Master Unit Pe lt 0 49 MPa Ending conditions e Master Unit Td gt 110 C e Master Unit Pc gt 2 94 MPa ERX100 140A8V3B Pump down residual Pump down residual Actuator i operation Step 1 operation Ste
150. else 4 U P3 Not less It may take time 4 U P3 0 3 to 0 7V 5 Vv P3 than to determine the 5 Vv P3 resistance due to 15kQ 8 w including capacitor charge 5 w Pa 7 N3 U 9 rel e 7 N3 U 8 N3 V 8 N3 V 9 N3 WwW 9 N3 W 10 U N3 2 to 15kQ 10 U N3 Not less It may take time 11 Vv N3 11 Vv N3 than to determine the 12 W N3 12 W N3 1 2V voltage due to including capacitor charge or else 2 Diode module checking When using the analog type of multiple tester make measurement in resistance measure When using the digital type of multiple tester make measurement in diode check mode ment mode in the x1kQ range No Measuring Criterion Remark No Measuring Criterion Remark 1 P1 J1 2 to 15kQ 1 P1 J1 Not less It may take time 2 P1 J2 2 P1 J2 than to determine the 3 P1 33 3 P1 33 1 24 voltage due to including capacitor charge or else 4 J1 P1 Not less It may take time 4 Ji P1 0 3 to 0 7V 5 J2 P1 than to determine the 5 J2 P1 6 33 P1 15KQ resistance due to 6 33 P1 including capacitor charge 7 N3 J1 or else 7 N3 J1 8 N3 J2 8 N3 J2 9 N3 J3 9 N3 J3 10 J1 N3 2 to 15kQ 10 J1 N3 Not less It may take time 11 J2 N3 11 J2 N3 than to determine the 12 33 N3 12 3 N3 1 2V dr lees including capacitor charge or else Part 2 Functional Description 2 9 General F
151. en The illustrations and table below show the limitations of a multi VRVIII system components system B EXV kit Daikin condensing EKEXMCB unit Indoor 1 Indoor n Allowable heigth AHU 1 lt 5m iS Etvekit 4 Total system lt 40 m lt 15 m p AHUn outdoor unit can be above lt 5m or below the AHU EXV kit n outdoor Piping Communication A B B c D E N follow std vrvi Soe consider same length VRV wiring lt 50m lt 50m 5 18 Hp as 1 indoor unit lt 5m length policy XX ESIE07 08 Introduction 1 6 External Appearance Outdoor Units ERX125 250A7W1B ERX100 140A8V3B ERX125A7W1B ERX200 250A7W1B r g y m S z E 5 l E i 0 j ERX100 140A8V3B Xxi Introduction ESIE07 08 xxii ESIE07 08 Part 1 System Outline What is in this part This part contains the following chapters Chapter See page 1 General Outline Outdoor Units 1 3 2 Specifications 1 27 3 Functional Diagrams 1 37 4 Switch Box Layout 1 47 5 Wiring Diagrams Outdoor Units 1 53 6 PCB Layout 1 77 Part 1 System Outline 1 1 ESIE07 08 Part 1 System Outline ESIE07 08 General Outline Outdoor Units 1 General Outline Outdoor Units 1 1 What Is in This Chapter Introduction This chapter contains the following information on the outdoor units Func
152. eneerenentnnserenenatnetrenanpratddeimatnanberdeetnan 3 64 JS Outdoor Unit Malfunction of Thermistor or Suction Pipe R2T for ERX125 250A7W1B R3T R5T for ERX100 140A8V3B 3 66 UE Outdoor Unit Malfunction of Thermistor R4T for Outdoor Unit Heat EX HANA ET er a rarr eron cds de taaan dende kens neder id 3 67 171 ut Outdoor Unit Malfunction of Liquid Pipe Thermistor R5T ERX125A7W1B R6T ERX200 250A7W1B R7T ERX100 140A8V3B nennen een ennenee eenen anneer eneen 3 68 49 Outdoor Unit Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor R5T ERX200 250A7W1B R6T ERX100 140A8V3B isn e cat 3 69 JR Outdoor Unit Malfunction of High Pressure Sensor nnen 3 70 JC Outdoor Unit Malfunction of Low Pressure Sensor nnen 3 72 LP Outdoor Unit Malfunction of PC Board ERX100 140A8V3B 3 74 LH Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise naven nnneen ven restten tr venen nenverenenneneenenvennenenen 3 75 LS Outdoor Unit Inverter Compressor Abnormal nennen 3 77 LE Outdoor Unit Inverter Current Abnormal annen eneen 3 80 LQ Outdoor Unit Inverter Start up Error ERX125 250A7W 1B 3 83 9 Outdoor Unit Inverter Start up Error ERX100 140A8V3B 3 85 Table of Contents ESIE07 08 3 28 LE Outdoor Unit Malfunction of Transmission Between Inverter and Control PC Board
153. er Are wire connections properly made NO Only ERX125 250A7W1 without a mistake W U V according to the Wiring Diagram Disconnect the cable from the compressor and then check the compressor for the insulation resistance NO he insulation resistance is low i e not YES Are the wire connections mixed up with those for non inverter compressor gt Make wire connections without a mistake more than Check the compressor motor coil for any broken wire Power ON Only for ERX100 140A8V3 Some phase has a broken wire Restart the compressor and then NO gt Replace the compressor check whether or not the malfunction recurs YES Has the compressor started YES gt End of work Faulty pressure equalization or else may have occurred Check the refrigerant system up at high differential pressure not less than 0 5MPa NO gt Faulty pressure equalization Check the refrigerant system Replace the inverter PCB A1P lt Are inverter output voltage same for 3 phase Does low or high pressure vary even compressor instantaneously when restarting gt Replace the compressor e Conduct checks and diagnosis of the compressor 3 46 Part 3 Troubleshooting ESIE07 08 Error C
154. er installation Otherwise the malfunction code U3 operation will be displayed and normal operation cannot be performed And the failure of Check of miswiring may also cause abnormal operation Performance may drop due to the failure of Judgment of piping length Check operation must be performed for each refrigerant piping system Checking is impossible if plural systems are being done at once The individual problems of indoor units can not be checked About these problems check by test run after the check operation is completed See page 4 31 The check operation cannot be performed in recovery or other service modes 4 24 Part 4 Commissioning and Test Run ESIE07 08 Test Operation Procedure 1 Make sure the following works are complete in accordance with the installation manual Piping work Wiring work Air tight test Vacuum drying Installation work for indoor unit 2 Calculate the additional charging amount 3 Open the valve C See figure below The valve A B and the liquid and gas side shutout valve must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port If the additional charging amount was charged fully close the valve C and go to step 5 If the additional charging amount was not charged fully go to step 4 Liquid side Outdoor unit shutoff valve Refrigerant Charge hose Gus side charg port eN shu
155. eration or after stopping the operation lt Indoor unit gt On VRV systems these sounds Normal operation Sounds like trickling or the are produces when ames Indoor E i units in operation The reason is like are produced from indoor an that the system runs in order to units in the stopped state prevent oil or refrigerant from dwelling lt Outdoor unit gt The reason is that the Normal operation Pitch of operating sounds cd changes the changes operating frequency 12 Dust comes out Dust comes out from the Dust which has deposited on the Normal operation from the system system when it restarts after inside of indoor unit is blown out the stop for an extended from the system period of time 13 Odors come out In operation Odors of room cigarettes or else The inside of the indoor unit from the system adsorbed to the inside of indoor should be cleaned unit are blown out 14 Outdoor unit fan In operation The reason is that fan revolutions Normal operation does not rotate are controlled to put the operation to the optimum state 15 LCD display 88 Immediately after turning ON The reason is that the system is Normal operation appears on the the power supply checking to be sure the remote This code is displayed for a remote controller is normal i troll period of approximately one ana minute at maximum 16 The outdoor unit After stopping operation It stops in order to prevent oil o
156. erature rises to an abnormally high level When the discharge pipe temperature rises suddenly Faulty discharge pipe temperature sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Discharge pipe temperature is YES 115 120 C 1 or higher when the gt Refrigerant shortage compression unit stop by defect etc Defect of the refrigerant malfunction system NO Pull out the discharge pipe thermistor from the outdoor PCB and then make measurement of resistance using a multiple meter Are the characteristics of the discharge pipe thermistor NO gt Replace the discharge pipe normal 3 5 400KQ thermistor 2 YES gt Replace outdoor unit PC board A1P 1 115 C for ERX125 250A7W1B 120 C for ERX100 140A8V3B 2 Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 56 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 10 F6 Outdoor Unit Refrigerant Overcharged ERX125 250A7W1B am an Error code Applicable models ERX125 250A7W1B Method of Excessive charging of refrigerant is detected by using the outside air temperature heat exchanging malfunction deicer temperature and liquid pipe temperature during a check run detection Malfunction
157. es Are there any foreign matters around YES the fan Any of the fan motor connectors X1A and YES gt Remove the foreign matters X3A or the relay harness connectors Z5C Z9C and X1A is disconnected power supply cable connector and signal cable connector have been connected to the YES gt Insert the connector disconnected gt Use connectors of the same relay harness Power supply and signal cable connectors of different colors are connected for one and the same motor Connectors of harness between the compressor inverter PCB YES color in combination for the power supply and signal cables for the relay harness e g natural color to natural color or red to red gt Insert the connectors in the and the fan inverter PCB A4P and A8P are disconnected The fuse white tubular fuse on the fan YES harness inverter PCB has a broken wire has no continuity With the connector disconnected from the fan YES gt Replace the fan inverter PCB motor the fan cannot be rotated by hand Resitance between the fan motorpower supply cable terminal and the motor frame metal part is not more than 1MW gt Replace the outdoor unit fan motor Replace the outdoor unit fan motor Part 3 Troubleshooting 3 51 Error Codes Outdoor Uni
158. etected according to the current value detected by current sensor When the current value detected by current sensor becomes 5A or lower or 40A or more during standard compressor operation Faulty current sensor A6P A7P Faulty outdoor unit PC board connector for current sensor connected to X25A X26A on outdoor unit PC board NO gt Connect the connector and operate unit again current sensors inversely connected to two STD compressors YES gt Correct the connections between the current sensors and the STD compressors Is the current sensor mounted on the T phase A6P and R phase A7P wire NO gt Mount the current sensor correctly and operate unit again gt Replace current sensor and outdoor unit PC board Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred For ERX100 140A8V3B the current sensor is integrated in the outdoor PCB A1P Part 3 Troubleshooting 3 63 Error Codes Outdoor Units ESIE07 08 3 15 J3 Outdoor Unit Malfunction of Discharge Pipe Thermistor R3T R31 32T for ERX125 250A7W1B R2T for ERX100 140A8V3B Lu Error code Applicable models ERX125 250A7W1B ERX100 140A8V3B Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor malfunction detection Malfunction When a short circuit o
159. ethod of Checking The Inverter s Power Transistors and Diode Modules Only ERX125 250A7W1B nnee eenen 1 5 Method of Replacing the Inverter s Power Transistors Modules Only ERX100 140A8V3B init dls 2 Outdoor Unit Functional Concept 2 1 What Is in This Chapter nnn ennen eennenenven er oki 2 2 Operation MOde 2 ziee sh aeta bees tk coke size tec td dr eat 2 3 Basic Controla ticas 2 4 Special Control annen eneen eneneneeneenenneeenvenenaneenveneeneneeeenvenenn 2 5 High Pressure Protection Control neee neren ennen 2 6 Low Pressure Protection Control eenen eener enneeer oneven 2 7 Discharge Pipe Protection Control anneer eneen ennen 2 8 Inverter Protection Control aeron ner enne vensenerenseeerennenenn 2 9 STD Compressor Overload Protection only for ERX250A7W1B 2 10 Injection Control only for ERX125A7W1B eee eneen 2 11 Emergency Operation nnen enenenne neren enenenerenenenenerenenenenenn 2 12 Thermostat Sensor in Remote Controller on eeenen 2 13 Electronic Expansion Valve Control neee vennen oneven 2 14 Low Outdoor Air Temperature Protection Control ee Part 3 Troubleshooting 1 Troubleshooting 1 1 What Is in This Chapter nnn ennnnneneneennenenenvennenenenenennenenenen 1 2 Symptom based Troubleshooting nnen nennen en eneen eenen eneneeen 1 3 Troubleshooting by Remote Controller anneer eneen 1 4 Self diagnosis by Wired Remote Controller neen 1 5 Operation
160. example noise etc NO gt Replace the indoor unit PC board Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be l occurred Part 3 Troubleshooting 3 27 Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 2 4 Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A AS Indoor Unit Malfunction of Moving Part of Electronic Expansion Valve Y1E pa a All indoor unit models Use a microcomputer to check the electronic expansion valve for coil conditions When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer Malfunction of moving part of electronic expansion valve Defect of indoor unit PC board Defect of connecting cable The electronic expansion valve is connected to X7A of the indoor unit PC board NO gt After connecting turn the power supply off and then back on when coil check 1 of the moving part of the electronic expansion valve is checked NO gt Replace the moving part of the electronic expansion valve The connecting YES cable is short circuited or disconnected gt Replace the connecting cable NO gt If you turn the power supply off and turn on again and it still does
161. external input terminals with the remote controller set to external ON OFF terminal Actuation of external protection device Improper field set Defect of indoor unit PC board External protection device is connected to terminals YES T1 and T2 of the indoor unit terminal gt Actuation of external protection device block ON OFF input from outside mode No 12 first code No 1 has been set to external protection device input second code No 03 by remote controller Change the second code No to 01 or 02 Indoor unit PC board replacement Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 26 Part 3 Troubleshooting ESIE07 08 Error Codes Indoor Unit Expansion Valve Kit 2 3 AY Indoor Unit PC Board Defect o Error code Applicable models All indoor unit models Method of Check data from E7PROM malfunction detection Malfunction When data could not be correctly received from the E7PROM decision conditions E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed causes Defect of indoor unit PC board Troubleshooting Turn power supply OFF then power ON again Does YE the system return to gt The indoor unit PC board is normal normal External factor other than malfunction for
162. fin 83 C e When occurring 4 times within 60 min the malfunction Fin temp standby gt code L4 is output Part 2 Functional Description 2 37 Outdoor Unit Functional Concept ESIE07 08 2 9 STD Compressor Overload Protection only for ERX250A7W1B General This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking Overview STD compressor ON A Demand to operate CT detection current value gt 15 0A If the power supply is reset while in operation v prohibition mode the prohibition timer will continue counting when the power supply is turned ON STD compressor OFF for 30 min 4 When occurring 3 times within 90 minutes the malfunction code E6 is output 2 38 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 10 Injection Control only for ERX125A7W1B General For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection Overview SVT OFF HTdi Correction value of the discharge pipe li gt 112 HTdi lt 107 s re tr temperature on the INV compressor SVT ON Part 2 Functional Description 2 39 Outdoor Unit Functional Concept ESIE0
163. fin gt 93 C Fin temp standby gt When occurring 4 times within 60 min the malfunction code L4 is output 2 36 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept ERX100 140A8V3B 1 Inverter overcurrent protection control Not limited e Inverter current lt 23 8A Inverter current gt 23 8A amp e INV upper limit frequency max Hz Limited Vv INV upper limit frequency 1 step down from current lt compressor frequency e10 sec amp Matching of frequency Inverter current gt 23 8A Y Status quo 4 Inverter current lt 23 8A continues for 3 min Without conditions INV upper limit frequency 1 step up from current 1 compressor frequency Inverter current gt 24 9A continues for 260 sec Inverter current e When occurring 4 times within 60 min the standby PO malfunction code L8 is output 2 Inverter fin temperature control Not limited e Tfin lt 75 C e INV upper limit frequency max Hz Tfin 78 C amp Limited INV upper limit frequency 1 step down from current lt q compressor frequency 10 sec Tfin gt 78 C amp eMatching of frequency Y Status quo 4 Tfin lt 75 C continues for 3 min Without conditions INV upper limit frequency 1 step up from current T
164. flickers test operation Remote controller Indicates UNDER CENTRALIZED CONTROL I on upper right Check on operation Indicates TEST OPERATION on lower left V3057 On completion of test operation LED on outdoor unit PC board displays the following 4 H3P ON Normal completion H2P and H3P ON Abnormal completion Check the indoor unit remote controller for abnormal display and correct it Part 4 Commissioning and Test Run ESIE07 08 Test Operation Malfunction code In case of an alarm code displayed on remote controller or it has shorted nek Nonconformity during installation Remedial action E3 The shutoff valve of an outdoor unit is left Open the gas side shutoff valve and the liquid side shutoff valve closed Refrigerant overcharge Recalculate the required amount of refrigerant from the piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine E4 The shutoff valve of an outdoor unit is left Open the gas side shutoff valve and the liquid side shutoff valve closed Insufficient refrigerant Check if the additional refrigerant charge has been finished cor rectly Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant F3 Refrigerant overcharge Recalculate the required amount of refri
165. g with a vacuum gauge Part 4 Commissioning and Test Run 4 21 Test Operation ESIE07 08 2 3 4 Additional Refrigerant Charge and Check Operation ERX125 250A7W1B General The outdoor unit is charged with refrigerant when shipped from the factory but depending on the size and length of the piping when installed it may require additional charging For charging the additional refrigerant follow the procedure in this chapter And then carry out the check operation 2 3 4 1 Before working About the Check whether the cylinder has a siphon pipe before charging and place the cylinder so that the refrigerant cylinder refrigerant is charged in liquid form See the figure below With siphon pipe bi Stand the cylinder upright and charge The siphon pipe goes all the way inside so the cylinder does not need be put upside down charge in liquid form Other tanks Stand the cylinder upside down and charge Caution A Always use the proper refrigerant R410A If charged with the refrigerant containing an improper material it may cause an explosion or accident R410A is a mixed refrigerant so charging it as a gas will cause the refrigerant composition to change which may prevent normal operation Shutoff Valve When operating the shutoff valve follow the procedure instructed below Operation Procedure Note Do not open the shutoff valve until 2 3 1 Check Work Prior t
166. gas pipe temperature at the accumulator inlet and others Part 1 System Outline 1 43 ESIE07 08 Functional Diagrams t ERX100 140A8V3B ircui Refrigerant C 3 5 uonoeuuog ase uu z opis Buidid ayis uo UO HOT ao1nas YUM oaren dos J Tn Hod sones Sl yy HOLVINNNIJV 9 uoums nss d U IH onlen eqn e plouajos Medeo 9 O O Jossaldwog Jor mE Pa dens pa seideo SAB E Q plousjog 8 O oe Q Z m ejiideg 4 JOU Josues dS Hi ainsseid MOT 4 Josuos nss d yH Hod soles NLA fem noy a ca a a JeBueyoxe yeoH ane Bunejnben OINSSAd of von me onfren uoIsuedxe 91401 99 3 ad Jebueyoxe jesy edid ajqnoq SO 10 SAJEA uolsuedxe 9140 199 3 3D052712 Part 1 System Outline 1 44 ESIE07 08 Functional Diagrams Components The table below contains the different components of the functional diagrams No
167. gerant from the piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine The shutoff valve of an outdoor unit is left Open the gas side shutoff valve and the liquid side shutoff valve closed Insufficient refrigerant Check if the additional refrigerant charge has been finished cor rectly Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant F6 Refrigerant overcharge Recalculate the required amount of refrigerant from the piping length and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine U2 Insufficient supply voltage Check to see if the supply voltage is supplied properly U3 If a check operation has not been per Perform a check operation formed U4 No power is supplied to an outdoor unit Turn the power on for the outdoor unit UA If no dedicated indoor unit is being used Check the indoor unit If it is not a dedicated unit replace the indoor unit UF The shutoff valve of an outdoor unit is left Open the gas side shutoff valve and the liquid side shutoff valve closed If the right indoor unit piping and wiring are Make sure that the right indoor unit piping and wiring are properly not properly connected to the outdoor unit connected to the outdoor unit UH If the interunit wiring has not be connected Make sure the interunit
168. gree SH constant ERX100 140A8V3B Actuator Operation Remarks Compressor Compressor PI control Used for high pressure protection control low pressure protection control discharge pipe tem perature protection control and compressor oper ating frequency upper limit control with inverter protection control Outdoor unit fan Cooling fan control Four way valve OFF Main electronic expansion valve EV1 480 pls Subcooling electronic expansion valve PI control EV3 Hot gas bypass valve SVP OFF This valve turns on with low pressure protection control Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 3 2 Compressor PI Control General Carries out the compressor capacity Pl control to maintain Te at constant during cooling operation to ensure stable unit performance Cooling operation Controls compressor capacity to adjust Te to Te Low pressure equivalent saturation achieve target value TeS temperature C Te set value Make this setting while in Setting TeS Target Te value mode 2 Varies depending on Te setting operating Te setting frequency etc L M Normal H factory setting 3 6 9 Part 2 Functional Description 2 17 Outdoor Unit Functional Concept ESIE07 08 2 3 3 Compressor Step Control
169. h the button operation Indoor unit system code Display Product classification System classification ET F ERX system Standard control box FCJ Indoor unit model code display Indoor unit type code Display Type Model Inspection test Push the button A N A operation Cc N A E N A oe F N A AAE H N A J Built in EKEXD F Outdoor unit model code display L NA Y P N A Inspection test Push the button L N A operation 6 N A 3 N A Y 5 N A Testoperation Outdoor model code Test operation mode Display Type Model l AAE ERX ERXW1 Inspection test Push the button operation V2775 3 10 Part 3 Troubleshooting ESIE07 08 Troubleshooting 1 6 Remote Controller Service Mode How to enter the service mode Normal operation mode C Push the button for 4 seconds or longer Field set mode Service mode Push the button for 4 seconds or longer VF020 Service mode 1 Select the mode No operation method P Set the desired mode No with the o button 2 Make the settings required for each mode Modes 40 41 For details refer to the table in next page 3 Return to the normal operation mode Push the button one time Overview table and address data er Function Contents and operation method Remote controller display example un Malfunction Display malfunction hysteresis a hysteresis display The his
170. harge Side No obstacle above Obstacle above too 1 Stand alon e installation 2 Series installation 2 or more Part 1 System Outline 1 23 ESIE07 08 General Outline Outdoor Units 1 11 3 Obstacles on Both Suction and Discharge Sides Pattern 1 When the obstacles on the discharge side is higher than the unit There is no height limit for obstructins on the intake side No obstacle above Obstacle above too 1 Stand alone installation Close the bottom of the installation frame to prevent the discharged air from being bypassed L gt H The relations between H A and L are as follows L A O lt L lt 1 2H 750 L lt H 1 2 lt L lt H 1000 H lt L Set the stand as L lt H 2 Series installation 2 or more Close the bottom of the installation frame to prevent the discharged air from being bypassed Se 1000 or more L gt H The relations between H A and L are as follows L A 0 lt L lt 1 2H 1000 L lt H 1 2 lt L lt H 1250 H lt L Set the stand as L lt H 1 24 Part 1 System Outline General Outline Outdoor Units ESIE07 08 Pattern 2 When the obstacles on the discharge side is lower than the unit There is no height limit for obstructins on the intake side No obstacle above Obstacle above too
171. he NO when the compressor starts up compressor YES gt Check the harness and then replace it if necessary gt End of measures The malfunction may temporarily result from on site causes Causes Instantaneous power failure open phase noises or others Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 106 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 6 Uc Power Supply Insufficient or Instantaneous Failure ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Uc ERX100 140A8V3B Detection of voltage of main circuit capacitor built in the inverter and power supply voltage When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply voltage are detected Power supply insufficient Instantaneous power failure Defect of outdoor unit fan motor Defect of outdoor control PC board A1P Is the power supply voltage 200 240V 10 NO gt Correct power supply P N resistance not NO less than several hundred of ohms gt Field factors Check No 5 Is the resistance above standard value NO gt Replace the fan motor When the compressor is running measure the voltag
172. he YES inverter unit is the power supply voltage Vv When the LC malfunction occur again NO replace control PC board gt Replace outdoor unit PC board A1P gt Check the noise filter A3P for disconnection and check the power supply wiring Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 89 Error Codes Outdoor Units ESIE07 08 3 30 PY Outdoor Unit Inverter Over Ripple Protection ERX125 250A7W1B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes wo ERX125 250A7W1B3 Imbalance in supply voltage is detected in PC board Imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter Consequently the increased ripple is detected When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while the unit operation is continued P1 will be displayed by pressing the inspection button When the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes Open phase Voltage imbalance between phases Defect of main circuit capacitor Defect of inverter PC board Defect of K2 relay in inverter PC board Improper main circuit wiring 3 90 Part 3 Trouble
173. he capacity setting adaptor is not connected When a capacity that does not exist for that unit is set You have forgotten to install the capacity setting adaptor Defect of indoor unit PC board The indoor unit PC NO board was replaced with a replacement PC board YES Was the capacity setting adaptor mounted NO gt Replace the indoor unit PC board when replacing the PC board YES gt Replace the indoor unit PC board gt Install a capacity setting adaptor Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 30 Part 3 Troubleshooting ESIE07 08 Error Codes Indoor Unit Expansion Valve Kit 2 6 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A All indoor unit models Malfunction detection is carried out by temperature detected by heat exchanger thermistor When the heat exchanger thermistor becomes disconnected or shorted while the unit is running Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Connector is connected to X12A of the NO gt Connect the thermistor and turn on oar PC again Resistance is normal when measured after disconnecting the thermistor R2
174. he indoor unit This is however limited to when the field setting for the thermostat sensor in remote controller is set to Use Graph If there is a significant difference in the preset temperature and the suction temperature fine adjustment control is carried out using a body thermostat sensor or using the sensor in the remote controller near the position of the user when the suction temperature is near the preset temperature Sey THS A o Preset temperature Ts a ately EN SKS RS RR Te gee cP 30 SK SEK amp 28 Duels 26 24 22 20 AA reset AAA state lt gt EN N CRA EN o Cece 16 16 18 20 22 24 26 28 30 32 34 Suction temperature TH1 Range in which thermostat Range in which body sd Diff tial thermostat sensor can be erential sensor in remote controller can be used used 12 14 EEE PEE BEE EEE EE VG003 2 42 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept Example When cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A gt F This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temperatures from 18 C to 23 C A gt C Remote controller thermostat sensor is used for
175. he switch box layout A3P X1M A2P A1P X1M A1P AGP K2M rear layer Item Description A1P Printed circuit board main front layer A2P Printed circuit board noise filter rear layer A3P Printed circuit board inverter rear layer A4P Printed circuit board fan rear layer AGP Printed circuit board current sensor front layer K2M Magnetic contactor X1M A1P Terminal strip control A1P X1M Terminal strip power supply C H selector Not used Part 1 System Outline 1 49 Switch Box Layout ESIE07 08 4 4 Switch Box Layout for ERX100 140A8V3B The illustration below shows the switch box layout A2P A3P C H selector X2M A1P X1M Item Description PCB A1P Printed circuit board main PCB A2P Printed circuit board inverter PCB A3P Printed circuit board noise filter CH selector Not used X1M Terminal strip power supply X2M Terminal strip control C4 Capacitor 1 50 Part 1 System Outline ESIE07 08 Switch Box Layout 4 5 Switch Box Layout for EKEXDCB A V3B The illustration below shows the switch box layout Y Description Printed circuit board Transformer 220V 21 8V X1M Item PCB A1P TIR X1M Terminal strip power supply amp interconnection wir
176. ic to the operation mode Reference Operating pressure of high pressure switch Operating pressure 4 0MPa Reset pressure ERX125 250A7W1B 2 85MPa ERX100 140A8V3B 3 0MPa Actuation of outdoor unit high pressure switch Defect of High pressure switch Defect of outdoor unit PC board Instantaneous power failure Faulty high pressure sensor 3 40 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting Check for the points shown below 1 Is the stop valve open 2 Is the HPS connector properly connected to the main PCB 3 Does the high pressure switch have continuity Are the NO three points above OK Connect the Service Checker Reset the operation using the remote controller and then restart the operation Mount a pressure gauge on the high pressure service port Does the stop due to malfunction E3 recur YES Characteristics of the high NO Is the HPS operating value normal i e 4 0MPa gt Rectify defective points if any NO Replace the HPS gt gt Replace the high pressure sensor pressure sensor normal Is the pressure detected with NO the PCB normal See 2 YES gt Replace the main PCB The high pressure has really become high V The high pressure sensor is normal and the pressure detected with the PCB is also no
177. increase of high pressure when a malfunction occurs this compressor switch is activated at high pressure of 4 0 MPa or more to stop the compressor opera tion WwW Capillary tube Used to return the refrigerating oil separated through the oil separator to the compres sor 1 R1T Thermistor Outdoor air Ta Used to detect outdoor temperature correct discharge pipe temperature and others 2 R2T Thermistor Suction pipe Ts Used to detect suction pipe temperature 3 R3T Thermistor INV discharge Used to detect discharge pipe temperature make the temperature protection control of pipe Tdi compressor and others 4 R4T Thermistor Heat exchanger Used to detect liquid pipe temperature of air heat exchanger and others deicer Tb 5 R6T Thermistor Liquid pipe TI Used to detect liquid pipe temperature 6 R7T Thermistor Accumulator inlet Used to detect gas pipe temperature at the accumulator inlet and others Ts1 Part 1 System Outline 1 39 Functional Diagrams ESIE07 08 3 3 Refrigerant Circuit ERX200A7W1B Electronic Filter expansion valve Heat exchanger O ACCUMULATOR High pressure sensor Solenoid valve t Check valve Filter op High pressure OIL SEPARATOR Capillary tube Filter Capillary tube Low pressure sensor Ps Stop valve _ With service port on on site piping side t7 9mm flare connect
178. ing Part 1 System Outline 1 51 Switch Box Layout ESIE07 08 4 6 Switch Box Layout for EKEXFCB A V3B The illustration below shows the switch box layout KIR X1M K2R TIR PCB A1P PCB A3P X2M PCB A2P Item Description PCB A1P Printed circuit board PCB A2P Printed circuit board for voltage conversion PCB A3P Printed circuit board power supply KIR Magnetic relay operation compressor on off K2R Magnetic relay error status TIR Transformer 220V 21 8V X1M Terminal strip power supply amp electronic expansion valve X2M Terminal strip interconnection wiring 1 52 Part 1 System Outline ESIE07 08 Wiring Diagrams Outdoor Units 5 Wiring Diagrams Outdoor Units 5 1 What Is in This Chapter Introduction This chapter contains the wiring diagrams of the outdoor units 3 phase and 1 phase Outdoor units This chapter contains the following wiring diagrams Topic See page 5 2 Wiring Diagram for ERX125A7W1B 1 54 5 3 Wiring Diagram for ERX200A7W1B 1 56 5 4 Wiring Diagram for ERX250A7W1B 1 58 5 5 Wiring Diagram for ERX100 140A8V3B 1 60 5 6 Wiring Diagram for EKEXFCB A V3B 1 62 5 7 Wiring Diagram for EKEXDCB A V3B and EKEXMCBV3B 1 64 5 8 Field Wiring for ERX125 250A7W1B 1 66 5 9 Field Wiring for ERX100 140A8V3B 1 68 5 10 Field Wiring for EKEXFCB A V3B 1 70 5 11
179. ing connection Diameter OD mm 9 5 Type Brazing connection Diameter OD mm 15 9 19 1 22 2 Heat insulationvt Both liquid and gas Capacity control method Inverter controlled Capacity control 50 100 Safety devices High pressure switch Fan driver overload protector Overcurrent relay Inverter overload protector PC board fuse Standard accessories Item Installation manual Quantity 1 Standard accessories Item Operation manual Quantity 1 Standard accessories Item Connection pipes Quantity 4 Notes 1 Nominal cooling capacities are based on evaporating temperature of 6 C outdoor temperature 35 CDB equivalent refrigerant piping 7 5m level difference Om 2 Sound power level is an absolute value that a sound generates Sound pressure level is a relative value depending on the distance and acoustic environment For more details please refer to sound level drawings Sound values are measured in a semi anechoic room Compressor output is a compressor at nominal point Part 1 System Outline 1 29 Specifications ESIE07 08 Electrical specifications Power supply Current Voltage range Wiring connections Power supply intake The table below contains the electrical specifications ERX125A7W1B ERX200A7W1B ERX250A7W1B Name wi Phase 3N Frequency Hz 50 Voltage Vv 400 Nominal running Cooling A 5 1 7 5 11 3 current RLA Starting current MSC A 74 Zmax
180. ion 4TW27315 1A 1 40 Part 1 System Outline ESIE07 08 Functional Diagrams Components The table below contains the different components of the functional diagrams No Symbol Name Function remark A M1C Inverter compressor INV Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter while Standard compressor is operated with commercial power supply only The number of operating steps is as follows when Inverter compressor is oper ated in combination with Standard compressor ERX200 24 steps D M1F Inverter fan Since the system is of air heat exchanging type the fan is operated at 9 step rotation speed by using the inverter F Y2E Electronic expansion valve PI control is applied to keep the outlet superheated degree of subcooling heat Subcool EV2 exchanger constant G Y1S Solenoid valve Hot gas SVP Used to prevent the low pressure from transient falling J Y2S Solenoid valve Oil return Used to return oil from the accumulator to the compressor SVO N S1NPH High pressure sensor Used to detect high pressure O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV In order to prevent the increase of high pressure when a malfunction occurs this compressor switch is activated at high pressure of 4 0 MPa or more to stop the compressor opera tion V Subcooling heat exchanger Used to sub
181. ir C1 C4 Capacitor R2T Thermistor M1C discharge DS1 Dip switch R3T Thermistor Suction1 E1HC Crankcase heater R4T Thermistor Coil FINTH Thermistor fin R5T Thermistor Suction 2 F1U F4U Fuse T 6 3A 250V R6T Thermistor Subcool F6U Fuse T 5 0A 250V R7T Thermistor Liquid pipe H1P H8P Pilot lamp serv monitor orange S1NPH Pressure sensor High H2P prepare test nn flickering S1NPL Pressure sensor Low H2P Malfunction detection light up S1PH Pressure switch High HAP Light emitting diode VIR Power module Service monitor green A1P V2R V3R Diode module HBP INV pilot lamp VAT IGBT Service monitor green A1P X1M Terminal strip Power supply K1M Magnetic contactor M1C X1M Terminal strip C H selector X4AP K1R Magnetic relay Y1S X2M Terminal strip Control K2R Magnetic relay Y2S Y1E Electronic expansion valve Main K3R Magnetic relay Y3S Y3E Electronic expansion valve Subcool K4R Magnetic relay E1HC Y1S Solenoid valve 4 way valve K5R Magnetic relay Y2S Solenoid valve Hot gas LAR Reactor Y3S Solenoid valve U L circuit M1C Motor Compressor Z1C Z7C Noise filter Ferrity core M1F Motor Fan upper Z1F Z4F Noise filter Notes 1 This wiring diagram only applies to the outdoor unit 2 L live N neutral Terminal strip reo Connector e Connection 1 Protective earth screw ggg Field wiring mm Relay connector Noiseless earth o Termin
182. ischarge pipe pressure sensor 3 70 JC Cs Cs Malfunction of suction pipe pressure sensor 3 72 LO 3 Cs Cs Inverter system error L1 y 3 3 Malfunction of PC board 3 74 L4 3 Cs 3 Malfunction of inverter radiating fin temperature 3 75 5 rise 8 L5 xK 3 3 DC output overcurrent of inverter compressor 3 77 5 L8 Cs ces Inverter current abnormal 3 80 O L9 3 Cs Cs Inverter start up error 3 83 LA ze Cs 3 Malfunction of power unit LC E Cs 3 Malfunction of transmission between inverter and 3 89 control PC board P1 3 it 3 High voltage of capacitor in main inverter circuit 3 92 P4 os Cs ut Malfunction of inverter radiating fin temperature 3 93 rise sensor UO it e i Low pressure drop due to refrigerant shortage or 3 100 electronic expansion valve failure U1 3 3 Cs Reverse phase open phase 3 103 U2 ces ECS Power supply insufficient or instantaneous failure 3 107 U3 Cs Cs Check operation is not completed 3 109 U4 3 Cs Cs Malfunction of transmission between indoor and 3 110 outdoor units U5 E Cs Cs Malfunction of transmission between remote 3 112 D controller and indoor unit gt N U5 xt e Failure of remote controller PC board or setting 3 112 during control by remote controller U8 Cs Malfunction of transmission between main and 3 114 sub remote controllers malfunction of sub remote controller UA E Cs Cs Improper combination of indoor and outdoor 3 115 units indoor units and remote controller UH ces ccs Malfun
183. it Functional Concept ESIE07 08 2 8 Inverter Protection Control General Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase ERX125 250A7W1B 1 Inverter overcurrent protection control Nomal operation A Invertercurrent gt 14 7A amp INV upper limit frequency 1 step downfrom current compressor frequency y Inverter current gt 14 7A Inverter current lt 14 7A INV upper limit frequency max control Under inverter currentprotection Inverter current lt 14 7A continues for 20 sec or more P nv upper limit frequency 1 step up from d current compressor frequency Inverter current gt 16 1A continues for 260 sec Inverter current standby lt gt e When occurring 4 times within 60 min the malfunction code L8 is output 2 Inverter fin temperature control Nomal operation A Tfin gt 84 C INV upper limit frequency 1 step 1 min down from current compressor rps y Tfin lt 81 C INV upper limit rps max Tfin gt 84 C Under fin temperature protection control Inverter fin temp lt 81 C continues for 3 min or more D INV upper limit frequency 1 step 1 min up P from current compressor frequency Interval T
184. items 2Power wiring 2Control transmission wiring between units 2Earth wire Check on refrigerant piping insulation materials y Check airtight test and vacuum drying v Check on amount of refrigerant charge Check the stop valves for conditions O Is the wiring performed as specified O Is the designated wire used O Is the wiring screw of wiring not loose O Is the grounding work completed O Is the insulation of the main power supply circuit deteriorated Use a 500V megger tester to measure the insulation 1 2 Do not use a megger tester for other circuits than 200V or 240V circuit 1 Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended period of time after the refrigerant charge with the stop valve Terminal open and the power supply OFF the refrigerant may be mixed in the compressor thus decreasing the Dryer insulation resistance lt gt 1000W Heat the compressor as shown on the Sem right and then recheck the insulation Heat the left side of the terminal for a period of approximately 15 minutes O Is the pipe size proper O Is the pipe insulation material installed securely Liquid and gas pipes need to be insulated Otherwise causes water leak O Have the airtight test and the vacuum drying been conducted according to the procedure in the Installation Manual O Is
185. k the surrounding area and turn on again Multi Core cable used for the indoor unit remote controller transmission wiring Switch to double core independent cable replacement 3 112 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred Part 3 Troubleshooting 3 113 Error Codes System Malfunctions ESIE07 08 4 10 UB Indoor Unit Malfunction of Transmission between Master and Sub Remote Controllers Error code Applicable Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Caution A All models of indoor units In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal Normal transmission does not continue for specified period Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board SS1 of remote controller PC boards is set to MAIN Using 2 remote controllers control Set SS1 to MAIN the power supply off once and then back on SS1 of both remote controllers is set to SUB Turn the power off and then back on If a m
186. lated to the functional control Overview This part contains the following chapters Chapter See page 1 General Functionality 2 3 2 Outdoor Unit Functional Concept 2 13 Part 2 Functional Description 2 1 ESIE07 08 Part 2 Functional Description ESIE07 08 General Functionality 1 General Functionality 1 1 What Is in This Chapter Overview This chapter contains the following topics Topic See page 1 2 Thermistor Resistance Temperature Characteristics 24 1 3 Pressure Sensor 2 6 1 4 Method of Checking The Inverter s Power Transistors and Diode Modules 2 7 Only ERX125 250A7W1B 1 5 Method of Replacing the Inverter s Power Transistors Modules Only 2 10 ERX100 140A8V3B Part 2 Functional Description 2 3 General Functionality ESIE07 08 1 2 Thermistor Resistance Temperature Characteristics Outdoor unit thermistor R1T Indoor unit For air suction R1T For liquid pipe R2T For gas pipe R3T Outdoor unit for fin thermistor R1T Outdoor unit kor outdoor ar RIT For suction pipe 1 R3T For heat exchanger R4T For suction pipe 2 R5T For Subcooling heat exchanger outlet R6T For Liquid pipe R7T k9 TC 0 0 TC 0 0 0 5 T C 0 0 0 5 40 5 20 197 81 192 08 30 16 10 15 76 8 a 19 186 53 181 16 31 15 43 15 10 6 88 0 18 175 97 170 94 32 14 79 14
187. le When using the digital type of multiple tester make measurement in diode check mode checking Tester terminal Criterion Remark C U Not less than 0 3V It may take time to V s a determine the voltage W including due to capacitor charge or else U C Not less than 0 3V V including co W U C 0 3 to 0 7V vV including W C U 0 3 to 0 7V V including W There needs to be none of each value variation The following abnormalities are also doubted besides the PC board abnormality Faulty compressor ground fault ground leakage Faulty fan motor ground leakage Part 2 Functional Description 2 11 General Functionality ESIE07 08 2 12 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 Outdoor Unit Functional Concept 2 1 What Is in This Chapter Introduction This chapter will explain more details about the various functions that are programmed for the sky air R410A inverter outdoor units Overview This chapter contains the following topics Topic See page 2 2 Operation Mode 2 14 2 3 Basic Control 2 15 2 4 Special Control 2 23 2 5 High Pressure Protection Control 2 30 2 6 Low Pressure Protection Control 2 32 2 7 Discharge Pipe Protection Control 2 34 2 8 Inverter Protection Control 2 36 2 9 STD Compressor Overload Protection only for ERX250A7W1B 2 38 2 10 Injection Control only fo
188. led x H lt L 1 One row of stand alone installation Part 1 System Outline 1 26 ESIE07 08 Specifications 2 Specifications 2 1 What Is in This Chapter Introduction This chapter contains the following information Technical specifications Electrical specifications Outdoor units This chapter contains the following specifications Topic See page 2 2 Specifications for DAIKIN Inverter Condensing Unit ERX125 250A7W1B 1 28 2 3 Specifications for DAIKIN Inverter Condensing Unit ERX100 140A8V3B 1 31 2 4 Specifications for EKEXFCB A V3B EKEXDCB A V3B and EKEXMCBV3B 1 34 2 5 Specifications for EKEXV50 250 1 36 Part 1 System Outline 1 27 Specifications ESIE07 08 2 2 Specifications for DAIKIN Inverter Condensing Unit ERX125 250A7W1B Technical specifications Nominal capacity COP Nominal input PED Category Casing Dimensions Weight Packing information Heat exchanger Fan Compressor Operation range Sound level nominal The table below contains the technical specifications ERX125A7W1B ERX200A7W1B ERX250A7W1B 2 Colour Daikin white Material Painted galvanised steel Unit Height mm 1680 Width mm 635 930 Depth mm 765 Packing Height mm 1855 Width
189. lfunction Confirmation of malfunction oo ala aaa aaa aaa cme cs melee lalalala ala a ala laa la N st LO N e st wo N st LO N st LO N S TT III iii P1 x ke ele y ojo ok xk oo ojo 3 o e P4 7 e x o o elo o o 5 eje uo 3 ke o k 3 e ee e e e o e 3 CIE SE U2 3 e ee kx e e o e 3 o 7 eo oio ex 3 ele ee o ojo X e 3 ele ee o e o o U3 XK ojo Xx ojo ojo w 3 ej ojojo o U4 XK olx ojo xk ele e ee x 3 ojojo o o ug na w o o k 3 e o o o x UA 3 3K y ele ee x ojo xm x 3 ojojo o EEE 3 ojojo o Xe 3 eee o 3 ej oj ties o me UH XK X O 3K HK 3 ele ee o x ojo xm x UF 3 Se OE 3 3 ojojoejo e je Display of contents of Display of contents of Display 1 of Display 2 of malfunction first digit malfunction second malfunction in detail malfunction in detail digit 1 O Master O BC Slave1 ECS Slave2 BC BC System 3 24 Part 3 Troubleshooting ESIE07 08 Error Codes Indoor Unit Expansion Valve Kit 2 Error Codes Indoor Unit Expansion Valve Kit 2 1 What Is in This Chapter Introduction In the first stage of the troubleshooting sequence it is important to correctly interpret the error code on the remote controller display The error code helps you to find the cause of the problem Shutdown For some errors the system only shuts down when the error occur
190. lfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A F6 Outdoor Unit Refrigerant Overcharged ERX100 140A8V3B am an ERX100 140A8V3B Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature during a check operation When the amount of refrigerant which is calculated by using the heat exchanging deicer temperature during a check run exceeds the standard Refrigerant overcharge Misalignment of the thermistor for heat exchanger Defect of the thermistor for heat exchanger Check the mounting condition of the temperature sensors of the heat exchanging deicer thermistor in the piping Are the above thermistor installed on pipes correctly Remove the heat exchanging deicer thermister from the outdoor PCB and measure resistance with a tester Is the characteristic of the above thermistor normal NO gt Install thermistor correctly Replace thermistor Refrigerant overcharged Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 59 Error Codes Outdoor Units ESIE07 08 3 12 HT Outdoor Unit Abnormal Outdoor Fan Motor Signal pa i
191. m abnormal in other u9 Push the SET BS2 button and set system yeno pe bee e system the LED display to a setting item Erroneous field setting System transmission malfunction UA Overconnection malfunction of indoor units Malfunction of field setting Refrigerant abnormal Connection error BP unit lt Confirmation of malfunction 1 gt Faulty system malfunction Wiring error Auto address error UH Push the RETURN BS3 button ei wiring ang piping no Conflict in wiring and piping UF once to display First digit of 9 y malfunction code lt Confirmation of malfunction 2 gt Push the SET BS2 button once to Detail display Second digit of malfunction description code on next page lt Confirmation of malfunction 3 gt Push the SET BS2 button once to display malfunction location lt Confirmation of malfunction 4 gt Push the SET BS2 button once to display master or slave 1 or slave 2 and malfunction location Push the RETURN BS3 button and switches to the initial status of Monitor mode Push the MODE BS1 button and returns to Setting mode 1 Part 3 Troubleshooting 3 23 Troubleshooting ESIE07 08 3 Blink 3 ON e OFF 6 Confirmation ot malfunction Confirmation of malfunction Confirmation of ma
192. m system or other indoor unit system abnormal in own system Push the SET BS2 button once to Detail Erroneous field setting System transmission malfunction UA a Second digit of malfunction description Overconnection malfunction of indoor units epee on next Malfunction of field setting page Refrigerant abnormal Multi ID abnormal Alarm of TSS field setting UA Alarm of CT address setting lt Confirmation of malfunction 3 gt Faulty system malfunction Wiring error Auto address error UH Transmission error in accessory Malfunction of multi level connection UJ Push the SET BS2 button once to devices Alarm of multi level connection UJ display malfunction location Conflict in wiring and piping no Conflict in wiring and piping UF setting for system lt Confirmation of malfunction 4 gt Push the SET BS2 button once to display master or slave 1 or slave 2 and malfunction location Push the RETURN BS3 button and switches to the initial status of Monitor mode Push the MODE BS1 button and returns to Setting mode 1 Part 3 Troubleshooting 3 19 ESIE07 08 3 Blink 4 ON e OFF dZH d9H dSH 3 3 Display 2 of S dvH ojo X ojo X EEK AR X JEJEJE ojo X He He ojo XK xk JEJEJE ojo X X ee ojo X eK He IE OE E ojo X ojo malfunction in detail O Master O XK Slave XK 0 Slave2 E 3 System
193. maximum amount when charging the refrigerant Do not perform the refrigerant charging operation under working for the indoor unit When opening the front panel make sure to take caution to the fan rotation during the working After the outdoor unit stops operating the fan may keep rotation for a while If operation is performed within 12 minutes after the indoor and outdoor units are turned on H2P will be lit on and the compressor will not operate In order to ensure uniform refrigerant distribution it may take up to around 10 minutes for the compressor to start up after the unit starting operating This is not a malfunction The refrigerant charge port is connected to the piping inside the unit charging When the unit is shipped from the factory the unit s internal piping is already charged with refrigerant so be careful when connecting the charge hose After adding the refrigerant make sure to close the lid of the refrigerant charging port The tightening torque for the lid is 11 5 to 13 9 Nm See page 4 22 for details on how to handle shutoff valves When done or when pausing the refrigerant charging operation close the valve of the refrigerant tank immediately If the tank is left with the valve open the amount of refrigerant which is properly charged may be off the point More refrigerant may be charged by any remaining pressure after the machine is stopped About check Make sure to perform the check operation aft
194. me V3 Phase 1 Frequency Hz 50 Voltage 230 Voltage range Minimum 207 Maximum 253 Wiring connections For power supply Quantity 3 Remarl Earth wire included For connection with Quantity 2 indece Remark F1 F2 For remote controller Quantity 2 2 2 2 2 Remar PI P2 P1 P2 P1 P2 P1 P2 P1 P2 For expansion valve kit Quantity 6 Remark Y1 Y6 Thermistors liquid pipe Quantity 2 Remark R1 R2 Thermistors gas pipe Quantity 2 Remark R3 R4 Thermistor air Quantity 2 2 2 Remark R5 R6 R5 R6 R5 R6 ON OFF Quantity 2 Remark TV TZ Error signal Quantity 2 2 _ Remark C1 C2 C1 C2 pus Operation signal Quantity 2 2 Remark C3 C4 C3 C4 Capacity step Quantity 2 2 EN oa Remark C5 C6 C5 C6 Power supply intake Bottom remark for service Part 1 System Outline 1 35 Specifications ESIE07 08 2 5 Specifications for EKEXV50 250 Technical specifications The table below contains the technical specifications Specification Casing Dimensions Weight Packing Operation range Sound level nominal Standard accessories EKEXV50 EKEXV63 EKEXV80 EKEXV100 EKEXV125 EKEXV140 EKEXV200 EKEXV250 Colour Ivory Material Metal Packing Height 457 Packing Width 270 Packing Depth 120 Unit Height 401 Unit Width 215 Unit Depth 78 Machine weigth 29 Gross weight 3 4 Material Carton EPS W
195. mm 796 1055 Depth mm 860 Unit kg 157 185 238 Packed unit kg 180 215 271 Carton kg 3 80 4 02 Wood kg 19 15 20 85 Plastic kg 0 215 0 265 Specifications Length mm 1483 1778 N of rows 54 Fin pitch 2 00 N of passes 8 18 Face area m 1 762 2 112 N of stages 2 Empty tubeplate hole 0 Tube type HI XSS 8 Fin Type Non symmetric waffle louvre Treatment Hydrophylic and anti corrosion resistant Type Propeller Quantity 1 Air flow rate Cooling m min 95 171 185 nominal at 230V External static pressure Pa 78 Pa in high static pressure Discharge direction Vertical Motor Quantity 1 Model Brushless DC Output 350 750 Quantity 2 Motor Quantity 1 Model Inverter Speed rpm 6300 7980 6300 Motor output kw 2 8 3 8 1 2 Type Hermetically sealed scroll compressor Crankcase heater Ww 33 Quantity 1 Model ON OFF Speed rpm 2900 Motor output kw 45 Type Hermetically sealed scroll compressor Crankcase heater Ww 33 Cooling Minimum CDB 5 0 Maximum CDB 43 0 Sound power dBA 72 78 Sound pressure dBA 54 57 58 1 28 Part 1 System Outline ESIE07 08 Specifications ERX125A7W1B ERX200A7W1B ERX250A7W1B Refrigerant Type R410A Charge kg 6 2 7 7 8 4 Control Electronic expansion valve N of circuits 1 Refrigerant oil Type Synthetic ether oil Charged volume l 0 1 7 0 4 1 7 1 1 7 1 6 Piping connections Liquid Type Braz
196. mode to ON procedure The respective expansion valve of indoor and outdoor units are fully opened H2P turns to display TEST OPERATION blinks TEST OPERATION and UNDER CENTRALIZED CONTROL are displayed on the remote controller and the indoor outdoor unit operation is prohibited After setting do not cancel Setting Mode 2 until completion of refrigerant recovery operation 2 Collect the refrigerant using a refrigerant recovery unit See the instruction attached to the refrigerant recovery unit for more detail 3 Press Mode button BS1 once and reset Setting Mode 2 Part 4 Commissioning and Test Run 4 11 Field settings ESIE07 08 1 6 Setting of Vacuuming Mode General In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves Operating 1 With Setting Mode 2 while the unit stops set Refrigerant recovery Vacuuming mode to ON The procedure expansion valves of indoor and outdoor units fully open and some of solenoid valves open H2P blinks to indicate the test operation and the remote controller displays Test Operation and Under centralized control thus prohibiting operation After setting do not cancel Setting Mode 2 until completion of Vacuuming operation 2 Use the vacuum pump to perform vacuuming operation 3 Press Mode button BS1 once and reset Setting Mode 2
197. n or heating if outdoor air is low in temperature stop the fan forcibly Details Cooling Turn OFF the fan for a period of 60 minutes at a suction temperature of 5 C or lower and fan operation In order to monitor the outdoor air temperature however turn ON the fan for a period of one minute and turn OFF the fan again at a temperature of 5 C or lower after the said timer completes the operative period Reset the 60 minute timer when the fan stops running Part 2 Functional Description 2 45 Outdoor Unit Functional Concept ESIE07 08 246 Part 2 Functional Description ESIE07 08 Part 3 Troubleshooting What is in this part This part contains the following chapters Chapter See page 1 Troubleshooting 3 3 2 Error Codes Indoor Unit Expansion Valve Kit 3 25 3 Error Codes Outdoor Units 3 37 4 Error Codes System Malfunctions 3 97 5 Additional Checks for Troubleshooting 3 119 Part 3 Troubleshooting 3 1 ESIE07 08 Part 3 Troubleshooting ESIE07 08 Troubleshooting 1 Troubleshooting 1 1 What Is in This Chapter Introduction When a problem occurs you have to check all possible malfunctions This chapter gives a general idea of where to look for malfunctions Not all repair procedures are described Some procedures are considered common practice Overview This chapter contains the f
198. n this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P ON Can also be set during operation described above Indoor unit If T1 T2 is closed during operation described above the UH or U4 mal function indicator blinks Returns to normal when automatic setting is com plete 4 40 Part 4 Commissioning and Test Run ESIE07 08 Index AQ sales an aarde ee Haenen ede Ne ee rn ear de see 3 26 Aldana a adas AAA dad data dated an dos 3 27 O NO NN 3 28 Additional Refrigerant Charge and Check Operation ERX1257 29047WAB Sotillo de ido ee 4 22 Air Tight Test and Vacuum Drying ERX125 250A7WTB rans 2s terende EA EA BRA NA DREES BAE EA 4 20 O NN 3 30 Auto Restart after Power Failure Reset ooooocccccccocococo eee 4 5 B Basic Control Compressor PICO ica a dateen enen var ee bee ec 2 17 Compressor Step Control ooooccoccocccooo eaea 2 18 Electronic Expansion Valve PI Control 000000 cece eee tee 2 20 List of Functions in Manual Operation onee 2 16 Outdoor Unit Fan Control in Cooling Operation 0 00000 cee eee 2 21 Step Control of Outdoor Unit Fans oenen 2 22 Before Test Run ERX125 250A7WAB 25 0 tnt eh os Satna deja ier ptt bate ake oh Set ate bee 4 30 C A A A a e eee aN e on 3 31 tdt ce dt rd ele nies del 3 32 UA ARA EDER ARE Ade Pian ELA
199. nce Is the malfunction code P4 YES displayed on the remote gt To P4 troubleshooting controller Does the malfunction code L4 YES recur when the unit starts gt a the outdoor PCB A1P as operation wer LNO gt Continue operation Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 76 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 24 15 Outdoor Unit Inverter Compressor Abnormal r LN Error code Applicable models ERX125 250A7W1B ERX100 140A8V3B Method of Malfunction is detected from current flowing in the power transistor malfunction detection Malfunction When an excessive current flows in the power transistor decision conditions Instantaneous overcurrent also causes activation Supposed causes Defect of compressor coil disconnected defective insulation Compressor start up malfunction mechanical lock Defect of inverter PC board Troubleshooting ERX125 250A7W1B E Is the stop valve NO open y YES Check the compressor cable for disconnection and flaws The compressor cable has a defect NO Disconnect the cable from the compressor and then check the compressor for the insulation resistance gt On site causes Open the stop valve Power OFF YES gt Replace the cable and then securely connect the connectors
200. nction Code Indication by Outdoor Unit PCB ERX100 140A8V3B Contents of malfunction Malfunction code sient a In phase malfunction of DIII Net Detection of DIII Net Eil O Abnormal discharge pressure HPS activated E3 To enter the monitor mode push the Abnormal suction pressure Abnormal Pe E4 MODE BS1 button when in Compressor lock Detection of INV compressor lock ES Setting mode 1 Over load over current Detection of DC fan 1 motor lock E7 abnormal lock of outdoor unit fan Detection of DC fan 2 motor lock motor Malfunction of electronic EV1 E9 expansion valve EV3 Faulty sensor of outdoor air Faulty Ta sensor short H9 lt Selection of setting item gt temperature Push the SET BS2 button and set cue narge pipe Abnormal Td F3 the LED display to a setting item piay 9 Abnormal heat exchanger Refrigerant over charge F6 temperature Faulty sensor of discharge pipe Faulty Tdi sensor short J3 temperature Faulty sensor of suction pipe Faulty Ts1 sensor short J5 temperature lt Confirmation of malfunction 1 gt Femy 12 sanso neit Faulty sensor of heat exchanger Faulty Tb sensor short J6 Push the RETURN BS3 button temperature once to
201. nctions ESIE07 08 Troubleshooting Check for connector connections Remove and insert the connectors shown below Furthermore check the connectors for terminal conditions and continuity e X1M power receiving terminal lt gt X400A A2P e A2P X401A lt gt X10A A3P e AIP X28A lt gt X6A A3P Power OFF e A3P X61A lt gt X402A A2P If any wiring has damage replace the e A3P X1A_ lt gt X403A A2P harness e ASP P1 P2 lt gt Reactor terminal L1R e A3P P3 N3 lt gt P1 N1 A4P e A4P P2 N2 lt gt P1 N1 A8P Has YES ate ASP Replace the inverter PC board a If the PC board replaced is badly damaged the compressor is likely to get faulty To make sure recheck the compressor YES Has the fan driver gt A4P A8P Replace the fan driver PC caused damage board NO If the PCB replaced is badly damaged the fan motor is likely to get faulty To make sure recheck the compressor Va Turn ON the power supply YES Stop standby before the gt Recheck for the power supply If there fan is no problem with the power supply N replace the A2P noise filter PC board o If the malfunction recurs replace the inverter PC board Power ON Stop standby YES Caution A gt Recheck for the power supply If there is no problem with the power supply replace the A3P inverter PC board NO If the PC board replaced is badly damaged compressor is likely to get The U2 malfunction recurs faulty To make sure recheck t
202. nd EKEXMCBV3B Technical specifications Casing Dimensions Weight Packing Operation range Standard accessories The table below contains the technical specifications EKEXFCBV3B EKEXDCBV3B EKEXFCBAV3B EKEXDCBAV3B EKEXMCBV3B Colour White grey Material Resin Unit Height mm 132 Width mm 400 Depth mm 200 Packing Height mm 215 Width mm 495 Depth mm 310 Unit kg 3 8 3 5 3 8 3 5 3 5 Packed unit kg 4 8 45 4 8 45 45 Material Carton EPS Plastic Weight kg 0 38 0 24 0 09 Cooling Minimum CDB 5 Maximum CDB 46 em Thermistor R1T Quantity 0 1 0 1 1 em Thermistor R2T R3T Quantity 2 2 2 2 2 em Insulation sheet Quantity 2 2 2 2 2 em Rubber sheet Quantity 2 2 2 2 2 em Wire to wire splice Quantity 4 6 4 6 6 em Installation and operation manual Quantity 1 1 1 1 1 em Screw nut Quantity 6 8 6 8 9 em Tie wrap Quantity 6 6 6 6 6 em Capacity setting adaptor Quantity 5 5 T 7 8 em Stopper closing cup Quantity 2 0 2 0 0 1 34 Part 1 System Outline ESIE07 08 Specifications Electrical The table below contains the electrical specifications specifications EKEXFCBV3B EKEXDCBV3B EKEXFCBAV3B EKEXDCBAV3B EKEXMCBV3B Power supply Na
203. nd hold the RESET button on the master outdoor unit PC Board for 5 seconds The unit will not operate for up to 12 minutes Is indoor outdoor and outdoor outdoor unit transmission wiring normal All indoor unit remote controllers of the same refrigerant system display U4 YES Replace the indoor unit PC board Fix the indoor outdoor unit transmission wiring Reset the power supply The voltage between terminals L1 and N of the outdoor unit PC board is 220 240 V Outdoor unit PC board microcomputer monitor HAP blinks NO Supply 220 240 V The fuse on the outdoor unit s PC board is burnt YES Replace the fuse The secondary voltage o the transformer is about 22 24 V Replace the transformer Replace outdoor unit PC Operation ready lamp board A1P H2P is blinking YES icap does not gool JES gt Push and hold the RESET A button on the outdoor unit PC O board for 5 seconds Is indoor outdoor and outdoor NO outdoor unit transmission gt Fix the indoor outdoor unit wiring normal transmission wiring gt Replace the outdoor unit PC board A1P Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred Part 3 Troubleshooting 3 111 Error Codes System Malfunctions ESIE07 08
204. nect connector or parts damage may be occurred Part 3 Troubleshooting 3 103 Error Codes System Malfunctions ESIE07 08 4 5 Ue Outdoor Unit Power Supply Insufficient or Instantaneous Failure ERX125 250A7W1B Error code uc Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes ERX125 250A7W1B Detection of voltage of main circuit capacitor built in the inverter and power supply voltage When the voltage aforementioned is not less than 780V or not more than 320V or when the current limiting voltage does not reach 200V or more or exceeds 740V Power supply insufficient Instantaneous power failure Open phase Defect of inverter PC board Defect of outdoor control PC board Main circuit wiring defect Faulty compressor Faulty fan motor Faulty connection of signal cable 3 104 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions Troubleshooting Check for power supply voltage Voltage between phases 380 to 415V Phase voltage 220 to 240V Power ON Unbalanced power supply Not more than 2 Phase voltage of not more than approx 5V YES NO On site causes Make proper wire connections without open phase erroneous connections or erroneous order of phases gt On site causes Disconnect the cable from the compressor and then check the compressor
205. ng device valve C Field piping gt Refrigerant flow R 410A cylinder with siphon Refrigerant charging operation procedure STEP 1 Open the liquid and gas side shutoff valves The valve A C must be closed The valve A C means the valves in the figure above Display of normal system LED display 4 Blink 34 ON OFF SERV C H SELECTOR 4 LED display MONITOR MODE TEST HWL L N O P DEMA ND MULTI Default status of IND MASTER SLAVE shipped HAP H1P H2P H3P H4P H5P H6P H7P H8P Single system 3 o o Ees o o o O O STEP 2 If necessary set the field setting by using the dip switch on the outdoor unit PC board A1P STEP 3 Follow this procedure Close the EL COMPO BOX lid and all front panel except on the side of the EL COMPO BOX 1 and turn the power to the outdoor unit and all connected indoor units 2 After H2P stop blinking about 12 minutes after turning on the power check LED displays as shown in the table Display of normal system and the system is normal state If H2P is blinking check the malfunction code in the remote controller and correct the malfunction in accordance with Remote controller display malfunction code on page 4 28 1 Lead the refrigerant charge hose etc from the pipe intake All front panels must be closed at the procedure 9 2 If you perform the refrigerant charging operation within the refrigerant system
206. nitor green VAR V2R Power module A3P K1 Magnetic relay X1A X2A Connector M1F K2 Magnetic contactor M1C X1M Terminal strip Power supply K2M Magnetic contactor M2C X1M Terminal strip Control A1P K1R Magnetic relay K2M Y2E Electronic expansion valve Subcool K3R Magnetic relay Y1S Y1S Solenoid valve Hot gas K4R Magnetic relay Y2S Y2S Solenoid valve Oil return K7R Magnetic relay E1HC Z1C Z7C Noise filter Ferrite core K8R Magnetic relay E2HC Z1F Noise filter With surge absorber L1R Reactor M1C M2C Motor Compressor Notes ggg Field wiring y Terminal strip foo Connector This wiring diagram only applies to the outdoor unit 3 Indication of parts outside switchbox o Terminal 1 Protective earth screw 4 Refer to the installation manual for connection of the F1 F2 transmission wiring and how to use BS1 BS5 and DS1 DS2 switch 5 Do not operate the unit by short circuiting protection device S1PH 6 Colors BLK black BLU blue BRN brown GRN green RED red WHT white YLW yellow ORG orange PNK pink GRY grey Part 1 System Outline 1 59 ESIE07 08 Wiring Diagrams Outdoor Units for ERX100 140A8V3B The illustration below shows the wiring diagram of the unit iagram D iring WwW Wiring diagram 5 5 LNOWS nova AT aw WEX dVH NOILvo01
207. not help replace the indoor unit PC board 1 Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 28 Part 3 Troubleshooting Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 Table Normal Pin No 1 White 2 Yellow 3 Orange 4 Blue 5 Red 6 Brown 1 White x O x O x Approx Approx 3000 1500 2 Yellow x O x O Approx Approx 3000 1500 3 Orange x O x Approx 1500 4 Blue x O Approx 1500 5 Red x 6 Brown O Continuity x No continuity 3 29 Part 3 Troubleshooting Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 2 5 Au Indoor Unit Malfunction of Capacity Determination Device Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A o C All indoor unit models Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PC board and whether the value is normal or abnormal is determined Operation and 1 When the capacity code is not contained in the PC board s memory and t
208. ntrol when setting by each indoor unit mode No 20 22 and 23 have been selected push the button 3 and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 4 Push the 5 Push the 6 Push the 7 Push the eb 8 upper button 4 and select FIRST CODE NO 9 lower button 5 and select the SECOND CODE NO button 6 once and the present settings are SET 3 button 7 to return to the NORMAL MODE Example If during group setting and the time to clean air filter is set to FILTER CONTAMINATION HEAVY SET MODE NO to 10 FIRST CODE NO to 0 and SECOND CODE NO to 02 4 4 Part 4 Commissioning and Test Run ESIE07 08 Field settings 1 3 Auto Restart after Power Failure Reset General For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off However for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure For the above reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be
209. o Turn Power Supply On ERX125 250A7W1B on page 4 18 are completed If the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation Be sure to use the correct tools The shutoff valve is not a back seat type If forced it to open it might break the valve body When using a service port use the charge hose After tightening the cap make sure no refrigerant gas is leaking 4 22 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 1 Tightening torque The sizes of the shutoff valves on each model and the tightening torque for each size are listed in the table below Size of Shutoff Valve 125 type 200 type 250 type Liquid side shutoff valve 9 5 Gas side shutoff valve 15 9 o 19 1 b 25 4 The 250 type corresponds to the 22 2 diameter onsite piping using the accessory pipe Tightening torque Shutoff valve Tightening torque N m Turn clockwise to close j Cap size Shaft valve body valve lid Service port 9 5 5 4 6 6 Hexagonal wrench 13 5 16 5 11 5 13 9 12 7 8 1 9 9 4 mm 18 0 22 0 15 9 13 5 16 5 Hexagonal wrench 22 5 27 5 6mm 19 1 27 0 33 0 Hexagonal wrench 25 4 8mm Service port U Cap J NS EN Seal section N pe Hex holes Shaft valve bod 2 T
210. o open Remove the cap and turn the shaft counterclockwise with the hexagon wrench JISB4648 Turn it until the shaft stops Make sure to tighten the cap securely For the tightening torque refer to the item Tightening Torque 3 To close Remove the cap and turn the shaft clockwise with the hexagon wrench JISB4648 Securely tighten the valve until the shaft contacts the main body seal Make sure to tighten the cap securely For the tightening torque refer to the item Tightening Torque Part 4 Commissioning and Test Run 4 23 Test Operation ESIE07 08 2 3 4 1 Procedure of adding refrigerant charging and check operation Electric shock warning A Caution A Note About refrigerant Make sure to close the EL COMPO BOX lid before turning on the power when performing the refrigerant charging operation Perform the setting on the PC board A1P of the outdoor unit and check the LED display after the power is on via the inspection door which is in the EL COMPO BOX lid Use an insulated rod to operate the push buttons via the EL COMPO BOX s inspection door There is a risk of electric shock if you touch any live parts since this operation must be performed with the power on Make sure to use the protect tool protective groves and goggles when charging the refrigerant Due to a danger of liquid hammer the refrigerant must not be charged over the allowable
211. od of approximately after turning ON the power mode of micro computer one minute supply operation 3 4 Part 3 Troubleshooting ESIE07 08 Troubleshooting Symptom Supposed Cause Countermeasure 5 The system The remote controller displays The system stops due to an Remove causes of electrical makes malfunction codes U4 and interruption in communication noises intermittent U5 and the system stops but between units caused by f a If these causes are removed the stops restarts after a lapse of electrical noises coming from F a i system will automatically restart several minutes equipment other than air a operation conditioners 6 COOL HEAT The remote controller displays This remote controller has no Use a remote controller with selection is UNDER CENTRALIZED option to select cooling operation option to select cooling operation disabled CONTROL The remote controller displays COOL HEAT selection is made Use the COOL HEAT selection UNDER CENTRALIZED using the COOL HEAT selection remote controller to select cool or CONTROL and the remote controller heat COOL HEAT selection remote controller is provided 7 The system This symptom occurs The system is in preparation Wait for a period of approximately conducts fan operation but not immediately after turning ON the power supply mode of operation 10 minutes cooling or heating operation 8 The airflow rate Even
212. odes Outdoor Units Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 47 Error Codes Outdoor Units ESIE07 08 3 6 E6 Outdoor Unit STD Compressor Motor Overcurrent Lock ERX125 250A7W1B Error code E5 Applicable models ERX125 250A7W1B Method of Detects the overcurrent with current sensor CT malfunction detection Malfunction Malfunction is decided when the detected current value exceeds the below mentioned value for decision conditions 2 seconds 400 V unit 15 0A Supposed causes Closed stop value Obstacles at the air outlet Improper power voltage Faulty magnetic switch Faulty compressor Faulty current sensor A6P A7P Troubleshooting Is the stop valve NO open gt Open the stop valve YES Obstacle exists YES around the air outlet gt Remove the obstacle NO Is the NO power supply voltage gt Correct the power voltage normal Is the magnetic switch K2M K3M normal YES Check the wiring from power supply current sensor A6P A7P MgS K2M K3M compressor NO gt Replace the magnetic switch iri NO Is pee gt Correct wiring T YES N Is current sensor O gt Replace the corresponding correct 1 current sensor ES A6P or A7P gt Replace compressor 3 48 Part 3 Troublesho
213. of Remove obstacle s indoor or outdoor unit Clogged air filter s Clean the air filter s Enclosed outdoor unit s Remove the enclosure Improper set temperature Set the temperature to a proper degree Airflow rate set to LOW Set it to a proper airflow rate Improper direction of air diffusion Set it to a proper direction Open window s or door s Shut it tightly In cooling Direct sunlight received Hang curtains or shades on windows In cooling Too many persons staying in a room In cooling Too many heat sources e g OA equipment located in a room 4 The system The system stops and If the OPERATION lamp on the Normal operation The system does not immediately restarts remote controller turns ON the _ will automatically start operation operate operation system will be normal These after a lapse of five minutes Pressing the TEMP ADJUST Symptoms indicate that the button immediately resets the System is controlled so as not to system put unreasonable loads on the system The remote controller displays The system is controlled with Operate the system using the UNDER CENTRALIZED centralized controller Blinking COOL HEAT centralized remote CONTROL which blinks for a display indicates that the system controller period of several seconds cannot be operated using the when the OPERATION button remote controller is depressed The system stops immediately The system is in preparation Wait for a peri
214. ollowing topics Topic See page 1 2 Symptom based Troubleshooting 34 1 3 Troubleshooting by Remote Controller 3 8 1 4 Self diagnosis by Wired Remote Controller 3 9 1 5 Operation of The Remote Controller s Inspection Test Operation Button 3 10 1 6 Remote Controller Service Mode 3 11 1 7 Overview of Error Codes ERX125 250A7W1B 3 12 1 8 Overview of Error Codes ERX100 140A8V3B 3 14 1 9 Malfunction Code Indication by Outdoor Unit PCB ERX125 250A7W1B 3 16 1 10 Malfunction Code Indication by Outdoor Unit PCB ERX100 140A8V3B 3 21 Part 3 Troubleshooting 3 3 Troubleshooting ESIE07 08 1 2 Symptom based Troubleshooting Symptom Supposed Cause Countermeasure 1 The system does not start operation at all Blowout of fuse s Turn Off the power supply and then replace the fuse s Cutout of breaker s If the knob of any breaker is in its OFF position turn ON the power supply If the knob of any circuit breaker is in its tripped position do not turn ON the power supply ON gt Knob gt Tripped OFF Circuit breaker Power failure After the power failure is reset restart the system 2 The system starts operation but makes an Blocked air inlet or outlet of Remove obstacle s immediate stop indoor or outdoor unit Clogged air filter s Clean the air filter s 3 The system does not cool or heat air well Blocked air inlet or outlet
215. ominal running current RLA A 15 9 20 2 22 2 Starting current MSC 15 9 20 2 22 2 Zmax List No requirements Minimum circuit amp MCA A 27 0 Maximum fuse amps FLA A 32 0 Total overcurrent amps TOCA A 27 0 Full load amps FLA A 0 3 0 3 Fan motor Voltage Minimum Vv 10 Maximum Vv 10 Wiring connections For power supply Quantity 3 Remark Earth wire included For connection with Quantity 2 control box Remark FE F3 Power supply intake Both outdoor unit and control box Symbols MCA Min Circuit Amps TOCA Total Over current Amps MFA Maximum Fuse Amps see note 6 RLA Rated Load Amps FLA Full Load Amps MSC Starting Current see note 7 Notes 1 RLA based on the following conditions Indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB 2 Toca means the total value of each OC set 3 Voltage range Units are suitable for use on electrical systems where the voltage supplied to the unit terminals is not below or above the listed range limits Maximum allowable voltage unbalance between phases is 2 Select wire size based on the larger value of MCA or TOCA 6 Instead of fuse use circuit breaker MFA is used to select circuit breaker and the ground fault circuit interrupter earth leakage circuit breaker 7 MSC means the maximum current during start up of the compressor Part 1 System Outline 1 33 Specifications ESIE07 08 2 4 Specifications for EKEXFCB A V3B EKEXDCB A V3B a
216. ontains the following topics Topic See page 1 2 Field Setting from Remote Controller 44 1 3 Auto Restart after Power Failure Reset 4 5 1 4 Field Setting from Outdoor Unit 4 6 1 5 Setting of Refrigerant Recovery Mode 4 11 1 6 Setting of Vacuuming Mode 4 12 1 7 Check Operation Detail ERX125 250A7W1B 4 13 1 8 Check Operation Detail ERX100 140A8V3B 4 14 Part 4 Commissioning and Test Run 4 3 Field settings ESIE07 08 1 2 Field Setting from Remote Controller General Wired Remote Controller lt BRC1C61 62 gt Individual function of indoor unit can be changed from the remote controller At the time of installation or after service inspection repair make the local setting in accordance with the following description Wrong setting may cause malfunction When optional accessory is mounted on the indoor unit setting for the indoor unit may be required to change Refer to information in the option handbook UNIT NO SECOND CODE NO MODE NO FIELD FIRST Lt ya SETTING SET MODE CODE NO VO292 1 When in the normal mode press the button for a minimum of four seconds and the FIELD SET MOD 2 Select the desired MODE NO with the button 2 E is entered 3 During group co
217. or 1 Voltage measurement point Connector X31A for ERX125 250A7W1B connector X18A for ERX100 140A8V3B Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 72 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Graph Outdoor unit PC board A1P 5V X31A i X18A 4 Red 5 5 GND E To Q Black o Microcomputer A D input 2 White 8 a D 3 2 Measure voltage here 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on page 2 6 Note Connector X31A for ERX125 250A7W1B connector X18A for ERX100 140A8V3B Part 3 Troubleshooting 3 73 Error Codes Outdoor Units ESIE07 08 3 22 LI Outdoor Unit Malfunction of PC Board ERX100 140A8V3B rz Error code Applicable models ERX100 140A8V3B Method of Detect malfunctions by current value during waveform output before compressor startup pol Detect malfunctions by current sensor value during synchronized operation at the time of startup Detect malfunctions using an SP PAM series capacitor overvoltage sensor Malfunction In case of overcurrent OCP during waveform output decision conditions When the current sensor malfunctions during synchronized operation When overvoltage occurs in SP PAM In case of IGBT malfunction Supposed causes Faulty outdoor PC board A1P IPM failure Current
218. or Unit 4 10 U8 Indoor Unit Malfunction of Transmission between Master and Sub 3 114 Remote Controllers 4 11 UA Excessive Number of Control Boxes 3 115 4 12 UH Malfunction of System Refrigerant System Address Undefined 3 117 Part 3 Troubleshooting 3 97 Error Codes System Malfunctions ESIE07 08 4 2 U0 Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure ERX125 250A7W1B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes cz ERX125 250A7W1B Short of gas malfunction is detected by discharge pipe temperature thermistor Microcomputer judge and detect if the system is short of refrigerant Malfunction is not decided while the unit operation is continued Out of gas or refrigerant system clogging incorrect piping Defect of thermistor R2T or R4T Defect of pressure sensor Defect of outdoor unit PC board A1P 3 98 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions Troubleshooting Low pressure is 0 1 MPa or less Cooling Out of gas closing of stop valve or refrigerant system is clogged Requires check of The voltage of X31A pins 2 and 3 on main outdoor unit PC board A1P is 0 8 VDC or less Low pressure sensor output voltage 2 Replace main
219. ors hd 40 CD HCS e Le i i a s PHC4 nta Lc SEN Connectors The table below describes the PCB connectors Connector Connected to Description X1A A1P X18A Printed Circuit Board X2A A1P X13A Printed Circuit Board X3A A3P X2A Printed Circuit Board Power Supply X4A X2M Terminal Strip DC Capacity Control 1 90 Part 1 System Outline ESIE07 08 PCB Layout Power supply PCB Connectors The illustration below shows the PCB connectors The table below describes the PCB connectors Connector Connected to Description X1A Power Supply 1N 50Hz 230V X2A A2P X3A Printed Circuit Board For Voltage Conversion Part 1 System Outline 1 91 PCB Layout ESIE07 08 6 5 Outdoor Unit PC Board for ERX125 250A7W1B 2 Set mode display LED 3 Mode setting switch _ Connection terminal for transmission use dle cau g eeel g g 1 Microcomputer normal monitor 4 Local setting switch Se o F1F 2 F1F 2 Q1 Q2 Indoor Outdoor Outdoor Outdoor Multi outdoor 1 2 8 4 Microprocessor normal monitor This monitor blinks while in normal operation and turns on or off when a malfunction occurs Set mode display LED LEDs dispaly mode according to the setting Mode setting switch Use
220. oting ESIE07 08 Error Codes Outdoor Units Note 1 Abnormal case The current sensor value is 0 during STD compressor operation The current sensor value is more than 15 0A during STD compressor stop Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 49 Error Codes Outdoor Units ESIE07 08 3 7 ET Outdoor Unit Malfunction of Outdoor Unit Fan Motor Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes ma ERX125 250A7W1B ERX100 140A8V3B Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs When the fan runs with speed less than a specified one for 6 seconds or more when the fan motor running conditions are met When connector detecting fan speed is disconnected only ERX125 250A7W1B When malfunction is generated 4 times the system shuts down Malfunction of fan motor The harness connector between fan motor and PC board is left in disconnected or faulty connector Fan does not run due to foreign matters tangled Clearing condition Operate for 5 minutes normal 3 50 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting ERX125 250A7W1B Turn OFF the power supply and then wait for a period of 10 minut
221. otor Quantity 1 1 1 Model JT100G VDL T2 JT100G VDL T2 JT100G VDL T2 Type Hermetically sealed scroll Hermetically sealed scroll Hermetically sealed scroll compressor compressor compressor Speed rpm 6480 6480 6480 Motor output kw 25 3 0 3 5 Starting method Direct on line Direct on line Direct on line Crankcase heater Ww 33 33 33 Operation range Cooling Minimum CD 5 5 5 B Maximum CD 46 46 46 B Sound level nominal Cooling Sound power dBA 66 67 69 Sound pressure dBA 50 51 53 Refrigerant Type R410A R410A R410A Charged kg 4 00 4 00 4 00 Control Expansion valve Expansion valve Expansion valve electronic type electronic type N of circuits 1 1 1 Part 1 System Outline 1 31 Specifications ESIE07 08 Refrigerant oil Piping connections Capacity control method Capacity control Safety devices Safety devices Safety devices Safety devices Standard accessoires Standard accessoires Standard accessoires Type ERX100A8V3B Daphne FVC68D ERX125A8V3B Daphne FVC68D ERX140A8V3B Daphne FVC68D Charged volume 1 5 1 5 1 5 Liquid Type Flare connection Flare connection Flare connection Diameter OD mm 9 52 9 52 9 52 Gas Type Flare connection Flare connection Braze connection Diameter OD mm 15 9 15 9 19 1 Drain Quantity 3 3 3 Diameter OD mm 26x3 26x3 26x3 Heat insulation Both liquid and gas pipes Both liquid and g
222. outlook and the dimensions of the unit mm dimensions HOLE FOR ANCHOR BOLT 4 M12 Installation and See page 1 21 service space 1 6 Part 1 System Outline ESIE07 08 General Outline Outdoor Units Components The table below contains the different components of the unit z p Component Gas pipe connection A Liquid connection pipe 9 5 flare Service port in the unit 2x Electronic connection and grounding terminal M5 in switch box Refrigerant piping intake Power supply wiring intake Control wiring intake CO NI Al B WIN Drain outlet Gas pipe The table below contains the gas pipe connections for the following models connections Model A ERX100A8V3B 15 9 flare ERX125A8V3B 15 9 flare ERX140A8V3B 19 1 flare Part 1 System Outline 1 7 General Outline Outdoor Units ESIE07 08 1 5 ERKEXV50 250 Functional Parts Layout Functional parts The illustration below shows the functional parts layout of the unit mm layout 27 So mero is
223. p 2 Compressor 124 Hz Full load 52 Hz Full load Outdoor unit fan Fan control Fan control Four way valve OFF OFF Main electronic expansion 480 pls 240 pls valve EV1 Subcooling electronic expan 0 pls 0 pls sion valve EV3 Hot gas bypass valve SVP OFF OFF Ending conditions 2 sec 2 sec Part 2 Functional Description 2 27 Outdoor Unit Functional Concept ESIE07 08 2 4 4 Standby Restart standby Used to forcedly stop the compressor for a period of minutes in order to prevent the frequent ON OFF of the compressor and equalize the pressure within the refrigerant system Actuator Operation Compressor OFF Outdoor unit fan Ta gt 30 C STEP4 Ta lt 30 C OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized EV2 3P EV3 1P 0 pls Hot gas bypass valve SVP OFF Accumulator oil return valve SVO 3P only OFF Injection SVT ERX125A7W1 only OFF Ending conditions 3 min 3P 2 min 1P Crankcase heater In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode control is used to control the crankcase heater ERX125 250A7W1B only Discharge pipe temperature lt 70 C Crankcase heater gt Crankcase heater OFF e ON Discharge pipe temperature gt 75 C 2 28 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 4 5 Stopping Oper
224. paid for the occurrence of the following situation Caution 1 The air conditioner starts operation suddenly after power failure reset or the main power supply 1 turned on again Consequently the user might be surprised with question for the reason why 2 In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates Part 4 Commissioning and Test Run 4 5 Field settings ESIE07 08 1 4 Field Setting from Outdoor Unit Contents Topic See page 1 4 1 List of Field Setting Items 4 7 1 4 2 Setting by DIP Switches ERX125 250A7W1B 4 8 1 4 3 Setting by Dip Switches ERX100 140A8V3B 4 10 4 6 Part 4 Commissioning and Test Run ESIE07 08 Field settings 1 4 1 List of Field Setting Items This following section indicates the list of field setting items For the lists of dip switch contents Setting mode 1 and Setting mode 2 refer to information in tables shown on the following page onward For setting items of 1 refer to detailed information provided on page page 4 4 onward Setting item Content and objective of setting Overview of setting procedure 7 Emergency If the compressor has a failure used to Make this setting while in Setting mode 2 operation 1 prohibit the operation of compressor s For system with a single o
225. peration Troubleshooting ERX100 140A8V3B Has the check NO operation performed on gt Press the BS4 on PC board on the Outdoor unit PC master outdoor unit for 5 seconds or board more to execute check operation YES gt Replace the main PC board on the outdoor unit Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be 1 occurred Part 3 Troubleshooting 3 109 Error Codes System Malfunctions ESIE07 08 4 8 UH Malfunction of Transmission between Indoor Units Error code Applicable Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes c ERX125 250A7W1B ERX100 140A8V3B Microcomputer checks if transmission between control box and outdoor units is normal When transmission is not carried out normally for a certain amount of time Indoor to outdoor outdoor to outdoor transmission wiring F1 F2 disconnection short circuit or wrong wiring Outdoor unit power supply is OFF System address does not match Defect of outdoor unit PC board Defect of indoor unit PC board 3 110 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions Troubleshooting Has the indoor or outdoor unit PC board been replaced or has the indoor outdoor or outdoor outdoor unit transmission wiring been modified YES gt Push a
226. port UNF7 16 20 1 4 Flare UNF1 2 20 5 16 Flare with adaptor Differences Equipped with function to prevent reverse oil flow Previous vacuum pump can be used by installing adaptor xiii Introduction ESIE07 08 Leak tester Refrigerant oil Air compal Specifications Hydrogen detecting type etc Applicable refrigerants R410A R407C R404A R507A R134a etc Differences Previous testers detected chlorine Since HFCs do not contain chlorine new tester detects hydrogen Specifications Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle Offers high rust resistance and stability over long period of time Differences Can be used for R410A and R22 units xiv ESIE07 08 Introduction Gauge manifold for R410A Charge hose for R410A Specifications High pressure gauge 0 1 to 5 3 MPa 76 cmHg to 53 kg cm Low pressure gauge 0 1 to 3 8 MPa 76 cmHg to 38 kg cm 1 4 gt 5 16 2min gt 2 5min No oil is used in pressure test of gauges For prevention of contamination Temperature scale indicates the relationship between pressure and temperature in gas saturated state Differences Change in pressure Change in service port diameter Hose with ball valve Specifications Working pressure 5 08 MPa 51 8 kg cm Rupture pressure 25 4 MPa 259 kg cm Available with and without hand operate valve that prevent
227. pressing the AIRFLOW In heating operation when the Normal operation is not RATE SET button makes no room temperature reaches the reproduced changes in the airflow rate set degree the outdoor unit will according to the stop while the indoor unit is setting brought to fan LL operation so that no one gets cold air Furthermore if fan operation mode is selected when other indoor unit is in heating operation the system will be brought to fan LL operation The fan LL operation is also enabled while in oil return mode in cooling operation 9 The airflow The airflow direction is not Automatic control Normal operation direction is not corresponding to that reproduced displayed on the remote according to the controller setting The flap does not swing 10 A white mist lt Indoor unit gt Uneven temperature distribution Clean the inside of the indoor comes out from In cooling operation the due to heavy stain of the inside of unit the system the indoor unit ambient humidity is high This indoor unit is installed in a place with much oil or dust lt Indoor unit gt Immediately after cooling operation stopping the ambient temperature and humidity are low Hot gas refrigerant flown in the indoor unit results to be vapor from the unit Normal operation lt Indoor and outdoor units gt After the completion of defrosting operation the system is switched to heating operation Defrosted
228. pressor port temperature calculated by Tc and Te and suction superheated degree eHTds gt 120 C continues for 5 min or more ai eHTds gt 135 C eTp gt 135 Ccontinues for 10 min or more eTp gt 145 C gt Discharge pipe temp Applicable STD protection control not limited compressor stops After 10 min 2 34 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept ERX100 140A8V3B INV compressor Discharge pipe protection control not limited A A ES gt 115 C or Tp gt 135 C n be lt 100 C INV upper limit frequency Tp lt 110 C S 1 step down from currentcompressor frequency After 30 sec HTdi Value of INV compressor discharge pipetemperature Tdi compensated withoutdoor air temperature Tp Value of compressor port temperaturecalculated by Tc and Te and suction superheated degree Es gt 115 C Tp gt 135 C g Hrai lt t10 C Tp lt 125 C HTdi gt 130 C In discharge pipe P INV upper limit frequency 1 step up or HTdi gt 120 C _temp protection control g from current compressor frequency for 90 sec After 20 sec or more A 36 Hz Unload o HT gt 135 C HTdi gt 120 C for 10 min or more When occurring 3 times within 100 minutes the temperature standby malfunction code F3 is output Discharge pipe Part 2 Functional Description 2 35 Outdoor Un
229. r Normal operation compressor or refrigerant from dwelling It stops after a lapse of Sono cure approximately 5 to 10 minutes fan does not PP y i stop 3 6 Part 3 Troubleshooting ESIE07 08 Troubleshooting Symptom Supposed Cause Countermeasure 17 The outdoor gets While stopping operation The reason is that the Normal operation hot compressor is warmed up to provide smooth startup of the system 18 Hot air comes Hot air is felt while the system On VRV systems small quantity Normal operation out from the system even though it stops stops of refrigerant is fed to indoor units in the stopped state when other indoor units are in operation 19 The system does not cool air well The system is in dry operation The reason is that the dry operation serves not to reduce the room temperature where possible Change the system to cooling operation Part 3 Troubleshooting 3 7 Troubleshooting ESIE07 08 1 3 Troubleshooting by Remote Controller The inspection test The following modes can be selected by using the Inspection Test Operation button on the button remote control Depress Inspection Test Operation x button for more than 4 seconds E Control box settings can be made Service data can be obtained Filter sign time ate Malfunciton code history Air flow direction Local Service Temperature data of various sections setting
230. r ERX125A7W1B 2 39 2 11 Emergency Operation 2 40 2 12 Thermostat Sensor in Remote Controller 2 42 2 13 Electronic Expansion Valve Control 2 44 2 14 Low Outdoor Air Temperature Protection Control 2 45 Part 2 Functional Description 2 13 Outdoor Unit Functional Concept ESIE07 08 2 2 Operation Mode Flow chart Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction Standby Retry Y Restart standby Ma ressure gt Compressor sto equalization p p prior to startup Malfunction Standby Retry Y Indoor unit stop or 5 thermostat OFF 5 gt Operation mode Startup control Pump cow changeover e Cooling startup control residual lt Indoor unit thermostat ON operation After completion of startup control A Malfunction After completion of Standby Retry Indoor unit stop or startup control thermostat off After completion of oil return Indoor unit stop or Normal operation thermostat OFF N e Compressor PI control e Motorized valve PI control E e Protection control gt Cooling Y DP in operation Malfunction Standby Retry Oil return IN conditions are met Oil return operation After completion of oil return S A Remark In the event indoor unit stops or the thermostat
231. r an open circuit in the discharge pipe temperature thermistor is detected decision conditions Supposed causes Defect of thermistor R31T or R32T R2T for outdoor unit discharge pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Confirm which discharge thermistor is abnormal using outdoor unit monitoring mode 1 Connector is connected to X29A X12A 2 of outdoor unit PC board A1P N e gt Connect the connector and turn on again Resistance is normal when measured after disconnecting NO the thermistor R2T R3T R32T gt Replace the thermistor R31 32T from the outdoor unit PC R2T board xkQ ykQ 3 WES NS Replace outdoor unit PC board A1P The alarm indicator is displayed when the fan is being used also Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 Note 1 Refer to page 3 16 and page 3 21 2 Connector X29A for ERX125 250A7W1B connector X12A for ERX100 140A8V3B 3 2 5kKQ 1 3kQ for ERX125 250A7W 1B 5 0kQ 640kQ for ERX100 140A8V3B 3 64 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Note ERX125 200A7W1B class R3T ERX250A7W1B class R31T R32T ERX100 140A8V3B class R2T Part 3 Troubleshooting 3 6
232. radiation fin temperature L4 rising DC output over current Inverter instantaneous over current L5 IGBT malfunction L5 lt Confirmation of malfunction 4 gt Electronic thermal Electronic thermal switch 1 L8 Push the SET BS2 button once to Electronic thermal switch 2 display master or slave 1 or slave 2 Out of step and malfunction location Speed down after startup Lightening detection Stall prevention Limit time Stall prevention Current increasing L9 Stall prevention Faulty start up Abnormal wave form in startup Out of step Transmission error between Inverter transmission error LC switches to the initial status of Monitor mode Push the RETURN BS3 button and Push the MODE BS1 button and returns to Setting mode 1 inverter and outdoor unit Part 3 Troubleshooting Troubleshooting ESIE07 08 3 Blink 4 ON OFF Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction Confirmation of malfunction dZH d9H dSH S dvH o o e o EG o 8 o e ee o o o EG o e Cs deH dZH diH dZH d9H dSH ee ojo J e e o x e o ojo e e o x e o ojo
233. rd compressor lock or over current 3 48 E7 3 Cs 3 Malfunction of outdoor unit fan motor 3 50 E9 Cs Cs Malfunction of moving part of electronic 3 54 expansion valve Y1E Y2E F3 y Cs Cs Abnormal discharge pipe temperature 3 56 F6 ces Cs Refrigerant overcharged 3 59 E H3 xX o 3 Failure of high pressure switch H4 y 3 Cs Actuation of low pressure switch 8 H7 ces ces Abnormal outdoor fan motor signal 3 60 8 H9 ces Cs Malfunction of thermistor R1T for outdoor air 3 62 loose connection disconnection short circuit failure J2 3 Cs 3 Current sensor malfunction J3 3 Cs 3 Malfunction of discharge pipe thermistor 3 64 R31 32T loose connection disconnection short circuit failure J5 3 Cs 3 Malfunction of thermistor R3T R5T for suction 3 66 pipe loose connection disconnection short circuit failure J6 y Cs Cs Malfunction of thermistor R4T for heat 3 67 exchanger loose connection disconnection short circuit failure J7 Cg i 3 Malfunction of receiver outlet liquid pipe 3 68 thermistor R7T 3 14 Part 3 Troubleshooting ESIE07 08 Troubleshooting 3 Blink 3 ON OFF Malfunction Operation Inspection Unit No Malfunction contents Page code lamp display Referred J9 ECS ECS Malfunction of subcooling heat exchanger gas 3 69 pipe thermistor R5T JA E Cs Cs Malfunction of d
234. rent flowing in the power transistor When overload in the compressor is detected during startup Defect of compressor Pressure differential start Defect of outdoor unit PC board A1P The difference between high and low pressure when NO starting is above 0 2MPa YES Disconnect the connection between the compressor and inverter Make the power transistor check mode ON by service mode Inverter output voltage check Inverter output voltage is not balanced Normal No gt Unsatisfactory pressure equalization Check refrigerant system if within 5V Must be measured when frequency is stable After turning on again L9 No gt Replace outdoor unit PC board A1P gt Reset and restart blinks again YES gt Compressor inspection Inspect according to the diagnosis procedure for odd noises vibration and operating status of the compressor Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 85 Error Codes Outdoor Units ESIE07 08 3 28 LC Outdoor Unit Malfunction of Transmission Between Inverter and Control PC Board ERX125 250A7W1B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes r ra ERX125 250A7W1B Check the communication state be
235. ressor Fan driver PC board Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 95 Error Codes Outdoor Units ESIE07 08 3 96 Part 3 Troubleshooting ESIE07 08 Error Codes System Malfunctions 4 Error Codes System Malfunctions 4 1 What Is in This Chapter Introduction In the first stage of the troubleshooting sequence it is important to correctly interpret the error code on the remote controller display The error code helps you to find the cause of the problem Overview This chapter contains the following topics Topic See page 4 2 U0 Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Elec 3 98 tronic Expansion Valve Failure ERX125 250A7W1B 4 3 U0 Outdoor Unit Low Pressure Drop Due to Refrigerant Shortage or Elec 3 100 tronic Expansion Valve Failure ERX100 140A8V3B 4 4 U1 Reverse Phase Open Phase ERX125 250A7W1B 3 103 4 5 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 3 104 ERX125 250A7W1B 4 6 U2 Power Supply Insufficient or Instantaneous Failure ERX100 140A8V3B 3 104 4 7 U3 Outdoor Unit Check Operation not Executed 3 109 4 8 U4 Malfunction of Transmission between Indoor Units 3 110 4 9 U5 Indoor Unit Malfunction of Transmission between Remote Controller and 3 112 Indo
236. ressure Switch 3 40 3 4 E4 Outdoor Unit Actuation of Low Pressure Sensor 3 43 3 5 E5 Outdoor Unit Inverter Compressor Motor Lock 345 3 6 E6 Outdoor Unit STD Compressor Motor Overcurrent Lock 3 48 ERX125 250A7W1B 3 7 E7 Outdoor Unit Malfunction of Outdoor Unit Fan Motor 3 50 3 8 E9 Outdoor Unit Malfunction of Moving Part of Electronic Expansion Valve 3 54 Y1E Y2E for ERX125 250A7W1B Y1E Y3E for ERX100 140A8V3B 3 9 F3 Outdoor Unit Abnormal Discharge Pipe Temperature 3 56 3 10 F6 Outdoor Unit Refrigerant Overcharged ERX125 250A7W1B 3 57 3 11 F6 Outdoor Unit Refrigerant Overcharged ERX100 140A8V3B 3 59 3 12 H7 Outdoor Unit Abnormal Outdoor Fan Motor Signal 3 60 3 13 H9 Outdoor Unit Malfunction of Thermistor R1T for Outdoor Air 3 62 3 14 J2 Outdoor Unit Current Sensor Malfunction 3 63 3 15 J3 Outdoor Unit Malfunction of Discharge Pipe Thermistor R3T R31 32T 3 64 for ERX125 250A7W1B R2T for ERX100 140A8V3B 3 16 J5 Outdoor Unit Malfunction of Thermistor or Suction Pipe 3 66 R2T for ERX125 250A7W1B R3T RST for ERX100 140A8V3B 3 17 J6 Outdoor Unit Malfunction of Thermistor R4T for Outdoor Unit Heat 3 67 Exchanger 3 18 J7 Outdoor Unit Malfunction of Liquid Pipe Thermistor 3 68 RST ERX125A7W1B R6T ERX200 250A7W1B R7T ERX100 140A8V3B 3 19
237. ressure protection control includes low pressure protection control and hot gas bypass control For details see page 2 32 3 In cooling the indoor unit electronic expansion valve is used for superheated degree control on page 2 44 Part 3 Troubleshooting 3 123 Additional Checks for Troubleshooting ESIE07 08 5 6 Check No 5 Check for Fan Motor Connector Only ERX100 140A8V3B 1 Turn the power supply off 2 With the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table 1 White O Measurement point Judgment 2 Orange O 1 4 1MQ or more 2 4 100kQ or more 2 Brown O H 3 4 1009 or more GND 4 Blue O 4 7 100kQ or more 5 O 6 O 7 Red O 3 124 Part 3 Troubleshooting ESIE07 08 Part 4 Commissioning and Test Run What is in this part This part contains the following chapters Chapter See page 1 Field settings 4 3 2 Test Operation 4 15 Part 4 Commissioning and Test Run 4 1 ESIE07 08 Part 4 Commissioning and Test Run ESIE07 08 Field settings 1 Field settings 1 1 What Is in This Chapter Introduction This chapter contains the following information How to change the field settings The field settings The factory settings Overview This chapter c
238. rmal elles Remove the causes by which the high pressure has become high See also Check No 3 on page 3 122 Notes 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information page 2 6 2 Make a comparison between the high pressure value checked with the Service Checker and the voltage of the pressure sensor see 1 3 Make measurement of voltage of the pressure sensor Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 341 Error Codes Outdoor Units ESIE07 08 Graph pad Connector for high pressure sensor Red 4 Red mies 3 Black High pressure 2 sensor Micro controller A D input 1 White Make measurement of DC voltage between these wires 3 42 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 4 EX Outdoor Unit Actuation of Low Pressure Sensor Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes mi ERX125 250A7W1B ERX100 140A8V3B Abnormality is detected by the pressure value with the low pressure sensor Error is generated when the low pre
239. rred Part 3 Troubleshooting 3 67 Error Codes Outdoor Units ESIE07 08 3 18 JT Outdoor Unit Malfunction of Liquid Pipe Thermistor R5T ERX125A7W1B R6T ERX200 250A7W1B R7T ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Note Caution A ERX125 250A7W1B ERX100 140A8V3B Malfunction is detected according to the temperature detected by liquid pipe thermistor When the liquid pipe thermistor is short circuited or open Faulty liquid pipe thermistor RST R6T R7T Faulty outdoor unit PC board Defect of thermistor connection Is the connector for liquid pipe thermistor connected to X30A X13A 1 on outdoor unit PC board A1P NO gt Connect connector and operate unit again ls the resistance measured after removing the thermistor R5T R6T R7T from outdoor unit PC board normal xkQ to ykQ 2 NO gt Replace thermistor R5T R6T R7T gt Replace outdoor unit PC board A1P Refer to Thermistor Resistance Temperature Characteristics table on page 2 4 1 Connector X30A for ERX125 250A7W1B connector X13A for ERX100 140A8V3B 2 1 8k0 800k02 for ERX125 250A7W1B 3 5kQ 360kQ for ERX100 140A8V3B Be sure to turn off power switch before connect or disconnect connector or parts damage may be
240. s refrigerant from outflow Differences Pressure proof hose Change in service port diameter Use of nylon coated material for HFC resistance XV Introduction ESIE07 08 Charging cylinder Weigher for refrigerant charge Charge mouthpiece Can not be used N e Specifications Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder Differences The cylinder can not be used for mixed refrigerant since mixing ratio is changed during charging When R410A is charged in liquid state using charging cylinder foaming phenomenon is generated inside charging cylinder Specifications High accuracy TA101A for 10 kg cylinder 2g TA101B for 20 kg cylinder 5g Equipped with pressure resistant sight glass to check liquid refrigerant charging A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences Measurement is based on weight to prevent change of mixing ratio during charging Specifications For R410A 1 4 gt 5 16 2min gt 2 5min Material is changed from CR to H NBR Differences Change of thread specification on hose connection side For the R410A use Change of sealer material for the HFCs use xvi
241. s several times This means that you have to wait until the system shuts down to be able to see the flashing LED on the front panel and the error code on the remote controller Overview This chapter contains the following topics Topic See page 2 2 A0 Indoor Unit Error of External Protection Device 3 26 2 3 A1 Indoor Unit PC Board Defect 3 27 2 4 A9 Indoor Unit Malfunction of Moving Part of Electronic Expansion Valve 3 28 Y1E 2 5 AJ Indoor Unit Malfunction of Capacity Determination Device 3 30 2 6 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 3 31 2 7 C5 Indoor unit Malfunction of Thermistor R3T for Gas Pipes 3 32 2 8 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 3 33 2 9 CA Indoor Unit Malfunction of Thermistor for Discharge Air 3 34 2 10 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 3 35 Part 3 Troubleshooting 3 25 Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 2 2 AO Indoor Unit Error of External Protection Device Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A o ca All indoor unit models Detect open or short circuit between external input terminals in indoor unit When an open circuit occurs between
242. see wiring diagram Install a circuit breaker for safety All field wiring and components must be provided by a licensed electrician Unit shall be grounded in compliance with the applicable local and national codes Wiring shown are general points of connection guides only and are not intended for or to include all details for a specific installation Be sure to install the switch and the fuse to the power line of each equipment Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources 10 For detailed control box side connection see control box manual and wiring diagram 11 For detailed pipe connections and limitations see manuals HH Wiring Refrigerant piping Part 1 System Outline 1 73 ESIE07 08 HI TIOHLNO9 3 L0N38 Ca HITIOULNO9 SALOWSY Lo po LINN HOOONI HITIOHLNO9 2LONAH Lo po LINN HOOONI XOd TOHLNOO E EJ woz Xvw weg QHWONVLS 1 KE SINN HOLSINHSHL Ni AT
243. shooting ESIE07 08 Error Codes Outdoor Units Troubleshooting Imbalance in supplied voltage is in excess of 14 V Y1 1 Open phase ES Open phase Normalize field cause gt Fix power supply voltage imbalance Part or wiring defect After turning the power supply OFF check and repair the main circuit wiring or parts 1 Loose or disconnected wiring between power NO A i supply and inverter lt When voltage monitoring is possible gt 2 K2 contact disposition fusion or contact is poor 3 Loose or disconnected Is the voltage imbalance applied to the inverter in excess of 14 V Y1 2 Using a device capable of constant recording of power noise filter supply voltage record power f supply voltage between 3 1 Measure voltage at the X1M power supply terminal phases L1 L2 L2 L3 block L3 L1 for about one 2 Measure voltage at terminals L1 L2 and L3 of the continuous week diode module inside the inverter while the compressor is running No abnormalities are y 5 observed in the power Power supply voltage imbalance supply but the imbalance in voltage recurs measure v gt Replace the inverter PC board Explanation for users In accordance with notification of inspection results accompanying spare parts Give the user a copy of notification of inspection results and leave it up Be
244. side or near the symbol After the repair work is complete be sure to conduct a test operation to ensure that the equipment operates normally and explain the cautions for operating the product to the customer 1 2 1 Caution in Repair Warning Warning Be sure to disconnect the power cable plug from the plug socket before disas sembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the dis charging refrigerant gas The refrigerant gas can cause frostbite When disconnecting the suction or discharge pipe of the compressor at the welded section release the refrigerant gas completely at a well ventilated place first If there is a gas remaining inside the compressor the refrigerant gas or refrig erating machine oil discharges when the pipe is disconnected and it can cause injury If the refrigerant gas leaks during the repair work ventilate the area The refrigerant gas can generate toxic gases when it contacts flames ESIE07 08 Introduction Caution Warning The step up capacitor supplies high voltage electricity to the electrical compo nents of the outdoor unit
245. ss and hold the MODE button BS1 for a period of 5 seconds or more 0000000 Press the SET button BS2 42 times 0060600 Factory set Press the RETURN button BS3 once 0000009 0000000 Press the SET button BS2 once 0000000 Press the RETURN button BS3 twice 0000000 Press the MODE button BS1 once 2 40 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept Note oOo a fF WwW ND In order to set STD1 and STD2 compressors to operation prohibition mode set No 19 of Setting mode 2 to STD1 2 OPERATION PROHIBITION ERX250A7W1 Press and hold the MODE button BS1 for a period of 5 seconds or more Press the SET button BS2 19 times Press the RETURN button BS3 once Press the SET button BS2 once Press the RETURN button BS3 twice Press the MODE button BS1 once LED display O ON OFF 0 Blink H1P H7P 0000000 0000000 0000000 Factory set 0000000 0000000 0000000 For the system with a single outdoor unit automatic backup operation is not functional In order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state Part 2 Functional Description 2 41 Outdoor Unit Functional Concept ESIE07 08 2 12 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction General thermostat in t
246. ssure equivalent saturation temperature C Subcooling For ERX100 140A8V3B only electronic expansion valve Makes PI control of the electronic expansion valve Y3E to keep the superheated degree SH of the EV3 control outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger SH Tsh Te SH Outlet superheated degree of evaporator C Tsh Suction pipe temperature detected with the thermistor R6T C Te Low pressure equivalent saturation temperature C 2 20 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept 2 3 5 Outdoor Unit Fan Control in Cooling Operation While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Upper limit of fan revolutions Step 8 Pc lt 2 75MPa Pc gt 3 24MPa Upper limit of outdoor unit fan revolutions Step 7 PI control v Lapse of 20 sec 1 step on outdoor P Hold the current Plcontrol ig step on outdoor unit fan step on outdoor unit fan unit fan A PI control Lapse of 20 sec Furthermore when outdoor temperature gt 20 C the compressor will run in Step 7 or higher When outdoor temperature gt 18 C it will run in Step 5 or higher
247. ssure is dropped under specific pressure Operating pressure 0 07MPa Abnormal drop of low pressure Lower than 0 07MPa Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened Part 3 Troubleshooting 3 43 Error Codes Outdoor Units ESIE07 08 Troubleshooting Is the stop valve open Open the stop valve 1 Mount a pressure gauge on the low pressure service port 2 Connect the Service Checker 3 Reset the operation using the remote controller and then restart the operation characteristics of the low pressure sensor normal See 1 NO Replace the low pressure sensor Is the pressure detected with the PCB normal See 2 Replace the main PCB The low pressure sensor is normal and the pressure detected with the PCB is also normal The low pressure has really become low Ale Remove the causes by which the low pressure has become low See also Check No 4 on page 3 123 Notes 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information page 2 6 2 Make a comparison between the low pressure value checked with the Service Checker and the voltage of the pressure sensor see 1 3 Make measurement of voltage
248. ssure prior to startup AREAS 0 2MPa equalization Check the refrigerant system YES Does the NO Power ON malfunction L8 recur gt End of measures It can take a maximum of 60 minutes Check the refrigerant to determine the malfunction system YES gt Check of compressor Check the compressor for abnormal sounds vibration operating conditions and others according to the Compressor Diagnosis Procedure Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 81 Error Codes Outdoor Units ESIE07 08 Troubleshooting ERX100 140A8V3B The secondary current of YES the inverter is higher than 24 9A gt Compressor overload 260 sec for each Inspection of the compressor and phase refrigerant system is required NO Compressor YES inspection The compressor s coil gt Replace the compressor is disconnected NO Disconnect the the connection between the compressor and inverter Make the power transistor check mode setting ON by service mode Inverter output voltage check Inverter output voltageis not balanced NO f Normal if within 5V Must be gt Replace outdoor unit PC board measured when A1P frequency is stable YES After NO turning on again L8 blinks gt Reset and restart again YES Compressor inspection Inspect according to the diagnosis procedure for odd noises vibr
249. sure to explain to the user that to him to improve the imbalance there is a power supply imbalance of which DAIKIN is not responsible Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 91 Error Codes Outdoor Units ESIE07 08 3 31 PY Outdoor Unit High Voltage of Capacitor in Main Inverter Circuit ERX100 140A8V3B Error code Applicable models Method of malfunction detection Malfunction decision conditions Supposed causes Troubleshooting Caution A a ERX100 140A8V3B Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase Defect of main circuit capacitor Improper main circuit wiring Defect of outdoor unit PC board A1P Check for the connection of the main circuit capacitor C4 Is the C4 properly connected If not connected connect the C4 gt Replace the outdoor unit PC board A1P Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 92 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 32 PH Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise Sensor
250. switch and the fuse to the power line of each equipment Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple power sources 10 For detailed control box side connection see control box manual and wiring diagram 11 For detailed pipe connections and limitations see manuals 12 Connection appliance can be standard indoor unit or free choice of air handling unit F Wiring Refrigerant piping Part 1 System Outline 1 75 Wiring Diagrams Outdoor Units ESIE07 08 1 76 Part 1 System Outline ESIE07 08 PCB Layout 6 PCB Layout 6 1 What Is in This Chapter Introduction This chapter contains the following information It describes which unit uses which PCB types It shows the PCB connectors Outdoor units This chapter contains the following PCB layouts Topic See page 6 2 PCB Layout for ERX125 250A7W1B 1 78 6 3 PCB Layout for ERX100 140A8V3B 1 84 6 4 PCB Layout for EKEXDCB A V3B EKEXFCB A V3B and EKEXMCBV3B 1 88 6 5 Outdoor Unit PC Board for ERX125 250A7W1B 1 92 6 6 Outdoor Unit PC Board for ERX100 140A8V3B 1 93 Part 1 System Outline 1 77 PCB Layout ESIE07 08 6 2 PCB Layout for ERX125 250A7W1B Main PCB A1P The illustration below shows the PCB connectors X5A X4A X3A 3 X29A X2A X7A X30A X8A gt X18A X31A X11A 3 X32A X12
251. t generation or fire Introduction ESIE07 08 Caution Caution Check to see if the parts and wires are mounted and connected properly and if the connections at the soldered or crimped terminals are secure Improper installation and connections can cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation platform or frame can cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding can cause an electrical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor vi ESIE07 08 Introduction 1 3 1 3 1 Outline Precautions on Handling New Refrigerant R410A About Refrigerant R410A 1 Performance Characteristics of new refrigerant R410A Almost the same performance as R22 and R407C 2 Pressure Working pressure is approx 1 4 times more than R22 and R407C 3 Refrigerant composition Few problems in composition control since it is a Quasi azeotropic mixture refrigerant HFC units Units using
252. t xe PC board defect E2 PROM defect 3 39 E3 e ccs Actuation of high pressure switch 3 40 E4 3 3 3 Actuation of low pressure switch 3 43 E5 5s ces Compressor motor lock 3 45 E6 3 3 3 Standard compressor lock or over current 3 48 E7 e Cs Malfunction of outdoor unit fan motor 3 50 E9 3 xy 3 Malfunction of moving part of electronic expansion 3 54 valve Y1E 3E F3 Cs 3 Cs Abnormal discharge pipe temperature 3 56 F6 e ces Refrigerant overcharged 3 57 H7 Cs 3 Cs Abnormal outdoor fan motor signal 3 60 H9 ces Cs Malfunction of thermistor R1T for outdoor air loose 3 62 gt connection disconnection short circuit failure 3 J2 it y Cs Current sensor malfunction 3 63 5 J3 Cs 3 Cs Malfunction of discharge pipe thermistor R3T 3 64 O loose connection disconnection short circuit failure J5 ces ces Malfunction of thermistor R2T for suction pipe 3 66 loose connection disconnection short circuit failure J6 Cs E Cs Malfunction of thermistor R4T for heat exchanger 3 67 loose connection disconnection short circuit failure J7 3 3 3 Malfunction of header thermistor 3 68 J9 Cs 3 Cs Malfunction of receiver gas pipe thermistor R5T 3 69 JA 3 E 3 Malfunction of discharge pipe pressure sensor 3 70 JC Cs 3 Cs Malfunction of suction pipe pressure sensor 3 72 LO Cs 3 Cs Inverter system error 3 12 Part 3 Troubleshooting ESIE07 08 Troubleshooting 3 Blink 4 ON OFF
253. tegrated manner because this system consists of the equipment utilizing the multiple power sources If there exists the possibility of reversed phase lose phase momentary blackout or the power goes on and off while the product is operating attach a reversed phase protection circuit locally For detailed control box side connection see control box manual and wiring diagram Part 1 System Outline 1 67 Wiring Diagrams Outdoor Units ESIE07 08 5 9 Field Wiring for ERX100 140A8V3B Field wiring The illustration below shows the wiring diagram of the unit POWER SUPPLY L OUTDOOR UNIT MAINSWITCH L SWITCH A FUSE TRANSMISSION LINE ER L SWITCH A FUSE POWER LINE CONTROL BOX 3TW27176 2 1 68 Part 1 System Outline ESIE07 08 Wiring Diagrams Outdoor Units Notes NO A fF WwW ND oo All wiring components and materials to be procured on the site must comply with the applicable local and national codes Use copper conductors only As for details see wiring diagram Install circuit breaker for safety All field wiring and components must be provided by licensed electrician Unit shall be grounded in compliance with the applicable local and national co
254. that have the power off unit the operation cannot finish properly To energize the crankcase heater make sure to turn on for 6 hours before starting operation STEP 4 Start the additional refrigerant charge operation About the system settings for additional refrigerant charge operation refer to the Service Precaution label attached on the EL COMPO BOX lid in the outdoor unit Open valve A immediately after starting the compressor STEP 5 Close the valve A if the additional charging amount of refrigerant was charged and push the RETURN button BS3 once STEP 6 Record the charging amount on the accessory REQUEST FOR THE INDICATION label and attach it to the back side of the front panel 4 26 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 5 After completing the additional refrigerant charging perform the check operation following below Note For check operation the following work will be performed Check of shutoff valve opening Check of miswiring Judgment of piping length Check of refrigerant overcharge It takes about 40 minutes to complete the check operation Check Operation Procedure STEP 1 Make the onsite setting as needed using the dip switches on the outdoor unit PC board A1P with the power off See 1 2 5 1 Onsite Settings With the Power Off STEP 2 Close the EL COMPO BOX lid and all front panels except as the side of the EL COMPO BOX and turn on
255. there are no danger to operate 2 5 2 Test Run ERX125 250A7W1B General After check operation is completed operate the unit normally and check the following 1 Make sure the indoor and outdoor units are operating normally 2 Check to see if cold air is coming out from the indoor unit Note If a knocking sound can be heard in the liquid compression of the compressor stop the unit immediately and then energize the crank case heater for a sufficient length of time before restarting the operation Once stopping the compressor will not restart in about 5 minutes even if the T1 T2 contact is closed When the system operation is stopped the outdoor units may continue operating for further 5 minutes at maximum 4 30 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 5 3 Checks after Test Run ERX125 250A7W1B Perform the Record the contents of field setting following checks Record them on the accessory REQUEST FOR THE INDICATION label after the test run is And attach the label on the back side of the front panel complete Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the IEC60335 2 40 And attach the label on the back side of the front panel Note After the test run when handing the unit over to the customer make sure the EL COMPO BOX lid the inspection door and the unit casing are all
256. ting from Outdoor Unit eenen eneen 4 6 Setting of Refrigerant Recovery Mode 4 11 Setting of VACUUMING Mode nanasan ennen ennen eenseenaneennsennen 4 12 Check Operation Detail ERX125 250A7W1B nnen 4 13 Check Operation Detail ERX100 140A8V3B oocioociccociciconiccicooninionaancconnans 4 14 What Is in This Chapter nnn nennen ennnenenvennenen ee conan nn ncnnccnnnn cnn 4 15 Installation Process ERX125 250A7W1B nnee enen 4 16 Procedure and Outline ERX125 250A7W1B secsec 4 17 Onsite Settings with the Power On ERX125 250A7W1B 4 29 Test Run ERX125 250A7W1B nnn eneen versen nana narran 4 30 Operation when Power is Turned On ERX125 250A7W1B 4 32 Procedure and Outline ERX100 140A8V3B nne 4 34 Operation when Power is Turned On ERX100 140A8V3B 4 39 vi Table of Contents ESIE07 08 Introduction 1 Introduction 1 1 About This Manual Target group Purpose of this manual Five parts Introduction overview This service manual is intended for and should only be used by qualified engineers This service manual contains all the information you need to do the necessary repair and maintenance tasks for the Daikin Inverter Condensing Unit and option kits in pair application with a non Daikin airhandling unit This service manual consists of an introduction five parts and an index
257. tional parts layout General outline This chapter contains the following general outlines Topic See page 1 2 ERX125A7W18B Outlook Dimensions and Components 1 4 1 3 ERX200 250A7W18B Outlook Dimensions and Components 1 5 1 4 ERX100 140A8V3B Outlook Dimensions and Components 1 6 1 5 ERKEXV50 250 Functional Parts Layout 1 8 1 6 ERX125A7W18B Functional Parts Layout 1 10 1 7 ERX200A7W18B Functional Parts Layout 1 12 1 8 ERX250A7W18B Functional Parts Layout 1 14 1 9 ERX100 140A8V3B Functional Parts Layout 1 16 1 10 ERX125 250A7W18B Installation and Service Space 1 17 1 11 ERX100 140A8V3B Installation and Service Space 1 21 Part 1 System Outline 1 3 General Outline Outdoor Units ESIE07 08 1 2 ERX125A7W1B Outlook Dimensions and Components Outlook and The illustration below shows the outlook and the dimensions of the unit mm dimensions a 4 1 5x22
258. toff valve shutoff valve service port EAT Valve B oo y L gt Valve C Valve A i Field pipings R 410A cylinder with siphon gt Refrigerant flow Measuring device 4 Perform the refrigerant charging operation following Refrigerant charging operation procedure as shown on page 4 26 and charge the remaining refrigerant of the additional charging amount For performing the refrigerant charging operation the push button on the PC board A1P of outdoor unit are used In addition the refrigerant are charged from the refrigerant charge port via the valve A See figure below For operating the push button and opening and closing the valve follow the work procedure Note The refrigerant will be charged about 22kg in one hour at outdoor temp 30 C DB 6kg at 0 C DB If you need to speedup in case of multi system connect the refrigerant cylinders to each outdoor unit as shown in the figure below Lift the protruding EL COMPO BOX lid part to open the cover LED H1 8P es Push button eA A BS1 5 Laca a mee Inspection door EL COMPO BOX lid XX Part 4 Commissioning and Test Run 4 25 Test Operation ESIE07 08 Refrigerant charge port Liquid side shutoff valve Charge hose Gas side shutoff valve Shutoff valve Outdoor service port unit valve B Measuri
259. tory No can be changed with the acid code un button 2 U4 5 Malfunction code Hystory No 1 9 weoor 11 Latest y Display of sensor Display various types of data Select the data to be displayed with the button Sensor data 0 Thermostat sensor in remote controller 1 Suction pe ui 2 Liquid pipe 3 Gas pipe Temperature C Sensor data display Unit No Sensor type 11 Part 3 Troubleshooting Troubleshooting ESIE07 08 1 7 Overview of Error Codes ERX125 250A7W1B 3 Blink 3 ON OFF Malfunction Operation Inspection Unit No Malfunction contents See code lamp display page AO Cs 3 E Error of external protection device 3 26 A1 it i a PC board defect E2 PROM defect 3 27 A9 3 xy 3 Malfunction of moving part of electronic expansion 3 28 valve 20E AJ Malfunction of capacity settin 3 30 3 ES 3 pacity g C4 3 E Cs Malfunction of thermistor R2T for heat exchange 3 31 8 loose connection disconnection short circuit 3 failure a C5 Cs 3 Cs Malfunction of thermistor R3T for gas pipes loose 3 32 connection disconnection short circuit failure C9 ECS Cs Malfunction of thermistor R1T for air inlet loose 3 33 connection disconnection short circuit failure CJ it EE ke Malfunction of thermostat sensor in remote controller 3 35 El it i
260. trol General ERX125 250A7W1B This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature following sequence 1 INV compressor Normal operation A HTdi gt 115 C Tp gt 135 C INV upper limit frequency Tp lt 110 C j beren Each compressor performs the discharge pipe temperature protection control individually in the HTdi Value of INV compressor discharge pipe temperature Tdi compensated with outdoor air temperature Tp Value of compressor port temperature P 1 step down from current calculated by Tc and Te and suction COmMpIESSOr IPS superheated degree ai After 30 sec Eee 15 C Tp gt 135 C HTdi lt 110 C Tp lt 125 C HTdi gt 130 C Jn discharge pipe temp P INV upper limit frequency 1 step up HTdi gt 120 C Protection control_ from current compressor frequency or for 90 sec After 20 sec or more Tp gt 130 C ERX125A7W1B 52 Hz at HTdi gt 135 C P Other models HTdi gt 120 C for 10 min or more INV62 Hz OFF OFF Discharge pipe When occurring 3 times within 100 minutes temperature standby the malfunction code F3 is output for a period of 10 minutes 2 STD compressor temperature Tds compensated with outdoor air temperature Tp Value of com
261. ts ESIE07 08 Troubleshooting ERX125 250A7W1B Check for the fan motor connector Power supply cable Resistance of the U V and W phases of the fan motor has got YES imbalanced or short circuits have been established among the U V and W phases Check 2 Check for the fan motor connector Signal cable Has a short circuit been established between the fan motor signal cables Vcc and GND and UVW and GND respectively YES Turn ON the power supply The LED HAP on the compressor inverter PCB is blinking but the LED HAP on iE gt Replace the outdoor unit fan motor Replace the outdoor unit fan motor the fan inverter PCB is not blinking NO gt Replace the fan inverter PCB gt Replace the outdoor unit fan motor See also Check No 1 on page 3 120 and Check No 2 on page 3 121 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 3 52 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting ERX100 140A8V3B Caution A Connector of fan motor is NO Is there any obstacle around the fan Can the fan be turned smoothly connector of fan motor YES YES gt Connect the connector gt Remove the obstacle NO gt Replace the fan motor of
262. ts Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections can cause excessive heat generation or fire When connecting the cable between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable If the cover is not mounted properly the terminal connection section can cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable can cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable can damage the cable Do nat mix air or gas other than the specified refrigerant R 410A in the refrig erant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leak and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leak cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges
263. tsensorPCB The illustration below shows the PCB connectors for ERX250A7W1B A6P magnetic contactor only for ERX250A7W1B Current sensor PCB connector X1A connecter to X26A A1P Part 1 System Outline 1 83 PCB Layout ESIE07 08 6 3 PCB Layout for ERX100 140A8V3B Control PCB X106A X107A X111A X37A X102A X41A X18A X17A X32A X25A X27A X26A X28A 1 84 Part 1 System Outline ESIE07 08 PCB Layout Connectors The table below describes the PCB connectors Connector Connected to Description X5A X205A Service PCB X11A R1T Thermistor air X12A R2T Thermistor discharge R3T Thermistor suction 1 R4T Thermistor heat exchanger R5T Thermistor suction 2 X13A R6T Thermistor subcooling heat exchanger R7T Thermistor liquid pipe X17A S1NPH Pressure sensor high X18A S1NPL Pressure sensor low X21A Y1E Electronic expansion valve main X22A Y3E Electronic expansion valve subcool X25A Y1S Solenoid valve 4 way valve X26A Y2S Solenoid valve hot gas X27A Y3S Solenoid valve U L circuit X28A E1HC Crankcase heater X32A S1PH Pressure switch high X41A Connection for rom monitor X81A X2M Terminal strip control UVW M1C Motor compressor X106A M1F Motor fan upper X107A M2F Motor fan lower X111A FINTH Thermistor fin Part 1 System Outline 1 85 PCB Layout ESIE07 0
264. turn Operation sra et tt a Waa OES 2 25 Pump down Residual Operation ooooocccccco eee 2 27 Standby iaa di Re at hd aot 2 28 Startup COMMON foe Anes dd a Mae ee hen An se eae 2 24 stopping Operator a ek ce teed dee NR te 2 29 Specifications EKEXFGB AJVIB 2 tors ande ed eee eee aden dado madri bbs ia dende 1 34 EKEXMCBV3B cuts cack Hie serene ale at rate weder benee a nee 1 34 IARAA O E E E EEE eN 1 36 ERX100 T40A8BVBB ci A A ee eee oy 1 31 ERX125 lt 290A7WAB Loa ete aanb etten a 1 28 Switch Box Layout EKEXDCEB AJIVBB cui AA ete dd Dead dene 1 51 EKEXFCB AIVIB oi a EN ee ARE AB td A 1 52 ERX100 140A8BVIB 55 os A a enteren RR 1 50 ERX125 200A7 WA Bra A ERA ae 1 48 ERX250A7W1B 5 in Genet ners deert brein td 1 49 Index ESIE07 08 T Technical Specifications ooooooocoroooo e eee 1 27 Test Run ERX125 250A7W1B abi ds a as 4 30 Thermistor Resistance Temperature Characteristics oee 2 4 Troubleshooting Additional Cheeks zat nnen A oe ee ane 3 119 by Remote Controller nnn ze one nne aen ae ORI a NEE In ent ene 3 8 General param ar ate da a ia ta le tc he dd lat 3 3 Symptom based acia ee Ay are ear eel Ra ee BEE ae ide MEE 3 4 Turn Power On ERX100 140A8VBB 0000 a AA A EE 4 35 ERX125250A7 WIB 0 dn ene Mebel SiS 4 19 UA A A A anaal EG 3 98 3 100 os dr ETE E S 3 103 US nan Meco doit area Te Studer Pak GAM den Ea Soha EA 3 104 3 107 NN A A A a aah ta Ni Ga ae aol Se ot cease a Sedan ala Mielec se 3 109 Atos a
265. tween inverter PC board and control PC board by microcomputer When the correct communication is not conducted in certain period Malfunction of connection between the inverter PC board and outdoor control PC board Defect of outdoor control PC board transmission section Defect of inverter PC board Defect of noise filter Faulty fan inverter Incorrect type of fan inverter Faulty compressor Faulty fan motor 3 86 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Troubleshooting Power ON Power OFF Are the fan transmission wire connectors X3A Black X4A Yellow wrongly connected YES Check whether or not the power supply voltage between L2 and N falls in the range of 220 to 240VAC Is the type PC No of the fan inverter correct YES NO gt Connect the connectors to NO the corresponding color black or yellow gt On site cause NO Correct the wiring Disconnect the cable from the compressor and then check the compressor for the insulation resistance The insulation resistance is low i e not more than 100k0 YES gt Mount the correct type of fan inverter FAN1 FAN2 RXYQ5P_ PC0511 3 RXYQ8P PC0511 1 a RXYQ10P PC0511 1 RXYQ12P PC0511 3 PC0511 4 RXYQ16P PC0511 3 PC0511 4 RXYQ18P PC0511 1 PCOS11 2
266. unction of system refrigerant system address 3 117 undefined Remark The system operates for malfunction codes indicated in shaded squares however be sure to check A and repair Part 3 Troubleshooting Troubleshooting ESIE07 08 1 8 Overview of Error Codes ERX100 140A8V3B 3 Blink 3 ON OFF Malfunction Operation Inspection Unit No Malfunction contents Page code lamp display Referred AO E Cs Cs Error of external protection device 3 26 Al xy xh 3 PC board defect E PROM defect 3 27 A9 Cs ces Malfunction of moving part of electronic 3 28 expansion valve 20E AJ Cs ces Malfunction of capacity setting 3 30 CA e 3 e Malfunction of Thermistor for Discharge Air 3 34 C C4 3 Cs Cs Malfunction of thermistor R2T for heat 3 31 9 exchange loose connection disconnection short 3 circuit failure C5 3 Cs Cs Malfunction of thermistor R3T for gas pipes 3 32 loose connection disconnection short circuit failure c9 3 Cs 3 Malfunction of thermistor R1T for air inlet loose 3 33 connection disconnection short circuit failure CJ xX 3 xt Malfunction of thermostat sensor in remote 3 35 controller El 3 Cs 3 PC board defect 3 39 E3 3 it Cs Actuation of high pressure switch 3 40 E4 3 ECS ECS Actuation of low pressure sensor 3 43 E5 3 3 Cs Compressor motor lock 3 45 E6 E Cs it Standa
267. unctionality ESIE07 08 1 5 Method of Replacing the Inverter s Power Transistors Modules Only ERX100 140A8V3B Checking failuresin Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester power semiconductors Items to be prepared mounted on Multiple tester inverter PC board 1 Prepare the digital type of multiple tester with diode check function Test points Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance Preparation To make measurement disconnect all connectors and terminals Inverter PC board Mer WHIT SA 250 Ps Feu C a USX UISX i 4 Ses 2 Ea woman grr2a tases y ze su Ze FO var Ui Eg E agy Ti Ovaa ETE Ed Tel ES PE h El 2 74 a e uo O4 Haix HEX pp Loven a leed 8 et i a 00 TC38T 881 SORR 1 8 E 3A aby O 2 10 Part 2 Functional Description ESIE07 08 General Functionality Power modu
268. ure increase thus Receiver to discharge pipe resulting in no damage of functional parts due to the increase of pressure in transpor tation or storage 1 R1T Thermistor Outdoor air Ta Used to detect outdoor temperature correct discharge pipe temperature and others 2 R2T Thermistor INV discharge used to detect discharge pipe temperature make the temperature protection control of pipe Tdi compressor and others 3 R3T Thermistor Suction pipe1 used to detect suction pipe temperature and others Ts1 4 R4T Thermistor Heat exchanger Used to detect liquid pipe temperature of air heat exchanger and others deicer Tb 5 R5T Thermistor Suction pipe2 Used to the calculation of an internal temperature of compressor etc Ts2 6 R6T Thermistor Subcooling heat Used to control of subcooling electronic expansion valve exchanger gas pipe Tsh 7 R7T Thermistor Liquid pipe Tl Used to detect refrigerant over charge in check operation and others Part 1 System Outline 1 45 Functional Diagrams ESIE07 08 3 6 Pipe Connection Diameters Outdoor units The table below contains the refrigerant pipe connection diameters 3 phase Model Gas pipe brazing Liquid pipe brazing ERX125A7W1B 15 9 mm 9 5mm ERX200A7W1B 19 1 mm ERX250A7W1B 22 2 mm Outdoor units The table below contains the refrigerant pipe connection diameters 1 phase Model Y
269. urn 0 Y o Solenoid valve Y 15 hot gas bypass Low pressure sensor R Pressure switch S1PH S1NPL E o high pressure protector o al N S Vacuuming and Thermistor R35 dehydration ports MIC discharge pipe 2PW28401B 1 10 Part 1 System Outline ESIE07 08 General Outline Outdoor Units Front view ce ce 0909 ON Tie wrap 4 positions High pressure sensor S1NPH ee NON Liquid stop valve Thermistor coil A4T Gas stop valve ce ce 9 NY NNN o o o Inverter Compressor M1C 2PW28401B Part 1 System Outline General Outline Outdoor Units ESIE07 08 1 7 ERX200A7W1B Functional Parts Layout Plan Accumulator assy Heat exchanger assy I High pressure g J sensor S1NPH O O A A y Fo O TT d Liquid pipe assy A Lt o H gt o E i Q O A o Vacuuming and Thermistor M1C Pressure switch S1PH dehydration ports dicharge pipe R35 high pressure protection 2PW28402B 1 12 Part 1 System Outline ESIE07 08 General Outline Outdoor Units Front view Thermistor R5T cub cooling heat exchanger ta A PE High pressure
270. urn M1C M2C 2PW28403B Part 1 System Outline 1 15 General Outline Outdoor Units ESIE07 08 1 9 ERX100 140A8V3B Functional Parts Layout Birds eye view SOLENOID VALVE CONNECTOR COLOR BLACK REACTOR LEAD WIRE HIGH VOLTAGE SOLENOID VALVE LEAD WIRE CONNECTOR COLOR BLACK HIGH VOLTAGE 4 WAY VALVE LEAD WIRE CONNECTOR COLOR BLUE HIGH VOLTAGE PRESSURE SENSOR HIGH LEAD WIRE CONNECTOR COLOR RED LOW VOLTAGE PRESSURE SENSOR LOW LEAD WIRE CSINPL CONNECTOR COLOR BLUE SOLENOID VALVE LEAD WIRE CONNECTOR COLOR PINK HIGH VOLTAGE THERMISTOR SUCTION 2 MARKING COLOR GREEN PRESSURE SWITCH LEAD WIRE CONNECTOR COLOR WHITE CRANKCASE HEATER LEAD WIRE E1HC CONNECTOR COLOR GRAY HIGH VOLTAGE THERMISTOR DISCHARGE PRESSURE SENSOR HIGH CONNECTOR COLOR RED 4 WAY VALVE CONNECTOR COLOR BLUE HIGH VOLTAGE SS AN e SAS SS a ISS S N 7 CR3T THERMISTOR SUCTION 1 MARKING COLOR RED THERMISTOR SUCTION 2 MARKING COLOR GREEN S1NPL PRESSURE SENSOR LOW CONNECTOR COLOR BLUE SOLENOID VALVE CONNECTOR COLOR PINK HIGH VOLTAGE PRESSURE SWITCH ELECTRONIC EXPANSION VALVE CONNECTOR COLOR WHITE THERMISTOR LIQUID PIPE ELECTRONIC EXPANSION VALVE CONNECTOR COLOR BLU
271. ut the compressor does not operate Returns to normal when automatic setting is complete 4 32 Part 4 Commissioning and Test Run ESIE07 08 Test Operation 2 6 3 When an Indoor Unit or Outdoor unit PC Board has been Changed ERX125 250A7W1B General Be sure to push and hold the RESET button for 5 seconds If not the addition cannot be recognized In this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P ON Can also be set during operation described above Indoor unit If T1 T2 is closed during operation described above the UH or U4 mal function indicator blinks Returns to normal when automatic setting is com plete Lift this protruding portion to open the inspection door El Compo Box cover LED H1 8 Push button switch BS1 5 ZN Inspection door DIP switch 2 DS2 1 4 DIP switch 1 DS1 1 4 Service Precautions label XL Lf gt Switch box cover Switch box the upper right VIII Y Y Caution When the 400 volt power supply is applied to N phase by mistake replace Inverter PCB A2P and control transformer T1R T2R in switch box together Part 4 Commissioning and Test Run 4 33 Test Operation ESIE07 08 2 7 Procedure and Outline ERX100 140A8V3B Contents Follow th
272. utdoor unit concerned or outdoor unit s concerned Set with No 19 or 42 and to conduct emergency operation of the For system with multiple outdoor units system only with operable compressor s Set with No 38 39 or 40 or outdoor unit s DES f 8 Additional refrig If a necessary amount of refrigerant cannot Set No 20 of Setting mode 2 to ON and erant charging be charged due to the stop of outdoor unit then charge refrigerant 1 operate the outdoor unit and then refill gt refrigerant 9 Refrigerant Used to recover refrigerant on site Set No 21 of Setting mode 2 to ON a recovery mode With operations of indoor and outdoor units 8 41 prohibited fully open the expansion valve 5 of the indoor and outdoor units N 10 Vacuuming Used to conduct vacuuming on site Set No 21 of Setting mode 2 to ON mode 1 Fully open the expansion valves of the indoor and outdoor units and energize part of solenoid valves Use a vacuum pump to conduct vacuuming 12 Power transistor Used for the troubleshooting of DC com Set No 28 of Setting mode 2 to ON check mode pressors Inverter waveform output makes it possible to judge whether a malfunction results from the compressor or the PC board For setting items of 1 refer to detailed information provided on page 4 6 onward Part 4 Commissioning and Test Run 4 7 4 Field settings ESIE07 08 1 4 2 Setting by DIP Switches ERX125 25
273. utline 1 54 ESIE07 08 Wiring Diagrams Outdoor Units A1P Printed circuit board Main PS Switching power supply A1P A3P A2P Printed circuit board Noise filter Q1RP Phase reversal detect circuit A3P Printed circuit board Inv R10 Resistor curreent sensor A4P A4P Printed circuit board Fan R50 R59 Resistor BS1 BS5 Push button switch R95 Resistor Current limiting Mode set return test reset RAT Thermistor Air A1P C1 Capacitor R1T Thermistor Fin A3P C63 C66 Capacitor R2T Thermistor Suction DS1 DS2 Dip switch R3T Thermistor M1C discharge E1HC Crankcase heater R4T Thermistor Heat exc deicer F1U Fuse 8A 250V A4P R5T Thermistor Liq pipe F1U F2U Fuse T 3 15A 250V A1P S1NPH Pressure sensor High F400U Fuse T 6 3A 250V A2P S1NPL Pressure sensor Low H1P H8P Pilot lamp serv monitor orange S1PH Pressure switch High H2P prepare test nn flickering SD1 Safety devices input H2P Malfunction detection light up VIR Power module A4P HAP Pilot lamp VIR V2R Power module A3P Service monitor green A1P X1A X2A Connector M1F K1 Magnetic relay X1M Terminal strip Power supply K2 Magnetic contactor M1C X1M Terminal strip Control A1P K3R Magnetic relay Y1S X1M Terminal strip ABC I p A5P K4R Magnetic relay Y2S Y1S Solenoid valve Hot gas K7R Magnetic relay E1HC Y
274. vation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure ERX125 250A7W1B High pressure not limited Pc HP pressure sensor detectionvalue de for each outdoor unit Pc gt 3 43MPa INV upper limit frequency INV upper limit rps max 3 step down from current compressor rps 4 After 10 sec Pc gt 3 43MPa Pc lt 3 24MPa alNV upper limit frequency Current step maintained 1 step up from current compressor Pc gt 3 55MPa ee After 15 sec feae A After 10 sec STD compressor Pc gt 3 64MPa standby When occurring 3 times within30 min HPS High pressure standby is activated without highpressure standby thus outputting themalfunction code E3 2 30 Part 2 Functional Description ESIE07 08 Outdoor Unit Functional Concept ERX100 140A8V3B Pc gt 3 47MPa High t limited gn pressure noe Pc HP pressure sensor detection value INV upper limit frequency Max High pressure limited INV upper limit frequency 3 step down from current compressor frequency After 10 sec 4 A Po gt sa7uPa YH Keeping the current step Pc lt 3 23MPa After 15 se 9 INV upper limit frequency 1 step up from current compressor frequency Pc gt 3 64MPa High pressure standby When occurring 10 times within 60 minutes o gt HPS is activated without high pressure standby
275. wer Supply Cable 1 Turn off the power supply Measure the resistance between phases of U V W at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected Red U Measure the resistance White Vv values between phases U V W Black Ww 3 120 Part 3 Troubleshooting ESIE07 08 Additional Checks for Troubleshooting 5 3 Check No 2 1 Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected Furthermore to use a multiple meter for measurement connect the probe of negative pole to Vcc and that of positive pole to GND 5 Gray ano 4 Pink O Vcc Measure the resistance values 3 Orange O Ww between Vcc and U V W and GND and U V W 2 Blue O v 1 Yellow O U Part 3 Troubleshooting 3 121 Additional Checks for Troubleshooting ESIE07 08
276. y l Error code Applicable models ERX125 250A7W1B Method of Detection of abnormal signal from fan motor malfunction detection Malfunction In case of detection of abnormal signal at starting fan motor decision conditions Supposed causes Abnormal fan motor signal circuit malfunction Broken short or disconnection connector of fan motor connection cable Fan Inverter PC board malfunction Turn power off Is the fan motor connector NO X2A connected to PC board for gt Connect correctly Fan inverter correctly YES Check of fan motor connector 1 Troubleshooting The resistance of fan motor read wire connector NO Replace f t pins between Vcc UVW and gt Replace tan motor GND UVW balanced gt Replace fan inverter PC Board ASP Note 1 Disconnect connector X2A and measure the following resistance 3 60 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units Graph X2A 5Gray GND Measure the EEM O vee i resistance between Vcc UVW and GND WwW 3 Orange O UVW 2Blue C v 1 Yellow C U Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 61 Error Codes Outdoor Units ESIE07 08 3 13 Error code Applicable models Method of malfunction
277. y remote controller air temperature thermistor Note1 When the remote controller air temperature thermistor becomes disconnected or shorted while the unit is running Defect of remote controller thermistor Defect of remote controller PC board then power ON again Is CJ displayed on the YES remote controller NO pe External factor other than equipment malfunction for example noise etc Turn power supply OFF gt Replace remote controller Refer to thermistor resistance temperature characteristics table on page 2 4 In case of remote controller thermistor malfunction unit is still operable by suction air thermistor on indoor unit Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Part 3 Troubleshooting 3 35 Error Codes Indoor Unit Expansion Valve Kit ESIE07 08 3 36 Part 3 Troubleshooting ESIE07 08 Error Codes Outdoor Units 3 Error Codes Outdoor Units 3 1 What Is in This Chapter Introduction In the first stage of the troubleshooting sequence it is important to correctly interpret the error code on the remote controller display The error code helps you to find the cause of the problem Overview This chapter contains the following topics Topic See page 3 2 E1 Outdoor Unit PC Board Defect 3 39 3 3 E3 Outdoor Unit Actuation of High P

SM_ESIE07-08_ERX100~140A8V3B, ERX125

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