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SERVICE MANUAL - Aire Acondicionado Mitsubishi Electric

1. 0 Switch OFF 1 Switch ON 0 Switch OFF 1 Switch ON ont oe Data display 1 7 Data display olol o o o o 00 00 olo olo 00 00 1 o fofofolo 00 01 1 0 0 O 00 01 o 1 o olojo 00 02 o 1 o o 00 02 1l lo ololo 00 03 1lilolo 00 03 olo lololo 00 04 olol 1 lo 00 04 1loli ololo 00 05 1lolilo 00 05 ol l l lololo 00 06 o 1 1 o 00 06 1 1 1 o0fo0 0 00 07 1 1 1 0 00 07 o0lolol1iljolo 00 08 0joljoli1 00 08 1 o0 o 1 ol o 00 09 ilolo la 00 09 o 1 o0 1 o0 0 00 0A oliloli 00 0A 1l lo lilolo 00 Ob 1 1 0 1 00 Ob o o 1i i i o o 00 0C ololilai 00 0C 1 o 1 1 0 0 00 Od ilol i li 00 Od o 1 1 1 o0 o 00 0E olilili 00 0E 1lilil ilolo 00 OF i T 134 00 OF olol o o 1 o 00 10 1 0lolol1ilo0 00 11 0o 1 olol 0 00 12 0 Switch OFF 1 Switch ON 1 1 fofo filfo 00 13 SW8 Data display ololilolilo 00 14 11213 1 o 1 o 1 o 00 15 ojojo 00 00 olililolilo 00 16 11 00 00 01 1 1 1 o0 1 0 00 17 0 1 0 00 02 olo lolililo 00 18 1 11 0 00 03 1ilololililo 00 19 ojoj1 00 04 o 1 o 1 1 o 00 1A 1 0 1 00 05 1 1 o 1 11 0 00 1B ojiji 00 06 olo ilililo 00 1C ee 00 07 1lolilili lo 00 1D olil lilili o 00 1E 1 1 4 1 1 0 00 1F 0 Switch OFF 1 Switch ON o0lolololjoli 00 20 SW4 SW9 SW10 1lolololo i 00 21 1 2 Data displ y 0 1 0101 0 1 00 22 0 0 00 00 1 1 ofofo 41 00
2. 2 S aa e Description Request content Unit Remarks Display range amp 50 Indoor unit Control state Refer to 12 2 1 Detail Contents in Request Code _ 51 Outdoor unit Control state Refer to 12 2 1 Detail Contentsin Request Code 52 Compressor Frequency control state Refer to 12 2 1 Detail Contentsin Request Code _ 53 Outdoor unit Fan control state Refer to 12 2 1 Detail Contentsin Request Code 54 Actuator output state Refer to 12 2 1 Detail Contentsin Request Code _ 55 Error content U9 Refer to 12 2 1 Detail Contentsin Request Code _ 56 57 58 59 60 Signal transmission demand capacity 0 255 61 Contact demand capacity Refer to 12 2 1 Detail Contentsin Request Code _ 62 External input state silent mode etc Refer to 12 2 1 Detail Contents in Request Code 63 64 65 66 67 68 69 70 Outdoor unit Capacity setting display Refer to 12 2 1 Detail Contents in Request Code _ 71 Outdoor unit Setting information Refer to 12 2 1 Detail Contentsin Request Code _ 72 73 Outdoor unit SW1 setting information Refer to 12 2 1 Detail Contents in Request Code _ 74 Outdoor unit SW2 setting information Refer to 12 2 1 Detail Contentsin Request Code _ rs 76 Outdoor unit SW4 setting information Refer to 12 2 1 Detail Contents in Request Code 77
3. PUHZ SHW112YHA PUHZ SHW140YHA SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply gt CK Capacitor C B Controller Circuit Board TB2 Terminal Block lt Indoor Outdoor gt RS Rush Current Protect Resistor SW1 Switch lt Manual Defrost Defect History MC Motor for Compressor P B Power Circuit Board Record Reset Refrigerant Address gt MF1 MF2 Fan Motor TB U V W_ Connection Terminal lt U V W Phase gt SW4 Switch lt Test Operation gt 21S4 Solenoid Valve Four Way Valve TB L1 L2 L3 Connection Terminal lt L1 L2 L3 Power Supply gt SW5 Switch lt Function Switch Model Select gt 63H High Pressure Switch TB N Connection Terminal SW6 Switch lt Model Select gt 63L Low Pressure Switch X52CA 52C Relay Sw7 Switch lt Function Switch gt 63HS High Pressure Sensor N F Noise Filter Circuit Board SWw8 Switch lt Function Switch gt TH3 Thermistor lt Liquid gt L14 LI2 LIS NI Connection Terminal lt L1 L2 L3 N Power Supply gt Sw9 Switch lt Function Switch gt TH4 Thermistor lt Discharge gt LO1 L02 L03 NO Connection Terminal lt L1 L2 L3 N Power Supply gt SWP Switch lt Pump Down gt TH6 Thermistor lt 2 Phase Pipe gt GD1 GD3_ Connection Terminal lt Ground gt
4. L30UT X52CB gt el E ag p g OJO g e S1 INDOORJ 82 5 UNIT z S3 2 5 N F 3 CNACT G CNOT hy oh CNAC2 ae WHT 1 1 RED 1 f2 1 3 RED ACLI Pru LOt RED mae ite ACL2 POWER x z WaT DASS SUPPLY ac 1 UF 103 BLK ACL3 400V 50Hz J INNY I NO Bu pos L M NET ADAPTER SYMBOL NAME hr p TB7 Terminal Block lt M NET connection gt T CN5 Connector lt Transmission gt H ih CND Connector _ lt Power Supply gt CN2M Connector_ lt M NET communication gt GDi GD3 enoet 1 3 H cnt PNK GA GA BLU Ie ACLA 1 MODEL SELECT 2 S E The black square m indicates a switch position fat MODEL Swe SW5 6 2 3 Ambient temp of ZUBADAN Flash Injection becomes effective s a ON ON The black square g indicates a switch position 112Y OFF Ne ini end OFE HHE Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 12345678 123456 ON ON E ON E ON SC orless G jg 3C or less ore HHM uov or eee o HHE Initial setting 1234 1234 12345678 123456 5 ON 5 ON 2 SWS5 1 to 5 Function Switch 0C orless OFF du 6C or less OFF 1234 1234 4 SW9 1 to 2 Function Switch 1 6 OCH526B 8 WIRING SPECIFICATIONS FIELD ELECTRICAL WIRING power wiring specifications Outdoor
5. SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply gt CK Capacitor C B Controller Circuit Board TB2 Terminal Block lt Indoor Outdoor gt RS Rush Current Protect Resistor swi Switch lt Manual Defrost Defect History MC Motor for Compressor P B Power Circuit Board lt L1 L2 L3 Power Supply gt Record Reset Refrigerant Address gt MF1 MF2 Fan Motor TB U VIW_ Connection Terminal lt U V W Phase gt SW4 Switch lt Test Operation gt 21S4 Solenoid Valve Four Way Valve TB L1 L2 L3 Connection Terminal SW5 Switch lt Function Switch Model Select gt 63H High Pressure Switch TB N Connection Terminal swe Switch lt Model Select gt 63L Low Pressure Switch X52CA B 52C Relay SW7 Switch lt Function Switch gt 63HS High Pressure Sensor N F Noise Filter Circuit Board Sw8 Switch lt Function Switch gt TH3 Thermistor lt Liquid gt L14 LI2 LIS NI Connection Terminal lt L1 L2 L3 N Power Supply gt Sw9 Switch lt Function Switch gt TH4 Thermistor lt Discharge gt L01 L02 L03 NO Connection Terminal lt L1 L2 L3 N Power Supply gt SWP Switch lt Pump Down gt TH6 Thermistor lt 2 Phase Pipe gt GD1 GD3_ Connection Terminal lt Ground gt CN31 Connector lt Emergency Operation gt TH7 Thermistor lt Ambient gt CONV B Converter Circuit Board CNDM Connector lt Connection for Option gt TH8 Thermistor lt Heat Sink gt L1 A1 IN__ Connection Terminal lt L1 P
6. D EFF ba Description 8 Request content i Unit Remarks Display range g a 153 154 Indoor Fan operating time 0 9999 4 Hour After filter is reset Indoor Total ting ti 155 ee 0 9999 10 hours Fan motor ON time 156 157 Indoor fan output value Sj value 0 255 Fan control data For indoor fan phase control Indoor fan output value z ee 4 158 00 indicates fan control data _ For indoor fan pulsation control Pulsation ON OFF 159 Indoor fan output value duty value 00 indicates fan control data _ For indoor DC brushless motor control 160 161 162 Indoor unit Model setting information Refer to 12 2 1 Detail Contentsin Request Code 163 Indoor unit Capacity setting information Refer to 12 2 1 Detail Contentsin Request Code _ 164 Indoor unit SW3 information Undefined _ 165 Wireless pair No indoor control board side setting Refer to 12 2 1 Detail Contents in Request Code _ 166 Indoor unit SW5 information Undefined 167 169 190 Indoor unit Microprocessor version information Examples Ver 5 01 0501 Ver 191 Indoor unit Microprocessor version information sub No Auxiliary information displayed after version information _ Examples Ver 5 01 A000 A000 192 764 765 Stable operation Heat mode This request code is not provided to collect data It is used to fix the operation state 766 Stable opera
7. BLK BLK RED WHT PIE BLK BLK o pe DCL FIT V Z W U YN pn MO M NET ADAPTER cyi SYMBOL NAME I kao TB7 Terminal Block lt M NET connection gt A 9 CN5 Connector lt Transmission gt s 3 CND Connector lt Power Supply gt CN2M Connector lt M NET communication gt 9 L N O s8t s2 s3 TB1 i 3 Ambient temp of ZUBADAN Flash Injection becomes effective i i 1 P ss O indicates a switch position The black square W indicates a switch position i u MODEL q Swe SWS i Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 i cae 5 ON ON d L on JU CE OML oN E 3 C or less Gs H Wm 3 C or less or E POWER SUPPLY 80V Om M orr OOOO Initial setting 1234 1234 IN 230V 50Hz ON ON I on Om HEL jon E 0 C or less oFF DOH 6 C or less OFF 112V OFF LI U NL OFF 1234 1234 12345678 123456 4 SWS 1 to 2 Function Switch 2 SW5 1 to 5 Function Switch OCH526B 12
8. Compressor operating current on error occurring 0 20 Error code history 1 latest When no error history Alternate display of abnormal unit 0 and are displayed by turns number and code Code display Error code history 2 When no error history Alternate display of error unit number Q and are displayed by turns and code Code display Thermo ON time 0 999 0 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 245 minutes Minute 0 5 secs O 5secs 2 secs 2 gt 45 gt t J Test run elapsed time 0 120 0 120 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 105 minutes Minute 0 5 secs 0 5secs 2 secs 1 gt 05 t J 75 OCH526B The black square m indicates a switch position SW2 setting Display detail Explanation for display The number of connected indoor units 0 3 The number of connected indoor units are dis played Capacity setting display Displayed as an outdoor capacity code Capacity SHW80V Code SHW112V 112Y display SHW140Y Outdoor unit setting information lt The tens digit To
9. Service Ref PUHZ SHW80VHA PUHZ SHW112VHA Power supply phase cycle voltage Single 50 Hz 230V Max current A 29 5 35 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FJMMT Motor output kW 2 5 Starter type Inverter Protection devices HP switch LP switch Discharge thermo Comp surface thermo E Crankcase heater W Heat exchanger Plate fin coil 5 Fan Fan drive x No Propeller fan x 2 Q Fan motor output kW 0 074 0 074 Airflow m min CFM 100 3 530 5 Defrost method Reverse cycle Noise level Cooling dB 50 51 Heating dB 51 52 Dimensions W mm in 950 37 3 8 D mm in 330 30 13 1 3 16 H mm in 1 350 53 1 8 Weight kg Ib 120 265 Refrigerant R410A Charge kg Ib 5 5 12 1 Oil Model 1 40 FV50S Pipe size O D Liquid mm in 9 52 3 8 Gas mm in 15 88 5 8 Connection method Indoor side Flared 5 Outdoor side Flared Between the indoor amp Height difference Max 30 m outdoor unit Piping length Max 75 m Service Ref PUHZ SHW112YHA PUHZ SHW112YHAR1 PUHZ SHW140YHA PUHZ SHW140YHAR1 Power supply phase cycle voltage 3phase 50 Hz 400V Max current A 13 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FJLMT Motor output kW 2 5 Starter type Inverter Protection devices HP switch LP switch Discharge thermo Comp surface thermo E
10. Frequency control state Frequency control state Frequency control state Display Current limit control 0 No current limit 1 Primary current limit control is ON 2 Secondary current limit control is ON OCH526B Display Power currently Compressor Four way valve Solenoid valve supplied to compressor 0 1 ON 2 ON 3 ON ON 4 ON 5 ON ON 6 ON ON 7 ON ON ON 8 ON A ON ON Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 Requesting compressor to turn OFF F There are no corresponding units Frequency control state Display Discharge temperature Condensation temperature Anti freeze Heatsink temperature overheat prevention overheat prevention protection control overheat prevention 0 1 Controlled 2 Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled T Controlled Controlled Controlled 8 Controlled 9 Controlled Controlled A Controlled Controlled b Controlled Controlled Controlled C Controlled Controlled d Controlled Controlled Controlled E Controlled Controlled Controlled F Controlled Controlled Controlled Controlled 101 Fan control state Request code 53 Data display g 0 x Fan step correction value by heatsink temperatu
11. 59 noyoouwm Nin NIN Z6 inoyoouy lou Buidid gay 6 Nye 4 lou burdid juo13 z 3 3 2 arise 6 jnoysouy Wn lou Buun seay e Inoyoouy Gnoyoounse 2 Or Sr S OF aoy Buruna suang SDD DUDA Ajddns 16804 Imoyoouy Inojpouyzz z lou Bupjun y 1u6ri l ou Bul Ajddns JSMOd Inospouy 1noyoouyzz z lou Buidid yy6ry lou Bum Ajddns samog Bulow 10 ajpuey Bulaow Jo ppueH IC IC dC IC IC IC IC IC 0 EIU 11V OPIS y lul IN Jey IC sje aq aJOH jnoyoouy Buldid SEIU IY Bulaow 10 pueH UOHEDO uon9 uuoo 3ATVA dOLS JO UOHEDIPU Lx yout g ZS 6 3iV13 uono uuoo did GINO uesa yaY F you g 6 88 5 18 AYW14 uono uuoo did sy9 uesa yoy T S ON JO lduuex3zj NO 8q pue seal ybu guo Suono ulp y WO ape ag ueo Suono uuoo um pue Buidig SNOILOSUIC SNIJIMCONIdld 7 oe uey ss 1 4 NOILWONNOS lt 46 y Jog uonepunojJ gt Ajjeoo paseyound aq 1snuu siayseM pue sijog slloq OL uonepunoj y YIM u yun y 1no s aseald S11O8 NOILVGNNOS weep mojag ay U uwous p AOVdS JAYS Z iy oJ sjenuew uonli lsu ay u uab SI sjlejap 1e nonied Jo uoneue dx3 lduiex o1seq e smous mojag weibelp ay un aul puna 39vdS 3334 ale s
12. PUHZ SHW VHA PUHZ SHW Y MODEL x MODEL ON ON 80V OFFI m 112Y m 1 N lon FF m 1 0 Ol m 2 3 m 2 Model select SHW PUHZ SHW YHAR2 MODEL ON 112Y O OO NI O O OJN Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Auto recovery activates Please set Auto recovery basically by remote controller because all units do not have DIP SW Please refer to the indoor unit installation manual SW 7 1 2 are used for demand control SW7 1 2 are effective only at the demand control Refer to next page Special function b Please do not use SW7 3 4 6 usually Trouble might be caused by the usage condition Ki 2 Function of connector Action by open short operation wA Types Connector Function Effective timing
13. Error code displayed on remote controller Refer to service manual for indoor unit 71 OCH526B Indication Outdoor controller board LED1 Green LED2 Red Contents Inspection method 3 blinking 1 blinking Abnormality of discharging temperature TH4 and Comp surface temperature TH34 Abnormality of superheat due to low discharge temperature Check if stop valves are open Check if connectors TH4 LEV A and LEV B on outdoor controller board are not disconnected Check if unit is filled with specified amount of refrigerant Measure resistance values among terminals on indoor valve and outdoor linear expansion valve using a tester 2 blinking Abnormal high pressure High pressure switch 63H operated Abnormal low pressure Low pressure switch 63L operated Check if indoor outdoor units have a short cycle on their air ducts Check if connector 63H 63L on outdoor controller board is not disconnected Check if heat exchanger and filter is not dirty Measure resistance values among terminals on linear expansion valve using a tester 3 blinking Abnormality of outdoor fan motor rotational speed Protection from overheat operation TH3 Check the outdoor fan motor Check if connector TH3 63HS on outdoor controller board is disconnected 4 blinking Compressor overcurrent breaking Start up locked Compressor overcurr
14. Reset error Reset button BATINE EE Press the F4 button or the button to reset the error that is occurring Errors cannot be reset while the ON OFF operation is prohibited w Select OK with the F4 button Navigating through the screens e To go back to the Main menu OCH526B 22 Error information 1 2 Error code 4 Error unit WANI Ref address 8 Unt 1 Model name Serial No Reset error Reset button ma KE COC UOCE Fl Fe F3 F4 sblinks OQ v Error reset Reset current error J J Fl Fe F3 F4 h Error reset Error reset Main menu lt Checking the error information gt While no errors are occurring page 2 2 of the error information can be viewed by selecting Error information from the Main menu Errors cannot be reset from this screen Main Main menu 2 3 Restriction Energy saving Night setback Filter information b Error information Main display 5 Y Cursor lt Page p ss teri Fl F2 F3 F4 gPlinks lt Error history gt Select Service from the Main menu and press the Vv button NG Select Check with the F1 or F2 button and press the A button Service menu 1 2 Test run Input maintenance info Function setting b Check Self check Main menu 9 ae J F
15. OCH526B 98 S Bas y Request content pn Unit Remarks Display range x 103 Error history 1 latest Displayserror history is displayedifnohistory is present Code 104 Error history 2 second to last Displays errorhistory is displayedifnohistory is present Code 105 Error history 3 third to last Displays error history is displayedifnohistory is present Code 3 TH3 Abnormal thermistor display PHG 106 TH3 TH6 TH7 TH8 uz Sensor 8 TH8 number 0 No thermistor error 107 Operation mode at time of error Displayed in the same way as request code 0 108 Compressor Operating current at time of error 0 50 A 109 Compressor Accumulated operating time at time of error 0 9999 10 hours 110 Compressor Number of operation times at time of error 0 9999 100 times 111 Discharge temperature at time of error 3 217 Cc 112 Outdoor unit Liquid pipe 1 temperature TH3 at time of error 40 90 C 113 Outdoor unit Liquid pipe 2 temperature at time of error 40 90 G 114 Outdoor unit 2 phase pipe temperature TH6 attime oferror 39 88 C 115 116 Outdoor unit Outside air temperature TH7 at time of error 39 88 iG 117 Outdoor unit Heatsink temperature TH8 at time of error 40 200 Cc 118 Discharge superhe
16. Refrigerant address display Temperature button HOUR button Procedure 1 Press the CHECK button twice 2 Press the temperature buttons 3 Point the remote controller at the sensor on the indoor unit and press the HOUR button 4 Point the remote controller at the sensor on the indoor unit and press the ON OFF button 30 e CHECK lights and refrigerant address 00 blinks e Check that the remote controller s display has stopped before continuing Select the refrigerant address of the indoor unit for the self diagnosis Note Set refrigerant address using the outdoor unit s DIP switch SW1 For more information see the outdoor unit installation manual If an air conditioner error occurs the indoor unit s sensor emits an intermit tent buzzer sound the operation lamp blinks and the error code is output It takes 3 seconds at most for error code to appear e The check mode is cancelled e Refer to the following tables for details on the check codes Output pattern A Beeper sounds Beep Beep Beep Beep a gt i OPERATION qst 2nd 30 Repeated INDICATOR lamp blink Of on O o O Of on On pattern Self check ibi 2 5 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec 0 5 sec 0 5 sec starts x y eJ Start signal 7 er a received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates
17. Do not use refrigerant other than R410A If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc OCH526B Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and on the spec labels provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions 1 Cautions for service 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Only for R410A Gauge manifold Use the existing fitting specifications UNF 1 2 Use high tension side pre
18. Outdoor unit Indoor unit Unit number 01 Unit number 02 iL Fan mode Confirm C Remote controller When grouping different refrigerant systems if an indoor unit other than the one to which the refrigerant address has been set to perform fan operation there may be another refrigerant address that is the same as the specified one In this case check the DIP switch of the outdoor unit to see whether such a refrigerant address exists el Mode number 02 Indoor temperature detection Press the TEMP buttons v and A to select the desired setting number Setting number 3 Remote controller built in sensor The mode number and setting number will stop blinking and remain lit indicating the end of registration a9 98 5905 MIE EEN gt I Jes A If is displayed for both the mode number and setting number and 98 blinks in the room temperature display area a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path If you wish to continue to select other functions repeat steps to Complete function selection Hold down the FILTER CD mode is 15 to 28 and TEST buttons simultaneously for at least 2 seconds After a while the function selection screen will disappear and the air condi tioner OFF screen will reappear
19. Do not operate the remote controller for at least 30 seconds after completing function selection No operations will be accepted even if they are made Note If a function of an indoor unit is changed by function selection after installation is complete make sure that a y mark etc of Table 1 to indicate the change 87 OCH526B 11 1 3 Selecting functions using the wireless remote controller Type C Functions can be selected with the wireless remote controller Function selection using wireless remote controller is available only for refriger ant system with wireless function Refrigerant address cannot be specified by the wireless remote controller Flow of function selection procedure Flow of function selection procedure The flow of the function selection procedure is shown below This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation The procedure is given after the flow chart ide MITSUBISHI ELECTRIC CHECK Check the function selection setting Switch to function selection mode Troubleshooting mode is the mode entered when Enter address 50 in troubleshooting you press the CHECK button twice to display mode then press the HOUR button CHECK F ON OFF 68 TEMP
20. The up down vane will be automatically set to horizontal blow in these cases listed up on the left 1 3 After a while the up down vane will be automatically moved according to the setting of the remote controller Phone Calls From Customers How to Respond Note Something is wrong with the Air blows out for a while after HEAT operation is stopped This is not a malfunction The blower is operating just for cooling down the heated up air conditioner This will be done within 1 minute This control is conducted only when the HEAT operation is stopped with the electric heater ON However this control is also applied to the models which has no electric heater Something is wrong with the airflow direction The airflow direction is changed during COOL operation If the up down vane is set to downward in COOL operation it will be automatically set to horizontal blow by the microprocessor in order to prevent water from dropping down 1 Hr will be displayed on the remote controller if the up down vane is set to downward with the fan speed set to be less than LOW The airflow direction is changed during HEAT operation The airflow direction cannot be set by remote controller In HEAT operation the up down vane is automatically controlled according to the temperature of the indoor unit s heat exchanger In the following cases written below t
21. Initial setting when sent from the factory Remarks Power failure automatic recovery OFF ON 01 Indoor temperature Average data from each indoor unit Data from the indoor unit with remote controller 02 Data from main remote controller Not supported Supported Indoor unit does not intake outdoor air through LOSSNAY 03 Supported Indoor unit intakes outdoor air through LOSSNAY 240V 220V 230V 04 2 C Normal 3C 15 Humidifier control Heating mode When the compressor operates the humidifier also operates When the fan operates the humidifier also operates 16 Change of defrosting control Standard For high humidity 17 Refrigerant leakage setting 80 60 21 DO NI N N DO 09 PO IWNI Po The setting is applied to all the units in the same refrigerant system The functions above are available only when the wired remote controller is used The functions are not available for floor standing models Meaning of Function setting Mode02 indoor temperature detecting N N 0 1 Average data of the sensor on all the indoor units Indoor temperature ta REMOTE MAN REMOTE MAN ta A B 2 with remote controller No 2 Data of the sensor on the indoor unit that connected No 3 Data of the sensor on mai
22. address 0 YES Check the LED display of the outdoor unit after turning on the main power again Not displayed Is anything displayed Displayed Is EA or Eb NO displayed Is E8 displayed Can the unit be restarted Check the voltage between S2 and S3 on the terminal block of the outdoor unit DC 17V to DC 28V we YES 49 OCH526B e Breaking or poor contact of the indoor outdoor connecting wire e Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller e Defective outdoor controller circuit board e Defective outdoor controller circuit board Defective indoor controller board e Influence of electromagnetic noise e Defective outdoor power circuit board Defective indoor power board lt Fix the breaking or poor contact of the indoor outdoor connecting wire Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again e Replace the outdoor controller circuit board e Replace the outdoor controller circuit board Replace the indoor controller board of the indoor unit which does not operate e Not abnormal There may be the influence of electromagnetic noise Check the transmission wire and get rid of the causes e Replace the outdoor power circuit board
23. Communication error between the indoor and outdoor unit Outdoor unit protection device connector is open Self diagnosis of remote controller PLEASE WAIT is displayed for 6 minutes at most in case of indoor outdoor unit communication error Check LED3 on indoor controller board 1 When LEDS is not blinking Check indoor outdoor connecting wire for miswiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LEDS is blinking Indoor outdoor connecting wire is normal Check LED display on outdoor controller circuit board Refer to 10 9 Check protection device connector 63L and 63H for contact failure Refer to 10 8 3 When pressing the remote controller operation switch the OPERATION display is appeared but it will be turned off soon OCH526B Q After cancelling to select function from the remote controller the remote controller operation switch will be not accepted for approx 30 seconds 44 Normal operation Phenomena Factor Countermeasure 4 Even controlling by the wireless The pair number settings of the wireless remote Check the pair number settings remote controller no beep is heard controller and indoor controller board are and the unit does not start operating mismatched Operation display is indicated on wireless remote controller When operating by the wireless No operation for 2 minutes at most after the power O Normal oper
24. Main display Press to change the fan speed Main menu Press to go to the next page lt Menu structure of PAR 30MAA PAR 31MAA gt Main menu Press the MENU button Move the cursor to the desired item with the Vane Louver Vent Lossnay High power Timer as On Off timer Auto Off timer Weekly timer OU silent mode Operation lock Energy saving Restriction Temp range Auto return Schedule Night setback Filter information Error information Maintenance T Manual vane angle Initial setting Clock Contrast NANA ANI Main Sub Main display Auto mode Display details Language selection Service Test run Check Self check MADAN Auto descending panel Administrator password Input maintenance info Maintenance password Remote controller check P and F2 Function setting Mr Slim buttons and press the Not all functions are available on all models of indoor units OCH526B 90 SELECT button lt Main menu list of PAR 30MAA PAR 31MAA gt Setting and display items Setting details Vane Louver Vent Use to set the vane angle Lossnay Select a desired vane setting from five different settings Use to turn ON OFF the louver Select a d
25. Only push the pump down SWP switch if the unit is stopped However even if the unit is stopped and the pump down SWP switch is pushed less than 3 minutes after the compressor stops the refrigerant collecting operation cannot be performed Wait until the compressor has been stopped for 3 minutes and then push the pump down SWP switch again Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0 05 to 0 MPa Gauge approx 0 5 to 0 kgf cm and quickly stop the air conditioner e Because the unit automatically stops in about 3 minutes when the refrigerant collecting operation is completed LED1 off LED2 lit be sure to quickly close the gas ball valve However if LED 1 is lit LED2 is off and the unit is stopped open the liquid stop valve completely close the valve completely after 3 minutes or more have passed and then repeat step Open the gas ball valve completely e If the refrigerant collecting operation has been completed normally LED1 off LED2 lit the unit will remain stopped until the power supply is turned off e Note that when the extension piping is very long with a large refrigerant amount it may not be possible to perform a pump down operation In this case use refrigerant recovery equipment to collect all of the refrigerant in the system Turn off the power supply circuit breaker remove the gauge manifold and then disconnect the refrigerant pipe
26. Replace the indoor power board Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LED1 LED2 or LED3 Inspection method and troubleshooting Check the voltage of the terminal block TB6 of the remote controller YES DC 10V to DC 16V Check the status _Lighting of the LED2 Blinking Check the status of the LED2 after disconnecting the remote controller wire from the terminal block TB5 of the indoor unit Check the status Lighting of the LED2 Blinking OCH526B 50 Defective remote controller e Breaking or poor contact of the remote controller wire lt The remote controller wire short circuits Defective indoor controller board lt Replace the remote controller e Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If it is not between DC 10V and DC16V the indoor controller board must be defective e Check if the remote controller wire is short circuited e Replace the indoor controller board Before repair Frequent calling from customers Phone Calls From Customers How to Respond Unit does not operate at all The operating display of remote controller does not come on
27. Setting content External input state Request code 62 Data display 0 0 0 in L Setting content Display Setting value SWT Setting SW7 2 0 0 1 50 ON 2 75 ON 3 100 ON ON Input state Input present Display Contact demand Silent mode Spare 1 Spare 2 Input state input input input input 0 1 e 2 e 3 e e 4 e 5 e e 6 e e 7 e e 8 e 9 e e A e e b e e e G e e d e LI E e e F e e e 6 Outdoor unit Capacity setting display Request code 70 Data display Capacity 9 35 10 50 11 60 14 71 20 100 25 125 28 140 40 200 50 250 Outdoor unit Setting information Request code 71 Data display OCH526B 0 0 Setting information D Setting information Display Defrost mode 0 Standard Setting information 1 For high humidity Displa Single Heat pump pay 3 phase cooling only Single phase reat pump Cooling only 3 phase Hed pump Cooling only 103 Outdoor unit switch setting display SW1 to SW10 except SW3 Request codes 73 to 82
28. al LA LA N Operation lock setting is not used Initial setting value All operation buttons except On Off button are locked All operation buttons are locked The automatic mode is displayed when the operation mode is selected Initial setting value The automatic mode is not displayed when the operation mode is selected The temperature range limit is not active Initial setting value The temperature range can be changed on cooling dry mode The temperature range can be changed on heating mode The temperature range can be changed on automatic mode Automatic filter elevation panel up down operation mode Not necessary to set this mode Refer to OPERATION MANUAL of Optional Parts Panel for details on operation Fixed air flow direction mode Not necessary to set this mode Refer to OPERATION MANUAL of indoor unit for details on operation The remote controller will be the main controller Initial setting value The remote controller will be the sub controller The clock function can be used Initial setting value The clock function cannot be used Weekly timer can be used Initial setting value Auto off timer can be used Simple timer can be used Timer mode cannot be used The set contact numbers are not displayed in case of error Initial setting value The set contact numbers are displayed in case of error
29. 2 I TRANS 1 WHT 7 Re fees SEG 1 5 LEV C 6 CNDC 2 BLU a PNK HS B cs F2 8 Sk 1 bes BE fo 3 Ss Se 5 3 WHT 3124 CNB CNS HT RED BLI M NET ADAPTER CN2M WHT M NET ADAPTER SYMBOL NAME TB7 Terminal Block lt M NET connection gt CN2 CM CN5 Connector lt Transmission gt WHT WHT CND Connector lt Power Supply gt CN2M Connector lt M NET communication gt m E a ao z E 2 1514 z a INDOOR S2 ka 1 MODEL SELECT UNIT The black square g indicates 3 ES a switch position MODEL Sw6 ON oO OFF Pinin alal 12345678 112Y SW5 6 2 ON Tet ore HHH 123456 RED free MODEL SW6 WHT ON POWER OFF in tala ofa aed 12345678 400V 50Hz BIK 140Y SW5 6 2 ON M ore HHH 123456 2 SW5 1 to 5 Function Swit
30. Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied Unit cannot be restarted for a while after it has stopped Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microcomputer s directive Once the compressor is stopped the unit cannot be restarted for 3 minutes This control is also applied when the unit is turned on and off by remote controller Error code appears and blinks on the display of remote controller Error code will be displayed if any protection devices of the air conditioner are actuated What is error code Refer to SELF DIAGNOSIS ACTION TABLE Check if servicing is required for the error Remote controller PLEASE WAIT is displayed on the screen Wait around 2 minutes An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner PLEASE WAIT will be kept being displayed while that time FILTER is displayed on the screen This indicates that it is time to clean the air filters Clean the air filters Press the FILTER button on the remote controller twice to clear FILTER from the display See the operation manual that came with the product for how to clean the filters Display time of FILTER depends on the model Long life filter 2500 hrs Regular filter 100 hrs STAN
31. Dimension A Flare cutting dimensions Nominal dimensions inch Outside diameter mm Nominal dimensions inch diameter mm Dimension B Outside Dimension B mm R410A 1 4 6 35 17 0 3 8 9 52 22 0 26 0 29 0 Tools for R410A The following table shows whether conventional tools can be used or not Tools and materials Gauge manifold Charge hose Air purge refrigerant charge and operation check R410A tools Tool exclusive for R410A Can R22 tools be used R22 17 0 22 0 36 0mm for 24 0 indoor unit 27 0 of RP100 36 0 125 and 140 Can R407C tools be used Tool exclusive for R410A Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R410A Refrigerant cylinder Refrigerant charge Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alky Ibenzene oil minimum amount Ester oil ether oil O Alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R410A x Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x x Vacuum pump Flare tool Vacuum drying and air purge Flaring work of piping Tools
32. 2734 323 0 180 kQ 25 C 50 kQ 50 C 17kQ 70 C 8 kQ 90 C 4 KQ High temperature thermistor Thermistor lt Discharge gt TH4 e Thermistor lt Comp surface gt TH34 Thermistor R120 7 465 KQ 2 B constant 4057 2 1 1 Rt 7 465exp 4057 57344 393 20 C 250 kQ 70 C 34 kQ 30 C 160 kQ 80 C 24 kQ 40 C 104 kQ 90 C 17 5 kQ 50 C 70 kQ 100 C 13 0 kQ 60 C 48 kQ 110 C 9 8 kQ 57 OCH526B 50 Tk oO O oO Resistance kQ N O 10 200 150 100 Resistance kQ 50 500 400 Q Resistance kQ 200 100 20 10_0 10 20 30 40 50 Temperature C 25 25 50 75 100 Temperature C 50 75 Temperature C 125 100 120 Linear expansion valve 1 Operation summary of the linear expansion valve e Linear expansion valve opens closes through stepping motor after receiving the pulse signal from the outdoor controller board e Valve position can be changed in proportion to the number of pulse signal lt Connection between the outdoor controller board and the linear expansion valve gt Outdoor controller board Gray d 4 Orange 2 a pon E C Te 6 0000034 2 Yellow 4 ot lt 1 Black 5 A lt _ Connector LEV A wee LEV B LEV C LEV lt Output pulse signal and the valve
33. Between the indoor amp Height difference Max 30 m outdoor unit Piping length Max 75 m OCH526B 5 DATA 5 1 REFILLING REFRIGERANT CHARGE R410A kg Piping length one way Factory charged Service Ref PUHZ SHW80VHA lt 5 5 PUHZ SHW80VHAR2 BS U I PUHZ SHW112VHA PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHA PUHZ SHW140YHAR1 PUHZ SHW140YHAR2 BS U Additional charge is required for pipes longer than 10 m 5 2 COMPRESSOR TECHNICAL DATA at 20 PUHZ SHW112YHA PUHZ SHW80VHA PUHZ SHW140YHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112YHARQ2 BS UK Service Ref PUHZ SHW112YHAR1 _ _ i _ PUHZ SHW112VHA PUHZ SHW140YHARI PUHZ SHW112VHAR2 BS UK PUHZ SHW140YHAR2 BS UK Compressor model ANB33FJMMT ANB33FJLMT ANB33FJRMT ANB33FJQMT Winding Resistance Q 5 3 NOISE CRITERION CURVES PUHZ SHW80VHA PUHZ SHW112VHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHA2 BS UK PUHZ SHW112YHA PUHZ SHW140YHA PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK MODE SPL dB LINE COOLING 51 o HEATING 52 e e 90 s a gt 80 S E S 70 NG MICROPHONE S O 3
34. DCL Reactor SW4 Switch lt Test Operation gt MC Motor for Compressor CB Main Smoothing Capacitor Sw5 Switch lt Function Switch Model Select gt MF1 MF2 Fan Motor CY1 CY2 Capacitor SW6 Switch lt Model Select gt 21S4 Solenoid Valve Four Way Valve P B Power Circuit Board Sw7 Switch lt Function Switch gt 63H High Pressure Switch U V W Connection Terminal lt U V W Phase gt SW8 Switch lt Function Switch gt 63L Low Pressure Switch LI Connection Terminal lt L Phase gt SWI Switch lt Function Switch gt 63HS High Pressure Sensor NI Connection Terminal lt N Phase gt SWP Switch lt Pump Down gt TH3 Thermistor lt Liquid gt P2 Connection Terminal CN31 Connector lt Emergency Operation gt TH4 Thermistor lt Discharge gt N2 Connection Terminal CNDM Connector lt Connection for Option gt TH6 Thermistor lt 2 Phase Pipe gt DCL1 DCL2 Connection Terminal lt Reactor gt CN51 Connector lt Connection for Option gt TH7 Thermistor lt Ambient gt IGBT Power Module SV1 CH Connector lt Connection for Option gt TH8 Thermistor internal lt Heat Sink gt El E2 E3 E4 Connection Terminal lt Ground gt SS Connector lt Connection for Option gt TH32 Thermistor lt Suction gt 52C 52C Relay CNM Connector lt Connection for Option gt TH33 Thermistor lt Ref check gt C B Controller Circuit Board LED1 LED2 LED lt Operation Inspection Indicators gt TH34 Thermistor lt Comp Surface gt swi Switch lt Manual Defrost Defect History F1 F2 F3
35. Operation Inspection Indicators ACLI ACL2 ACL3 ACL4 Reactor CK OU Connection Terminal Fi F2 F3 F4 FUSE T6 3AL250V CY1 CY2 Capacitor X51 X52 X54 Relay pase When M NET adapter is connected 63H 63L LEV A LEV B oS piavei 1 1 3127 12 1 327 4 51 5 T gi 5 TH33 TH32 TH76 TH3 TH4 63HS TH34 LEV A LEV CNVMNT CNMNT YLW BLK RED WHT WHT WHT RED WHT RED WHT WHT M NET ADAPTER CN2M WHT X K K K KCKCK KKK KKCK I 1 CNM 14 WHT Ul ren u BRB ek HII SW4SWP SW8 SW5 oo CNDM CN3S WHT WHT w CN51 WHT becca kea eea on
36. RP50 70 lt Resetting the initial learning data gt If the unit has been relocated or if refrigerant has been additionally charged the initial learning data must be reset and learn ing performed again How to reset the data 1 Turn the main power OFF 2 Attach the short circuit pin for the emergency operation connector CN31 on the outdoor controller board to the ON side 3 Turn ON the test run switch SW4 1 on the outdoor controller board 4 The data will be reset when the main power is turned ON 5 Turn the main power OFF 6 Turn OFF the test run switch SW4 1 7 Return the short circuit pin for the emergency operation connector CN31 to the OFF side Under the following conditions it may not be possible to carry out stable operation or accurately detect refrigerant leaks When the outdoor intake temperature is 40 C or higher or when the indoor intake temperature is 23 C or less e When the indoor fan speed is not set to strong 110 OCH526B 13 4 2 PAR 21MAA Remote controller button position a MITSUBISHI ELECTRIC This air conditioner Outdoor unit can detect refrigerant leakage which may happen during a long period of use In order to enable beget S the leakage detection the following settings are required to let the Og unit memorize the initial condition initial refregerant amount ON OFF AN Caution eee ee ert at
37. SW2 on A Control Service Tool Refer to 10 10 Replace outdoor controller circuit board Note Emergency operation is available in case of abnormalities of TH3 TH32 TH33 TH6 and TH7 Refer to 10 8 Thermistors TH3 TH32 TH33 Thermistor lt Liquid gt lt Suction gt lt Ref check gt 40 C or below Thermistor lt 2 phase pipe gt Thermistor lt Ambient gt Thermistor lt Heatsink gt SHW112 140Y TH6 TH7 Name Open detection Short detection 90 C or above 90 C or above 90 C or above 102 C or above 40 C or below 40 C or below 35 C or below Internal thermistor SHW80 112V 35 C or below 170 C or above Temperature of heatsink Abnormal if TH8 detects temperature indi cated below SHW80V SHW112V SHW112Y SHW140Y TH8 Internal thermistor 80 112V TH8 Thermistor lt Heatsink gt 112 140Y The outdoor fan motor is locked Failure of outdoor fan motor Air flow path is clogged Rise of ambient temperature Defective thermistor Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit MO Check outdoor fan Check air flow path for cooling Check if there is something which causes temperature rise around outdoor unit Upper limit of ambient temperature is 46 C Turn off power and on again to check if U5 is displayed within 30 minutes If U4 is displayed instead of U5
38. Specify unit No 01 since the function applies to unit 01 ONOFF bution A Set address 01 while still in troubleshooting mode then press the MINUTE button igs Na Note You cannot specify the refrigerant address Change FAN _ AUTOSTOP a it No nou KA O0 Select mode No 24 function that raises set temperature by 4 degrees during HEAT operation NO MODE VANE AUTOSTART Set address 24 while still in troubleshooting mode then press the HOUR button TJE CHECK LOUVER h Select setting No 02 OFF Check button f HOUR button Set address 02 while still in troubleshooting mode then press the HOUR button TEST RUN min MINUTE button ser neker LOCK a pue YES End function selection mode Note When you switch to function selection mode End troubleshooting mode on the wireless remote controller s operation area the unit ends function selection mode automatically if nothing is input for 10 minutes or longer Operating instructions Check the function settings Press the f button twice continuously gt is lit and 00 blinks Press the temp A button once to set 50 Direct the wireless remote controller toward the receiver of the indoor unit and press the button Set the unit number Press the temp 0 button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiv
39. There may be some settings that cannot be made when the system is centrally controlled D A screen will appear that indicates the setting has been saved Navigating through the screens e To go back to the Main menu To return to the previous screen 84 OCH526B Service menu V2 gt Test run Input maintenance info Function setting Check Self check Main menu 9 v Service menu 2 2 gt Maintenance password Remote controller check Main menu 9 Service menu Not available Please stop the unit Service menu lt Function setting gt Select Service from the Main menu and press the button g Select Function setting with the F1 or F2 button and press the Q button Service menu 1 2 Test run Input maintenance info gt Function setting Check Self check Main menu 9 ara wa a j 000 Set the indoor unit refrigerant addresses and unit numbers with the F1 through F4 buttons and then press the button to confirm the current setting lt Checking the indoor unit No gt When the Q button is pressed the target indoor unit will start fan operation If the unit is common or when running all units all indoor units for the selected refrigerant address will start fan operation Function setting gt Ref address IJ Unit No ele 1 2 3 4 A
40. code in the following table i e n 5 for P5 the check code in the following table Output pattern B Beeper sounds Beep Beep Beep Beep Beep Beep Beep operation _ TT med sy Ir 15 294 lt Repeated INDICATOR s lt gt lt gt lt gt gt lamp blink Off On On O On On Off On On On pattern Self che check Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec starts k V Z Start signal a sa f oi received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates code in the following table i e n 5 for U2 the check code in the following table Output pattern A Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code amp om ecules Number of times 1 P1 Intake sensor error 2 P2 Pipe TH2 sensor error P9 Pipe TH5 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector open 5 P5 Drain pump error PA Forced compressor stop due to water leakage abnormality As for indoor 6 P6 Freezing Overheating protection operation unit refer to 7 EE Communication error between indoor and outdoor units indoor unit s 8 P8 Pipe temperat
41. oiseq e smous mojag WesbeIp u L 11 OCH526B 7 WIRING DIAGRAM PUHZ SHW80VHA PUHZ SHW112VHA TH33 TH32 TH7 TH6 TH3 TH4 SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt DCL Reactor SW4 Switch lt Test Operation gt MC Motor for Compressor CB Main Smoothing Capacitor SW5 Switch lt Function Switch Model Select gt MF1 MF2 Fan Motor CY1 CY2 Capacitor SW6 Switch lt Model Select gt 21S4 Solenoid Valve Four Way Valve PB Power Circuit Board SW7 Switch lt Function Switch gt 63H High Pressure Switch U V W Connection Terminal lt U V W Phase gt Sw8 Switch lt Function Switch gt 63L Low Pressure Switch LI Connection Terminal lt L Phase gt Sw9 Switch lt Function Switch gt 63HS High Pressure Sensor NI Connection Terminal lt N Phase gt SwP Switch lt Pump Down gt TH3 Thermistor lt Liquid gt P2 Connection Terminal CN31 Connector lt Emergency Operation gt TH4 Thermistor lt Discharge gt N2 Connection Terminal CNDM Connector lt Connection for Option gt TH6 Thermistor lt 2 Phase Pipe gt DCL1 DCL2 Connection Terminal lt Reactor gt CN51 Connector lt Connection for Option gt TH7 Thermistor lt Ambient gt IGBT Power Module SV1 CH Connector lt Connection for Option gt TH8 Thermistor internal lt Heat Sink gt El E2 E3 E4 Connection Terminal lt Ground gt Ss Connec
42. 88 on error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs gt 15 gt Pressure saturation temperature TesHs 39 88 on error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs O 5secs 2 secs gt 15 gt Outdoor pipe temperature Cond Eva 39 88 TH6 on error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs gt 15 gt t J Outdoor outside temperature TH7 on 39 88 error occurring When the temperature is 0 C or less and 39 88 temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs z gt 15 gt t J Outdoor heatsink temperature TH8 on 40 200 error occurring When the temperature is 0 C or less and 40 200 temperature are displayed by turns When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns 79 OCH526B The black square m indicates a switch position SW2
43. EHPT20X YM9HB UK EHPT20X TM9HB UK EHPT20X VM6B UK EHPT20X YM9B UK OCH531 EHSC VM2B ERSC VM2B 2 2 FOR AIR TO AIR SYSTEM Model name EHSC VM2B UK EHSC VM6B UK EHSC YM9B UK EHSC TM9B UK EHSC VM6EB UK EHSC YM9EB UK EHPX VM2B UK EHPX VM6B UK EHPX YM9B UK ERSC VM2B UK Service Ref OCH532 Service manual No PLA RP71 125BA2 PLA RP71 125BA2 UK OCH412 OCB412 PLA RP100BA3 PLA RP100BA3 OCH459 OCB459 PLA ZRP35 50 60 71 125BA PLA ZRP35 50 60 7 1 125BA OCH535 OCB535 PLA ZRP100BA PLA ZRP100BA OCH529 OCB529 PKA RP100KAL PKA RP100KAL TH OCH452 OCB452 PKA RP60 100FAL PKA RPSOFAL2 PKA RP60 100FAL PKA RPSOFAL2 0C331 PKA RPSOHAL PKA RPSOHAL OCH453 OCB453 PEAD RP50 60 71 100 125 JA L PEAD RP50 60 7 1 100 125 JA L R1 UK HWE08130 BWE09220 BWE09240 PEAD RP50 60 71 100 125 JA L Q OCH526B PEAD RP50 60 7 1 1 00 125 JA L Q UK BWE10160 3 SAFETY PRECAUTION 3 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal all supply circuits must be disconnected Preparation before the repair service e Prepare the proper tools Prepare the proper protectors e Provide adequate ventilation After stopping the operation of the air conditioner turn off the power supply breaker e Discharge the condenser before the work involving the electric parts P
44. LANGUAGE setting The language that appears on the dot display can be selected Press the MENU button to change the language Japanese JP English GB German D Spanish E Russian RU Italian 1 Chinese CH French F 4 2 Function limit 1 Operation function limit setting operation lock To switch the setting press the OON OFF button nol All operation buttons except ON OFF button are locked no2 All operation buttons are locked OFF Initial setting value Operation lock setting is not made To make the operation lock setting valid on the normal screen it is necessary to press buttons Press and hold down the FILTER and ON OFF buttons at the same time for 2 seconds on the normal screen after the above setting is made 2 Use of automatic mode setting When the remote controller is connected to the unit that has auto matic operation mode the following settings can be made To switch the setting press the OON OFF button ON Initial setting value The automatic mode is displayed when the operation mode is selected OFF The automatic mode is not displayed when the operation mode is selected 3 Temperature range limit setting After this setting is made the temperature can be changed within the set range To switch the setting press the ON OFF button LIMIT TEMP COOL MODE The temperature range can be changed on cooling dry m
45. NAME MC TB7 Terminal Block lt M NET connection gt pe CN5 Connector lt Transmission gt eh CND Connector lt Power Supply gt a 3 z CN2M Connector lt M NET communication gt o L N S1 s2 S3 TB1 3 Ambient temp of ZUBADAN Flash Injection becomes effective e i Cee a ee 1 MODEL SELECT The black square I indicates a switch position nes The black square m indicates a switch position Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 MODEL SW6 SW5 6 2 i ON a ON E ON ON ital etre or gm 3 C or less oF sov lore AA OFF A g 1234 1234 POWER SUPPLY 12 123456 N 230V 50Hz 5 ON E ON EE ON ON OC or less OFF 6C orless OFF 112V ofr ala fale OFF 1234 1234 12345678 123456 4 SWS 1 to 2 Function Switch 2 SW5 1 to 5 Function Switch OCH526B 15 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block Power Supply CK Capacitor C B Controller Circuit Board TB2 Terminal Block Indoor Outdoor RS Rush Current Protect Resistor swi Switch Manual Defrost Defect History MC Motor for Compressor P B Power Circuit Board L
46. The temperature unit C is used Initial setting value The temperature unit F is used Room air temperature is displayed Initial setting value Room air temperature is not displayed One of Automatic cooling and Automatic heating is displayed under the automatic mode is running Initial setting value Only Automatic is displayed under the automatic mode 12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 12 1 HOW TO MONITOR THE OPERATION DATA 12 1 1 PAR 31MAA Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller Select Service from the Main menu and press the button yr Select Check with the F1 NG F2 or Select Request code with the F1 or F2 button and press the button button and press the button Check menu 1 1 Error history Refrigerant volume check Refrigerant leak check Smooth maintenance gt Request code Service menu m 0o00 Set the Refrigerant address and Request code Select the item to be changed with the F1 or F2 button Select the required setting with the F3 or F4 button m lt Ref address gt setting 0 15 m lt Request code gt setting Press the button Data will be collected and displayed Request code 004 Dis
47. Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in case of group control system Check transmission path and remove the cause Note The descriptions above O are for EA Eb and EC lt Abnormalities detected while unit is operating gt Error Code Abnormal point and detection method Case Judgment and action High pressure High pressure switch 63H operated Abnormal if high pressure switch 63H operated 4 15 MPa during compressor operation 63H High pressure switch Short cycle of indoor unit Clogged filter of indoor unit Decreased airflow caused by dirt of indoor fan Dirt of indoor heat exchanger Locked indoor fan motor Malfunction of indoor fan motor Defective operation of stop valve Not full open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger Decreased airflow caused by defective inspection of outside temperature thermistor It detects lower temperature than actual temperature Disconnection or contact failure of connector 63H on outdoor controller board Disconnection or contact failure of 63H connection Defective
48. among phases 10V 400V AC Diode module DIP IPM TAB connector on X52CA i we Connect to the ranoo En 4 RS resistor BHOO A m TB L1 TB L2 TB L3 Connect to the Connect to the outdoor outdoor converter converter circuit board circuit board CN7 L1 OU L2 OU L3 OU 400V AC CN4 Connect to the outdoor controller circuit board CN4 Detection of primary current Connect to the outdoor noise filter circuit board CNCT CN2 CN6 Connect to the outdoor controller circuit board CN2 Thermistor Power circuit board Transmitting lt Heat sink gt TH8 signal to the controller board 0 5V DC Zero cross signal 0 5V DC Not used 16V DC 16V DC G 0 0 0 0 9 65 OCH526B s Outdoor power circuit board Brief Check of POWER MODULE PUHZ SHW112YHAR1 Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc PUHZ SHW112YHAR2 BS UK I WAN a l E means that they are broken Check o PUHZ SHW140YHAR1 L1 P1 L2 P1 L3FIP1 L1 N1 L2 N1 L3 N1 PUHZ SHW140YHAR2 BS UK eee ETAT P2 U P2 V IP2 W IN2 U J IN2 IV IN2 IW Note The marks L1
49. board E2 E3 CN52C Connect to the earth on HAND 500 a yh Ni RG0OOSS36S N zw f DANG U V W P2 DCL1 DCL2 El E4 CNAC1 CNAC2 NI LI Connect to the compres Connect to the smooth Connect to DCL Connect to the 230 V AC Voltage of 230 V AC is sor MC Voltage among ing capacitor CB earth Connect to the out input Connect to the ter phases 10 V 180 V AC door controller circuit minal block TB1 board CNAC 64 OCH526B Outdoor power circuit board Brief Check of POWER MODULE PUHZ SHW112YHA Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc PUHZ SHW140YHA If they are short circuited it means that they are broken 1 Check of DIODE MODULE L1 P1 L2 P1 L3 P1 L1 IN1 L2 N1 L3 N1 2 Check of DIP IPM P2 U P2 V IP2 W IN2 U IN2 IV IN2 IW Note The marks L1 L2 L3 INI N2 P4 P2 U V and W shown in the diagram are not actually printed on the board TB N TB U TB V TB W Connect to the CK capacitor Connect to the compressor MC Voltage
50. checking discharging capacity cannot be fully obtained pressure Replace linear expansion valve Refrigerant shortage If refrigerant leaks discharging temperature rises and LEV opening increases Inspect leakage by checking the temperature and opening Lack of insulation for refrigerant piping Check pipe connections for gas leakage Filter clogging Check the insulation Open suction grille and check the filter Clean the filter by removing dirt or dust on it Heat exchanger clogging If the filter is clogged indoor pipe temperature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pressure Clean the heat exchanger Air duct short cycle Remove the blockage Bypass circuit of outdoor unit fault Check refrigerant system during operation 8 For 3 minutes after temperature O Normal operation Normal operation adjuster turns off the compressor For protection of compressor will not start operating even if temperature adjuster is turned on For 3 minutes after temperature adjuster turns on the compressor will not stop operating even if temperature adjuster is turned off Compressor stops operating immediately when turning off by the remote controller 45 OCH526B Phenomena Countermeasure A flowing water sound or occasional hissing sound is heard m These sounds can be heard when refrigerant and
51. circuit of indoor unit or LOSSNAY 7 If displayed address or attribute is nonexistent OCH526B The unit of former address does not exist as address switch has changed while the unit was energized Abnormality is detected when indoor unit transmits signal because the address of FRESH MASTER and LOSSNAY are changed after sequential operation of FRESH MASTER and LOSSNAY by remote controller 43 Same as mentioned in A7 of the previous page Error Code Abnormal point and detection method Case Judgment and action M NET NO RESPONSE Abnormal if a message was transmitted and there were reply ACK that message was received but response command does not return Transmitting side detects abnormality every 30 seconds 6 times continuously Note The address and attribute displayed at remote controller indicate the controller that did not reply ACK A8 6608 Transmitting condition is repeated fault because of noise and the like Extinction of transmission wire voltage and signal is caused by over range transmission wire e Maximum distance 200m e Remote controller line 12m Extinction of transmission wire voltage and signal is caused by type unmatched transmis sion wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS VVR VVF VCT Diameter 1 25mm or more Accidental malfunction of abnormality
52. connecting wire terminal block S1 S2 S3 and remote controller terminal block 1 2 This may cause malfunction e Make sure that test run switch SWA is set to OFF before turning on power supply Turn on power supply for 12 hours before test run in order to protect compressor e For specific models which requires higher ceiling settings or power failure automatic recovery make proper changes of settings referring to the description of Selection of Functions through Remote Controller Make sure to read operation manual before test run Especially items to secure safety 20 OCH526B 10 2 2 Test run for wired remote controller lt PAR 31MAA gt Select Service from the Main menu and press the Q button g Select Test run with the F1 or F2 button and press the Q button ate MITSUBISHI ELECTRIC MENU RETURN SELECT ON OFF Function buttons F1 F2 F3 F4 Service menu 1 2 gt Test run Input maintenance info Function setting Check Self check Main menu 9 eee J j Fl F2 F3 Select Test run with the F1 or F2 button and press the Q button Test run menu gt Test run Drain pump test run Service menu NIN F1 F2 F3 F4 Test run operation Test run Remain 2 88 Press the F1 button to go through the operation
53. discharge temperature thermistor TH4 Check the coil of linear expansion valve Refer to 10 7 Check the connection or contact of LEV A and LEV B on outdoor controller circuit board Check linear expansion valve Refer to 10 6 Outdoor fan motor Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnormal if 100 rpm or below detected continuously for 15 seconds at 20 C or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute OCH526B O Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board Check or replace the DC fan motor Check the voltage of the outdoor circuit controller board during operation Replace the outdoor circuit controller board When the failure is still indicated even after performing the action above Error Code Abnormal point and detection method Case Judgment and action Detailed To find out the details about U9 e codes Refer to 10 10 rror turn ON SW2 1 2 2 2 3 2 4 2 5 and 2 6 when U9 error occurs To find out the detail history latest about U9 error turn ON SW2 1 2 2 and 2 6 Overvoltage error Increase in DC bus voltage to SHW80 112VHA 400V SHW112 140YHA 760V Abnormal increase in power source voltage Disconnection of compressor wi
54. ene Make sure to perform the test run and confirm the unit works reson OMENS a c is 5 ED without any problems before starting the following setting Saez SRE CHEK TEST For more precise detection make sure to set the airflow at CV Jr A Da am _ OMO High notch before enabling this setting PAR 21MAA CLEAR Display 1 How to select the Refrigerant Leakage Detection mode Refrigerant leakage detection gt Refrigerant leakage Detection is possible regardless the unit s operation ON or OFF initial teaching detection judgement Press button for more than 3 seconds to switch to GAS LEAK GAS LEAK EASY MAINTENANCE mode Display TEST START JUDGE 2 How to start the initial learning Press CLOCK button and select the GAS LEAK TEST START The initial learning for the leakage detection is always done once after the new installation or the data reset Display Waiting for stabilization Es Es Es CM gt stabilized After 45 minutes Press a button to confirm gt How to finish the initial learning Once the unit s operation is stabilized the initial learning is completed Press button for more than 3 seconds to cancel the initial leaning The initial learning can also be cancelled by pressing button 111 OCH526B 3 How to start Judgment of refrigerant leakage mode To know the current condition of refrigerant amount same operation must be performed Ple
55. for other refrigerants can be used if equipped with adap ter for reverse flow check Tools for other refrigerants can be used by adjusting flaring dimension A Usable if equipped with adapter for rever se flow A Usable by adjusting flaring dimension A Usable if equipped with adapter for rever se flow A Usable by adjusting flaring dimension Bender Bend the pipes Tools for other refrigerants can be used Pipe cutter Cut the pipes Tools for other refrigerants can be used Welder and nitrogen gas cylinder Weld the pipes Tools for other refrigerants can be used Refrigerant charging scale Charge refrigerant Tools for other refrigerants can be used Vacuum gauge or thermis tor vacuum gauge and vacuum valve Check the degree of vacuum Vacuum valve prevents back flow of oil and refri gerant to thermistor vacuum gauge Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A x Prepare a new tool Use the new tool as the tool exclusive for R410A A Tools for other refrigerants can be used under certain conditions O Tools for other refrigerants can be used OCH526B 4 SPECIFICATIONS
56. generated controller 10 5 TROUBLESHOOTING OF PROBLEMS Phenomena Factor Check transmission waveform or noise on transmission wire Turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If malfunction was accidental the unit returns to normal If the same abnormality generates again controller of displayed address and attribute may be defective Countermeasure 1 Remote controller display does not work DC12V is not supplied to remote controller Power supply display is not indicated on LCD DC12 15V is supplied to remote controller however no display is indicated e PLEASE WAIT is not displayed e PLEASE WAIT is displayed Check LED2 on indoor controller board 1 When LED2 is lit Check the remote controller wiring for breaking or contact failure 2 When LED2 is blinking Check short circuit of remote controller wiring 3 When LED2 is not lit Refer to No 3 below Check the following e Failure of remote controller if PLEASE WAIT is not displayed e Refer to No 2 below if PLEASE WAIT is displayed 2 PLEASE WAIT display is remained on the remote controller At longest 2 minutes after the power supply PLEASE Normal operation WAIT is displayed to start up Communication error between the remote controller and indoor unit
57. lead wire for TH4 TH34 Refer to 10 9 Check resistance value of TH4 TH34 or temperature by microprocessor Thermistor TH4 TH34 Refer to 10 6 SW2 on A Control Service Tool Refer to 10 10 Replace outdoor controller board Error Code Abnormal point and detection method Case Judgment and action U4 TH3 5105 TH6 5107 TH7 5106 TH8 5110 TH32 5105 TH33 5105 Open short of outdoor unit thermistors TH3 TH32 TH33 TH6 TH7 and TH8 Abnormal if open or short is detected during compressor operation Open detection of TH3 TH32 TH33 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting Note Check which unit has abnormality in its thermistor by switching the mode of SW2 PAC SK52ST Refer to 10 10 Disconnection or contact failure of connectors Outdoor controller circuit board TH3 TH32 TH33 TH7 6 Outdoor power circuit board CN3 Defective thermistor Defective outdoor controller circuit board Check connection of connector TH3 TH32 TH33 TH7 6 on the outdoor controller circuit board Check connection of connector CN3 on the outdoor power circuit board Check breaking of the lead wire for TH3 TH32 TH33 TH6 TH7 TH8 Refer to 10 9 Check resistance value of TH3 TH32 TH33 TH6 TH7 TH8 or check temperature by microprocessor TH3 TH6 TH7 TH8 Refer to 10 6
58. lower part of the main body shown as A firmly so that t the main body does not move and detach the coil by pulling it upward Be sure to detach the coil holding main body firmly Otherwise pipes can bend due to pressure A lt How to attach the coil gt Qty Hold the lower part of the main body shown as A firmly so that Angan the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stopper to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly attached to main body coil may be detached from the main body and that can cause defective operation of linear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break 59 OCH526B 10 8 EMERGENCY OPERATION 1 When the error codes shown below are displayed on outdoor unit or microprocessor for wired remote controller or indoor unit has a failure but no other problems are found emergency operation will be available by setting the emergency opera tion switch SWE on indoor controller board to ON and short circuiting the connector CN31 on outdoor controller board When following abnormalities occur emergency operation will be available Error code Inspected content U4 Open short of pipe thermistors TH3 T
59. main power supply when servicing And do not touch the S1 S2 S3 terminals when the power is energized If isolator should be used between indoor unit and outdoor unit please use 3 pole type Never splice the power cable or the indoor outdoor connection cable otherwise it may result in a smoke a fire or communication failure 17 OCH526B 9 REFRIGERANT SYSTEM DIAGRAM PUHZ SHW80VHA PUHZ SHW112VHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHA PUHZ SHW140YHA PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK P sensor TH7 Heat exchanger s Ambient 5 TH6 2 phase pipe Ball valve Refrigerant SA pipe Strainer 5 8 inch 50 age plug 13 High pressure Liquid Charge plug Muffler Low pressure lt Distributor q TH33 Suction Ref check Strainer TH4 100 Discharge TH34 Comp surface LEV A Strainer Refrigerant LIQUID pipe a connection Strainer 3 8 inch stopvaive 100 LEV C HC with service port Refrigerant flow in cooling lt Refrigerant flow in heating COMP Compressor DC inverter scroll compressor Mitsubishi Electric Corporation For protection OFF 4 15MPa For protection OFF 0 03MPa Reversing 4 way valve 21S4 Change the refrigerant circuit Heating Cooling and for Defrosting e Heat interchange circuit For high heating capacity Plate HEX P
60. mode power consumption is decreased within the range of usual 0 100 How to wire Basically the wiring is same with a Connect an SW 1 which is procured locally between Orange and Red 1 and 3 of the adapter for external signal input PAC SC36NA E and insulate the tip of the brown lead wire It is possible to set it to the following power consumption compared with ratings by setting the SW7 1 2 Power consumptopn SW1 ON 0 Operation stop SW7 1 SW7 2 70 OCH526B lt Display function of inspection for outdoor unit gt The blinking patterns of both LED1 green and LED2 red indicate the types of abnormality when it occurs Types of abnor mality can be indicated in details by connecting an optional part A Control Service Tool PAC SK52ST to connector CNM on outdoor controller board Display 1 Normal condition Outdoor controller board A Control Service Tool LED1 Green LED2 Red Error code Indication of the display Unit condition When the power is turned on Lighted Lighted 3S Alternately blinking display When unit stops Lighted Not lighted 00 etc Operation mode When compressor is warming up Lighted Not lighted 08 etc When unit operates Lighted Lighted C5 H7 etc 2 Abnormal condition Indication Outdoor controller board LED1 Green LED2 Red 1 blinking 2 blinking Connector 63L is open Check if connector 63H or 63L
61. modes in the order of Cool Pipe 280 and Heat age Swich disp Auto x v Cool mode Check the cold air blow off Mode Fan Heat mode Check the heat blow off aan wr Fl Fe FS F4 a Press the button and open the Vane setting screen e o Auto vane check Remain 2 00 Check the auto vane with the F1 F2 buttons e Check the operation of the outdoor unit s fan v Press the button to return to Test run operation am Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after two hours 21 OCH526B Fl Fe F3 F4 000 lt Error information gt When an error occurs the following screen will appear Check the error status stop the operation and consult your dealer Error code error unit refrigerant address unit model name and serial number will appear The model name and serial number will appear only if the information have been registered Press the F1 or F2 button to go to the next page D Contact information dealer s phone number will appear if the information have been registered Error information 1 2 Error code 4 Error unit IU Ref address p Unt 1 Model name Serial No Reset error Reset button maw Reset C J Fl Fe F3 F4 sblinks O00 Error information 2 2 Contact information Dealer Tel
62. on the outdoor controller Connector 63H is open board is not disconnected 2 connectors are open Check continuity of pressure switch 63H or 63L by tester inki inking Miswiring of indoor outdoor unit conne ifi i ire i 2 blinking 1 blinking cling wire excessive n mb r ot indoor Check if indoor outdoor connecting wire is connected correctly units 4 units or more Check if 4 or more indoor units are connected to outdoor unit Miswiring of indoor outdoor unit co Check if noise entered into indoor outdoor connecting wire nnecting wire converse wiring or di or power supply sconnection Re check error by turning off power and on again Contents Inspection method Startup time over 2 blinking Indoor outdoor unit communication error ifi i ire i g signal receiving error is detected by in Check if indoor outdoor connecting wire is connected correctly door unit Check if noise entered into indoor outdoor connecting wire or Indoor outdoor unit communication error power supply Wransmiiing error is detected by indoor Check if noise entered into indoor outdoor controller board Indoor outdoor unit communication error Re check error by turning off power and on again signal receiving error is detected by outdoor unit Indoor outdoor unit communication error transmitting error is detected by outdoor unit 3 blinking Remote controller signal receiving Check if connecting wire of i
63. only in the case of the FTC which is connected to the outdoor unit refrigerant addresses 0 LED3 communication between FTC and outdoor units Indicates state of communication between the FTC and outdoor units Make sure that this LED is always blinking OCH526B 46 Symptoms PLEASE WAIT is kept being displayed on the remote controller Diaqnosis flow Inspection method and x troubleshooting Check the display time of PLEASE WAIT after turning on the main power 6 minutes 2 minutes or more Fowlngis PLEASE WAT of less PLEASE WAIT Normal kept being displayed on the f 2 ae emote controller will be displayed The start up diagnosis will i during the start up be over in around 2 minutes 2to6 diagnosis after turning minutes on the main power Are any error codes displayed on the emote controller Check the LED display of the outdoor controller circuit board displayed onthe LED e Miswiring of indoor Refer to Self diagnosis outdoor connecting action table in order to wire solve the trouble NO Breaking of indoor outdoor connecting In case of communication wire S3 errors the display of Defective indoor remote controller may not controller board match the LED display of e Defective outdoor the outdoor unit controller circuit board Defective indoor controller board Defective remote c
64. operation gt Opening a valve 8 gt 7 6 5 4 3 2 1 8 Closing a valve 1 gt 2 3 4 5 gt 6 7 8 1 The output pulse shifts in above order When linear expansion valve operation stops all output phase become OFF When the switch is turned on 700 pulse closing valve signal will be sent till it goes to point in order to define the valve position The pulse signal is being sent for about 20 seconds 2 Linear expansion valve operation When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from to or when the valve is locked we sound can be heard 5 No sound is heard when the pulse number moves from to in case coil is burnt out or motor is locked by open phase Q 5 i Sound can be detected by placing the ear against the screw driver o i handle while putting the screw driver to the linear expansion z valve gt Close Open I 1 500 pulse Opening a valve all the way I I Pulse number Extra tightening about 32 pulse 58 OCH526B 3 How to attach and detach the coil of linear expansion valve lt Composition gt Linear expansion valve is separable into the main body and the coil as shown in the diagram below Stopper Main body Coil Lead wire lt How to detach the coil gt Hold the
65. outdoor controller board Leakage or shortage of refrigerant Malfunction of linear expansion valve 37 Check stop valve Turn the power off and on again to check if F3 is displayed on restarting If F3 is displayed follow the F3 processing direction Correct to proper amount of refrigerant Check linear expansion valve Refer to 10 6 Error Code Abnormal point and detection method Case Judgment and action Compressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds Stop valve of outdoor unit is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of outdoor controller board Defective compressor Defective outdoor power circuit board Dip switch setting difference of outdoor controller circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Check indoor outdoor fan Solve short cycle Replace outdoor controller circuit board Note Before the replacement of the outdoor controller circuit board disconnect the wiring to compressor from the outdoor power circuit board and check the o
66. outdoor unit connecting wire Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Start up time over The unit cannot finish start up process within 4 minutes after power on OCH526B Contact failure of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire 33 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units Check diameter and length of indoor outdoor unit connecting wire Total wiring length 80m including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat cable is S1 S2 S3 Check the number of indoor units that are connected to one outdoor unit If EA is detected
67. procedure 9 4 Remove the side panel R Refer to procedure 9 5 Pull out the lead wire of high pressure switch and low pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch low pres sure switch and the pressure sensor 63HS Note When installing the high pressure switch cover it with a wet cloth to prevent it from heating 100 C or more then braze the pipes so that the inside of pipes are not oxidized 121 OCH526B Photo 8 1 High pressure Linear expansion Linear expansion switch 63H valve coil LEV C valve coil LEV A Linear expansion lt Ref check gt TH33 lt nn 4 way valve I Linear expansion valve coil LEV B 5 Low pressure switch 63L Linear expansion valve High pressure 4 way valve coil sensor 63HS 21S4 Photo 8 2 YHAR2 type High pressure Linear expansion switch 63H valve coil LEV A Linear expansion valves Thermistor lt Ref check gt TH33 4 way valve Linear expansion Low pressure switch 63L Linear expansion valve High pressure 4 way valve coil sensor 63HS 21S4 Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel OPERATING PROCEDURE PHOTOS 12 Removing the reactors ACL1 ACL2 ACL3 1 Sia the service ing See Photo 1 Photo 12 1 Electrical p
68. refrigerant systems SELEcTiIon and temperature displays flash 8 for 2 seconds and stop flashing this seems to be an error Check for noise source or interference around the transmission path Note If the operation is made incorrectly before completion finish operation by going to the step and restart from the step Set the indoor unit number Press the ON OFF button so that blinks in the unit number display area Unit number gpg display section N17 1 H Confirm the refrigerant address and unit number Press the MODE button to confirm the refrigerant address and unit number After a while will start to blink in the mode number display area l Mode number 00 00 display section e pie 88 will blink in the room temperature display area if the selected refrigerant address does not exist in the system Furthermore if F appears and blinks in the unitnumber display area andthe refrigerant address display area also blinks there are no units that corre spond to the selected unit number In this case the refrigerant address and unit number may be incorrect so repeat steps and to set the correct ones When the refrigerant address and unit number are confirmed by pressing the button the corresponding indoor unit will start fan operation This Select the mode number Press the IK TEM
69. that has no relation with abnormality source The unit of former address does not exist as address switch has changed while the unit was energized Extinction of transmission wire voltage and signal is caused by over range transmission wire e Maximum distance 200m e Remote controller line 12m Extinction of transmission wire voltage and signal is caused by type unmatched transmission wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS VVR VVF VCT Diameter 1 25mm2 or more Extinction of transmission wire voltage and signal is caused by over numbered units Accidental malfunction of abnormality detected controller noise thunder surge Defective of abnormality generated controller 2 If displayed address or attribute is outdoor unit indoor unit detects abnormality when indoor unit transmits signal to outdoor unit and there was no reply ACK Contact failure of transmission wire of outdoor unit or indoor unit Disconnection of transmission connector CN2M of outdoor unit Defective transmitting receiving circuit of outdoor unit or indoor unit If displayed address or attribute is indoor unit remote controller detects abnormality when remote controller transmits signal to indoor unit and there was no reply ACK OCH526B During group operation with indoor unit of multi refrigerant system if remote controller transmi
70. the OFF timer will be activated and the test run will automatically stop after 2 hours lt The room temperature display section shows the pipe temperature of indoor units during the test run e Check that all the indoor units are running properly in case of simultaneous twin operation Malfunctions may not be displayed regardless of incorrect wiring After turning on the power supply the system will go into startup mode PLEASE WAIT will blink on the display section of the room temperature and lamp green of the remote controller will flash As to INDOOR BOARD LED LED1 will be lit up LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0 LED3 will blink As to OUTDOOR BOARD LED LED1 green and LED2 red will be lit up After the startup mode of the system finishes LED2 red will be turned off In case OUTDOOR BOARD LED is digital display and will be displayed alternately every second lt If one of the above operations does not function correctly the causes written below should be considered Find causes from the symptoms The below symptoms are under test run mode startup in the table means the display status of x written above Symptoms in test run mode Remote Controller Display OU ee ee ED pap ay Remote controller displays PLEASE After startup is displayed only e After power is turned on PLEASE WAIT is displayed for 2 WAIT and cannot be operated green ligh
71. with the IF1 or F2 button and press the button Main menu 9 Sel 000 Select Remote controller check from the Service menu and press the but Remote controller check ton to start the remote controller check and see the check results w Start checking To cancel the remote controller check and exit the Remote controller check menu screen press the or the button fl CO The remote controller will not reboot itself Fl Fe F3 Fa4a_ Begin Y Remote controller check results screen OK No problems are found with the remote controller Check other parts for problems Remote controller check E3 6832 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission line and the Start checking other remote controllers NG ALLO ALL1 Send receive circuit fault Remote controller needs replacing ERC The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote controller and that of the data that was actually transmitted over the transmission line If data errors are found check the transmission line for external noise inter ference Begin Y Ng If the button is pressed after the remote controller check results are dis played remote controller check will end and the remote controller will automati cally reboot itself Check the remot
72. 1 L2 L3 Power Supply Record Reset Refrigerant Address MF1 MF2 Fan Motor TB U V W__ Connection Terminal U V W Phase SW4 Switch Test Operation 21S4 Solenoid Valve Four Way Valve TB L1 L2 L3 Connection Terminal SW5 Switch Function Switch Model Select 63H High Pressure Switch TB N Connection Terminal SW6 Switch Model Select gt 63L Low Pressure Switch X52CA B 52C Relay SW7 Switch Function Switch 63HS High Pressure Sensor N E Noise Filter Circuit Board SWw8 Switch Function Switch TH3 Thermistor Liquid LI LI2 LIS NI Connection Terminal L1 L2 L3 N Power Supply Sw9 Switch Function Switch TH4 Thermistor Discharge LO1 LO2 L03 NO Connection Terminal L1 L2 L3 N Power Supply SWP Switch Pump Down TH6 Thermistor 2 Phase Pipe GD1 GD3 _ Connection Terminal Ground CN31 Connector Emergency Operation TH7 Thermistor Ambient CONV B Converter Circuit Board CNDM Connector Connection for Option TH8 Thermistor Heat Sink L1 A1 IN Connection Terminal L1 Power Supply CN51 Connector Connection for Option TH32 Thermistor Suction L1 A2 OU _ Connection Terminal L1 Power Supply SV1 CH Connector Connection for Option TH33 Thermistor Ref check L2 A2 OU__ Connection Terminal L2 Power Supply ss Connector Connection for Option TH34 Thermistor Comp Surface L3 A2 OU Connection Terminal L3 Power Supply CNM Connector Connection for Option LEV A LEV B LEV C Linear Expansion Valve N IN Connection Terminal LED1 LED2 LED
73. 12YHAR2 BS UK PUHZ SHW140YHAR2 BS UK SW1 Stoo SW7 Demand control setting SW6 Model select SW4 Test operation SWP Pump down SW5 Function switch SW8 Pipe replace Wiring replace Manual defrost detect history record reset refrigerant address Input of low level sound priority mode O to Input of external contact point SW9 Function switch sz Anaka wae CNM H Connect to A control F er service tool En N CNMNT Connect to M NET adapter CN5 CNVMNT Connect to M NET adapter CND LEV A B C Linear expansion valve 63HS B is sss 63L Low pressure switch TH4 3 Thermistor a iang EN TH3 Thermistor lt Liquid gt Be TH7 6 gt Thermistor S lt Ambient 3 2 phase pipe gt TH32 Thermistor lt Suction gt TH33 Thermistor lt Ref check gt i Voltage between right pins of PC5C and PCS5D pin 3 and pin 4 Same as CNF1 Vsp Voltage between pins of C5A C5B DC O0V when stopped DC 1 6 5V oo ae when operated OCH526B CNF1 CNF2 Connect the fan motor 380V DC CNDC 280V 380 DC Outdoor power circuit board for SHW80 112V Noise filter circuit board for SHW112 140Y 4 SV DC DG 15V Bein stopped 7 5V DC When operated OV 15V Suse 62 CN51 External signal output e Compressor operat ing signal e Abnormal sig
74. 23 1 0 00 01 0101 1 0 0 1 00 24 0 1 00 02 1lolilolola 00 25 1 1 00 03 ol lololi 00 26 1 1 1 o0 0 1 00 27 olo oliloli 00 28 1lolo ilola 00 29 oli i loliloli 00 2A 1l loliloli 00 2B olo ililoli 00 2C 106 4 bola 00 2D olif 1f 1fo 1 00 2E 1 1 41 4 0 1 00 2F olo ololili 00 30 1 ofofo 1 1 00 31 o 1 oj oj 1 1 00 32 1 1 ofof1 1 00 33 olo ilolili 00 34 1lolilolili 00 35 olililolila 00 36 1lililolili 00 37 olo olili li 00 38 1 101 601 4141 00 39 olilolilila 00 3A 1lilolilili 00 3B olo ililili 00 3C 1lolililili 00 3D olililililai 00 3E 1lilililil i 00 3F 104 OCH526B Indoor unit Model setting information Request code 162 Data display 0 0 See the table on the right Indoor unit Capacity setting information Request code 163 Data display 0 0 See the table on the right Display Model setting state Display Model setting state 00 20 01 21 PKA RP FAL 2 02 22 PLA RP71 100BA2 03 23 04 24 05 25 06 26 07 27 08 28 09 29 OA 2A PLA ZRP35 125BA Ob 2b 0C 2C Od 2d 0E 2E OF 2F 10 30 11 31 12 32 13 33 14 34 PEAD RP JA L Q 15 35 16 36 17 37 PLA RP100BA3 140BA2 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Displ
75. 7 60 1m INC 60 UNIT a J we 50 3 2 INC 50 N u 1 5m x 40 J a NC 40 9 lt A F 3 F E T F 3 n 30 F T F F L a a L s L X NC 30 lt T T F F F o r GROUND gt HEARING FOR LLL lt F t FNG20 lt CONTINUOUS E x E 1 O NOISE 5 F F J O 10 T F F 5 F 1 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCH526B OUTLINES AND DIMENSIONS 6 mm gt lt I gt gt aQ Oo o E 00 N N L 3 A A 0 amp 6 VHA MHS 620 L VHA MHS eeg s lou ulesq 14 lt lt lt gt s z III NNN III 222 aaa PUHZ SHW140YHAR1 13409 Buldid seay JA09 Buidid juol4 noyoouy lou Buidid woyog BHuIAOW J04 a pueH YY jaued adidas Bun 1oopino io Bum Ajddns Jamog 497 uonoauuo BUIWA L opu 446r eujus yes 056 OLW log uonepunog S lou IPAO YE X Z Z Bieuosiq 1y 1883 UONETeISUT 009 OLW og uonepunoa s joy peyojou pedeys N Z y lul JIM IRAH 05EL BulAow 10 lpueH lt SYEIU JIM OPIS
76. CN31 Connector lt Emergency Operation gt TH7 Thermistor lt Ambient gt CONV B Converter Circuit Board CNDM Connector lt Connection for Option gt TH8 Thermistor lt Heat Sink gt L1 A1 IN Connection Terminal lt L1 Power Supply gt CN51 Connector lt Connection for Option gt TH32 Thermistor lt Suction gt L1 A2 OU _ Connection Terminal lt L1 Power Supply gt SV1 CH Connector lt Connection for Option gt TH33 Thermistor lt Ref check gt L2 A2 OU Connection Terminal lt L2 Power Supply gt ss Connector lt Connection for Option gt TH34 Thermistor lt Comp Surface gt L3 A2 OU __ Connection Terminal lt L3 Power Supply gt CNM Connector lt Connection for Option gt LEV A LEV B LEV C Linear Expansion Valve N IN Connection Terminal LEDA LED2 LED lt Operation Inspection Indicators gt ACLI ACL2 ACL3 ACL4 Reactor CK OU Connection Termina F1 F2 F3 F4 FUSE lt T6 3AL250V gt CY1 CY2 Capacitor X51 X52 X54 Relay When M NET adapter is connected 5 kal 4 CN5 WHT 4 412 32 51 5 1 34 5 ofS Sl TH7 6 TH3 TH4 63HS TH34 LEV A LEV B CNVMNT CNMNT s s YLWW BLK RED WHT WHT WHT RED WHT RED WHT WHT Soe No os E Sek B 08 pre SAE a feb WHT sE Ga CN4
77. Change refrigerant address or unit No Select mode No 02 room temperature detection position Select setting No 03 remote controller fixed Use and Example Selecting room temperature detection position Enter the setting Press End function display x Press and at the same time The above procedure must be carried out only if changes are necessary 86 OCH526B Operating Procedure Check the function selection settings Changing the function selection settings for each mode will change its relevant mode function Perform steps through to check all the function selection settings and then change the settings as necessary For the initial settings refer to the lt Table 1 gt in the chapter 12 1 The following is the procedure to operate the remote controller internal sensor Turn off the remote controller Hold down 2 buttons simultaneously for 2 seconds the FILTER and TEST buttons to set the modes 01 through 14 and the is C yand TEST buttons to set the modes 15 through 28 The BENGION will flash for a while and show as below Refrigerant address display section f the FUNCTION Set the outdoor address Press the CLOCK buttons C V D gt and A D to select the desired refrigerant address The refrigerant address changes from 00 to 15 This operation is not possible for single
78. Contrast Use to adjust screen contrast Clock setting is required OCH526B Continue to the next page 91 Setting and display items Setting details Initial setting Display Make the settings for the remote controller related items as necessary details Clock The factory settings are Yes and 24h format Temperature Set either Celsius C or Fahrenheit F Room temp Set Show or Hide Auto mode Set the Auto mode display or Only Auto display Auto mode Whether or not to use the AUTO mode can be selected by using the button This setting is valid only when indoor units with the AUTO mode function are connected Administrator The administrator password is required to make the settings for the following items password Timer setting Energy save setting Weekly timer setting Restriction setting Outdoor unit silent mode setting Night set back Language Use to select the desired language selection Service Test run Select Test run from the Service menu to bring up the Test run menu e Test run Drain pump test run Input Select Input maintenance Info from the Service menu to bring up the Maintenance information maintenance screen The following settings can be made from the Maintenance Information screen e Model name input Serial No input Dealer information input Function Make the settings for the indoor unit functions via the re
79. Crankcase heater W gt Heat exchanger Plate fin coil 5 Fan Fan drive x No Propeller fan x 2 9 Fan motor output kW 0 074 0 074 Airflow m min CFM 100 3 530 3 Defrost method Reverse cycle Noise level Cooling dB 51 Heating dB 52 Dimensions W mm in 950 37 3 8 D mm in 330 30 13 1 3 16 H mm in 1 350 53 1 8 Weight kg lb 134 295 Refrigerant R410A Charge kg lbs 5 5 12 1 Oil Model L 1 40 FV50S Pipe size O D Liquid mm in 9 52 3 8 Gas mm in 15 88 5 8 Connection method Indoor side Flared 5 Outdoor side Flared Between the indoor amp Height difference Max 30 m outdoor unit Piping length Max 75 m OCH526B Service Ret PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK Power supply phase cycle voltage Single 50 Hz 230V Max current A 29 5 35 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FJRMT Motor output kW 2 5 Starter type Inverter Protection devices HP switch LP switch Discharge thermo Comp surface thermo Crankcase heater w 2 Heat exchanger Plate fin coil 5 Fan Fan drive x No Propeller fan x 2 Q Fan motor output kW 0 074 0 074 E A
80. DBY is displayed on the screen This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later While STANDBY is displayed on the remote controller the airflow amount will be restricted because the indoor unit s heat exchanger is not fully heated up In addition to that the up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The up down vane will return to the setting specified by the remote controller when STANDBY is released DEFROST is displayed on the screen No air comes out of the unit OCH526B The outdoor unit gets frosted when the outside temperature is low and the humidity is high DEFROST indicates the DEFROST operation is being performed to melt this frost The DEFROST operation ends in around 10 minutes at most 15 minutes During the DEFROST operation the indoor unit s heat exchanger becomes cold so the fan is stopped The up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The display will turn into STANDBY when DEFROST operation ends 51 Phone Calls From Customers How to Respond The ro
81. F4 Fuse lt T6 3AL250V gt LEV A LEV B LEV C Linear Expansion Valve Record Reset Refrigerant Address gt X51 X52 X54 Relay LEV C When M NET adapter is connected 63H 63L LEV A LEVB M s a F 1 312 33 TH3 se CNF2 1 412 TH 2 TH76 TH3 TH4 63 YLW BLK RED WHT WHT WHT 1 3 HS RED 7 WHT 1 CN Wi 5 LEV A WHT M HT WHT ssoosososossssooo BaT 1 CNM 14 Il Hu ren ld ALL SW4SWP SW8 _ SW5 WHT aa HAHAHA Z 2 cyst CNDM cnag lB becco eoo eoo Siz BLK BLK co Joe DCL V WY LONN D m M NET ADAPTER amai SYMBOL
82. H4 80 C 80 C 2 phase pipe temperature TH6 50 C 5 C Ambient temperature TH7 35 C 7C Temperature difference code intake temperature set temperature Tj 5 5 Discharge superheat SHd 30deg Sub cool SC 5deg 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the thermistors to open short And the unit runs emegency operation with the values listed above 2 If one thermistor is set to open short the values for each will be different from the list above Example When liquid pipe temperature thermistor TH3 has an open or short circuit Thermistor Discharge superheat SHd Us at Cooling TH4 Testis Tc Te Ta Tb Heating TH4 Tess Td Tf TH6 Degree of subcooling SC Cooling Te3sHs TH3 Te 45 Heating TesHs TH2 Tf 45 Regard normal figure as effective data Tc Td Regard normal figure as effective data 5T 50 C 5 C 45 C Te Tf Regard normal figure as effective data 61 OCH526B s 10 9 TEST POINT DIAGRAM Outdoor controller circuit board lt CAUTION gt TEST POINTO is high voltage PUHZ SHW80VHA PUHZ SHW112VHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHA PUHZ SHW140YHA PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW1
83. H6 TH7 TH32 TH33 TH8 UE Open of pressure sensor Te3Hs E8 Indoor outdoor unit communication error Signal receiving error Outdoor unit E9 Indoor outdoor unit communication error Transmitting error Indoor unit Communication error other than outdoor unit Ed Communicaiton error between outdoor controller board and M NET board Serial communication error 2 Check the following items and cautions for emergency operation O Make sure that there is no abnormality in outdoor unit other than the above abnormalities Emergency operation will not be available when error code other than the above are indicated For emergency operation it is necessary to set the emergency operation switch SWE on indoor controller board Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the indoor unit Do not perform emergency cooling operation for more than 10 hours Neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure Turn the main power supply off Turn on the emerge
84. IL2 L3 IN1 N2 P1 P2 _U V_ and W shown in the diagram are not actually printed on the board TB N TB U TB V TB W Connect to the CK capacitor Connect to the compressor MC Voltage among phases 10V 400V AC s o Diode module DIP IPM TAB connector on X52CA Connect to the RS resistor TB L1 TB L2 g TB 3 gt Connect to the outdoor converter circuit board L1 OU L2 OU L3 OU 400V AC CN4 L3OUT L3IN Connect to the Detection of primary Connect to the Lead connect outdoor controller current Connect to outdoor converter circuit board CN4 the outdoor noise filter circuit board CN7 circuit board CNCT CN2 CN6 Connect to the outdoor controller circuit board CN2 Thermistor Power circuit board Transmitting lt Heat sink gt TH8 signal to the controller board 0 5V DC Zero cross signal 0 5V DC Not used 16V DC 16V DC 0 9 _0 0 6 0 0 66 OCH526B eet Outdoor converter circuit board PUHZ SHW112YHA PUHZ SHW112YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHA PUHZ SHW140YHAR1 PUHZ SHW140YHAR2 BS UK CK OU L1 IN N IN L1 A1 Connect to the CK capacitor Connect to the noise filter Connect to the ACL1 circuit board
85. IR p bed Screw lead wire Terminal cover 7 Loosen the clamp for lead wires on the separator 8 Remove an electrical parts box fixing screw 4 x 10 and x Compressor detach the electrical parts box by pulling it upward r MC The electrical parts box is fixed with 2 hooks on the left z and 1 hook on the right 113 OCH526B OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt 2 phase pipe gt TH6 and Photo 4 1 Thermistor thermistor lt Ambient gt TH7 Control bak lt 2 phase pipe gt TH6 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 9 Disconnect the connectors TH7 6 red on the controller circuit board in the electrical parts box Loosen 2 fasteners for lead wires in the electrical parts box 4 Loosen the clamp for lead wires in the rear of the electrical parts box 5 Pull out the thermistor lt 2 phase pipe gt TH6 and thermis tor lt Ambient gt TH7 from the sensor holder Note When replacing thermistor lt 2 phase pipe gt TH6 or thermistor lt Ambient gt TH7 replace it together Cable strap Controller circuit board C B Photo 4 2 s Lead wire of tT thermistor w lt Ambient gt TH7 an 5 Removing the thermistor lt Discharge gt TH4 and thermis tor lt Comp surface gt TH34 1 Remove the service panel See Photo 1 2 Disconnect the connector TH4 white and TH34 red on the contro
86. LO1 No Wai ts LI IN Li Al eae eae P poi ler CN7 Connect to the outdoor power circuit board CN7 maji epa fea Ti CAUTION z g 3 lt 2 DIP m Oe e O g HF L1 A2 L2 A2 L3 A2 L1 OU L2 OU L3 OU Connect to the ACL1 ACL2 ACL3 Connect to the outdoor power circuit board TB L1 L2 L3 67 OCH526B 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS T Functlon ot switches The black square m indicates a switch position Action by the switch operation ON OFF Switch No Function Effective timing When compressor is workin Forced defrost Start Normal in heating Operator 9 Abnormal history clear Clear Normal off or operating Refrigerant address When power supply ON setting Test run Operating F Under suspension Test run mode setting Heating Cooling Use of existing pipe Used Not used Always No function Separate indoor outdoor unit power supplies Not used When power supply ON Pump down Normal Under suspension Forced defrost should be done as follows Change the DIP SW1 1 on the outdoor controller board from OFF to ON Forced defrost will start by the above operation if all these conditions written below are satisfie
87. LO1 LO2 LO2 LO3 LO3 LO1 AC400V OUTPUT N IN Connect to the outdoor converter circuit board L1 IN ACL2 ACL3 OCH526B F C U C Outdoor power circuit board Brief Check of POWER MODULE e Usually they are in a state of being short circuited if they are bro PUHZ SHW80VHA ken Measure the resistance in the following points connectors etc PUHZ SHW112VHA If they are short circuited it means that they are broken 1 Check of POWER MODULE PUHZ SHW80VHAR2 BS UK Check of DIODE circuit PUHZ SHW112VHAR2 BS UK RHET S ILL1 R IN1 S N1 Check of IGBT circuit L2 N1 Check of INVERTER circuit PJ U LPJ LVI LPJ1W IN4 LUJ IN1 IV I IN1I IW Note The marks R S L1 L2 P IN1 JU V and W shown in the diagram are not actually printed on the board CN2 Connect to the outdoor controller circuit board CN2 CN4 1 5 Transmitting signal to outdoor controller circuit board 0 5 V DC Connect 1 the outdoor 2 5 Zero cross signal 0 5 V DC controller circuit board CN4 3 4 18 V DC 6 5 16 V DC 7 5 16 V DC N2 CN52C CNDC Power Connect to the smoothing 52C driving signal 280 380 V DC O module capacitor CB Connect to the outdoor Connect to the outdoor controller circuit board controller circuit
88. MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS SERVICE MANUAL R410A Outdoor unit Model Name PUHZ SHW80VHA PUHZ SHW112VHA PUHZ SHW112YHA PUHZ SHW140YHA Salt proof model PUHZ SHW80VHA BS PUHZ SHW112VHA BS PUHZ SHW112YHA BS PUHZ SHW140YHA BS Service Ref PUHZ SHW80VHA PUHZ SHW80VHAR2 UK PUHZ SHW112VHA PUHZ SHW112VHAR2 UK PUHZ SHW112YHA PUHZ SHW112YHAR1 PUHZ SHW112YHAR2 UK PUHZ SHW140YHA PUHZ SHW140YHAR1 PUHZ SHW140YHAR2 UK PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK Changes for the Better December 2013 No OCH526 REVISED EDITION B Revision e Added PUHZ SHW80 112VHAR2 BS UK and PUHZ SHW112 140YHAR2 BS UK in REVISED EDITION B e Some descriptions have been modified e Please void OCH526 REVISED EDITION A Note e This manual describes service data of the outdoor units only e ROHS compliant products have lt G gt mark on the spec name plate CONTENTS 4 TECHNICAL CHANGES mununaunsaasssanansanannanannan 2 2 REFERENCE MANUAL musnasauananasaasusannaansunsusnnan 2 3 SAFETY PRECAUTION masnssannnaasusnaasnsansssansuna 3 4 SPECIFICATIONS manaaaanaauananaananananaanasananasasasanaa 7 5 DATA masanuasnannsanassnsussnasassnanusnnasssnuasassusassusassssassuna 9 6 OUTLINES AND DIMENSIONS 10 Tin
89. MP ON COMP ON COMP ON x10 HOURS x100 TIMES CURRENT A Outdoor unit information ON OFF button Heat exchanger gt Comp discharge gt Outdoor ambient Display temperature temperature temperature OUTDOOR UNIT OUTDOOR UNIT OUTDOOR UNIT H EXC TEMP OUTLET TEMP OUTDOOR TEMP Indoor unit information fe if button Indoor room gt Heat exchanger gt Filter operating temperature temperature time Display INDOOR UNIT INDOOR UNIT INDOOR UNIT INLET TEMP H EXC TEMP FILTER USE H 6 Press the FILTER button to confirm the setting Display example for accumulated operating time ly ait Display gt 7 Blinking Waiting for response 1 1 After approx 12 340 hours 10 seconds 7 Data is displayed on the display at To check the data for each item repeat steps 5 to 7 8 To cancel maintenance mode press the TEST button for 3 seconds or press the MD ON OFF button E Refrigerant address Single refrigerant system Multi refrigerant system group control In the case of single refrigerant system the refrigerant address Up to 16 refrigerant systems 16 outdoor units can be con is 00 and no operation is required nected as a group by one remote controller To check or set the Simultaneous twin units belong to this category refrigerant addresses single refrigerant system 1 1 Twin Refrigerant Refrigerant Refri
90. Outdoor unit SW5 setting information Refer to 12 2 1 Detail Contents in Request Code _ 78 Outdoor unit SW6 setting information Refer to 12 2 1 Detail Contents in Request Code _ 79 Outdoor unit SW7 setting information Refer to 12 2 1 Detail Contents in Request Code _ 80 Outdoor unit SW8 setting information Refer to 12 2 1 Detail Contentsin Request Code _ 81 Outdoor unit SW9 setting information Refer to 12 2 1 Detail Contents in Request Code _ 82 Outdoor unit SW10 setting information Refer to 12 2 1 Detail Contents in Request Code 83 84 M NET adapter connection presence absence oe MOr ie _ 0001 Connected 85 86 87 88 89 Display of execution of replace wash operation ee Aa ba 90 Outdoor unit Microprocessor version information Examples Ver 5 01 0501 Ver Auxiliary information displayed after 91 Outdoorunit Microprocessor version information sub No version information _ Examples Ver 5 01 A000 A000 92 93 94 95 96 97 98 99 Displays postponement code is 100 Outdoor unit Error postponement history 1 latest Code displayed if no postponement code is present Displays postponement code is 101 Outdoor unit Error postponement history 2 previous Code displayed if no postponement code is present R Displays postponement code is 102 Outdoor unit Error postponement history 3 last but one Code displayed if no postponement code is present
91. P buttons V and CA to set the desired mode number Only the selectable mode numbers can be selected Select the setting content for the selected mode Press the MENU button The currently selected setting number will blink so check the currently set content Mode number display section nn nn UU LI LI Setting number display section Register the settings you have made in steps to Press the button The mode number and setting number will start to blink and registration starts Setting number 1 Indoor unit operating average Press the CLOCK buttons C gt and C D to indicate the indoor unit No in turn such as 00 02 03 04 AL Select the unit No to which the function selection applies nn n Uu u Z is To set modes 01 to 06 or 15 to 22 select unit number 00 To set modes 07 to 14 or 23 to 28 carry out as follows To set each indoor unit individually select 01 to 04 To set all the indoor units collectively select AL helps you find the location of the indoor unit for which you want to perform function selection However if 00 or AL is selected as the unit number all the indoor units corresponding to the specified refrigerant address will start fan operation Example When the refrigerant address is set to 00 and the unit number is 02 00 refrigerant address
92. S4 e Reactors ACL1 ACL2 ACL3 6 Remove the terminal cover and disconnect the compressor lead wire 7 Loosen the clamp for lead wires on the separator 8 Remove 2 electrical parts box fixing screws 4 x 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 3 Noise filter circuit Controller circuit board C B Electrical parts box board N F Electrical parts box fixing screw Terminal block TB1 118 OCH526B OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 4 Disassembling the electrical parts box 1 Disconnect all the connectors on the controller circuit Electrical board Photo 4 1 parts box 2 Remove the 3 screws screw O and that fix the plate equipped with the outdoor controller circuit board and the electrical parts box screw from the front and the screw and from the bottom of the electrical parts box See Photo 4 1 and 4 2 3 Slide the plate in the direction of the arrow A and remove it See Photo 4 1 4 Remove the lead wires from the clamp and the wire clip on the bottom of the electrical parts box See Photo 4 3 5 Remove the 3 screws screw and that fix the bottom Wore side of the electrical parts box and remove the bottom side r AN a FOR Screw plate by sliding in the direction of the arrow B See Photo 7 4 3 and 4 4 6 Remove the
93. Short Open Connector CN31 Emergency operation Start Normal When power supply ON 69 OCH526B Special function a Low level sound priority mode Local wiring Unit enters into Low level sound priority mode by external signal input setting Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual Adding a commercial timer or on off switch contactor setting to the CNDM connector which is optional contactor for demand input located on the outdoor controller board enables to control compressor operation frequency The performance depends on the load of conditioned outdoor temperature NOTE When the Dip SW 9 1 on the control board of the outdoor unit is ON set Dip SW9 1 to OFF How to wire lt Low level sound priority mode circuit gt Insulate this point securely as Adapter fi t this is not used aP orto cema signal input Outdoor unit Purchased locally PAC SC36NA E controller board I I I Relay gt 1 supply D 1 O sw I CNDM I SWI Switch a a X Relay Contact spec DC1mA Max 10 m including local wiring 1 Make the circuit as shown above with adapter for external signal input PAC SC36NA E 2 Turn SW1 to on for Low level sound priority mode Turn SW1 to off to release Low level sound priority mode and normal operation b On demand control Local wiring Demand control is available by external input In this
94. T RUN and current operation mode are displayed MODE Press the Zopa button to activate cou mode then check whether cool air is blown out from the unit ODI MODE Press the Zopa button to activate remi mode then check whether warm air is blown out from the unit Press the button and check whether strong air is blown out from the unit Press the button and check whether the auto vane operates properly Press the ON OFF button to stop the test run Note e Point the remote controller towards the indoor unit receiver while following steps to It is not possible to run in FAN DRY or AUTO mode 25 OCH526B 4 ON OFF N Je MITSUBISHI ELECTRIC 0 TEST RUN TEMP Oe KO MODE FAN AUTO STOP 5 e o VANE AUTO START IN CHECK LOUVER mm lt TEST RUN RESET CLOCK 10 3 HOW TO PROCEED SELF DIAGNOSIS 10 3 1 Self diagnosis lt PAR 31MAA gt Select Service from the Main menu and press the button wy Select Self check with the or button and press the button 000 Service menu V2 Test run Input maintenance info Function setting Check gt Self check Main menu 9 ie J Fl F2 F3 F4 With the or button enter the refrigerant address an
95. WIRING DIAGRAM masnunnunassnanannasasassassssassasans 12 8 WIRING SPECIFICATIONS itt 17 9 REFRIGERANT SYSTEM DIAGRAM 18 10 TROUBLESHOOTING mununannaunnaaaasnanannanasnnanan 20 11 FUNCTION SETTING munnsunnsaunnnasanaaaanananasannn 82 12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 95 13 EASY MAINTENANCE FUNCTION 106 14 DISASSEMBLY PROCEDURE 113 PARTS CATALOG OCB526B Mir SM 1 TECHNICAL CHANGES PUHZ SHW80VHA PUHZ SHW112VHA gt PUHZ SHW112YHAR1 gt PUHZ SHW140YHAR1 gt PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK e Controller circuit board C B has been changed PUHZ SHW112YHA gt PUHZ SHW140YHA gt PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 e Power circuit board P B has been changed 2 REFERENCE MANUAL INDOOR UNIT SERVICE MANUAL 2 1 FOR AIR TO WATER SYSTEM Model name Service ref Service manual No EHST20C VM6HB EHST20C YM9HB EHST20C TM9HB EHST20C VM2B EHST20C VM6B EHST20C YM9B EHST20C VM6EB EHST20C YM9EB EHST20C VM6SB EHPT20X VM2HB EHPT20X VM6HB EHPT20X YM9HB EHPT20X TM9HB EHPT20X VM6B EHPT20X YM9B EHST20C VM6HB UK EHST20C YM9HB UK EHST20C TM9HB UK EHST20C VM2B UK EHST20C VM6B UK EHST20C YM9B UK EHST20C VM6EB UK EHST20C YM9EB UK EHST20C VM6SB UK EHPT20X VM2HB UK EHPT20X VM6HB UK
96. YMBOL NAME T 313421 TB7 Terminal Block lt M NET connection gt CN7 CN6 CN5 CN2 CN5 Connector lt Transmission gt WHT WHT RED ae CND Connector lt Power Supply gt BLK CN2M Connector lt M NET communication gt X52CB a a a S 2 P yp TB2 sl SA gt S2 1 MODEL SELECT INDOOR z The black square m indicates 3 5 a switch position MODEL SW6 ON 00 OFF Ll 1 6 CNAC1 eo 112Y 7 WaT 1 SW5 6 2 AA ON TB1 Gah OFF H HH HA Uu 123456 RED MODEL POWER WHT nn o nl SB SUPPLY 12345678 400V 50Hz ELK 140Y SW5 6 x2 ON BLU OFF d HA HUB 123456 2 SW5 1 to 5 Function Switch fea lt Fa ACL4 2 s TIT 7 3 Ambient temp of ZUBADAN FI The black square W indicates a switch position lash Injection becomes effective Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 ON ON ON ON 3 C or less OFF HH 0 C or less OFF Hg 3 C or less oFF AAS 6 C or less OFF HHAH Initial setting 1234 1234 1234 1234 4 SW9 1 to 2 Function Switch OCH526B 14 PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK TH33 TH32 TH7 TH6 SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt
97. ained out for once The display of wireless remote controller gets dim or does not come on The indoor unit doesn t receive a signal from remote controller at a long distance OCH526B Batteries are being exhausted Replace them and press the reset button of remote controller 54 10 6 HOW TO CHECK THE PARTS PUHZ SHW80VHA PUHZ SHW112VHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHA PUHZ SHW140YHA PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK Parts name Check points Thermistor TH3 Disconnect the connector then measure the resistance with a tester lt Liquid gt At the ambient temperature 10 C 30 C Thermistor TH4 lt Discharge gt Normal Abnormal Thermistor TH6 TH4 160 KQ 410 kQ lt 2 phase pipe gt TH3 Thermistor TH7 TH6 lt Ambient gt e A an Thermistor TH8 4 3 KQ 9 6 KQ pen or sno lt Heatsink gt TH32 SHW112 140YHA only TH33 Thermistor TH32 TH34 lt Suction gt Thermistor TH33 TH8 39 KQ 105 kQ lt Ref check gt Thermistor TH34 lt Comp surface gt Fan motor Refer to next page MF1 MF2 Solenoid valve coil Measure the resistance between the terminals with a tester lt Four way valve gt At the ambient temperature 20 C 2154 Normal Abnormal 1435 150 Q Open or short Motor for compressor Measure the resistance between the ter
98. al data After reset the data please turn pin of CN31 and SW4 1 to original OFF position lt Caution gt 1 On the following condition the operation cannot be stabillized and judgment of cheking operation may not be accurate a Outdoor temperature 40 C or Room temperature 23 C b Air flow setting is not High notch 2 Please check the operation and unit status when the operation is not stabilized after more than 45 minutes 112 OCH526B 14 DISASSEMBLY PROCEDURE PUHZ SHW80VHA PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHA PUHZ SHW112VHAR2 BS UK OPERATING PROCEDURE PHOTOS amp ILLUSTRATION Top panel fixing screws 1 Removing the service panel and top panel Photo 1 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service SSY Service panel panel Z as fixing screw 2 Remove screws 2 for front 3 for rear 5 x 12 of the top i D Fan grille panel and remove it Grille A Top panel fixing _ lt Service panel screws Slide Li Grille fixing screws gt Service panel fixing screws 2 Removing the fan motor MF1 MF2 Photo 2 1 Photo 2 2 Fan 1 Remove the service panel See Photo 1 Propeller Front panel Fan motor fixing screws motor 2 Remove the top panel See Photo 1 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille Top and bottom See Photo 1 4 R
99. al has DC 24 V against S2 terminal However between S3 and S1 these terminals are NOT electrically insulated by the transformer or other device Notes 1 Wiring size must comply with the applicable local and national codes 2 Power supply cables and the cables between Interface unit Flow temp controller and outdoor unit shall not be lighter than polychloroprene sheathed flexible cables Design 60245 IEC 57 3 Be sure to connect the cables between Interface unit Flow temp controller and outdoor unit directly to the units no intermediate connections are allowed Intermediate connections may result in communication errors If water enters at the intermediate connection point it may cause insufficient insulation to ground or a poor electrical contact If an intermediate connection is necessary be sure to take measures to prevent water from entering the cables 4 Install an earth longer than other cables 5 Do not construct a system with a power supply that is turned ON and OFF frequently Power supply Isolator 3 poles isolator S1 S1 l Indoor unit Outdoor Unit 52 i S2 Interface unit J Flow temp controller I 3 3 A Warning In case of A control wiring there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line Therefore please turn off the
100. and ascertain the cause of the Not displayed trouble according to 10 5 Troubleshooting of problems Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise and etc Re check the symptom and check the installation environment refrigerant amount weather when the trouble occurred matters related to wiring and etc Reset error code logs and restart the unit after finishing service There is no abnormality in electrical component controller board remote controller and etc The trouble is not reoccurring Re check the abnormal symptom Conduct trouble shooting and ascertain the cause of the trouble according to 10 5 Troubleshooting of problems Continue to operate unit for the time being if the cause Not logged is not ascertained There is no abnormality concerning of parts such as electrical component controller board remote controller and etc 10 2 CHECK POINT UNDER TEST RUN 10 2 1 Before test run 1 Before test run e After installation of indoor and outdoor units piping work and electric wiring work re check that there is no refrigerant leakage loosened connections and incorrect polarity e Measure impedance between the ground and the power supply terminal block L N on the outdoor unit by 500V Megger and check that it is 1 0MQ or over e Do not use 500V Megger to indoor outdoor
101. arts box 2 Remove the top panel See Photo 1 3 Remove the 6 screws that fix the front panel and remove the front panel 4 Remove the 2 screws screw and both 4 x 10 that fix the separator screw from the valve bed and screw from the bottom of the separator and tilt the separator to the side of the fan motor slightly See Photo 12 1 5 Disconnect the lead wires from the reactor and remove the 4 screws screw 49 that fix the reactor to remove the reac tor See photo 12 3 a l h en Note 1 The reactor is very heavy 4kg Be careful when handling it Note 2 The reactor box is also removable Photo 12 2 1 4 F w AK A kar 4 T Y pan r pani f 7 Reactor box Separator Screw Reactor box Reactors Photo 12 3 Photo 12 2 2 YHAR2 type Reactor box Reactors Screw 122 OCH526B 3 Remove 2 cover panel front fixing screws 5 x 12 and remove the cover panel front See Photo 3 4 Remove 2 cover panel rear fixing screws 5 x 12 and remove the cover panel rear 5 Remove the electrical parts box See Photo 3 6 Remove the valve bed Refer to procedure 9 7 Remove the side panel R Refer to procedure 9 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Remove the soundproof cover for compressor 10 Recover refrigerant 11 Remove the welded pipe of compressor inlet and outlet then remove th
102. arts if the parts are defective Replace outdoor controller circuit board Indoor outdoor unit connector miswiring excessive number of units 4 units or more 1 Outdoor controller circuit board can automatically check the number of connected indoor units Abnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as 4 units or more Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 4 or more indoor units are connected to one outdoor unit Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Outdoor controller circuit board can automatically set the unit number of indoor units Abnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring converse wiring or disconnection of indoor
103. as Air to water stage c Check operating condition of refrigerant circuit Check linear expansion valve Check water piping Check water pump stage a e penwccoccnece O Ji sara jar aia kan jaja sir ja a Ambient te 5 mperature TH7 C stage a stage c stage d stage e stage f stage g Tcond 63 61 60 59 57 51 Pipe temperature lt Cooling mode gt Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range Indoor pipe temperature TH2 or TH5 room temperature TH1 lt 3 C TH Lower temperature between liquid pipe temperature and condenser evaporator temperature lt Heating mode gt When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished the unit is detected as abnormal when condenser evaporator pipe temperature is not in heating range within 20 minutes Note 3 It takes at least 27 minutes to detect abnormality Note 4 It excludes the period of defrosting Detection restarts when defrosting mode is over Heating range 3 C S Condenser Evaporator temperature TH5 room temperature TH1 O Slight temperature differ
104. ase repeat the same procedure as when Initial learning operation for Checking operation Press CLOCK CG button and select the GAS LEAK JUDGE Refrigerant leakage detection Refrigerant leakage initial teaching detection judgment GAS LEAK GAS LEAK TEST START JUDGE Press CILTER button to confirm Display LOADING I Display Z N 0 Waiting for response Loading Judgment Display C indication Meaning setting 0 Refrigerant leakage is less than 20 of initial condition 20 Refrigerant leakage is more than 20 of initial condition 8888 Error No initial data is available lt Note gt for judgment can be changed by Unit function setting of remote controller Selectable either 80 initial setting or 60 Refer to Mode No 21 on lt Table 1 gt Function selections in ch 11 1 When the for judgment is changed please start Initial learning O about 1 minute and cancel Then please start Judgment of refrigerant leakage mode 0 0 lt How to reset the initial condition data gt When the unit is removed and installed again or refrigerant is charged additionally the Initial learning must be performed again by following procedure 1 Turn Main Power OFF 2 Connect the pin of CN31 to ON position on the outdoor controller board 3 Turn SW4 1 on the outdoor controller board to ON 4 Turn Main Power ON to reset the initi
105. at SHd at time of error 0 255 ie 119 Sub cool SC at time of error 0 130 C 120 Compressor Operating frequency at time of error 0 255 Hz 121 Outdoor unit at time of error 0 10 Step Fan output step 122 Outdoor unit at time of error j f 0 9999 jini Fan 1 speed Only for air conditioners with DC fan 123 Outdoor unit at time of error 0 9999 ipin O is displayed if the air conditioner is a single Fan 2 speed Only for air conditioners with DC fan fan type 124 125 LEV A opening at time of error 0 500 Pulses 126 LEV B opening at time of error 0 500 Pulses 127 128 129 Pressure saturation temperature TesHs at time of error 39 88 Cc 130 Thermo ON time until operation stops due to error 0 999 Minutes 131 132 Indoor Liquid pipe temperature at time of error 39 88 c Average value of all indoor units is displayed if the air condi tioner consists of 2 indoor units twin 133 Indoor Cond Eva temperature at time of error 39 88 c Average value of all indoor units is displayed if the air condi tioner consists of 2 indoor units twin 134 Indoor at time of error 39 88 c Intake air temperature lt Thermo judge temperature gt 135 136 137 138 139 140 146 147 148 149 150 Indoor Actual intake air temperature 39 88 Ko 151 Indoor Liquid pipe temperature 39 88 G 152 Indoor Cond Eva temperature 39 88 C OCH526B 99
106. ation remote controller beep sound is supply ON heard however unit does not start Local remote controller operation is prohibited Normal operation operating Remote controlling adaptor is connected to CN32 on the indoor controller board Local remote controller operation is prohibited by centralised controller etc since it is connected to MELANS Factor of No 2 Check the phenomena of No 2 Remote controller display works Refrigerant shortage If refrigerant leaks discharging normally and the unit performs temperature rises and LEV opening cooling operation however the increases capacity cannot be fully obtained Inspect leakage by checking the The air does not cool well temperature and opening Filter clogging Check pipe connections for gas leakage Open suction grille and check the filter Clean the filter by removing dirt or dust on it Heat exchanger clogging If the filter is clogged indoor pipe temperature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pressure e Clean the heat exchanger Air duct short cycle Remove the blockage Remote controller display works Linear expansion valve fault Discharging temperature and indoor heat normally and the unit performs Opening cannot be adjusted well due to linear exchanger temperature does not rise heating operation however the expansion valve fault Inspect the failure by
107. ay Capacity setting state Display Capacity setting state 00 12 10 112 01 16 11 125 02 22 12 140 03 25 13 04 28 14 05 32 15 06 35 36 16 07 40 17 08 45 18 09 50 19 0A 56 1A Ob 63 1b 0C 74 1C Od 80 1d OE 90 1E OF 100 1F Wireless pair No indoor control board side setting Request code 165 Data display 0 0 OCH526B See the table on the right Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42 disconnected 13 EASY MAINTENANCE FUNCTION 13 1 SMOOTH MAINTENANCE 13 1 1 PAR 31MAA Maintenance data such as the indoor outdoor unit s heat exchanger temperature and compressor operation current can be displayed with Smooth maintenance This cannot be executed during test operation Depending on the combination with the outdoor unit this may not be supported by some models Select Service from the Main menu and press the Q button D Check menu 1 1 Error history Refrigerant volume check Refrigerant leak check gt Smooth maintenance Select Check with the F1 or F2 button and press the button Request code Service menu wy Select Smooth maintenance with the or button and press the m button Seteachitem Smooth maintenance b Ref address E Select the item to be chan
108. board b When RC NG is displayed replace remote controller c When RC E3 or ERC 00 66 is displayed noise may be causing abnormality Indoor outdoor unit communication error Signal receiving error Outdoor unit Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes Contact failure of indoor outdoor unit connecting wire Defective communication circuit of outdoor controller circuit board Defective communication circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire Check disconnection or looseness of indoor outdoor unit connecting wire of indoor or outdoor units Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again Indoor outdoor unit communication error Transmitting error Outdoor unit Abnormal if 0 receiving is detected 30 times continuously though outdoor controller circuit board has transmitted 1 Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes Indoor outdoor unit connecting wire has contact failure Defective communication circuit of outdoor controller circuit board Noise has entered power supply Noise has entered indoor outdoor unit connecting wire Check disconnection or looseness of indoor outdoor
109. c heating is displayed under the automatic mode is running OFF Only Automatic is displayed under the automatic mode Function selection flowchart Setting language English Change Language Normal display Display when the air conditioner is not running Hold down the button and press the button for 2 seconds Remote controller function selection mode English German Spanish Russian Italian Chinese French Japanese 3 w Function selection OFF Mode selection Display not il le IIT TE OL By Ini TEMP EAT MODE TINUT TEMP AUTO MODE OHTROLLE MAIN ONTROLL ad fe FF OFF I N ISF MODE EMP De ETTIHG G OF 1 mode setting OCH526B H i Aura made i O O J OFF 94 Hold down the button and press the button for 2 seconds Press the operation mode button Press theTIMER MENU button Press the TIMER ON OFF button a Dot display AS MITSUBISHI ELECTRIC LANGUAGE Ox 2 O n cope pn oso
110. ch 2 a a ITI m A a 3 Ambient temp of ZUBADAN Flash Injection becomes effective The black square indicates a switch position Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 Ambient temp SW9 3 4 4 x ON ON ON ON 3 C or less OFF Hoki 0 C or less oFF HHP 3 C or less oFF ARB 6 C or less OFF HBA Initial setting 1234 1234 1234 1234 4 SW9 1 to 2 Function Switch OCH526B 13 PUHZ SHW112YHAR1 PUHZ SHW140YHAR1
111. charge temperature Request code b Ref address E Request code 04 Request a L 0 Request code gt Ref address E Request code 884 6 9 69 C Request 4 lt Operation state gt Request code 0 je 4 Relay output state 1 Operation mode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d Defrost OCH526B 2 Relay output state Display Power ey Compressor Four way valve Solenoid valve supplied to compressor 0 1 ON 2 ON 3 ON ON 4 ON 5 ON ON 6 ON ON 7 ON ON ON 8 ON A ON ON 95 12 1 2 PAR 21MAA Turn on the Monitoring the operation data NA aAa MITSUBISHI ELECTRIC Example Request code 004 Discharge temperature 69 C Mitr ETAT E Refrigerant address 00 ON OFF 7 Dha 30388 OMENU OON OFF Rall N FILTER seat CHECK TEST 1 A Maintenance mode CY D Sp C B Refrigerant address PAR 21MAA 6 C Data display area a W gt ee 2 i D Request code display area 1 Press the TEST button for 3 seconds so that Maintenance mode appears on the screen at 2 Press the CHECK button for 3 seconds to switch to Maintenance monitor Note It is not possible to switch to Maintenance monitor during data request in maintenance mode i e wh
112. cover refrigerant 7 Remove the welded part of 4 way valve Note When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized Removing linear expansion valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the valve bed Refer to procedure 8 4 Remove the side panel R Refer to procedure 8 5 Remove the linear expansion valve coil 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 10 Removing the high pressure switch 63H the low pres sure switch 63L and the pressure sensor 63HS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the valve bed Refer to procedure 8 4 Remove the side panel R Refer to procedure 8 5 Pull out the lead wire of high pressure switch and low pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch low pres sure switch and the pressure sensor 63HS Note When installing the high pressure switch cover it with a wet cloth to prevent it from heating 100 C or more then braze the pipes so that the inside of pip
113. ctive outdoor controller board Defective action of linear expansion valve Clogging with foreign objects in refrigerant circuit Clogging occur in the parts which become below freezing point when water enters in refrigerant circuit In the case of the unit does not restart Detection temp of thermistor TH34 2 95 C Check intake superheat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is fully open Turn the power off and check if U3 is displayed when the power is turned on again When U3 is displayed refer to Judgement and action for U3 Check linear expansion valve Refer to 10 6 After recovering refrigerant remove water from entire refrigerant circuit under vacuum more than 1 hour Open short circuit of outdoor unit temperature thermistor TH4 TH34 Abnormal if open 3 C or less or short 217 C or more is detected during compressor operation Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting TH4 Thermistor lt Discharge gt TH34 Thermistor lt Comp surface gt OCH526B Disconnection or contact failure of connectors TH4 TH34 on the outdoor controller circuit board Defective thermistor Defective outdoor controller circuit board 34 Check connection of connector TH4 TH34 on the outdoor controller circuit board Check breaking of the
114. d e Heat mode setting e 10 minutes have passed since compressor started operating or previous forced defrost finished Pipe temperature is less than or equal to 8C Forced defrost will finish if certain conditions are satisfied Forced defrost can be done if above conditions are satisfied when DIP SW1 1 is changed from OFF to ON After DIP SW1 1 is changed from OFF to ON there is no problem if DIP SW1 1 is left ON or changed to OFF again This depends on the service conditions When the air to water system is used up to 6 refrigerant address 0 to 5 can be assigned 68 OCH526B The black square m indicates a switch position Type of Action by the switch operation Switch Switch lt Function ON OFF Effective timing No function Power failure automatic recovery Auto recovery No auto recovery When power supply ON No function Model select Following SW5 6 reference Setting of demand SW7 1 SW7 2 Demand switch ON control OFF OFF 0 Operation stop i ON OFF 50 OFF ON 75 Defrost Hz setting Defrost Hz x 0 54 Normal No function No function Defrost setting For high humidity Normal No function Function switch Valid Normal SW9 3 Ambient temp Starting Ambient temp OFF lt 3 C Initial setting of flash injection OFF lt 0 C ON lt 3 C ON lt 6 C
115. d temperature are displayed by turns Outdoor outside temperature TH7 39 88 39 88 When the temperature is OC or less and temperature are displayed by turns Outdoor heatsink temperature TH8 40 200 40 200 When the temperature is 0 C or less and temperature are displayed by turns When the thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Discharge superheat SHd 0 255 ele matas Heating THA4 Te6sHs 0 255 When the temperature is 100 C or more hundreds digit tens digit and ones digit are displayed by turns Number of defrost cycles 0 FFFE 0 FFFE in hexadecimal notation When more than FF in hex 255 in decimal the number is displayed in order of 16 s and 16 s and 16 s and 16 s places Example When 5000 cycles 0 5 secs 0 5 secs 9 gt C4 A 2 secs 2 cycles Input current of outdoor unit 0 500 When it is 100 or more hundreds digit tens digit and ones digit are displayed by turns LEV B opening pulse 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns OCH526B U9 error detail history latest 77 Description Display Normal 00 Overvoltage error 01 Undervoltage err
116. d press the button Self check Ref address D Select Y Address Error code unit number attribute will appear will appear if no error history is available Self check Ref address B Error 4 Unt 1 Grp IC Return 9 When there is no error history Self check M NET address Error Unt Grp Return x Reset Resetting the error history Press the F4 button Reset on the screen that shows the error history NG A confirmation screen will appear asking if you want to delete the error history yr Press the F4 button OK to delete the error history If deletion fails Request rejected will appear Unit not exist will appear if no indoor units that are correspond to the entered address are found Navigating through the screens To go back to the Main menu To return to the previous screen 26 OCH526B Self check Ref address 6 Delete error history Self check Ref address 8 Error history deleted Return 10 3 2 Remote controller check lt PAR 31MAA gt If operations cannot be completed with the remote controller diagnose the remote controller with this function Select Service from the Main menu and press the button Service menu 2 2 Maintenance password gt Remote controller check Select Remote controller check
117. dgment and action Remote controller transmission error E3 signal receiving error E5 Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit Error code E3 Remote controller receives transmitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Error code E3 Abnormal if indoor controller board could not find blank of transmission path Error code E5 Indoor controller board receives transmitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Error code E5 2 remote controller are set as main In case of 2 remote controllers Remote controller is connected with 2 indoor units or more Repetition of refrigerant address Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board Noise has entered into transmission wire of remote controller Set a remote controller to main and the other to sub Remote controller is connected with only one indoor unit The address changes to a separate setting Diagnose remote controller a When RC OK is displayed remote controllers have no problem Turn the power off and on again to check When becoming abnormal again replace indoor controller
118. e compressor 12 Remove the 3 points of the compressor fixing nut using a spanner or a adjustable wrench Note Recover refrigerant without spreading it in the air OPERATING PROCEDURE PHOTOS 13 Removing the compressor MC 1 Remove the service panel See Photo 1 Photo 13 2 Remove the top panel See Photo 1 Separator Valve bed Compressor MC Compressor fixing nut 14 Removing the power receiver 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the cover panel front Refer to procedure 13 4 Remove the cover panel rear Refer to procedure 13 5 Remove the electrical parts box See Photo 3 6 Remove the valve bed Refer to procedure 9 7 Remove the side panel R Refer to procedure 9 8 Recover refrigerant 10 Remove 2 receiver leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air 123 OCH526B 9 Remove 4 welded pipes of power receiver inlet and outlet Photo 14 Pipes of power receiver ANG i Receiver leg Receiver a fixing screws Mir SUMI MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2012 MITSUBISHI ELECTRIC CORPORATION Distributed in Dec 2013 No OCH526 REVISED EDITION B Distributed in Jul 2013 No OCH526 REVISED EDITION A Distributed in Sep 2012 No OCH526 Made in Japan New publicatio
119. e controller display and see if anything is displayed including lines Nothing will appear on the remote controller display if the correct voltage 8 5 12 VDC is not supplied to the remote con troller If this is the case check the remote controller wiring and indoor units 27 OCH526B 10 3 3 Self diagnosis lt PAR 21MAA gt Ifa problem occurs in the air conditioner the indoor and outdoor units will stop and the problem is shown in the remote controller display CHECK and the refrigerant address are displayed on the temperature display and the error code and unit number are displayed alternately as shown below If the outdoor unit is afa MITSUBISHI ELECTRIC malfunctioning the unit number will be 00 ON OFF In the case of group control for which one remote controller controls ji TEMP multiple refrigerant systems the refrigerant address and error code of WIS the unit that first experienced trouble i e the unit that transmitted 5 C sia the error code will be displayed ae To clear the error code press the ON OFF button yerunena Jasa Alternating Display CHECK CHECK 257 S ae a N on i nn TIS LILI LILI Error code 2 or 4 digits Address 3 digits or unit number 2 digits When using
120. e transmission path and other controllers SELFCHMECK 9 S SELF CHECK ERL j m The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmission path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path t When the number of data errors is 02 Transmission data from remote controller nin on Transmission data on transmission path To cancel remote controller diagnosis Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp will blink After approximately 30 seconds the state in effect before the diagnosis will be restored 29 OCH526B 10 3 6 Self diagnosis lt Wireless remote controller gt lt ln case of trouble during operation gt When a malfunction occurs to air conditioner both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop lt Malfunction diagnosis method at maintenance service gt CHECK display ON OFF button CHECK button ON OFF ate MITSUBISHI ELECTRIC pO MODE aea FAN AUTOSTOP s eO VANE AUTOSTAR S CHECK LOUVER l h aaa ESTRUN SET min RESET CLOCK OCH526B GIH
121. efer to procedure 8 7 Remove the side panel R Refer to procedure 8 8 Recover refrigerant 9 Remove 4 welded pipes of power receiver inlet and outlet 10 Remove 2 receiver leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air 117 OCH526B Photo 10 Pipes of power receiver wm TANG SEL 2 pd et B E pr K t 4 r M 7 B Power receiver S MBA Receiver leg Receiver leg fixing screws PUHZ SHW112YHA PUHZ SHW140YHA OPERATING PROCEDURE PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel 2 Remove screws 2 for front 3 for rear 5 x 12 of the top panel and remove it 2 Removing the fan motor MF1 MF2 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille Top and bottom See Photo 1 4 Remove a nut for right handed screw of M6 to detach the propeller Top and bottom See Photo 2 1 5 Disconnect the connectors CNF1 CNF2 on controller cir cuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 20 to detach the fan motor Top and b
122. ely 3 minutes Operation has stopped to protect the out door unit m Is the on timer set Press the ON OFF button to stop operation m s the FTC connected to a external signal Consult the concerned people who control the FTC m Does appear in the remote controller display Consult the concerned people who control the FTC m Has the auto recovery feature from power failures been set Press the ON OFF button to stop operation m s the off timer set Press the ON OFF button to restart operation m s the air conditioner connected to a central remote controller Consult the concerned people who control the FTC m Does appear in the remote controller display Consult the concerned people who control the FTC m Are timer settings invalid If the timer can be set WEEKLY SIMPLE _ or AUTO OFF appears in the remote controller display m The initial settings are being performed Wait approximately 3 minutes m f the remote controller is not only for FTC change it An error code appears in the remote controller display m The protection devices have operated to protect the FTC and outdoor unit Do not attempt to repair this e uipment by yourself Turn off the power switch immediately and consult your dealer e sure to provide the dealer with the model name and information that appeared in the remote controller display e If the unit cannot be operated properly after test run refer to the foll
123. emove a nut for right handed screw of M6 to detach the propeller Top and bottom See Photo 2 1 5 Disconnect the connectors CNF1 CNF2 on controller cir cuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 20 to detach the fan motor Top and bottom See Photo 2 2 7 Loosen the clamp for lead wires on the motor support Fan motor fixing screws 3 Removing the electrical parts box Photo 3 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 Controller circuit board 9 Disconnect the indoor outdoor connecting wire and the C B power supply wire from terminal block 4 Disconnect the connector CNF1 CNF2 LEV A LEV B f oT a a Electrical and LEV C on the controller circuit board alti parts box lt Symbols on the board gt a e CNF1 CNF2 Fan motor Z Pa a Electrical e LEV A LEV B LEV C LEV TI parts box 5 Disconnect the pipe side connections of the following parts e Thermistor lt Liquid gt TH3 e Thermistor lt Discharge gt TH4 e Thermistor lt 2 phase pipe gt TH6 e Thermistor lt Ambient gt TH7 e Thermistor lt Suction gt TH32 e Thermistor lt Ref check gt TH33 e Thermistor lt Comp surface gt TH34 e High pressure switch 63H e Low pressure switch 63L e High pressure sensor 63HS 4 way valve coil 2154 6 Remove the terminal cover and disconnect the compressor Terminal block TB1 ER
124. emperature 17 30 Cc 31 Indoor unit Intake air temperature lt Thermo judge temperature gt 8 39 Cc 32 Indoor unit Intake air temperature Unit No 1 8 39 c O is displayed if the target unit is not present lt Heat mode 4 deg correction gt 33 Indoor unit Intake air temperature Unit No 2 8 39 c t lt Heat mode 4 deg correction gt 34 Indoor unit Intake air temperature Unit No 3 8 39 c t lt Heat mode 4 deg correction gt 35 Indoor unit Intake air temperature Unit No 4 8 39 c f lt Heat mode 4 deg correction gt 36 37 Indoor unit Liquid pipe temperature Unit No 1 39 88 Cc o is displayed if the target unit is not present 38 Indoor unit Liquid pipe temperature Unit No 2 39 88 iG t 39 Indoor unit Liquid pipe temperature Unit No 3 39 88 Cc t 40 Indoor unit Liquid pipe temperature Unit No 4 39 88 t 41 42 Indoor unit Cond Eva pipe temperature Unit No 1 39 88 Cc 0 is displayed if the target unit is not present 43 Indoor unit Cond Eva pipe temperature Unit No 2 39 88 Cc t 44 Indoor unit Cond Eva pipe temperature Unit No 3 39 88 c t 45 Indoor unit Cond Eva pipe temperature Unit No 4 39 88 C t 46 47 48 Thermo ON operating time 0 999 Minutes 49 Test run elapsed time 0 120 Minutes lt Not possible to activate maintenance mode during the test run OCH526B 97
125. ence between indoor room temperature and pipe lt liquid or condenser evaporator gt temperature thermistor e Shortage of refrigerant e Disconnected holder of pipe lt liquid or condenser evaporator gt thermistor e Defective refrigerant circuit Converse connection of extension pipe on plural units connection Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of indoor room temperature and pipe lt condenser evaporator gt temperature thermistor Stop valve is not opened completely Check pipe lt liquid or condenser evaporator gt temperature with room temperature display on remote controller and outdoor controller circuit board Pipe lt liquid or condenser evaporator gt temperature display is indicated by setting SW2 of outdoor controller circuit board as follows Temperature display of indoor condenser evaporator pipe Indoor 1 1 2 3 4 5 6 Conduct temperature check with outdoor controller circuit board after connecting A Control Service Tool PAC SK52ST Temperature display of indoor liquid pipe Indoor 1 ON OFF Temperature display of indoor con evaporator pipe Indoor 2 1 2 3 4 5 6 Temperature display of indoor liquid pipe Indoor 2 ON OFF A Control Service Tool SW2 setting Check converse connection of extension pipe or converse wiring of indoor outdoor unit connectin
126. ent 00 is displayed in case of no postponement Code display Error code history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error thermistor display When there is no error thermistor is displayed 3 Liquid pipe temperature TH3 4 Discharge pipe temperature TH4 6 2 phase pipe temperature TH6 7 Ambient temperature TH7 8 Heatsink temperature TH8 32 Suction pipe temperature TH32 34 Comp surface temperature TH34 Code display Operation frequency on error occurring 0 255 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 5 secs 0 5secs 2 secs i gt 25 gt Fan step on error occurring 0 10 OCH526B 78 The black square m indicates a switch position SW2 setting Display detail Explanation for display LEV A opening pulse on error occurring 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 130 pulse 0 5 secs 0 5secs 2 secs i gt 30 Indoor room temperature TH1 on error occurring 8 39 Indoor pipe temperature Liquid TH2 39
127. ent breaking Abnormality of current sensor P B Abnormality of power module Check if stop valves are open Check looseness disconnection and converse connection of compressor wiring Measure resistance values among terminals on compressor using a tester Check if outdoor unit has a short cycle on its air duct 5 blinking Open short of outdoor thermistors TH4 TH34 Open short of outdoor thermistors TH3 TH32 TH33 TH6 TH7 and TH8 Check if connectors TH3 TH32 TH33 TH4 TH34 and TH7 6 on outdoor controller board and connector CN3 on outdoor power board are not disconnected Measure resistance value of outdoor thermistors 6 blinking Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor thermistor TH8 7 blinking Abnormality of voltage Check looseness disconnection and converse connection of compressor wiring Measure resistance value among terminals on compressor using a tester Check if power supply voltage decreases Check the wiring of CN52C Check the wiring of CNAF 1 blinking Abnormality of room temperature thermistor THA Abnormality of pipe temperature thermistor Liquid TH2 Abnormality of pipe temperature thermistor Condenser Evaporator Check if connectors CN20 CN21 CN29 and CN44 on indoor controller board are not disconnected Measure r
128. er of the indoor unit and press the __ button By setting unit number with the ia button specified indoor unit starts performing fan operation Detect which unit is assigned to which number using this function If unit number is set to AL all the indoor units in same refrigerant system start performing fan operation simultaneously If a unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the unit number setting If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the unit number setting Select a mode Press the temp button to set a mode Press 24 to turn on the function that raises the set temperature by 4 degree during heat operation Direct the wireless remote controller toward the sensor of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the current setting number Current setting number 1 1 beep one second 2 2 beeps one second each 3 3 beeps one second each If a mode number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the mode number If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the mode number Select the setting number Press the temp button to select the
129. erature are displayed by turns Comp surface thermistor TH34 52 221 52 221 When the temperature is 0C or less and temperature are displayed by turns When the discharge thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 C 0 5 secs 0 5secs 2 secs 1 05 gt U9 error details To be shown while Description Display error call is deferred Normal 00 Overvoltage error 01 Undervoltage error 02 Input current sensor error L phase open error Abnormal power synchronous signal 08 PFC IGBT error SHW80 112V Code Undervoltage 20 display e Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0A L phase open error 04 PFC IGBT error 20 24 04 81 OCH526B 11 FUNCTION SETTING 11 1 UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller The setting of function for each unit can only be done by the remote controller Select function available from the table 1 lt Table 1 gt Function selections 1 Functions are available when setting the unit number to 00 Select 00 referring to setting the indoor unit number Function Settings Mode No Setting No
130. es are not oxidized Photo 7 1 High pressure Linear expansion Linear expansion switch 63H valve coil LEV C valve coil LEV A Linear expansion lt Ref check gt TH33 4 way valve LA Linear expansion valve coil LEV B 5 Low pressure switch 63L Linear expansion valve a u x f _ High pressure 4 way valve coil sensor 63HS 21S4 Photo 7 2 VHAR2 type High pressure Linear expansion Linear expansion switch 63H valve coil LEV C valve coil LEV A Linear expansion valves Thermistor lt Ref check gt TH33 4 way valve Linear expansion Q valve coil LEV B Low pressure switch 63L Linear expansion valve High pressure 4 way valve coil sensor 63HS 21S4 Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel 115 OCH526B 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See Photo 3 Removing the reactor 4 Remove 4 reactor fixing screws 4 x 10 and remove the reactor OPERATING PROCEDURE PHOTOS 11 Removing the reactor DCL and capacitor CB Photo 8 1 Remove the service panel See Photo 1 Reactor Electrical parts box a Reactor DCL 3 Remove 2 cover panel front fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 cover panel rear fixing screw
131. es digit are displayed by turns Example When 125Hz 0 5 secs 0 5secs a gt 25 gt 2 secs LEV A opening pulse 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 pulse 0 5 secs 0 5secs a gt 50 gt 2 secs Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Operation mode on error occurring OCH526B Operation mode of when operation stops due to error is displayed by setting SW2 like below SW2 ON 123456 74 Code display The black square m indicates a switch position SW2 setting Display detail Explanation for display Pipe temperature Liquid TH3 on error 40 90 occurring When the coil thermistor detects 0 C or below 40 90 and temperature are displayed by turns Example When 15 C 0 5 secs O 5secs 2 secs gt 15 gt 00 Discharge temperature TH4 on error 3 217 occurring When the temperature is 100 C or more the 3 217 hundreds digit tens digit and ones digit are displayed by turns Example When 130 C 0 5 secs O 5secs 2 secs 1 gt 30 gt
132. esired setting from ON and OFF Use to set the amount of ventilation Select a desired setting from Off Low and High High power Use to reach the comfortable room temperature quickly e Units can be operated in the High power mode for up to 30 minutes Timer On Off timer Use to set the operation On Off times Time can be set in 5 minute increments Auto Off timer Use to set the Auto Off time Time can be set to a value from 30 to 240 in 10 minute increments Weekly timer Use to set the weekly operation On Off times Up to eight operation patterns can be set for each day Not valid when the On Off timer is enabled OU silent mode Use to set the time periods in which priority is given to quiet operation of outdoor units over temperature control Set the Start Stop times for each day of the week Select the desired silent level from Normal Middle and Quiet Restriction Temp range _ Use to restrict the preset temperature range Different temperature ranges can be set for different operation modes Operation Use to lock selected functions lock The locked functions cannot be operated Energy Auto return Use to get the units to operate at the preset temperature after performing energy save saving operation for a specified time period Time can be set to a value from 30 and 120 in 10 minute increments This function will not be valid when the preset tem
133. esistance value of indoor thermistors 2 blinking Abnormality of drain sensor DS Float switch connector open FS Indoor drain overflow protection Check if connector CN31 CN4F on indoor controller board is not disconnected Measure resistance value of indoor thermistors Measure resistance value among terminals on drain pump using a tester Check if drain pump works Check drain function 3 blinking Freezing cooling overheating heating protection Check if indoor unit has a short cycle on its air duct Check if heat exchanger and filter is not dirty Measure resistance value on indoor and outdoor fan motors Check if the inside of refrigerant piping is not clogged 4 blinking Abnormality of pipe temperature Error code displayed on remote controller Refer to service manual for indoor unit OCH526B Check if indoor thermistors TH2 and THS5 are not disconnected from holder Check if stop valve is open Check converse connection of extension pipe on plural units connection Check if indoor outdoor connecting wire is connected correctly on plural units connection 72 lt Outdoor unit operation monitor function gt When optional part A Control Service Tool PAC SK52ST is connected to outdoor controller board CNM Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by c
134. etected Note The address and attribute displayed at remote controller indicate the controller that detected abnormality There are 2 or more same address of controller of outdoor unit indoor unit FRESH MASTER or LOSSNAY Noise has entered into transmission signal and signal was transformed Search the unit with same address as abnormality occurred If the same address is found turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more after the address is corrected and turn the power on again Check transmission waveform or noise on transmission wire Hard ware error of transmission processor Transmission processor intended to transmit 0 but 1 appeared on transmission wire Note The address and attribute display at remote controller indicate the controller that detected abnormality Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit indoor unit FRESH MASTER or LOSSNAY are done or polarity is changed with the power on and transmission data collides each other Defective transmitting receiving circuit of transmission processor Transmission data is changed by the noise on transmission If the works of transmission wire is done with the power on turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or mo
135. follow the action to be taken for U4 Check resistance value of TH8 or tempera ture by microprocessor TH8 Refer to 10 6 SW2 on A Control Service Tool Refer to 10 10 Replace outdoor power circuit board Replace outdoor controller circuit board Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition Outdoor stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Check compressor referring to 10 6 Replace outdoor power circuit board Too low superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected less than or equal to 15C for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes Disconnection or loose connection of discharge temperature thermistor TH4 Defective holder of discharge temperature thermistor Disconnection or loose connection of linear expansion valve s coil Disconnection or loose connection of linear expansion valve s connector Defective linear expansion valve Check the installation conditions of
136. g wire Abnormal refrigerant circuit During Cooling Dry or Auto Cooling operation when the following are regarded as failures when detected for one second a The compressor continues to run for 30 or more seconds b The liquid pipe temperature or the condense evaporator temperature is 75 C or more These detected errors will not be cancelled until the power source is reset OCH526B Abnormal operation of 4 way valve Disconnection of or leakage in refrigerant pipes Air into refrigerant piping Abnormal operation no rotation of indoor fan Defective fan motor Defective indoor control board Defective refrigerant circuit clogging 40 When this error occurs be sure to replace the 4 way valve Check refrigerant pipes for disconnection or leakage After the recovery of refrigerant vacuum dry the whole refrigerant circuit Refer to section 10 6 Check refrigerant circuit for operation To avoid entry of moisture or air into refrigerant circuit which could cause abnormal high pressure purge air in refrigerant circuit or replace refrigerant lt M NET communication error gt Error Code Abnormal point and detection method Note Indoor unit in the text indicates M NET board in outdoor unit Case Judgment and action Address duplicate definition This error is displayed when transmission from the units of same address is d
137. ge with If address of abnormality source is the address that should not exist there is the unit that memorizes nonexistent address information Delete useless address information with manual setting function of remote controller Only the system FRESH MASTER or LOSSNAY are connected to or the system that is equipped with group setting of different refrigerant system If there was no trouble with O above replace the controller board of displayed address or attribute If the unit does not return normally multi controller board of outdoor unit may be defective repeater circuit Replace multi controller board one by one to check if the unit returns normally Continue to the next page From the previous page Error Code Abnormal point and detection method Case Judgment and action 4 If displayed address or attribute is remote controller indoor unit detects abnormality when indoor unit transmits signal to remote controller and there was no reply ACK During group operation with indoor unit of multi refrigerant system if indoor unit transmit signal to remote controller while outdoor unit power supply of one refrigerant system is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiv
138. ged with the F1 or F2 button Stable mode ETN Heat Normal Select the required setting with the F3 or F4 button Begin V Address mu lt Ref address gt setting 0 15 u lt Stable mode gt setting Cool Heat Normal Smooth maintenance Press the Q button Fixed operation will start Ref address m Stable mode Note Stable mode will take approx 20 minutes EN Heat Normal Stabilization Collecting Exit The operation data will appear GEGE D Ref address Cool The Compressor Accumulated operating COMP run time is 10 hour unit and COMP current 12A the Compressor Number of operation times COMP On Off is a 100 time eoe nms meon Ho unit fractions discarded COMP frequency 88 Hz Return v Page A Smooth maintenance 2 3 Ref address B Cool Sub cool 3 G OU TH4 temp 68 C OU TH6 temp 38 C OU TH7 temp 38 C Return 3 R Smooth maintenance 3 3 Navigating through the screens mees 0 Gad a a lU air temp 28 C To go back to the Main menu IU HEX temp ia C e To return to the previous screen Iis EBS os Return 106 OCH526B 13 1 2 PAR 21MAA Reduces maintenance work drastically Enables you to check operation data of the indoor and outdoor units by remote controller Furthermore use of maintenance stable operation control that fixes the operati
139. gerant Refrigerant Refrigerant Refrigerant address address address address address 00 address 00 Outdoor unit Outdoor unit Indoor unit 01 Remote controller 15 Outdoor unit Indoor unit 01 02 Outdoor unit Indoor unit 01 01 Outdoor unit Indoor unit 01 00 Outdoor unit Indoor unit 01 Remote controller Indoor unit 01 Remote controller Indoor unit 02 108 OCH526B 13 3 GUIDE FOR OPERATION CONDITION S mu s Check Points a l5 Breaker Good Retightened 3 u Terminal block Outdoor Unit Good Retightened 5 se Indoor Unit Good Retightened Insulation resistance MQ Voltage V Com Accumulated operating time Time pressor Number of ON OFF times Times Current A e Refrigerant heat exchanger temperature COOL C HEAT 8 Refrigerant discharge temperature COOL C HEAT 5 a Air outside air temperature COOL lt HEAT S e Air discharge temperature COOL C HEAT Appearance Good Cleaning required 9 5 y Heat exchanger Good Cleaning required Sound vibration None Present o Air intake air temperature COOL C HEAT Cc z Air discharge temperature COOL C HEAT C _ a Refrigerant heat exchanger temperature COOL C HEAT C Filter operating time Time S Decorative panel Good Cleaning reguired g Filter Good Clean
140. he up down vane will be set to horizontal blow and the setting cannot be changed by remote controller 1 At the beginning of the HEAT operation 2 While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate 3 During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released STANDBY will be displayed on the remote controller in case of 1 and 2 DEFROST will be displayed on the screen in case of 3 The airflow direction does not change Up down vane left right louver 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner does not have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed The air conditioner starts operating even though any buttons on the remote controller are not pressed Check if you set ON OFF timer The air conditioner starts operating at the time designated if ON timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of exter
141. high discharging temperature high comp surface temperature shortage of refrigerant Open short of outdoor unit thermistors TH4 TH34 Open short of outdoor unit thermistors TH3 TH32 TH33 TH6 TH7 and TH8 Abnormal temperature of heatsink Abnormality of power module Abnormality of superheat due to low discharge temperature Abnormality in outdoor fan motor Overheat protection Compressor overcurrent interruption When Comp locked Inspection unit Outdoor unit Current sensor error Indoor unit 1 Abnormal low pressure 63L operated Indoor unit 2 Compressor overcurrent interruption Abnormality of indoor units Abnormality of refrigerant Communication error of M NET system Contents to be inspected When power is turned on 63L connector red is open 63H connector yellow is open 2 connectors 63H 63L are open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4 units or more Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Startup time over Communication error except for outdoor unit OCH526B SW2 setting Display detail The black square m indicates a switch position Explanation for dis
142. ile is blinking since no buttons are operative Operating the service inspection monitor appears on the screen at when Maintenance monitor is activated The display at now allows you to set a request code No 3 Press the TEMP buttons C _ and _A_ to select the desired refrigerant address Screen WL gt fl lt lt gt 4 Press the CLOCK buttons C gt and _ D to set the desired request code No 5 Press the FILTER button to perform data request The requested data will be displayed at in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatically even if the data changes To display the updated data carry out step 4 again Canceling the Monitoring the operation data 6 While Maintenance monitor is displayed press the CHECK button for 3 seconds to return to maintenance mode 7 To return to normal mode press the ON OFF button 96 OCH526B 12 2 REQUEST CODE LIST Note Certain indoor outdoor combinations do not have the request code function therefore no request codes are displayed 8 ie Y Request content pesenptio
143. ing Vane No 2 set ting Optional humidifier Not supported PLA only Supported Vane differential setting No 1 setting TH5 24 28 in heating mode No 2 setting Standard TH5 28 32 C cold wind prevention No 3 setting TH5 32 38 C Not available PLA Swing Available Set temperature in heating Available Swing Wave air flow Temperature correction Valid mode 4 deg up Not available re Temperature correction Invalid Fan speed when the Extra low heating thermostat is OFF Stop DO J PO ro Od IPO J PO o PO PO Oo Po o PO N J Set fan speed HEN Fan speed when the Set fan speed cooling thermostat is OFF Stop Pola N Detection of east of Available the pipe temperature P8 Not available PKA FAL HAL KAL 2 deg up Mode No 11 Setting No Settings PLA BA 2 3 Vane No 3 setting No Vanes Less smudging Downward position than the standard Vane No 1 setting Standard Vane No 2 setting Be careful of the smudge on ceil lt Table 1 gt External static pressure Setting No Mode No 08 Mode No 10 Factory setting Less draft Upward position than the standard ing Initial setting 35Pa 50Pa 70Pa a OCH526B 83 11 1 1 Selecting functions using the wired re
144. ing circuit of indoor unit or remote controller If displayed address or attribute is FRESH MASTER indoor unit detects abnormality when indoor unit transmits signal to FRESH MASTER and there was no reply ACK During sequential operation of indoor unit and FRESH MASTER of other refrigerant system if indoor unit transmits signal to FRESH MASTER while outdoor unit power supply of same refrigerant system with FRESH MASTER is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of indoor unit or FRESH MASTER Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER Defective transmitting receiving circuit of indoor unit or FRESH MASTER If displayed address or attribute is LOSSNAY indoor unit detects abnormality when indoor unit transmits signal to LOSSNAY and there was no reply ACK If the power supply of LOSSNAY is off indoor unit detects abnormality when it transmits signal to LOSSNAY During sequential operation of indoor unit and LOSSNAY of other refrigerant system if indoor unit transmits signal to LOSSNAY while outdoor unit power supply of same refrigerant system with LOSSNAY is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of indoor unit of LOSSNAY Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving
145. ing required Fan Good Cleaning reguired 5 Heat exchanger Good Cleaning required Sound vibration None Present The filter operating time is the time that has elapsed since the filter was reset Normal Check item Normal operation state toot Heat Filter inspection Filter may be clogged clogged Inspection A Performance has dropped Detailed in spection is necessary Inspection B Refrigerant amount is dropping Inspection C Filter or indoor heat exchanger may be Note The above judgement is just guide based on Japanese standard conditions It may be changed depending on the indoor and outdoor temperature Itmay be judged as filter inspection due to the outdoor and indoor temperature even though it is not clogged OCH526B 109 Enter the temperature differences between and into the graph given below Operation state is determined according to the plotted areas on the graph For data measurements set the fan speed to Hi before activat ing maintenance mode Classification Inspection Is D000 displayed stably on the remote Stable Unstable controller Temperature Discharge temperature Outdoor c O difference heat exchanger temperature Indoor intake air temperature c Indoor heat exchanger temperature Inspection Is D000 displayed stably on the remote Stable Unstable co
146. ion guide that corresponds to the locked button will not appear lt Main display gt lt Main menu gt 14 38 Fri Main Main menu 1 3 gt Vane Louver Vent Lossnay High Room 28c pou Cool Set temp Auto Weekly timer OU silent mode x Li IRo Re Function guide 6 ON OFF lamp Press to turn ON OFF the indoor unit 2 SELECT button Press to save the setting 3 RETURN button Press to return to the previous screen 4 MENU button This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error Function button Main display Press to change the operation mode Main menu Press to move the cursor down Function button F2 Press to bring up the Main menu S Backlit LCD Operation settings will appear When the backlight is off pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen Main display Press to decrease temperature Main menu Press to move the cursor up Function button F3 Main display Press to increase temperature Main menu Press to go to the previous page Function button When the backlight is off pressing any button turns the backlight on and does not perform its function except for the ON OFF button 89 OCH526B
147. ircuit board in the electrical parts box Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 side panel R fixing screws 5 x 12 in the rear of the unit then remove the side panel R 5 Remove the 4 way valve coil 6 Recover refrigerant 7 Remove the welded part of 4 way valve Note When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 10 Removing linear expansion valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 9 Remove the valve bed Refer to procedure 9 4 Remove the side panel R Refer to procedure 9 5 Remove the linear expansion valve coil 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 120 C or more then braze the pipes so that the inside of pipes are not oxidized 11 Removing the high pressure switch 63H the low pres sure switch 63L and the pressure sensor 63HS 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the valve bed Refer to
148. irflow m min CFM 100 3 530 3 Defrost method Reverse cycle Noise level Cooling dB 50 51 Heating dB 51 52 Dimensions W mm in 950 37 3 8 D mm in 330 30 13 1 3 16 H mm in 1 350 53 1 8 Weight kg Ib 120 265 Refrigerant R410A Charge kg Ib 5 5 12 1 Oil Model 1 40 FVC68D Pipe size O D Liquid mm in 9 52 3 8 Gas mm in 15 88 5 8 Connection method Indoor side Flared 5 Outdoor side Flared Between the indoor amp Height difference Max 30 m outdoor unit Piping length Max 75 m Service Ref PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK Power supply phase cycle voltage 3phase 50Hz 400V Max current A 13 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FJQMT Motor output kW 2 5 Starter type Inverter Protection devices HP switch LP switch Discharge thermo Comp surface thermo E Crankcase heater W gt Heat exchanger Plate fin coil 5 Fan Fan drive x No Propeller fan x 2 9 Fan motor output kW 0 074 0 074 E Airflow m min CFM 100 3 530 3 Defrost method Reverse cycle Noise level Cooling dB 51 Heating dB 52 Dimensions W mm in 950 37 3 8 D mm in 330 30 13 1 3 16 H mm in 1 350 53 1 8 Weight kg lb 134 295 Refrigerant R410A Charge kg Ib 5 5 12 1 Oil Model L 1 40 FVC68D Pipe size O D Liquid mm in 9 52 3 8 Gas mm in 15 88 5 8 Connection method Indoor side Flared t Outdoor side Flared
149. k for transmission wire TB3 and terminal block for central control TB7 is not connected Check transmission waveform or noise on transmission wire Communication error with communication processor Defective communication between unit processor and transmission processor Note The address and attribute display at remote controller indicate the controller that detected abnormality OCH526B Data of transmission processor or unit processor is not transmitted normally because of accidental trouble such as noise or thunder surge Address forwarding from unit processor is not transmitted normally because of defective transmission processor hardware 41 Turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again System returns normally if abnormality was accidental malfunction If the same abnormality generates again abnormality generated controller may be defective Error Code Abnormal point and detection method Case Judgment and action NO ACK signal 1 Transmitting side controller detects abnormal if a message was transmitted but there is no reply ACK that a mes sage was received Transmitting side detects abnormality every 30 seconds 6 times continuously Note The address and attribute displayed at remote controller indicate the controller that did not reply ACK Common factor
150. l F2 F3 F4 000 Select Error history with the F1 or F2 button and press the Q button Check menu 1 1 b Error history Refrigerant volume check Refrigerant leak check Smooth maintenance Request code Service menu Error history Select Error history from the Check menu and press the Q button to view up to 16 error history records Four records are shown per page and the top record on the first page indicates the latest error record Error history 1 8 Error Unt ddimm yy E 8 1 12 04 08 12 34 E 8 1 12 84 88 12 34 E 8 1 12 84 88 12 34 E 8 1 12 84 88 12 34 Check menu W Page A mie O Fl F2 F3 F4 Deleting the error history To delete the error history press the F4 button Delete on the screen that shows error history A confirmation screen will appear asking if you want to delete the error history Press the F4 button OK to delete the history g Error history deleted will appear on the screen Press the button to go back to the Check menu screen 23 OCH526B Error history Delete error history Error history Error history deleted Check menu 9 10 2 3 Test run for wired remote controller lt PAR 21MAA gt TEST RUN and the currently selected Operating procedures While the room temperature display on the remote ti d displa
151. late Heat Exchanger MWA2 38PA MITSUBISHI 5 lt Reference gt Outlet water temperature thermistor For flow temp controller System example Liquid pipe temperature thermistor For flow temp controller 18 OCH526B 9 1 REFRIGERANT COLLECTING PUMP DOWN When relocating or disposing of the indoor outdoor unit pump down the system following the procedure below so that no refriger ant is released into the atmosphere Turn off the power supply circuit breaker Connect the low pressure valve on the gauge manifold to the charge plug low pressure side on the outdoor unit Close the liquid stop valve completely Supply power circuit breaker e When power is supplied make sure that CENTRALLY CONTROLLED is not displayed on the remote controller If CEN TRALLY CONTROLLED is displayed the refrigerant collecting pump down cannot be completed normally e Start up of the indoor outdoor communication takes about 3 minutes after the power circuit breaker is turned on Start the pump down operation 3 to 4 minutes after the power circuit breaker is turned on Perform the refrigerant collecting operation cooling test run e Push the pump down SWP switch push button type on the control board of the outdoor unit The compressor and ventilators indoor and outdoor units start operating refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit
152. ll Monitor 4 Address 0o00 When data collection from the indoor units is completed the current settings appears highlighted Non highlighted items indicate that no function settings are made Screen appearance varies depending on the Unit No setting Function setting Ref address 8 Grp 1 4 gt Mode 1 J 2 3 Mode 2 1 3 Mode 3 1 amp 3 Mode 4 1 2 3 Request Use the F1 or F2 button to move the cursor to select the mode number and change the setting number with the F3 or F4 button Function setting _ Ref address 8 Unit 1 1 4 gt Mode 7 2 3 Mode 8 1 8 3 Mode 9 1 8 3 Mode 11 1 2 3 Request NZ OO When the settings are completed press the button to send the setting data from the remote controller to the indoor units When the transmission is successfully completed the screen will return to the Function setting screen Note Make the above settings only on Mr Slim units as necessary The above function settings are not available for the City Multi units Table 1 summarizes the setting options for each mode number Refer to the indoor unit Installation Manual for the detailed information about ini tial settings mode numbers and setting numbers for the indoor units Be sure to write down the settings for all functions if any of the initial settings has been changed after the com
153. ller circuit board in the electrical parts box 3 Loosen clamps for lead wires on the separator See Photo 5 Loosen 3 fasteners and the cable strap for lead wires in Thermistor Photo 5 lt Comp Surface gt Thermistor TH34 lt Suction gt TH32 Muffler it I Clamp Wi the electrical parts box sensor 63HS 4 Pull out the thermistor lt Discharge gt TH4 from the sensor D holder Separator a Removing the thermistor lt Comp surface gt TH34 5 Remove the sound proof cover upper for compressor Compressor 6 Pull out the thermistor lt Comp surface gt TH34 from the MC holder of the compressor shell Thermistor lt Discharge gt TH4 6 Removing the thermistor lt Liquid gt TH3 thermistor Photo 6 Clamp Thermistor lt Suction gt TH32 and thermistor lt Ref check gt TH33 for TH3 lt Liquid gt 1 Remove the service panel See Photo 1 TH3 2 Disconnect the connectors TH3 white and TH32 black TH33 yellow on the controller circuit board in the electri cal parts box 3 Loosen clamps for lead wires on the separator See Photo 5 Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 4 Loosen clamp for the lead wire for TH3 5 Pull out the thermistor lt Liquid gt TH3 thermistor lt Suction gt TH32 and thermistor lt Ref check gt TH33 from the sen sor holder TH32 See Photo 5 TH33 See Photo 7 Thermistor P
154. minals with a tester MO Winding temperature 20 C U Normal Abnormal 80 112VHA 112 140YHA R1 112 140YHAR2 0 188 Q 0 302 Q 0 305 Q Open or short Linear expansion valve Disconnect the connector then measure the resistance with a tester LEV A LEV B LEV C Winding temperature 20 C O Gray Orange Normal Abnormal Yellow Open or short Black 46 30 Red Gray Black Gray Red Gray Yellow Gray Orange Solenoid valve coil Measure the resistance between the terminals with a tester lt Bypass valve gt At the ambient temperature 20 C SV Normal Abnormal 1197 109 Open or short 55 OCH526B Check method of DC fan motor fan motor outdoor controller circuit board Notes High voltage is applied to the connecter CNF1 2 for the fan motor Pay attention to the service Do not pull out the connector CNF1 2 for the motor with the power supply on It causes trouble of the outdoor controller circuit board and fan motor Self check Symptom The outdoor fan cannot turn around Fuse check Check the fuse F5 on outdoor controller board Did the fuse blow 4 No Wiring contact check Contact of fan motor connector CNF1 2 Replace outdoor controller board C B kaa gs and fan motor MF1 2 v Is the
155. mistor thermistor lt Ambient gt TH7 Controlbog 7 phase pipe TH6 Cable strap Controller circuit board C B Photo 5 2 Lead wire of AAAA thermistor lt Ambient gt TH7 Sensor holder 6 Removing the thermistor lt Discharge gt TH4 and thermis tor lt Comp surface gt TH34 1 Remove the service panel See Photo 1 2 Disconnect the connector TH4 white and TH34 red on the controller circuit board in the electrical parts box 3 Loosen clamps for lead wires on the separator See Photo 5 Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 4 Pull out the thermistor lt Discharge gt TH4 from the sensor holder Removing the thermistor lt Comp surface gt TH34 5 Remove the sound proof cover upper for compressor 6 Pull out the thermistor lt Comp surface gt TH34 from the holder of the compressor shell Photo 6 Thermistor lt Comp Surface gt Thermistor TH34 lt Suction gt TH32 HE Muffler a H High pressure sensor 63HS 7 Removing the thermistor lt Liquid gt TH3 thermistor lt Suction gt TH32 and thermistor lt Ref check gt TH33 1 Remove the service panel See Photo 1 2 Disconnect the connectors TH3 white and TH32 black TH33 yellow on the controller circuit board in the electrical parts box 3 Loosen clamps for lead wires on the separator See Photo 5 Loosen 3 fasteners and the cable s
156. mote controller lt PAR 31MAA gt lt Service menu gt Maintenance password is required Select Service from the Main menu and press the button At the main display the menu buttom and select Service to make the maintenance setting Main Main menu 3 3 Maintenance Initial setting b Service Main display 5 Cursor A 4 Page P When the Service menu is selected a window will appear asking for the pass word To enter the current maintenance password 4 numerical digits move the cursor to the digit you want to change with the or button g Set each number 0 through 9 with the F3 or F4 button Then press the button Note The initial maintenance password is 9999 Change the default password as necessary to prevent unauthorized access Have the password available for those who need it If you forget your maintenance password you can initialize the password to the default password 9999 by pressing and holding the F1 and F2 buttons simultaneously for three seconds on the maintenance password setting screen Service menu Enter maintenance password 999 Select Y 66 Ct If the password matches the Service menu will appear The type of menu that appears depends on the connected indoor units type Note Air conditioning units may need to be stopped to make certain set tings
157. mote controller as necessary setting Check Error history Display the error history and execute delete error history Refrigerant leak check Refrigerant leaks can be judged Smooth maintenance The indoor and outdoor maintenance data can be displayed Request cord Details of the operation data including each thermistor temperature and error his tory can be checked Self check Error history of each unit can be checked via the remote controller Maintenance Take the following steps to change the maintenance password password Remote When the remote controller does not work properly use the remote controller checking function controller to troubleshoot the problem check OCH526B 92 11 2 FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode Change the setting when needed Item 1 Item 2 Item 3 Setting content 1 Change language Language setting to display CHANGE LANGUAGE Display in multiple languages is possible 2 Function limit 1 Operation function limit setting operation lock LOCKING FUNCTION e Setting the range of operation limit operation lock FUNCTION SELECTION 2 Use of automatic mode setting SELECT AUTO MODE Setting the use or non use of automatic operation mode 3 Temperature range limit setting LIMIT TEMP FUNCTION e Setting the te
158. mperature adjustable range maximum minimum 3 Mode selection 1 Remote controller main sub setting CONTROLLER MAIN SUB MODE SELECTION Selecting main or sub remote controller When 2 remote controllers are connected to 1 group 1 controller must be set to sub 2 Use of clock setting CLOCK Setting the use or non use of clock function 3 Timer function setting WWEEKLY TIMER Setting the timer type 4 Contact number setting for error situation CALL Contact number display in case of error Setting the telephone number 4 Display change 1 Temperature display C F setting TEMP MODE C F e Setting the temperature unit C or F to display DISP MODE SETTING 2 Room air temperature display setting ROOM TEMP DISP SELECT Setting the use or non use of the display of indoor room air temperature 3 Automatic cooling heating display setting AUTO MODE DISP C H Setting the use or non use of the display of Cooling or Heating display during operation with automatic mode Function selection flowchart Refer to next page 1 Stop the air conditioner to start remote controller function selection mode 2 Select from item1 gt 3 Select from item2 gt 4 Make the setting Details are specified in item3 gt 5 Setting completed gt 6 Change the display to the normal one End Detailed setting 4 1 CHANGE
159. mpressor starts operating O Stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power board Open stop valve Check facility of power supply Correct the wiring UsV W phase to compressor Refer to 10 9 Outdoor power circuit board Check compressor Refer to 10 6 Replace outdoor power circuit board Current sensor error or input current error e Abnormal if current sensor detects 1 0A to 1 0A during compressor operation This error is ignored in case of test run mode e Abnormal if 40A SHW80 112V of input current is detected or 37A SHW80 112V or more of input current is detected for 10 seconds continuously Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board Decrease of power supply voltage Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Replace outdoor power circuit board Check the facility of power supply Low pressure 63L operated Abnormal if 63L is operated under 0 03MPa during compressor operation 63L Low pressure switch OCH526B Stop valve of outdoor unit is closed during operation Disconnection or loose connection of connector 63L on outdoor controller board Disconnection or loose connection of 63L Defective
160. n effective Dec 2013 Specifications are subject to change without notice
161. n Unit Remarks 2 Display range a 0 Operation state Referto 12 2 1 Detail Contents in Request Code _ 1 Compressor Operating current rms 0 50 A 2 Compressor Accumulated operating time 0 9999 10 hours 3 Compressor Number of operation times 0 9999 100 times 4 Discharge temperature TH4 3 217 Cc 5 Outdoor unit Liquid pipe 1 temperature TH3 40 90 C 6 Outdoor unit Liquid pipe 2 temperature 40 90 C 7 Outdoor unit 2 phase pipe temperature TH6 39 88 C 8 Outdoor unit Suction pipe temperature TH32 39 88 C 9 Outdoor unit Outside air temperature TH7 39 88 Cc 10 Outdoor unit Heatsink temperature TH8 40 200 Cc 11 12 Discharge superheat SHd 0 255 lt 13 Sub cool SC 0 130 14 Pressure saturation temperature TesHs 39 88 C 15 16 Compressor Operating frequency 0 255 Hz 17 Compressor Target operating frequency 0 255 Hz 18 Outdoor unit Fan output step 0 10 Step 19 Outdoor iia 1 speed 0 9999 aia Only for air conditioners with DC fan motor 20 Outdoor abies a speed f 0 _ 9999 rpm 0 is displayed if the air conditioner is a single fan Only for air conditioners with DC fan motor type 21 22 LEV A opening 0 500 Pulses 23 LEV B opening 0 500 Pulses 24 LEV C opening 0 500 Pulses 25 Primary current 0 50 A 26 DC bus voltage 180 370 V 27 28 29 Number of connected indoor units 0 4 Units 30 Indoor unit Setting t
162. n mode Compressor information Outdoor unit information Indoor unit information Confim TAGO OMENU MOON OFF Ful iS FILTER Ce Ssa 38E CHECK TEST OWOG E NOW PAR 21MAA CLEAR Activate cancel maintenance mode 1 Press the TEST button for 3 seconds to switch to maintenance mode Display MAINTENANCE If stable operation is unnecessary or if you want to check the data with the air conditioner stopped skip to step 4 Fixed Hz operation The operating frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Stable cooling Stable heating Stable operation Display IN operation gt operation gt cancellation COOL HEAT STABLE MODE STABLE MODE STABLE MODE CANCEL 3 Press the FILTER lt button to confirm the setting Display Waiting for stabilization E os ooo Stabilized Bae After 10 to 20 minutes 107 OCH526B Data measurement When the operation is stabilized measure operation data as explained below 4 Press the TEMP buttons Cv and CA to select the desired refrigerant address 5 Select the type of data to be displayed After selecting go to step 6 Compressor information MENU button D Cumulative __ ON OFF Number gt Operating current Display operation time CO
163. n off SW4 1 to finish the test run ON e There may be a faint knocking sound around the machine room after power is supplied but this is ORF m E no problem with product because the linear expansion pipe is just moving to adjust opening pulse e There may be a knocking sound around the machine room for several seconds after compressor starts operating However this is not a problem with product because it is generated by the check Stop Operation valve itself due to a small pressure difference in the refrigerant circuit Cooling Heating Note The operation mode cannot be changed by SW4 2 during test run To change test run mode stop the unit by SW4 1 change the operation mode and restart the test run by SW4 1 19 OCH526B 10 TROUBLESHOOTING 10 1 TROUBLESHOOTING lt Error code display by self diagnosis and actions to be taken for service summary gt Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit Actions to be taken for service which depends on whether or not the trouble is reoccurring at service are summarized in the table below Check the contents below before investigating details Unit conditions at service Error code Actions to be taken for service summary Judge what is wrong and take a corrective action according Displayed to 10 4 Self diagnosis action table The trouble is reoccurring Conduct troubleshooting
164. n remote controller 82 OCH526B REMOTE 6u 2 Functions are available when setting the unit number to 01 03 or AL 07 in case of wireless remote controller e When setting functions for an indoor unit in an independent system set the unit number to 01 referring to Set the indoor unit number of Operating Procedure e When setting functions for a s imultaneous twin indoor unit system set the unit number to 01 to 02 for each indoor unit in case of selecting different functions for each unit referring to setting the indoor unit number of Operating Procedure e When setting the same functions for an entire simultaneous twin indoor unit system set refrigerant address to AL 07 in case of wireless remote controller referring to setting the indoor unit number of Operating Procedure Function Initial setting Factory setting Not available Mode peting No 4 Way cassetie Ceiling concealed PEAD JA Q Settings Wall mounted PKA FAL 2 PKA HAL PKA KAL Filter sign 100h 2500h 07 No filter sign indicator Air flow Quiet Fan speed Standard Refer to the down table 1 High ceiling 4 directions 3 directions 2 directions Not supported No of air outlets Optional high efficiency 08 10 Refer to the Supported down table 1 No vanes Vane No 3 setting PLA only Vane No 1 set t
165. nal CN52C Connect to the power circuit board SHW80 112V SV2 Bypass valve SV1 Drain hose heater output 21S4 Four way valve CN4 Transmission to out door power circuit board CN4 CN2 Connect to the outdoor power circuit board CN2 Reception from power circuit board Zero cross signal 0 5V DC Not used SHW112 140Y 18V DC SHW80 112V 16V DC 16V DC CNAC to Power supply for outdoor noise filter circuit board 230V AC to Power supply for indoor and outdoor unit connection wire 230V AC 63H High pressure switch CNS S1 S2 230V AC es Outdoor noise filter circuit board PUHZ SHW112YHA PUHZ SHW140YHA PUHZ SHW112YHAR1 PUHZ SHW140YHAR1 PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK LI1 LI2 LI3 NI POWER SUPPLY LI1 LI2 LI LI3 LI3 LI1 AC400V input LI1 NI LI2 NI LI3 NI AC230V input Connect to the terminal block TB1 3W Y31 14 SSION NIXOL O3N uv GD1 Connect to the earth IH W0 G a5 i Gos Connect to the earth i T CNAC2 AC230V Connect to the outdoor controller circuit board CNAC 1 T LADZAD AD PAD 1 1 T T CNDC Connect to the outdoor controller circuit board CNDC Primary current Connect to the outdoor power circuit board CN5 CNL LO1 LO2 LO3 Connect to the ACL4 Connect to the outdoor POWER SUPPLY converter circuit board
166. nal directive There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Check if power is recovered from power failure black out The units will automatically start operating when power is recovered after power failure black out occurs This function is called power failure automatic recovery The air conditioner stops even though any buttons on the remote controller are not pressed OCH526B Check if you set ON OFF timer The air conditioner stops operating at the time designated if OFF timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive 53 There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Phone Calls From Customers How to Respond A white mist is expelled from the indoor unit This is not a malfunction This may occur when the operation gets started in the room of high humidity Water or moisture is expelled from the outdoor unit Cooling when pipes or piping joints are cooled they get sweated and water drips down Heating water drips down from the heat exchanger Make use of optional parts Drain Socket and Drain pan if these water needs to be recovered and dr
167. nction the refrigerant volume must be saved initial learning after installation Always operate this function in the following manner after installation e Always perform test run before using this function and confirm that the air conditioner operates normally To accurately detect refrigerant leaks set the wind speed to strong and execute this operation Refrigerant leak check is valid only with models which support the refrigerant leak check function Select Service from the Main menu and press the button Check menu 1 1 Error history wv Refrigerant volume check gt Refrigerant leak check Smooth maintenance Select Check with the or button and press the button Request code Service menu wv Select Refrigerant leak check with the F1 or F2 button and press the Vv Sea m button Stable mode will start Refrigerant leak check Press the Q button stable mode will start e retiren eE miyak Approx 20minutes Stable mode will take approx 20 minutes Begin V The operation data will appear Refrigerantleak check 1 2 Add Cond Add Cond The following value is the reference for the refrigerant volume check If the refrig 9 OK 4 OK erant is leaking NG will appear l oK Ne 3 NG Tasa The refrigerant volume check reference value can be changed with the func Check menu 9 tion selection Default value RP71 80
168. ncy operation switch SWE on indoor controller board Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON Use SW4 2 on outdoor controller board to set the operation mode cooling or heating SW4 1 is not used SW4 CN31 ON Heating ON Fy LO Shorting pins 1 2 Cooling OFF Turning the main power supply on will start the emergency operation SW4 ON Heating 4 Releasing emergency operation Turn the main power supply off Set the emergency operation switch SWE on indoor controller board to OFF Set the shorting pins of emergency operation connector CN31 on outdoor controller board to OFF Set SW4 2 on outdoor controller board as shown in the right 1 2 Cooling Note If shorting pins are not set on emergency operation connector CN31 the setting remains OFF 60 OCH526B 5 Operation data during emergency operation During emergency operation no communication is performed with the indoor unit so the data items needed for operation are set to the following values Operation mode Operation data Remarks COOL HEAT Intake temperature TH1 27 C 20 5 C Indoor pipe temperature TH2 5 C 45 C Indoor 2 phase pipe temperature TH5 56 50 C Set temperature 25 C 22 C Pressure saturation temperature Tesrs 50 C 50 C Liquid temperature TH3 45 C 5 G Discharge pipe temperature T
169. ndoor unit or remote controller error is detected by remote controller is connected correctly Remote controller transmitting error Check if noise entered into transmission wire of remote is detected by remote controller controller Re check error by turning off power and on again Remote controller signal receiving error is detected by indoor unit Remote controller transmitting error is detected by indoor unit 4 blinking Error code is not defined Check if remote controller is MA remote controller PAR 21MAA Check if noise entered into transmission wire of remote controller Check if noise entered into indoor outdoor connecting wire Re check error by turning off power and on again Be sure to replace the 4 way valve Check refrigerant pipes for disconnection or leakage After the recovery of refrigerant vacuum dry the whole refrigerant circuit Refer to section 10 6 HOW TO CHECK THE PARTS Check refrigerant circuit for operation 5 blinking Serial communication error Check if connector CN4 on outdoor controller board and lt Communication between outdoor f 4 controller board and outdoor power outdoor power board is not disconnected ae pa AG SETE Check if there is poor connection of connector on outdoor lt controller board and M NET P C board gt controller board CNMNT and CNVMNT Check M NET communication signal Communication error of M NET system
170. necting wire Defective indoor power board e Check the wiring of the outdoor unit e Check if the wiring is bad Check if the fuses are blown The fuses on the outdoor controller circuit board will be blown when the indoor outdoor connecting wire short circuits e Check if miswiring breaking or poor contact is causing this problem Indoor outdoor connecting wire is polarized 3 core type Connect the indoor unit and the outdoor unit by wiring each pair of 1 S2 and S3 on the both side of indoor outdoor terminal blocks e Replace the indoor controller board e Check if there is miswiring or breaking of wire e Replace the indoor power board Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LEDA LED2 O LED3 or Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit which is used to connect the indoor unit and the outdoor unit AC 198V to AC 264V No Check the status Not lighting of the indoor controller gt Board PE DS displa Check the looseness or disconnection of the indoor outdoor connecting wire Blinking Are there looseness or disconnection of the indoor outdoor connecting wire Check the refrigerant address of the outdoor unit SW1 3 to 1 6 Is the refrigeran
171. ng frequency allows smooth inspection even for inverter models Smooth Mainte nance Function Discharge temperature 64 C Conventional inspection work te MITSUBISHI ELECT Outdoor unit Indoor unit Remove th Measure IF service l the intake air AA temperature LIU oon amp Teme ON OFF l M GO ec Easy maintenance information unit 6 Accumulated operating Heat exchanger 6 Intake air ira temperature time lt 10 hours temperature C temperature C Number of ON OFF 6 Discharge Heat exchanger lIIIIIII Nat a times x10 times temperature C temperature C NI ll F Operating Outside air Filter operating o lopie III current A temperature C time Hours Ill The filter operating time is the time that has elapsed since the filter was reset 13 2 MAINTENANCE MODE OPERATION METHOD Note If you are going to use 13 3 GUIDE FOR OPERATION CONDITION set the airflow to High before activating maintenance mo Switching to maintenance mode Maintenance mode can be activated either when the air conditioner is operated or stopped It cannot be activated during test run Maintenance information can be viewed even if the air conditioner is stopped E Remote controller button information fa MITSUBISHI ELECTRIC One Cr MI HOWE 34 Teme ON OFF a Operatio
172. ng status of unit The tens digit Compressor operating frequency control Primary current control Secondary current control The ones digit In this digit the total number of activated control is displayed Compressor operating frequency control Preventive control for excessive temp erature rise of discharge temperature Preventive control for excessive temp erature rise of condensing temperature Frosting preventing control Preventive control for excessive temp erature rise of radiator panel Example The following controls are activated e Primary current control e Preventive control for excessive tempe rature rise of condensing temperature e Preventive control for excessive tempe rature rise of heatsink Code display 80 OCH526B The black square m indicates a switch position SW2 setting Display detail Explanation for display Outdoor suction pipe temperature TH32 39 88 39 88 When the temperature is 0 C or less and temperature are displayed by turns Example When 15 C 0 5 secs 0 5secs 2 secs gt 15 gt LEV C opening pulse 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Outdoor pipe temperature TH33 39 88 39 88 When the temperature is 0C or less and temp
173. noise filter circuit board from the electrical parts box Then remove the 2 screws screw and D that fix the plate equipped with the noise filter circuit board and converter circuit board See Photo 4 5 Note When reassembling the electrical parts box make sure the wirings are correct Controller circuit board C B Clamp Wire clip Photo 4 2 Bottom plate of Photo 4 3 electrical parts box Screw Screw Screw Screw Heatsink Electrical parts box Bottom plate of electrical parts box Photo 4 4 NE photo 45 Electrical parts box Noise filter circuit board Converter circuit board Screw CONV B Screw N F Power circuit board P B Noise filter circuit board N F 119 OCH526B OPERATING PROCEDURE 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 9 Disconnect the connectors TH7 6 red on the controller circuit board in the electrical parts box Loosen 2 fasteners for lead wires in the electrical parts box 4 Loosen the clamp for lead wires in the rear of the electrical parts box 5 Pull out the thermistor lt 2 phase pipe gt TH6 and thermis tor lt Ambient gt TH7 from the sensor holder Note When replacing thermistor lt 2 phase pipe gt TH6 or thermistor lt Ambient gt TH7 replace it together PHOTOS 5 Removing the thermistor lt 2 phase pipe gt TH6 and Photo 5 1 Ther
174. ntroller 8 Temperature Discharge temperature Indoor c I difference heat exchanger temperature Indoor heat exchanger temperature c Indoor intake air temperature Note 1 Fixed Hz operation may not be possible under the following tem ture ranges A In cool mode outdoor intake air temperature is 40 C or high indoor intake air temperature is 23 C or lower B In heat mode outdoor intake air temperature is 20 C or higt indoor intake air temperature is 25 C or lower 2 If the air conditioner is operated at a temperature range other tha ones above but operation is not stabilized after 30 minutes or more elapsed carry out inspection 3 In heat mode the operation state may vary due to frost forming o outdoor heat exchanger Cool mode Heat mode Cc 45 40 spection C Pies ae he eee ae PSS w a 1 r 1 W p ZS Q a Tt Se ee ee 4 4 yy Q oa a MIndoor intake air temperature Indoor ti Indoor heat exchanger temperature Indoor intake air temperature a 10 20 30 40 50 60 70 80 C 10 20 30 40 50 60 70 80 C e e Discharge temperature Indoor heat exchanger temperature Discharge temperature Outdoor heat exchanger temperature 13 4 INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION 13 4 1 PAR 31MAA Refrigerant leakage is detected after a long time To enable this fu
175. ntroller as explained below First check that the power on indicator is lit If the correct voltage DC12 V is not supplied to the remote controller the indicator will not light If this occurs check the remote controller s wiring and the indoor unit Power on indicator Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Press the CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK SELF CHECK PR F z ai I gt j J Remote controller self diagnosis result When the remote controller is functioning correctly When the remote controller malfunctions Error display 1 NG blinks gt The remote controller s transmitting receiv ing circuit is defective SELF CHECK SELF CHECK r Shee or Shee RL aS RE ARS Check for other possible causes as there is no problem with the remote The remote controller must be replaced with a new one controller Where the remote controller is not defective but cannot be operated Error display 2 E3 6833 or 6832 blinks Transmission is not possible Error display 3 ERC and the number of data errors are displayed Data error has occurred ERROR COPE RL s There might be noise or interference on the transmission path or the indoor unit or other remote controllers are defective Check th
176. ode LIMIT TEMP HEAT MODE The temperature range can be changed on heating mode LIMIT TEMP AUTO MODE The temperature range can be changed on automatic mode OFF initial setting The temperature range limit is not active When the setting other than OFF is made the temperature range limit setting on cooling heating and automatic mode is made at the same time However the range cannot be limited when the set temperature range has not changed To increase or decrease the temperature press the HTEMP V or A button To switch the upper limit setting and the lower limit setting press the t button The selected setting will flash and the temperature can be set Settable range Cooling Dry mode Lower limit 19 C 30 C Upper limit 30 C 19 C Heating mode Lower limit 17 C 28 C Upper limit 28 C 17 C Automatic mode Lower limit 19 C 28 C Upper limit 28 C 19 C 93 OCH526B 4 3 Mode selection setting 1 Remote controller main sub setting To switch the setting press the ON OFF button Main The controller will be the main controller Sub The controller will be the sub controller 2 Use of clock setting To switch the setting press the ON OFF button ON The clock function can be used OFF The clock function cannot be used 3 Timer function setting To switch the setting press the ON OFF button Choose one of the f
177. of power source voltage noise superimposition Disconnection or loose connection of earth wiring Disconnection or loose connection of CN2 on the outdoor power circuit board controller circuit board Defective power synchronous signal circuit in outdoor controller circuit board Defective power synchronous signal circuit in outdoor power circuit board 36 Check the field facility for the power supply Check earth wiring Check CN2 wiring Replace outdoor controller circuit board Replace outdoor power circuit board Continue to the next page From the previous page Error Code Abnormal point and detection method Case Judgment and action Detailed PFC error Overvoltage codes Undervoltage Overcurrent PFC detected any of the fol lowings a Increase of DC bus voltage to 420V b Decrease in PFC control voltage to 12V DC or lower c Increase in input current to 50A peak For models equipped with single phase PFC only Not applicable for SHW80 112VHA and SHW112 140YHA models Check for the switch settings for Model Select on the outdoor controller circuit board PFC IGBT error Undervoltage e When Compressor is running DC bus voltage stays at 310V or lower for consecutive 10 seconds SHW80 112VHA only Q Incorrect switch settings on the outdoor controller circuit board for model select Defective outdoor power circ
178. ollowings WEEKLY TIMER initial setting The weekly timer can be used AUTO OFF TIMER The auto off timer can be used SIMPLE TIMER The simple timer can be used TIMER MODE OFF The timer mode cannot be used When the use of clock setting is OFF the WEEKLY TIMER cannot be used 4 Contact number setting for error situation To switch the setting press the ON OFF button CALL OFF The set contact numbers are not displayed in case of error CALL The set contact numbers are displayed in case of error CALL_ The contact number can be set when the display is as shown on the left Setting the contact numbers To set the contact numbers follow the following procedures Move the flashing cursor to set numbers Press the B TEMP V and A button to move the cursor to the right left Press the CLOCK V and A button to set the numbers 4 4 Display change setting 1 Temperature display C F setting To switch the setting press the ON OFF button C The temperature unit C is used F The temperature unit F is used 2 Room air temperature display setting To switch the setting press the ON OFF button ON The room air temperature is displayed OFF The room air temperature is not displayed 3 Automatic cooling heating display setting To switch the setting press the ON OFF button ON One of Automatic cooling and Automati
179. ols for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Electronic refrigerant charging scale Gauge manifold Charge hose Gas leak detector Torque wrench Store the piping to be used indoors during instal lation and keep both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of compressor Do not use a charging cylinder The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbezene oil in a small amount If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released Charge refrigerant from liquid phase of gas cylinder Use the specified refrigerant only If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered
180. om cannot be cooled or heated sufficiently Check the set temperature of remote controller The outdoor unit cannot be operated if the set temperature is not appropriate The outdoor unit operates in the following modes COOL When the set temperature is lower than the room temperature HEAT When the set temperature is higher than the room temperature Check if filters are not dirty and clogged If filters are clogged the airflow amount will be reduced and the unit capacity will be lowered See the instruction manual that came with the product for how to clean the filters Check there is enough space around the air conditioner If there are any obstacles in the air intake or air outlet of indoor outdoor units they block the airflow direction so that the unit capacity will be lowered Sound comes out from the air conditioner A gas escaping sound is heard sometimes Q This is not a malfunction This is the sound which is heard when the flow of refrigerant in the air conditioner is switched A cracking sound is heard sometimes This is not a malfunction This is the sound which is heard when internal parts of units expand or contract when the temperature changes A buzzing sound is heard sometimes This is not a malfunction This is the sound which is heard when the outdoor unit starts operating Aticking sound is heard from the outdoor unit sometimes This is not a malf
181. ontroller 47 OCH526B LED display of the indoor controller board LED1 O LED2 O LED3 O Symptoms Nothing is displayed on the remote controller Inspection method and Diagnosis flow troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit which is used to connect the indoor unit and the outdoor unit NO AC 198V to AC 264V Check the voltage among L Ls and N on the terminal block TB1 of the outdoor power circuit board NO e Troubles concerning power supply e Check the power wiring to the outdoor unit e Check the breaker AC 198V to AC 264V YES Check the voltage between S1 and S2 on the terminal block TB1 of the outdoor unit which is used to connect the indoor unit and the outdoor unit Check the voltage of indoor controller board CN2D DC 12V to DC 16V Check the voltage of the unit after removing the indoor power board CN2S AC 198V to AC 264V YES NO DC 12V to DC 16V OCH526B Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Bad wiring of the outdoor controller board The fuses on the outdoor controller circuit board are blown Defective indoor controller board Miswiring breaking or poor connection of in door outdoor con
182. ontrolling DIP SW2 on A Control Service Tool Operation indicator SW2 Indicator change of self diagnosis SW2 setting ON The black square m indicates a switch position Explanation for display Display detail 123456 lt Digital indicator LED1 working details gt Be sure that 1 to 6 in the SW2 are set to OFF 1 Display when the power supply ON disecond When the power supply ON blinking displays by turns interval Wait for 4 minutes at the longest m 2 When the display lights Normal operation Operation mode display LEDA Oe p The tens digit Operation mode Display Operation Model OFF FAN COOLING DRY HEATING DEFROSTING C5 is displayed during replacement operation Lighting Initial setting gt The ones digit Relay output Display ee Compressor 4 way valve Solenoid valve mil ON ON ON ON ON ON ON Display during error postponement Postponement code is displayed when compressor stops due to the work of protection device Postponement code is displayed while error is being postponed ON o O o N 9 When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Contents to be inspected During operation Abnormal high pressure 63H operated Abnormal
183. oor unit Notes 1 If the beeper does not sound again after the initial 2 beeps to confirm the self check start signal was received and the OPERATION INDICATOR lamp does not come on there are no error records 2 If the beeper sounds 3 times continuously beep beep beep 0 4 0 4 0 4 sec after the initial 2 beeps to confirm the self check start signal was received the specified refrigerant address is incorrect 31 OCH526B 10 4 SELF DIAGNOSIS ACTION TABLE lt Abnormalities detected when the power is turned on gt Note 1 Refer to indoor unit section for code P and code E Error Code Abnormal point and detection method Case Judgment and action No voltage is supplied to terminal block TB1 of outdoor unit a Power supply breaker is turned off b Contact failure or disconnection of power supply terminal c Open phase L or N phase Electric power is not charged to power supply terminal of outdoor power circuit board a Contact failure of power supply terminal b Open phase on the outdoor power circuit board Electric power is not supplied to outdoor controller circuit board a Disconnection of connector CNDC Disconnection of reactor DCL or ACL Disconnection of outdoor noise filter circuit board or parts failure in outdoor noise filter circuit board Defective outdoor power circuit board Defective outdoor controller circuit board Check foll
184. or 02 Input current sensor error Li phase open error uid Abnormal power synchronous signal 08 PFC IGBT error SHW80 112V Undervoltage 20 e Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0A L phase open error 04 PFC IGBT error 20 24 Code display SW2 setting Display detail The black square m indicates a switch position Explanation for display DC bus voltage 180 370 180 370 When it is 100V or more hundreds digit tens digit and ones digit are displayed by turns Capacity save 0 255 When air conditioner is connected to M NET and capacity save mode is demanded 0 100 is displayed When there is no setting of capacity save 100 is displayed 0 255 When the capacity is 100 hundreds digit tens digit and ones digit are displayed by turns Example When 100 0 5 secs 0 5secs 2 secs i gt 00 gt Error postponement code history 2 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error postponement code history 3 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponem
185. or water is are flowing in the indoor unit or refrigerant pipe or when the refrigerant and or water is are chugging Water does not heat or cool well m Clean the filter of water piping Flow is reduced when the filter is dirty or clogged m Check the temperature adjustment and adjust the set temperature m Make sure that there is plenty of space around the outdoor unit Water or vapour is emitted from the outdoor unit m During cooling mode water may form and drip from the cool pipes and joints m During heating mode water may form and drip from the heat exchanger of outdoor unit m During defrosting mode water on the heat exchanger of outdoor unit evaporates and water vapour may be emitted The operation indicator does not appear in the remote control ler display m Turn on the power switch will appear in the remote controller display appears in the remote controller display m During external signal control appears in the remote controller dis play and FTC operation cannot be started or stopped using the remote controller When restarting the outdoor unit soon after stopping it it does not operate even though the ON OFF button is pressed FTC operates without the ON OFF button being pressed FTC stops without the ON OFF button being pressed Remote controller timer operation cannot be set P A WAIT appears in the remote controller display m Wait approximat
186. ory gt sM nn SHE uu Address 3 digits or unit number 2 digits lt When there is no corresponding unit gt SELF CHEEK _ Lo SELF CHEEK Ee FF ERROR rey ERROR page nn nn LILI LILI Reset the error history Display the error history in the diagnosis result display screen see step SELF CHECK PI SELF CHECK fA Te ERROR ope lt Pes gene Nes mnm nn Ik LILI LILI OCH526B 28 thi When the error history is reset the display will look like the one shown below Press the ON OFF button twice within 3 ds The self d I ny pay a j SORD u i ee L SSS a alae However if you fail to reset the error history the error content will be displayed address or refrigerant address will blink again a m m s VIZ SELF CHECK x SELF CHECK s ad Ee a p enon Gane nn nn rl LILI LILI Cancel self diagnosis Self diagnosis can be cancelled by the following 2 methods Press the CHECK button twice within 3 seconds gt Self diagnosis will be cancelled and the screen will return to the previous state in effect before the start of self diagnosis Press the D ON OFF button gt Self diagnosis will be cancelled and the indoor unit will stop 10 3 5 Remote controller check lt PAR 21MAA gt Ifthe air conditioner cannot be operated from the remote controller diagnose the remote co
187. ottom See Photo 2 2 7 Loosen the clamp for lead wires on the motor support Note Due to a parts sharing the fan motor for service has longer lead wires Upon replacement tie up any excessive lead wires in a bundle then fix it with a clamp in the electrical parts box Photo 1 Top panel fixing screws Top panel s IPA kahana I Service panel A fixing screw I Fan grille Grille kasan 3 Pu T Service panel Slide _v Grille fixing F screws gt Service panel fixing screws Photo 2 1 Photo 2 2 Fan Propeller Front panel Fan motor fixing screws motor Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the indoor outdoor connecting wire and power supply wire from terminal block 4 Disconnect the connector CNF1 CNF2 LEV A LEV B and LEV C on the controller circuit board lt Symbols on the board gt lt CNF1 CNF2 Fan motor e LEV A LEV B LEV C LEV 5 Disconnect the pipe side connections of the following parts e Thermistor lt Liquid gt TH3 e Thermistor lt Discharge gt TH4 e Thermistor lt 2 phase pipe gt TH6 e Thermistor lt Ambient gt TH7 e Thermistor lt Suction gt TH32 e Thermistor lt Ref check gt TH33 e Thermistor lt Comp surface gt TH34 e High pressure switch 63H e Low pressure switch 63L e High pressure sensor 63HS 4 way valve coil 21
188. outdoor controller board Defective action of linear expansion valve Malfunction of fan driving circuit Check indoor unit and repair defect Check if stop valve is fully open Check piping and repair defect Check outdoor unit and repair defect B Check the detected temperature of outside temperature thermistor on LED display SW2 on A Control Service Tool Refer to 10 10 Turn the power off and check F5 is displayed when the power is turned again When F5 is displayed refer to Judgment and action for F5 Check linear expansion valve Refer to 10 6 8 Replace outdoor controller board U2 1102 High discharging temperature 1 Abnormal if TH4 exceeds 125 C or 110 C continuously for 5 minutes Abnormal if TH4 exceeds 110 C or more continuously for 30 seconds after 90 seconds have passed since the defrosting operation started 2 Abnormal if discharge superheat Cooling TH4 Te3Hs Heating TH4 T63HS exceeds 70 C continuously for 10 minutes TH4 Thermistor lt Discharge gt High comp surface temperature Abnormal if TH34 exceeds 125 C In the case of high comp surface temperature error compressor does not restart unless the thermistor TH34 becomes less than 95 C TH34 Thermistor lt Comp surface gt Overheated compressor operation caused by shortage of refrigerant Defective operation of stop valve Defective thermistor Defe
189. ow 104 lpueH d Igued ales ANNA Bulaow 10 pueH n uoneoo uono uuoo FATWA dO1S JO uone9lIpul lt your g e zs 6 auwi uono uuoo adid aINDIN 1ueJeBuj ti G SARA A you g 9 88 SL A SUW14 uono uuoo did Sy lueJeBuj ti Q Li Bum 100p NO 100pu lt 1uBiHi e k k ka S JON JO jd wex um Ajddns samo 4437 uono uuoo BuluU l u d ih N hy UU euu ueq ZZE Buou 10 ppueH SNS 056 oeu IN 23H OLW 40g uonepunod EEEO SEG Bueuosiq sly S PUHZ SHW80VHAR2 BS UK PUHZ SHW112VHAR2 BS UK PUHZ SHW112YHAR2 BS UK PUHZ SHW140YHAR2 BS UK N evi 99 I y a fo OLW 408g sajoy payojou A a uojyepuno4 padeys n z y lul sly IRAH SMelUul ANY OPIS mojaq pue seal Jubu Juos SUOOOIIP t WO pew aq URI Suol o uuoo um pue Budi SNOILOSUIC DNIHIM DNIdid 7 y NOUWANNOS ugy ss 1 lt uBi u 0q uonepunoja gt Allgeoo paseyound q snu siSUSEA pue sog slloq OLIN uollepunoj YIM Ajwy yun 3y aundas se q S1109 NOILVONNOJ wesBelp Mojaq ay u UMOYS JB SS 9I 99JA1 S 10 p p u oeds jo suoisu uuiq 3OVdS AOIAYAS Z aun aul PUNY FOWdS JIU oja syenuew uonegl ls SI siejep sejnoiied ul y u ual o uo euejdxg duiex
190. ower lt Comp surface gt receiver TH34 114 OCH526B Fi OPERATING PROCEDURE PHOTOS 7 Removing the 4 way valve coil 21S4 and linear expansion valve coil LEV A LEV B LEV C 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 Removing the 4 way valve coil 3 Remove 4 way valve coil fixing screw M5 x 6 4 Remove the 4 way valve coil by sliding the coil toward you Loosen the clamp for lead wires on the separator Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 5 Disconnect the connector 21S4 green on the controller circuit board in the electrical parts box Removing the linear expansion valve coil 3 Remove the linear expansion valve coil by sliding the coil upward Loosen the clamp for lead wires on the separator Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 4 Disconnect the connectors LEV A white LEV B red and LEV C blue on the controller circuit board in the electrical parts box Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 side panel R fixing screws 5 x 12 in the rear of the unit then remove the side panel R 5 Remove the 4 way valve coil 6 Re
191. ower Supply gt CN51 Connector lt Connection for Option gt TH32 Thermistor lt Suction gt L1 A2 OU _ Connection Terminal lt L1 Power Supply gt SV1 CH Connector lt Connection for Option gt TH33 Thermistor lt Ref check gt L2 A2 OU _ Connection Terminal lt L2 Power Supply gt ss Connector lt Connection for Option gt TH34 Thermistor lt Comp Surface gt L3 A2 OU Connection Terminal lt L3 Power Supply gt CNM Connector lt Connection for Option gt LEV A LEV B LEV C Linear Expansion Valve N IN Connection Terminal LED1 LED2 LED lt Operation Inspection Indicators gt ACL ACL2 ACL3 ACL4 Reactor CK OU Connection Terminal F4 F2 F3 F4 FUSE lt T6 3AL250V gt CY1 CY2 Capacitor X51 X52 X54 Relay LEV C When M NET adapter is connected GH 63L LEVA LEVB M TH33 TH32 TH7TH6 TH3 THA oN TH34 M M an ce cB cy 3 5 e E ee p I 2 MA Oem A Patot 41251 T 321 51 5 Pes e P E MS WHT TH33 TH32 TH7 6 TH3 TH4 63HS TH34 LENA LEV B CNVMNT CNMNT 2 28 3 65 MANET ADAPTER YLW BLK RED WHT WHT WHT RED WHT RED WHT WHT 5 MF2 1m 9 CNF2 2o gE 2 ee wan 1 a a 9690999969560509 a lz is ua Fy 3 88 on U g SSE e WHT Zl Tay 3 RED e 63H CM YW WHT ia CN2 LA I 22 Z 1 TRANS 4_ WHT 7 1 5 2 CNDC 2 BO PNK at f 7 S F2 CNAC F3 g 3 119 WHT x x gt lt BE e CNS 1 2 R A lel WHT to FA F4 us B Ba 1 B ss s o Wa GRN BH 8 Gay BI WHT 2184 M NET ADAPTER S
192. owing items a Power supply breaker b Connection of power supply terminal block TB1 c Connection of power supply terminal block TB1 Check following items a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board Check connection of the connector LI or NI Refer to 10 9 Check connection of the connector CNDC on the outdoor controller circuit board Check connection of the connector CNDC on the outdoor power circuit board V the noise filter Y Refer to 10 9 Check connection of reactor DCL or ACL Refer to 10 9 a Check connection of outdoor noise filter circuit board b Replace outdoor noise filter circuit board Refer to 10 9 Replace outdoor power circuit board Replace controller board When items above are checked but the units can not be repaired 63L connector open Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply 63L Low pressure switch Disconnection or contact failure of 63L connector on outdoor controller circuit board Disconnection or contact failure of 63L 63L is working due to refrigerant leakage or defective parts Defective outdoor controller circuit board Check connection of 63L connector on outdoor controller circuit board Refer to 10 9 Check the 63L side of connecting wire Check refrigerant pressure Charge additional refrigerant Check continui
193. owing table to find the cause Symptom Cause Wired remote controller LED 1 2 PCB in outdoor unit For about 2 minutes after power on PLEASE WAIT After LED 1 2 are lighted LED 2 is turned off then only LED 1 is lighted Correct operation For about 2 minutes following power on op eration of the remote controller is not possible due to system start up Correct operation PLEASE WAIT Error code Subsequent to about 2 minutes Only LED 1 is lighted e Connector for the outdoor unit s protection device is not connected Reverse or open phase wiring for the outdoor units power terminal block L1 L2 L3 LED 1 2 blink Display messages do not after power on appear even when operation switch is turned ON operation lamp does not light up Only LED 1 is lighted e Incorrect wiring between FTC and outdoor incorrect polarity of S1 S2 S3 e Remote controller wire short LED 1 blinks twice LED 2 blinks once Note Operation is not possible for about 30 seconds after cancellation of function selection Correct operation For description of each LED LED1 2 3 provided on the FTC refer to the following table LED1 power for microprocessor Indicates whether control power is supplied Make sure that this LED is always lit LED2 power for remote controller Indicates whether power is supplied to the remote controller This LED lights
194. own work refrigerant Note In case existing pipes were used for gas or oil heat pump system be sure to clean the pipes Disconnect existing air con ditioner from piping Y Existing pipes cannot be reused Use new pipes Y Existing pipes can be reused Y Connect a new air conditioner eThe air conditioner automatically performs cooling operation through replace filter for about 2 hours Connecting a new air conditioner Flaring work should be done so that flare meets the dimension for R410A Use flare nut provided with indoor and outdoor unit When using gas piping of 619 05mm for SHW112 140 Make sure that DIP SW8 1 on outdoor unit controller board is set to ON This is to keep the pressure on pipes within permissible range e Use different diameter joint or adjust the piping size by brazing When using pipes larger than specified size for SHW80 Make sure that DIP SW8 1 on outdoor unit controller board is set to ON This is to prevent oil flow ratio from lowering due to the decrease in flowing refrigerant e Use different diameter joint or adjust the piping size by brazing When existing pipes are specified size The pipes can be reused e Use different diameter joint or adjust the piping size by brazing OCH526B 2 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter
195. perature ranges are restricted Schedule Set the start stop times to operate the units in the energy save mode for each day of the week and set the energy saving rate e Up to four energy save operation patterns can be set for each day Time can be set in 5 minute increments e Energy saving rate can be set to a value from 0 and 50 to 90 in 10 increments Night setback Use to make Night setback settings Select Yes to enable the setting and No to disable the setting The temperature range and the start stop times can be set Filter information Use to check the filter status The filter sign can be reset Error information Use to check error information when an error occurs Error code error source refrigerant address unit model manufacturing number contact information dealer s phone number can be displayed The unit model manufacturing number and contact information need to be registered in advance to be displayed Maintenance Auto descending panel Auto descending panel Optional parts Up Down you can do Manual vane angle Use to set the vane angle for each vane to a fixed position Initial setting Main Sub When connecting two remote controllers one of them needs to be designated as a sub controller Clock Use to set the current time Main display Use to switch between Full and Basic modes for the Main display The initial setting is Full
196. play Pipe temperature Liquid TH3 40 90 40 90 When the coil thermistor detects 0 C or below and temperature are displayed by turns Example When 10 C 0 5 secs 0 5secs I 10 gt 2 secs Discharge temperature TH4 3 217 3 217 When the discharge thermistor detects 100 C or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 C 0 5 secs 0 5secs 1 gt 05 gt 2 secs Output step of outdoor FAN 0 10 The number of ON OFF times of com pressor 0 9999 0 9999 When the number of times is 100 or more hundreds digit tens digit and ones digit are displayed by turns Example When 42500 times 425 x100 times 0 5 secs 0 5secs 4 gt 25 2 secs Compressor integrating operation times 0 9999 0 9999 When it is 100 hours or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 x10 hours 0 5 secs 0 5secs 12 gt 45 gt 2 secs 10 hours Compressor operating current 0 50 0 50 Value after the decimal point will be truncated Compressor operating frequency 0 225 0 255 When it is 100Hz or more hundreds digit tens digit and on
197. pletion of installation work 85 OCH526B Function setting Ref address 8 Grp Sending data 000 11 1 2 Selecting functions using the wired remote controller lt PAR 21MAA gt First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection position is given For actual operations refer to steps to Setting number Refrigerant address Unit number Mode MIN ae MITSUBISHI ELECTRIC T Oo AR B TEMP ON OFF V A Df O038E OMENU ON OFF hall D FILTER e C OD C C Al Modes 01 to 14 can be activated BAY MONITOR SET kad Beal HECK TEST Gv CAD C CLEAR by pressing buttons and simultaneously and modes 15 to 28 by pressing buttons and O Selecting functions using the wired remote controller Check the function selection setting Switch to function setting mode Press and at the same time with the remote controller stopped 3k For modes 15 and higher press and at the same time Specify refrigerant address 00 outdoor unit Specify unit No 00 indoor unit Use and Specified indoor unit Enter the setting FAN operation Press
198. re and turn the power on again Check transmission waveform or noise on transmission wire BUS BUSY 1 Overtime error by signal collision damage Abnormal if transmitting signal is not possible for 8 10 minutes continuously because of collision of transmission 2 Data could not reach transmission wire for 8 10 minutes continuously because of noise or etc Note The address and attribute displayed at remote controller indicate the controller that detected abnormality Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmission wire continuously Transmission quantity has increased and transmission of signal is not possible because there was wiring mistake of terminal block for transmission wire TB3 and terminal block for central control TB7 in outdoor unit Transmission are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect transmission of control and central control system of outdoor unit then abnormality is detected Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote controller is not connected to terminal block for central control TB7 of outdoor unit Check if transmission wire of indoor unit FRESH MASTER or LOSSNAY is not connected to terminal block for transmission wire of outdoor unit Check if terminal bloc
199. re contact failure gt gt Yes gt j No Power supply check Remove the connector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC280 380V TEST POINT Vcc between 5 and 4 of the fan connector Vcc DC15V v Is the voltage normal gt Yes Replace the fan motor L No vJ Yes OK Check the operation of fan END Replace outdoor controller board NG v K C Replace outdoor controller board p Check the operation END JL NG C Replace the fan motor D 10 7 HOW TO CHECK THE COMPONENTS lt HIGH PRESSURE SENSOR gt voy MULTI CONTROLLER BOARD SENSOR ja 5V DC i PRESSURE Output Vout DC MPa 56 OCH526B lt Thermistor feature chart gt Low temperature thermistors e Thermistor lt Liquid gt TH3 e Thermistor lt 2 phase pipe gt TH6 e Thermistor lt Ambient gt TH7 e Thermistor lt Suction gt TH32 e Thermistor lt Ref check gt TH33 Thermistor RO 15 KQ 3 B constant 3480 2 1 1 Rt 15exp 3480 273 t 973 0c 15 kQ 30C 4 3 kQ 10 9 6kQ 40C 3 0 kQ 20 C 6 3 kQ 25C 5 2 kQ Medium temperature thermistor e Thermistor lt Heatsink gt TH8 SHW112 140YHA only Thermistor R50 17 KQ 2 B constant 4150 3 1 1 Rt 17exp 4150
200. re overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value minus 1 0 0 1 1 2 2 Actuator output state Request code 54 Data display 9 0 x Actuator output state Actuator output state Actuator output state Actuator output state Display SV1 Four way valve Compressor Compressor gt Display 520 SV2 ss warming up 0 0 1 ON 1 ON 2 ON 2 ON 3 ON ON 3 ON ON 4 ON 4 ON 5 ON ON 5 ON ON 6 ON ON 6 ON ON TA ON ON ON 7 ON ON ON 8 ON 9 ON ON A ON ON b ON ON ON C ON ON d ON ON ON E ON ON ON F ON ON ON ON Error content U9 Request code 55 Data display ololx x Error content Error content Error content Detected Error content Detected Display Overvoltage Undervoltage Li phase Power synchronizing Display Converter Fo PAM error error error open error signal error error 0 0 1 e 1 e 2 e 2 e 9 3 e e 4 e 5 e e 6 e e 7 6 e e 8 e 9 e A J e b e e C e e d e e 6 E e e F e e e e 102 OCH526B Contact demand capacity Request code 61 Data display 0 0 0
201. recautions during the repair service Do not pour water into the electric parts Do not touch the refrigerant exercise great caution not to touch the live parts e Do not perform the work involving the electric parts with wet hands Do not touch the hot or cold areas in the refrigerating cycle e When the repair or the inspection of the circuit needs to be done without turning off the power 3 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes In case of using the existing pipes for R22 be careful with the followings Be sure to perform replacement operation before test run Change flare nut to the one provided with this product Use a newly flared pipe Avoid using thin pipes Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc The following tools are necessary to use R410A refrigerant To
202. remote local controller combined operation cancel the error code after turning off remote operation During central control by a MELANS controller cancel the error code by pressing the MD ON OFF button 10 3 4 Self Diagnosis During Maintenance or Service lt PAR 21MAA gt Since each unit has a function that stores error codes the latest check code can be recalled even if it is cancelled by the remote controller or power is turned off Set the unit number or refrigerant address you want to diagnose Press the TEMP buttons Cv and CA to select the desired number or address The number address changes between 01 and 50 or 00 and 15 Check the error code history for each unit using the remote controller Switch to self diagnosis mode Press the CHECK button twice within 3 seconds The display content will change as shown below SELF CHECK wi LIL The refrigerant address will begin to blink approximately 3 seconds after being selected and the self diagnosis process will begin Unit number or refrigerant address to be diagnosed Display self diagnosis results lt When there is error code history gt For the definition of each error code refer to the indoor unit s installation manual or service handbook Alternating Display SELF CHEM SELF CHECK A Gane a c ERROR gfe Error code 2 or 4 digits lt When there is no error code hist
203. ring Defective outdoor power circuit board Compressor has a ground fault Check the field facility for the power supply Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Replace outdoor power circuit board Check compressor for electrical insula tion Replace compressor Undervoltage error e Instantaneous decrease in DC bus voltage to SHW80 112VHA 200V SHW112 140YHA 350V Decrease in power source voltage instantaneous stop Disconnection or loose connection of CN52C on the outdoor power circuit board controller circuit board SHW VHA Defective converter drive circuit in outdoor power circuit board SHW VHA Defective 52C drive circuit in outdoor power circuit board Defective outdoor converter circuit board SHW YHA Disconnection or loose connection of rush current protect resistor RS SHW YHA Defective rush current protect resistor RS SHW YHA Disconnection or loose connection of main smoothing capacitor CB SHW VHA Disconnection or loose connection of CN2 on the outdoor power circuit board controller circuit board SHW VHA Power circuit failure on DC supply for 18V DC output on outdoor controller circuit board SHW VHA Check the field facility for the power supply Check CN52C wiring SHW VHA Replace outdoor power circuit board SHW VHA Replace outdoor power circuit board Replace ou
204. room temperature thermistor Malfunction outdoor unit Abnormality of pipe temperature thermistor Liquid Malfunction outdoor unit Abnormality of drain sensor Float switch connector open Remote controller transmitting error Drain overflow protection is operating Indoor outdoor unit communication error Freezing overheating protection is operating No error history Abnormality of pipe temperature No applied unit Abnormality of pipe temperature thermistor Cond Eva Forced compressor stop due to water leakage abnormality Abnormality of indoor controller board Abnormality of refrigerant See the table below for details of the LED display LED 1 2 3 on the indoor controller board LED1 microprocessor power supply Lights when power is supplied Lights when power is supplied for wired remote controller The indoor unit should be connected to the outdoor unit with address 0 setting LED2 remote controller LED3 indoor outdoor communication Flashes when indoor and outdoor unit are communicating 24 OCH526B 10 2 4 Test run for wireless remote controller Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1 0MQ Turn on the main power to the unit Press the ci button twice continuously Start this operation from the status of remote controller display turned off TES
205. s N Warning When pumping down the refrigerant stop the compressor before disconnecting the refrigerant pipes If the refrigerant pipes are disconnected while the compressor is operating and the stop valve ball valve is open the pressure in the refrigeration cycle could become extremely high if air is drawn in causing the pipes to burst personal injury etc 9 2 UNIT REPLACEMENT OPERATION When reusing the existing pipes that carried R22 refrigerant for the SW75 100 120 models replacement operation must be performed before performing a test run If new pipes are used these procedures are not necessary If existing pipes that carried R22 refrigerant are used for the SW75 100 120 models these procedures are not necessary The replacement operation cannot be performed During replacement operation C5 is displayed on A Control Service Tool PAC SK52ST This is applied to only SW75 100 120 models 9 3 START AND FINISH OF TEST RUN e Operation from the indoor unit Execute the test run using the installation manual for the indoor unit e Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit test run can be started and finished and its operation mode cooling heating can be set up Set the operation mode cooling heating using SW4 2 lt SW4 gt Turn on SW4 1 to start test run with the operation mode set by SW4 2 Tur
206. s 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove the valve bed Refer to procedure 8 7 Remove the side panel R Refer to procedure 8 8 Remove the electrical parts box See Photo 3 9 Remove 3 separator fixing screws 4 x 10 and remove the separator 10 Remove the soundproof cover for compressor 11 Recover refrigerant 12 Remove the welded pipe of compressor inlet and outlet then remove the compressor 13 Remove the 3 points of the compressor fixing nut using a spanner or a adjustable wrench Note Recover refrigerant without spreading it in the air Removing the capacitor yy fixing 4 Remove 4 capacitor band fixing screws 4 x 10 and lt Screws remove the capacitor i The reactor and capacitor are attached to the rear of the screws electrical parts box Capacitor band Capacitor CB fixing screws 12 Removing the compressor MC 1 Remove the service panel See Photo 1 Photo 9 2 Remove the top panel See Photo 1 Separator Valve bed Compressor fixing nut 116 OCH526B OPERATING PROCEDURE PHOTOS 13 Removing the power receiver 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 9 Remove the cover panel front Refer to procedure 12 4 Remove the cover panel rear Refer to procedure 12 5 Remove the electrical parts box See Photo 3 6 Remove the valve bed R
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208. series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix with different kind of refrigerant Furthermore as the working pressure of R410A is 1 6 times higher than that of R22 their sizes of flared sections and flare nuts are different Thickness of pipes Because the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 0 7 mm or below Diagram below Piping diameter and thickness Thickness mm Nominal dimensions inch Outside diameter mm 1 4 6 35 3 8 9 52 1 2 12 70 5 8 15 88 3 4 19 05 Dimensions of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because its working pressure is higher than that of other refrig erants Therefore to enhance airtightness and intensity flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch the dimension B changes Use torque wrench corresponding to each dimension
209. setting Display detail Explanation for display Discharge superheat on error occurring 0 255 SHd When the temperature is 100 C or more hundreds 0 255 digit tens digit and ones digit are displayed by Ps Wa Tana turns Heating TH4 Te3xs Example When 150 C 0 5 secs O 5secs 2 secs i gt 50 gt Sub cool on error occurring SC 0 130 0 130 When the temperature is 100 C or more hundreds p gt Tesus TH3 digit tens digit and ones digit are displayed by Heating TesHs TH2 turns Example When 115 C 0 5 secs O0 5secs 2 secs 1 15 gt Thermo on time until error stops 0 999 0 999 When it is 100 minutes or more hundreds digit tens digit and ones digit are displayed by turns Example When 415 minutes 0 5 secs 0 5secs 2 secs Minute 4 gt 15 gt Indoor pipe temperature Liquid 39 88 TH2 3 When the temperature is 0 C or less and Indoor 3 temperature are displayed by turns 39 88 Indoor pipe temperature Cond Eva 39 88 TH5 3 When the temperature is 0 C or less and Indoor 3 temperature are displayed by turns 39 88 When there is no indoor unit 00 is displayed Controlling status of compressor The following code will be a help to know the operating frequency operati
210. setting number 02 Not available Direct the wireless remote controller toward the receiver of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the the setting number Setting number 1 2 beeps 0 4 seconds each 2 2 beeps 0 4 seconds each repeated twice 3 2 beeps 0 4 seconds each repeated 3 times If a setting number that cannot be recognized by the unit is entered the setting will turn back to the original setting If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the setting number Repeat steps and to make an additional setting without changing unit number Repeat steps to to change unit number and make function settings on it Complete the function settings Press button Do not use the wireless remote controller for 30 seconds after completing the function setting 88 OCH526B 11 2 FUNCTION SELECTION OF REMOTE CONTROLLER 11 2 1 PAR 31MAA ae MITSUBISHI ELECTRIC o Function buttons Se JE F1 F2 F3 F4 4 ON OFF button The functions of the function buttons change depending on the screen Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen When the system is centrally controlled the button funct
211. ssure of 5 3 MPa G or over Only for R410A Use pressure performance of 5 09 MPa G or over Charge hose Electronic scale Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Only for R410A Top of cylinder Pink Refrigerant cylinder Cylinder with syphon Refrigerant recovery equipment 4 Refrigerant leakage detection function This air conditioner can detect refrigerant leakage which may happen during a long period of use In order to enable the leakage detection settings are required to let the unit memorize the initial conditions initial learning Refer to 13 4 INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION OCH526B 3 3 PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES 1 Flowchart Measure the existing pipe thickness and check for damage 1 Y The existing pipe thickness meets speci fications and the pipes are not damaged The existing pipe thickness does not meet specifications or the pipes are damaged Y Check if existing air conditioner can operate Y Y Y Existing air conditioner can Existing air conditioner operate cannot operate Y Y Perform cooling operation Use a refrigerant recovery for about 30 minutes and equipment to recover the then do a pump d
212. tal display for applied setting Setting details Display details H P Cooling only 0 H P 1 Cooling only Single phase 3 phase O Single phase 2 3 phase Code display e The ones digit Setting details Display details Defrosting switch 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed Indoor pipe temperature Liquid TH2 1 39 88 Indoor 1 When the temperature is 0 C or less and 39 88 temperature are displayed by turns Indoor pipe temperature Cond Eva 39 88 TH5 1 When the temperature is 0C or less and Indoor 1 temperature are displayed by turns 39 88 Indoor pipe temperature Liquid TH2 2 39 88 Indoor 2 When the temperature is 0C or less and 39 88 temperature are displayed by turns Indoor pipe temperature Cond Eva 39 88 TH5 2 When the temperature is 0 C or less and Indoor 2 temperature are displayed by turns 39 88 Indoor room temperature TH1 8 39 76 OCH526B SW2 setting Display detail The black square m indicates a switch position Explanation for display ON Indoor setting temperature 17 30 Pressure saturation temperature Te3Hs 39 88 39 88 When the temperature is 0C or less an
213. tdoor converter circuit board SHW YHA Check RS wiring SHW YHA Replace RS SHW YHA Check CB wiring SHW VHA Check CN2 wiring SHW VHA Replace outdoor controller circuit board SHW VHA Input current sensor error L1 phase open error e Decrease in input current through outdoor unit to 0 1A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 6A L1 phase open SHW YHA Disconnection or loose connection between TB1 and outdoor noise filter circuit board SHW YHA Disconnection or loose connection of CN5 on the outdoor power circuit board CNCT on the outdoor noise filter board Defective ACCT AC current trans on the outdoor noise filter circuit board SHW YHA Defective input current detection circuit in outdoor power circuit board Defective outdoor controller circuit board Check the field facility for the power supply SHW YHA Check the wiring between TB1 and outdoor noise filter circuit board SHW YHA Check CN5 CNCT wiring SHW YHA Replace outdoor noise filter circuit board SHW YHA Replace outdoor power circuit board Replace outdoor controller circuit board Abnormal power synchronous signal No input of power synchronous signal to power circuit board e Power synchronous signal of 44 Hz or less or 65 Hz or more is detected on power circuit board OCH526B Distortion
214. tion Cool mode This request code is not provided to collect data It is used to fix the operation state i This request code is not provided to collect data It is used to cancel the operation state that has been 767 Stable operation cancellation fixed by request codes 765 and 766 OCH526B 100 12 2 1 Detail Contents in Request Code Example Request code 004 55 nn LILI Discharge temperature 69 C Refrigerant address 00 A Maintenance mode display Operation state Request code 0 Data display C 4 Operation mode Relay output state Operation mode Display Operation mode 0 STOP FAN G COOL DRY H HEAT q DEFROST Indoor unit Control state Request code 50 B Refrigerant address C Data display area D Request code display area Relay output state Data display Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Outdoor unit Control state Request code 51 Data display State 0 0 0 O Normal O O O 1 Preparing forheat operation O O O 2 Defrost Compressor Frequency control state Request code 52 Data display 0 0
215. to the transmission wire of remote controller Check disconnection or looseness of indoor unit or transmission wire of remote controller Set one of the remote controllers main if there is no problem with the action above Check wiring of remote controller Total wiring length Max 500m Do not use cable x 3 or more lt The number of connecting indoor units Max 16 units lt The number of connecting remote controller Max 2 units When it is not the above mentioned problem of O Diagnose remote controllers a When RC OK is displayed Remote controllers have no problem Turn the power off and on again to check If abnormality generates again replace indoor controller board b When RC NG is displayed Replace remote controller c When RCE3 or ERCO0 66 is displayed noise may be causing abnormality Note If the unit is not normal after replac ing indoor controller board in group control indoor controller board of address 0 may be abnormal Remote controller control board Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board Error code E1 Abnormal if the clock function of remote controller cannot be normally operated Error code E2 OCH526B Defective remote controller 38 Replace remote controller Error Code Abnormal point and detection method Case Ju
216. tor lt Connection for Option gt TH32 Thermistor lt Suction gt 52C 52C Relay CNM Connector lt Connection for Option gt TH33 Thermistor lt Ref check gt C B Controller Circuit Board LED1 LED2 LED lt Operation Inspection Indicators gt TH34 Thermistor lt Comp Surface gt Switch lt Manual Defrost Defect History F1 F2 F3 F4 Fuse lt T6 3AL250V gt LEV A LEV B LEV C Linear Expansion Valve SW1 Record Reset Refrigerant Address gt X51 X52 X54 Relay LEV C When M NET adapter is connected 63H 63L LEV A LEV B M 6946 M 7 3121 4 TH33 TH32 TH7 6 YLW BLK RED 1 31 5 CNVMNT CNMNT WHT WHT SWS 1 321 1 51 THA 63HS TH34 LEV A LEV B WAT WHT RED WHT RED 9009009909000090 an a fay Be el CNM 14 WHT SW4SWP SW8 RO Aaa BREE aw a onsi cnom cnas RWNWWUMHBUH WHT WHT WHT a esos sss ooo M NET ADAPTER CN2M WHT
217. trap for lead wires in the electrical parts box 4 Loosen clamp for the lead wire for TH3 5 Pull out the thermistor lt Liquid gt TH3 thermistor lt Suction gt TH32 and thermistor lt Ref check gt TH33 from the sen sor holder TH32 See Photo 6 TH33 See Photo 8 Separator 4 Compressor MC Thermistor lt Discharge gt TH4 Photo 7 Clamp Thermistor for TH3 lt Liquid gt TH3 Thermistor Power lt Comp surface gt receiver TH34 120 OCH526B OPERATING PROCEDURE PHOTOS 8 Removing the 4 way valve coil 21S4 and linear expansion valve coil LEV A LEV B LEV C 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 Removing the 4 way valve coil 9 Remove 4 way valve coil fixing screw M5 x 6 4 Remove the 4 way valve coil by sliding the coil toward you Loosen the clamp for lead wires on the separator Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 5 Disconnect the connector 21S4 green on the controller cir cuit board in the electrical parts box Removing the linear expansion valve coil 9 Remove the linear expansion valve coil by sliding the coil upward Loosen the clamp for lead wires on the separator Loosen 3 fasteners and the cable strap for lead wires in the electrical parts box 4 Disconnect the connectors LEV A white LEV B red and LEV C blue on the controller c
218. ts signal to indoor unit while outdoor unit power supply of one refrigerant system is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 42 Always try the followings when the error A7 occurs Turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If malfunction was accidental the unit returns to normal Check address switch of abnormality generated address Check disconnection or looseness of abnormality generated or abnormality detected transmission wire terminal block and connector Check if tolerance range of transmission wire is not exceeded Check if type of transmission wire is correct or not If there were some trouble of O above repair the defect then turn off the power supply of outdoor unit indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If there was no trouble with above in single refrigerant system 1 outdoor unit controller of displayed address or attribute is defective lt If there was no trouble with Q above in different refrigerant system 2 or more outdoor units jud
219. ts up lt 00 gt minutes during system startup Normal ee EA blink Incorrect connection of outdoor terminal block L1 L2 L3 and After power is turned on PLEASE WAIT alternately lt F1 gt 1 S2 S9 is displayed for 3 minutes then error code is displayed Cause After startup is displayed green once and red twice blink e Outdoor unit s protection device connector is open alternately lt F3 F5 F9 gt After startup is displayed e Incorrect wiring between the indoor and outdoor unit Polarity green twice and red once blink is wrong for S1 S2 S3 alternately lt EA Eb gt e Remote controller transmission wire is short e There is no outdoor unit of address 0 Address is other than 0 e Remote controller transmission wire is open Display appears but soon disappears After startup is displayed only After canceling function selection operation is not possible for even when remote controller is operated _ green lights up lt 00 gt about 30 seconds Normal No display appears even when remote controller operation switch is turned on Operation lamp does not light up After startup is displayed only green lights up lt 00 gt Note Press the remote controller s CHECK button twice to perform self diagnosis See the table below for the contents of LCD display Contents of inferior phenomena Contents of inferior phenomena Abnormality of
220. ty by tester Replace the parts if the parts are defective Replace outdoor controller circuit board 63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply 63H High pressure switch OCH526B Disconnection or contact failure of 63H connector on outdoor controller circuit board Disconnection or contact failure of 63H 63H is working due to defective parts Defective outdoor controller circuit board 32 Check connection of 63H connector on outdoor controller circuit board Refer to 10 9 Check the 63H side of connecting wire Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board Error Code Abnormal point and detection method Case Judgment and action 2 connector open Abnormal if both 63H and 63L connector circuits are open for three minutes continuously after power supply 63H High pressure switch 63L Low pressure switch Disconnection or contact failure of connector 63H 63L on outdoor controller circuit board Disconnection or contact failure of 63H 63L 63H and 63L are working due to defective parts Defective outdoor controller board Check connection of connector 63H 63L on outdoor controller circuit board Refer to 10 9 Check the 63H and 63L side of connecting wire Check continuity by tester Replace the p
221. uit board Defective outdoor controller circuit board Correction of a model select Replace outdoor power circuit board Replace outdoor controller circuit board Overheat protection Abnormal if TH3 condensing temperature TesHs detects 70 C or more during com pressor operation TH3 Thermistor lt Liquid gt Defective outdoor fan fan motor or short cycle of outdoor unit during cooling operation Defective TH3 condensing temperature TesHs Defective outdoor controller board Check outdoor unit air passage Turn the power off and on again to check the error code If U4 is displayed follow the U4 processing direction Abnormal pressure of 63HS Abnormal if 63HS detects 0 1 MPa or less Detection is inoperative for 3 minutes after compressor starting and 3 minutes after and during defrosting 63HS High pressure sensor Disconnection or contact failure of connector 63HS on the outdoor controller circuit board Defective pressure sensor Defective outdoor controller circuit board Check connection of connector 63HS on the outdoor controller circuit board Check breaking of the lead wire for 63HS Check pressure by microprocessor Pressure sensor 63HS SW2 Refer to 10 10 Replace outdoor controller board Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after co
222. unction This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit Something is wrong with the blower The fan speed does not match the setting of the remote controller during DRY operation No air comes out sometimes during DRY operation This is not a malfunction During the DRY operation the blower s ON OFF is controlled by the microprocessor to prevent overcooling and to ensure efficient dehumidification The fan speed cannot be set by the remote controller during DRY operation The fan speed does not match the setting of the remote controller in HEAT operation OCH526B This is not a malfunction 1 When the HEAT operation starts to prevent the unit from blowing cold air the fan speed is gradually increased from zero to the set speed in proportion to the temperature rise of the discharged air 2 When the room temperature reaches the set temperature and the outdoor unit stops the unit starts the LOW AIR operation 3 During the HEAT operation the DEFROST operation is performed to defrost the outdoor unit During the DEFROST operation the blower is stopped to prevent cold air coming out of the indoor unit 52
223. unit connecting wire Turn the power off and on again to check Replace outdoor controller circuit board if abnormality is displayed again Non defined error code This code is displayed when non defined error code is received Noise has entered transmission wire of remote controller Noise has entered indoor outdoor unit connecting wire Outdoor unit is not inverter models Model name of remote controller is PAR S25A Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again Replace outdoor unit with inverter type outdoor unit Replace remote controller with MA remote controller Serial communication error Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective Abnormal if communication between outdoor controller circuit board and M NET board is not available OCH526B Breaking of wire or contact failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board Breaking of wire or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board Defective communication circuit of outdoor power circuit board Defective communication circuit of outdoor controller circuit board for outdoor power circuit board O Breaking of
224. unit model SHW80V SHW112V SHW112 140Y E N single N single 3N 3 ph 4 wires Outdoor unit power supply 50 i sca 50 He aie s He 400 V i Outdoor unit input capacity Main switch Breaker J 32A 40A 16A x lt gt Outdoor unit power supply 3 Min 4 3 x Min 6 5 x Min 1 5 2 S E Indoor unit Outdoor unit 42 3 x 1 5 Polar 3 x 1 5 Polar 3 x 1 5 Polar p y Indoor unit Outdoor unit earth 2 1 x Min 1 5 1 x Min 1 5 1 x Min 1 5 a Remote controller Indoor unit 3 2 x 0 3 Non polar 2 x 0 3 Non polar 2 x 0 3 Non polar o Outdoor unit L N single m Outdoor unit L1 N L2 N L3 N 3 phase 4 AG 230W ne 280M AC 290 Indoor unit Outdoor unit S1 S2 4 AC 230 V AC 230 V AC 230 V Indoor unit Outdoor unit S2 S3 4 DC 24V DC 24 V DC 24 V 2 Remote controller Indoor unit 4 DC 12V DC 12 V DC 12 V 1 A breaker with at least 3 0 mm contact separation in each pole shall be provided Use earth leakage breaker NV Make sure that the current leakage breaker is one compatible with higher harmonics Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter The use of an inadequate breaker can cause the incorrect operation of inverter 2 SHW80 140 Max 45 m If 2 5 mm used Max 50 m If 2 5 mm used and S3 separated Max 80 m 3 The 10 m wire is attached in the remote controller accessory 4 The figures are NOT always against the ground S3 termin
225. ure error service manual 9 E4 E5 Remote controller signal receiving error 10 11 12 Fb Indoor unit control system error memory error etc 14 PL Abnormality of refrigerant circuit _ E0 E3 Remote controller transmission error _ E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Number of times Symptom Remarks Indoor outdoor unit communication error 1 E9 Transmitting error Outdoor unit 2 UP Compressor overcurrent interruption 3 U3 U4 Open short of outdoor unit thermistors 4 UF Compressor overcurrent interruption When compressor locked 5 U2 Abnormal high discharging temperature insufficient refrigerant For details check 6 U1 Ud Abnormal high pressure 63H operated Overheating the LED display j protection operation of the outdoor 7 U5 Abnormal temperature of heatsink controller board 8 U8 Outdoor unit fan protection stop 9 U6 Compressor overcurrent interruption Abnormal of power module 10 U7 Abnormality of superheat due to low discharge temperature 11 U9 UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error 12 13 14 Others Other errors Refer to the technical manual for the outd
226. utput voltage among phases U V W during test run No defect on board if voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency Check compressor Refer to 10 6 Replace outdoor power circuit board Check the dip switch setting of outdoor controller circuit board Remote controller transmission error E0 signal receiving error E4 Abnormal if main or sub remote controller cannot receive normally any transmission from indoor unit of refrigerant address 0 for 3 minutes Error code E0 Abnormal if sub remote controller could not receive any signal for 2 minutes Error code E0 Abnormal if indoor controller board can not receive normally any data from remote controller board or from other indoor controller board for 3 minutes Error code E4 Indoor controller board cannot receive any signal from remote controller for 2 minutes Error code E4 Contact failure at transmission wire of remote controller All remote controllers are set as sub remote controller In this case EO is displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant address 0 Noise has entered in
227. ved alt iel controller is PLEASE WAIT the remote controller is disabled Operan MOJE are dISpiayedarermnaley f Wait until PLEASE WAIT disappears before using remote controller Displays the remaining Turn on the main power supply PLEASE WAIT appears for about 2 minutes after power test run time supply is turned on r Press TEST button twice The TEST RUN appears on the screen Cooling mode Check if cool air blows and water is drained Press OPERATION SWITCH Heating mode Check if warm air blows It takes a little fe MITSUBISHI ELECTRIC Test BUN button while until warm air blows 4 Press AIR DIRECTION Jbutton Check for correct motion of auto vanes 5 5 Check the outdoor unit fan for The outdoor unit features automatic capacity control to provide optimum fan speeds Therefore the fan keeps correct running running at a low speed to meet the current outside air condition unless it exceeds its available maximum power Then in actuality the fan may stop or run in the reverse direction depending on the outside air but this does not TEST button mean malfunction 6 Press the ON OFF button to reset the test run in progress Pipe liquid temperature Register the contact number lt In case of test run
228. wire or contact failure of connector between outdoor controller circuit board and M NET board Contact failure of M NET board power supply line Noise has entered into M NET transmission wire 39 MO Check connection of each connector CN2 and CN4 between the outdoor controller circuit board and the outdoor power circuit board Replace outdoor power circuit board Replace outdoor controller circuit board Check disconnection looseness or breaking of connection wire between outdoor controller circuit board CNMNT and M NET board CNS Check disconnection looseness or breaking of connection wire between outdoor controller circuit board CNMNT and M NET board CND Check M NET transmission wiring method Error Code Abnormal point and detection method Case Judgment and action Freezingloverheating protection is working Overheating protection lt Heating mode gt Abnormal if condensing temperature of 63HS detects Tcond C or more and compressor operation frequency is less than or equal to 25 Hz Detection is inoperative during defrosting 63HS High pressure sensor Overcharge of refrigerant Defective refrigerant circuit clogs Malfunction of linear expansion valve Reduced water flow Clogged filter Leakage of water High temperature Over load Inlet water is too warm Defective water pump is in the case that the unit is used

SERVICE MANUAL - Aire Acondicionado Mitsubishi Electric

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