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Service Manual - Atexxo Manufacturing

1. R11858 175 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Step Procedure 7 Release the harness R11859 8 Cutthe clamps at the 2 locations 2 R11860 9 Disconnect the connector for the filter PCB S10 R11861 Removal Procedure 176 Outdoor Unit RK X S20 25 35J2V1B Step Procedure 10 Disconnect the connectors for the magnetic relay S50 and
2. R12316 Removal Procedure 226 Outdoor Unit RK X 50J2V1B SiBE041101 Step Procedure 13 Release the harness of the outdoor temperature thermistor from the hook 14 Lift and remove the electrical box Electrical box n d Lc 227 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B 4 4 Removal of PCB Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Sie Procedure Points 1 Disconnect the Preparation connectors from the ag 552 5102 co Remove the electrical box service monitor PCB A according to the Removal of mE Electrical Box 2 Detach the 4 clamps with pliers I E 9887 NAO i 3 bof Clamps _ co R5281 3 Remove the screws of the terminal board and the earth wire Hyr a KEN iM LEN Earth wire R12285 Terminal board Removal Procedure 228 Outdoor Unit RK X 50J2V1B SiBE041101 Ste Procedure 4 Unfasten the hook on the right 5 Open the terminal 6
3. Discharge grille Front panel R9363 191 Removal Procedure SiBE041101 Remove the 4 screws and remove the discharge grille Remove the screw and remove the stop valve cover Removal Procedure Outdoor Unit RK X S42J2V1B Procedure Points When reassembling make sure to fit the 4 hooks Tu o g il Eu RM T y T The stop valve cover is united with the shield plate When reassembling make sure to fit the 5 hooks 192 Outdoor Unit 642 2 1 SiBE041101 3 2 Removal of Electrical Box Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step 7 Procedure 1 Disconnect the When reassembling fasten connecting wires the wires with screws the Remove the 3 screws A Tanina terminal board to remove the wiring board fixture e Then remove the all Connecting f DE screws to disconnect supply ihe power supply TER cables and the Wiring fixture connecting wires
4. 18 Part 4 Function and 20 1 FUNCUON S e vate eie tid 21 Temperature Control ot toa sabes oe i 21 1 2 Frequency sisi iater bod tdi addet ed iata e 21 159 AMW Directo ote olet MEIN 23 1 4 Fan Speed Control for Indoor 24 125 Program Diy OPeratl ON te EU debuts 25 1 6 Automatic nennen nnns 26 1 Dhernnosiat COohlolsesuiseuacteu mni nut 27 18 NIGHT SET Mode y Cu Ea raa ER 28 19 NO ODS ates Mte pa ba sa 29 1 10 2 Area INTELLIGENT EYE Operation 30 1 11 Inverter POWERFUL Operation 32 eA Other FUNC WOM S 33 2 Function of Thermistor 34 Oe COMIOl SDSS IN CANON ETT SS 35 221 Mises dba D E aod reos etus 35 22 nsns asa doque tn 36 3 3 Controls at Mode Changing 38 3 4 Discharge Pipe Temperature
5. 223 Removal Procedure SiBE041101 Procedure Disconnect the 2 earth wires Remove the 3 screws of the right side panel Remove the screw of the electrical box Removal Procedure YN ME Earth wires Su Outdoor Unit RK X S50J2V1B 224 Outdoor Unit RK X 50J2V1B SiBE041101 Ste Procedure 7 Unfasten the hooks and When reassembling insert remove the right side the 2 hooks of the lower part panel and the 1 hook of the upper back AS S NEN R5273 8 Disconnect the connectors of the front side S20 electronic expansion valve coil S40 overload protector S80 four way valve coil S90 thermistors S40 S20 S90 S80 9 Disconnect the relay connector for the compressor 225 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Step Procedure Points 10 Release the clamp of the compressor relay harness with pliers Compressor relay harness 11 Detach the clamp and release the thermistor lead wires from the hook 12 Remove the screw
6. Slide the left rotary shaft to the right and release it Rotary shaft Slide the right rotary shaft to the left and release it R7909 Remove the front panel R7910 Removal Procedure 136 Indoor Unit 137 Procedure When mounting the front panel make sure that the shaft is fitted in the guide before closing the panel SiBE041101 Caution on Mounting When mounting the front panel fit the right and left rotary shafts one by one into the grooves and fully push them in position R7908 Removal Procedure SiBE041101 Indoor Unit 1 3 Removal of Front Grille Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Pons 1 Remove the service cover 1 Remove the screw of Preparation the service cover Remove the front panel according to the Removal of Front Panel 2 Pull out the service cover diagonally down in the direction of the arrow 3 The figure shows the appearance of the inside Removal Procedure 138 Indoor Unit Step Procedure 2 Remove the front grille Remove the 2 screws one each at the right and left The front grille has 3 hooks at the top Unfasten the le
7. mi A WQS T a 75 A Q 5 Mis S LZ 4 7 A 2 N CN Z L 4 lt 7 lt lt S m d Sound blanket 5 Pull the sound blanket bottom out Sound blanket bottom R11888 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B 2 6 Removal of Four Way Valve Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Sie Procedure 1 Pull out the electronic expansion valve coil 2 Remove the terminal Un lt 8 7S N E uL NY 3 Disconnect the lead P wires of the Red U 27 4 compressor ZZ _ 7235 Removal Procedure Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Procedure Remove the screw and remove the four way valve coil Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Four way valve coil Cautions for r
8. 40 3 5 Input Current 41 3 6 Freeze up Protection 42 3 7 Heating Peak cut 42 3 6 Outdoor Fan ace a 43 3 9 Liquid Compression Protection 43 S TO DEIOST 44 3 11 Electronic Expansion Valve 45 12 MaITURIGHOT NS a 48 Table of Contents li SiBE041101 Part 5 Operation 49 1 2 oystem GonfigufallglTs saco eme RE SANE 50 Manua 51 2 1 scitu dtt east 51 22 AUTO DRY COOL HEAT FAN Operation 52 2 3 Adjusting the Airflow 54 2 4 COMFORT AIRFLOW and INTELLIGENT EYE Operation 56 25 iip doeet ee 60 2 6 OUTDOOR UNIT QUIET 61 2 D IE ETE 62 2 9 ORE TIMER OPC ratio in ose et eda
9. ERR RR RR a OT i SETTE 249 diia uec 249 E2AESU sESU 250 25 WNI Diagram 254 22 E UL EU 254 2 2 Outdoor Unit V Table of Contents SiBE041101 Introduction 1 Introduction 1 1 Safety Cautions Cautions and B Be sure to read the following safety cautions before conducting repair work Warnings m The caution items are classified into N Warning and N Caution The N Warning items are especially important since they can lead to death or serious injury if they are not followed closely The AN Caution items can also lead to serious accidents under some conditions if they are not followed Therefore be sure to observe all the safety caution items described below B About the pictograms This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must be paid This symbol indicates the prohibited action The prohibited item or action is shown in the illustration or near the symbol e This symbol indicates the action that must be taken or the instruction The instruction is shown in the illustration or near the symbol After the repair work is complete be sure to conduct a test operation to ensure that the equipment operates normally and explain the cautions for
10. LEAVE Operation oP ECONO Operation OPO J 3 O POP oO Remote Control Adaptor Note O Holding Functions No Functions 3 List of Functions SiBE041101 Part 2 Specifications 1 SOC CHIC ATION ce Ee 5 Eo euer 5 TZ Heat la tree aa 7 Specifications 4 Specifications SiBE041101 1 Specifications 1 1 Cooling Only 50 Hz 220 230 240 V Indoor Unit FTXS20J2V1B FTXS25J2V1B FTXS35J2V1B RKS20J2V1B RKS25J2V1B RKS35J2V1B TUNE 2 0 1 3 2 8 25 1 3 3 2 3 5 1 4 4 0 ated Mi Rated Min Max 6 800 4 400 9 600 8 500 4 400 10 900 11 900 4 800 13 600 kcal h 1 720 1 120 2 410 2 150 1 120 2 750 3 010 1 200 3 440 Removal mo o o 787 783 781 888 890 896 Connections 095 018 0 Heat insulation indoor Unit O O o FIXS2UNiB FIXS2JNiB FIXS3SJAVIB Front Panel Color min DENIS Air Direction Contro Air Filter Temperature Control wna e 39 oo 0 Outdoor Unit Casing Color Compressor M rup 80 8 amp 0 oi PR 362 1278 DU 32 7 1 155 p BA Note B The data are based on the conditions shown in the table below Indoor 27 CDB 19 CWB Btu h kW x 3412 Outdoor 35 CDB 24 CWB cfm m3
11. PowerAiriow Diffuser 24 Jolo WdeAndelowes O NGHTSETMode CO Vertical Auto Swing Up Down 0 WomyFree Aute Restat afterPowerFalue O Horizontal Auto Swing Right Le O O etit DAiflow Wiring Error Check Function Error con Anti Corrosion Treatment of Outdoor COMFORT AIRFLOW Operation Heat Exchanger D Comfort Flexibility Multi Split Split Type Compatible Indoor Unit Indoor Unit Quiet Operation Indoor Unit Quiet Operation H P C O Compatible Indoor Unit NIGHT QUIET Mode Automatic Flexible Power Supply Correspondence Fp OUTDOOR UNIT QUIET Operation 10 10 pus ofo fomes 2 Area INTELLIGENT EYE Operation O O Either Side Drain Right or Left INTELLIGENT EYE Operation PowerSelection Quick Warming Function Preheating EXE Remote 5 Room Centralized Controller Option Operation Control Remote Control Adaptor Horsta Function Jofo Normal Open Pulse Contact Option Automatic Defrosting Operation Automatic Operation Normal Open Contact Option Program Dry Operation ESZE G DIII NET Compatible Adaptor Option Lifestyle New POWERFUL Operation Controller Convenience Non Inverter SS Wired Option Inverter POWERFUL Operation _ O Priority Room Setting PP COOL HEAT Mode Lock 0
12. 2 5 oni et eee oe 25 1 0 26 127 Themiosiat sn 27 L9 MOOR oer taa oe Ed Duero E d 28 1 9 ECONO Ope Fallon 29 1 10 2 Area INTELLIGENT EYE Operation 48440400 30 1 11 Inverter POWERFUL Opoeratlon rt 32 LIZ hier FUNCTIONS esce tese qoae i eo met landat 33 2 Funcion Of doce EO 34 3 Gontrol 2 35 251 Mode FMEA CNY T 35 S2 36 3 3 Controls at Mode Changing 38 3 4 Discharge Pipe Temperature 40 3 5 Input G rrent 41 3 6 Freeze up Protection 42 3 7 He a ng Pealecut etit e xs acter etek euh doces 42 30 Outdoor FarrGObllOl duae cates Ra teret ett 43 3 9 Liquid Compression Protection 43 Defr
13. 642 2 1 3 8 Removal of Compressor Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work step Procedure Pens 1 Remove the terminal cover iv d N 2 Disconnect the lead wires of the compressor D RN 2 77 EN AGA p T ec SIN Unfasten the hooks with a flat screwdriver to remove the overload protector Removal Procedure 212 Outdoor Unit 642 2 1 Remove the protection bushing Remove the 2 nuts of the compressor Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed Heat up the brazed part of the discharge side and disconnect Heat up the brazed part of the suction side and disconnect Procedure US nli illl eFeeq P lt 1 Protection bushing il 4 dy B rae NI 0265 ES Y 525 v SiBE041101 Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames t
14. Outdoor Unit RK X S50J2V1B Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Warning Since it may happen that the refrigerant oil in the compressor catches fire prepare wet cloth so as to extinguish fire immediately Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas 236 Outdoor Unit RK X S50J2V1B Step Procedure Hemove the 2 nuts of the compressor MIHI ES n D 1 IM 11 HI IP Wan 1 11 Heat up the brazed of the discharge side and disconnect Heat up the brazed part of the suction side and disconnect Lift the compressor up and remove it 237 SiBE041101 Cautions for restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120
15. 95 4 13 Four Way Valve 01 00 96 4 14 Discharge Pipe Temperature 98 4 15 High Pressure Control in 100 4 16 Compressor System Sensor Abnormality 101 4 17 Position Sensor Abnormality esses 103 4 18 DC Voltage Current Sensor Abnormality 20 25 35 42 Class 106 4 19 CT or Related Abnormality 50 107 4 20 Thermistor or Related Abnormality Outdoor 109 4 21 Electrical Box Temperature 111 4 22 Radiation Fin Temperature Rise 113 4 23 Output Overcurrent Detection 115 4 24 Refrigerant 117 4 25 Low voltage Detection or Over voltage Detection 120 4 26 Signal Transmission Error on Outdoor Unit PCB 50 Class Only 122 ele c 123 5 1 Fan Motor Connector Output Check 04080111 3 123 5 2 Electronic Expansion Valve 123 5 3 Four Way Valve Performance 0 124 5 4 Thermistor Resistance 125 5 5 Installation Condition 126 5 6
16. eau 63 2 32 ON TIMER s notte eut merece 64 2 10 WEEKEY TIMER E 65 Part 6 Service 7 1 2 3 4 Troubleshooting with LED Deere tou ants D e dua aute es 75 ME Ndoo UN t 75 UE SU dm 75 Problem Symptoms and 76 Service Check FONCION sese cde e 77 31 52 Seles ER ED 77 TFOUDIGSHOOUING 80 4 1 Error Codes and Description 80 42 Indoor Unit PCB Abnorrmalily ie e EU teins Rabe oce eus 81 4 3 Freeze up Protection Control or Heating Peak cut Control 82 44 Fan Motor DC Motor or Related Abnormality 84 4 5 Thermistor or Related Abnormality Indoor Unit 86 4 6 Signal Transmission Error between Indoor Unit and Outdoor Unit 87 4 7 Unspecified Voltage between Indoor Unit and Outdoor Unit 88 4 8 Outdoor Unit 89 4 9 OL Activation Compressor 92 410 8 HOCK en th ocak esa tov hae 93 411 DG Fan Eo6kusaoictu
17. 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following function Pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency For Heat Pump Model CS 2 Determine command frequency Command frequency is determined in the following order of priority Limiting defrost control time Forced cooling Indoor frequency command 36 Control Specification 37 SiBE041101 2 Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency Indoor Frequency Command AD signal The difference between the room thermistor temperature and the target temperature is taken as the AD signal and is used for frequency command Temperature AD Temperature AD Temperature AD Temperature AD difference signal difference signal difference signal diff
18. lt Va Service Diagnosis Troubleshooting Be sure to turn off power switch before connecting disconnecting Caution connectors or parts may be damaged Reconnect the connectors or thermistors Replace the defective one s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Replace the indoor heat exchanger thermistor Replace the outdoor unit PCB Replace the indoor unit PCB R11905 110 Troubleshooting SiBE041101 4 21 Electrical Box Temperature Rise Remote i 3 Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off Detection Malfunction m With the compressor off the radiation fin temperature is above A C Decision B The error is cleared when the radiation fin temperature drops below C Conditions B Tocoolthe electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B C 20 25 36 98 75 _ aos 80 70 75 _ socas 95 s _ Supposed Defective outdoor fan motor Causes Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB 111 Service Diagnosis SiBE041101 Troubleshooting Troubleshooting N Be sure to turn off the power switch before c
19. 42 class 1865 71 12266 Service Diagnosis 132 133 SiBE041101 Part Removal Procedure bs nian E Sun Mel 134 12 ACFE ta ETE 134 122 Removal f Front PaViel dieses 136 1 8 Removal of Front Grille me 138 1 4 Removal of Horizontal Blades Vertical Blades 141 1 5 Removal ofr Electrcab BOX px Cer euet Cod 144 tO Removal OP POBS ii bie nido idein nitet ehe uo ec 147 1 7 Removal of Indoor Heat Exchanger 152 1 9 Removal or SWING MOONS eec 155 19 Removal ol Fam MOIO ases latent cR UM US 159 2 Outdoor Unit 520 25 35 2 1 162 2 1 Removal of Outer Panels Fan 162 2 2 Removal or Electrical BOX waded 171 213 Removal ol POBS einst 174 2 4 Removal of Reactor Partition 182 2 5 Removal of Sound Blankets oce oret eo ae ke 184 2 6 Removal of Four Way ValVe ei etui pei pte ida 186 2 7 Removal Of Compressor tos m to dme estate tu duds 189 3 Outdoor Unit
20. Detail Function and Control Frequency is determined according to the difference between the room thermistor temperature and the target temperature The function is explained as follows 1 2 How to determine frequency Frequency command from the indoor unit Difference between the room thermistor temperature and the target temperature Frequency initial setting PI control When the shift of the frequency is less than zero lt 0 by PI control the target frequency is used as the command frequency Drooping function Input current control etc Upper limit frequency Upper limit function FMAX lt Compressor protection function Command frequency Limit frequency Skip control Target frequency Initial frequency Lower limit frequency Lower limit function FMIN Four way valve operating compensation etc Defrost control only for heat pump model control R11592 How to Determine Frequency The compressor s frequency is determined by taking the following steps For Cooling Only Model 1 N Determine command frequency Command frequency is determined in the following order of priority 1 Forced cooling 2 Indoor frequency command Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature freeze up protection
21. Resistance 20 0 4 2 Ho E 8 0 818 4 50 4 0 9 7 4 4 ROS CZ 20 B 3950 R11905 Resistance range R11906 m For the models in which the thermistor is directly mounted on the PCB disconnect the connector for the PCB and measure Service Diagnosis SiBE041101 Check 5 5 Installation Condition Check Check No 07 Installation condition check Check the allowable dimensions of the air suction and discharge area Abnormal Change the installation location or direction Normal Is the discharged air short circuited Change the installation location or direction Is the outdoor heat YES exchanger very dirty Clean the outdoor heat exchanger Is the airflow blocked by obstacles or winds blowing in the opposite direction Change the installation location or direction Check the outdoor temperature The outdoor temperature should be 46 C or lower R9459 5 6 Discharge Pressure Check Check No 08 Service Diagnosis Discharge pressure check NO Replace the compressor YES Is the stop valve open Open the stop valve Is the connection pipe deformed Replace the pipe installed at the site Is the air filter or indoor outdoor heat exchanger dirty Not dirty Clean the dirty one Replace
22. WITH FILTER 51 VALVE 54 NORMALLY OFF MUFFLER MUFFLER FIELD PIPING 6 4CUT gup 64 CuT DISCHARGE PIPE 12 7CuT STOP valvel THERMISTOR 75 12 7 FIELD PIPING 2 12 7 CuT GAS STOP VALVE 3D051636Q Appendix SiBE041101 Piping Diagrams 1 2 2 Heat Pump RXS20J2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR 2 7 0CuT lo HEAT EXCHANGER THERMISTOR MOTOR OPERATED 7 0CuT 6 4CuT 6 4 GE v MUFFLER MUFFLER WITH WITH FILTER FILTER o x 8 5 MUFFLER 9 WITH J _FILTER 5 S VALVE 8 tli FIELD PIPING S pe LIQUID STOP 6 4CuT VALVE MUFFLER DISCHARGE PIPE THERMISTOR 0 s E 95CuT 25CuT e FELD PIPING MH ACCUMULATOR MUFFLER MUFFLER GAS STOPI COOLING HEATING 3D059587B RXS25 35J2V1B OUTDOOR UNIT zm OUTDOOR TEMPERATURE 7 HEAT EXCHANGER THERMISTOR 9 5CuT HEAT EXCHANGER 77777 THERMISTOR MOTOR OPERATED Qum 4 8CuT VALVE OD 4 8CuT MUFFLER MUFFLER 5 WITH WITH 9 FILTER FILTER a ir E FAN I E 8 o WITH FILTER 5 E NO Is VALVE E tli a FIELD PIPING e i LIQUID STOP 6
23. 17 59 SiBE041101 Operation Manual 2 5 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling heating effect in any operation mode You can get the maximum capacity B To start POWERFUL operation 1 Press POWERFUL operation ends in 20 minutes Then the system automatically operates again with the previous settings which were used before POWERFUL operation is displayed on the LCD To cancel POWERFUL operation POWERFUL 2 Press again 292 disappears from the LCD NOTE B Notes on POWERFUL operation When using POWERFUL operation there are some functions which are not available POWERFUL operation cannot be used together with ECONO COMFORT AIRFLOW or OUTDOOR UNIT QUIET operation Priority is given to the function of whichever button is pressed last POWERFUL operation can only be set when the unit is running POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonstrated COOL HEAT and AUTO mode To maximize the cooling heating effect the capacity of outdoor unit is increased and the airflow rate is fixed to the maximum setting The temperature and airflow settings are not variable In DRY operation The temperature setting is lowered by 2 5 C and the airflow rate is slightly increased
24. 4 12 7 1 M 12 7CuT 9 5CuT RECEIVER 7 9CuT MUFFLER ON HEATING MUFFLER FIELD PIPING 7 9CuT Y 6 4CUT 6 4 MUFFLER STOP VALVE 2 iii 75 12 7CuT mm PIPIN DISCHARGE PIPE eJ pve 12 7 TUM THERMISTOR GAS STOP VALVE COMPRESSOR WITH SERVICE PORT 253 300516375 Appendix SiBE041101 Wiring Diagrams 2 Wiring Diagrams 2 1 Indoor Unit FTXS20 25 35 42 50J2V1B 1 X1M BLK e 11 3 2 3 OUTDOOR FIELD WIRING CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY GRN B BN TRANSMISSION CIRCUIT M2S IS TURNED OFF AND THEN BACK ON AGAIN RED BZ BUZZER S C101 C102 CAPACITOR FG FRAME GROUND S25 ER F1U FUSE ORG H1TP H3P PILOT LAMP WHT MRIO MAGNETIC RELAY MIF MIF FAN MOTOR M1S M3S SWING MOTOR PCB1 PCB4 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR 51 549 CONNECTOR SW1 OPERATION SWITCH WIRELESS LL INDoon V1 VARISTOR isi X1M TERMINAL STRIP PROTECTIVE EARTH 300582460 2 2 Outdoor Unit RK X S20 25 35J2V1B fey FIE
25. Fan speed setting Remote controller Fan rpm is set to 0 Fan stop The unit does not resume operation after recovering from a power failure Timer ON OFF settings are cleared Reinforced control ex The frequency increases the duration time of defrost lengthens OFF factory sel SW4 C Improvement of on outdoor unit PCB defrost performance of 50 class For the location of the switch refer to page 19 Trial Operation and Field Settings Standard control Reinforced control ex The frequency increases the duration time of defrost lengthens 246 Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE041101 5 Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable Models Details lt Example gt 247 All outdoor units using inverter type compressor for room air conditioner When the printed circuit board PCB of an outdoor unit is replaced it is required that silicon grease 1 is certainly applied to the heat radiation part the contact point to the radiation fin of the power transistor and diode bridge 1 Parts number of the silicon grease 1172698 Drawing number 3FB03758 1 The silicon grease is an essential article for encouraging the heat radiation of the power transistor and the diode bridge Applying the paste should be implemented in accordance with the following instruction Remark There is the possibility o
26. Procedure 2 Remove the horizontal blade small 1 Unfasten the center shaft while bending the horizontal blade small slightly 2 Unfasten the left shaft R7926 Unfasten the key alignment shaft at the right side R7927 X Th 3 Remove the fan guards 1 Unfasten the hooks at the lower part of the fan guard with a flat screwdriver 2 Remove the fan guard i WE Removal Procedure Indoor Unit SiBE041101 Step Procedure Points 4 Remove the vertical blade ASSYS Detach the pivot from the interlock shaft for vee ene zd flat screwdriver N m ON ONO 7 ANTIE Interlock shaft R12270 Remove the interlock rod Interlock rod R10302 Unfasten the hooks at the upper 3 positions by pressing them with a flat screwdriver R10303 Remove the vertical B vertical blade ASSY has 5 blade ASSY fins It is impossible to replace only one fin B The vertical blade ASSY is not marked for difference between right and left R12269 143 Removal Procedure SiBE041101 Indoor Unit 1 5 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points The figure shows the Preparation Electrical box connections of wire Remove th
27. SiBE041101 Troubleshooting 4 13 Four Way Valve Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Z P The room temperature thermistor the indoor heat exchanger thermistor the outdoor temperature thermistor and the outdoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode A following condition continues over 1 10 minutes depending on the model after operating for 5 10 minutes depending on the model Cooling Dry room thermistor temp indoor heat exchanger temp 5 B Heating indoor heat exchanger temp room thermistor temp lt 5 If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Disconnection of four way valve coil Defective four way valve coil or harness Defective outdoor unit PCB Defective thermistor Refrigerant shortage Water mixed in refrigerant Defective stop valve 96 Troubleshooting Troubleshooting Check No 05 Refer to P 124 Check No 06 Refer to P 125 Check No 11 Refer to P 127 97 SiBE041101 Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Four way valve coil YES disconnected loose Correct it
28. When the pressure difference is large the rotation speed of the outdoor fan is increased 3 9 Liquid Compression Protection Function Outline Detail 43 In order to obtain the dependability of the compressor the compressor is stopped according to the outdoor temperature and temperature of the outdoor heat exchanger Operation stops depending on the outdoor temperature Compressor turns off under the conditions that the system is in cooling operation and outdoor temperature is below 12 Function and Control SiBE041101 Control Specification 3 10 Defrost Control Outline Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish Detail Conditions for Starting Defrost The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature B The system is in heating operation The compressor operates for 6 minutes B than A minutes of accumulated time pass since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with outdoor heat exchanger temperature J C C Hz B Hz Frequency control Hz Esec D sec F sec G sec Compressor ah r our way valve OFF 5 Fan Electronic expansion valve opening Initial opening R13533 Function and Control 44 C
29. 50 class 5 minutes without any other error Supply voltage is not as specified Defective DC voltage detection circuit Defective over voltage detection circuit Defective PAM control part Layer short inside the fan motor winding 120 Troubleshooting Troubleshooting 121 SiBE041101 Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the supply voltage Supply voltage as specified NO Correct the power supply YES Rotate the fan by hand Does the fan rotate NO smoothly Replace the fan motor or the outdoor unit PCB YES Precaution before turning on the power again Make sure the power has been off for at least 30 seconds YES Disturbance factors Noise Power supply distortion eck tor such factors for a long term Try to restart a few times Turn on the power again System restarted NO Hepeat a few times Replace the PM1 Replace the outdoor unit PCB R8402 Service Diagnosis SiBE041101 Troubleshooting 4 26 Signal Transmission Error on Outdoor Unit PCB 50 Class Only ni Fo Remote Controller Display Method of Communication error between microcomputer mounted on the main microcomputer and PM1 Malfunction Detection Malfunction B The abnormality is determined when the data sent from the PM1 can not be received for 9 Decision seconds
30. C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect Note B Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals the name plate the heat exchanger fin Removal Procedure SiBE041101 Part 8 Trial Operation and Field Settings 1 Pump DOWN Operationen 239 2 Forced Cooling d 240 Sc OBL dob uester ife be EE e E 242 243 4 1 Model Type oe ee cia oO Dee 243 4 2 When 2 Units are Installed in 1 2493 4 3 Standby Electricity 244 4 4 Facility Setting Jumper and Switch cooling at low outdoor 245 4 5 Jumper and Switch 246 5 Application of Silicon Gr
31. Conditions The error counter is reset when the data from the PM1 can be successfully received Supposed Defective outdoor unit PCB Causes Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power and turn it on again YES Error again Replace the outdoor unit PCB The cause can be an external factor other than the malfunction Observe the operating condition in long term R7185 Service Diagnosis 122 Check 5 Check SiBE041101 5 1 Fan Motor Connector Output Check Check No 01 oP wn gt Check the connection of connector Check the motor power supply voltage output pins 4 7 Check the motor control voltage pins 4 3 Check the rotation command voltage pins 4 2 Check the rotation pulse pins 4 1 51 Motor power supply voltage 310 340 VDC Unused Unused GND Motor control voltage 15 VDC Rotation command voltage 1 6 VDC Rotation pulse NOU QUO X OO t R12099 5 2 Electronic Expansion Valve Check Check No 04 Conduct the followings to check the electronic expansion valve EV i 2 3 4 5 Check to see if the EV connector is correctly connected to PCB Turn the power off and on again and check to see if the EV generate latching sound If the EV does not generate latching sound in the above step 2 disconnect the connecto
32. Control Specification SiBE041101 3 3 2 Four Way Valve Switching Outline In heating operation current is conducted and in cooling and defrosting current is not conducted In order to eliminate the switching sound when the heating is stopped as the four way valve coil switches from ON to OFF the OFF delay switch of the four way valve is carried out after the operation stopped Detail OFF delay switch of four way valve The four way valve coil is energized for 150 160 seconds after the operation is stopped 3 3 3 Four Way Valve Operation Compensation Outline At the beginning of the operation as the four way valve is switched the differential pressure to activate the four way valve is acquired by having output frequency which is more than a certain fixed frequency for a certain fixed time Detail Starting Conditions 1 When starting compressor for heating 2 When the operation mode changes to cooling from heating 3 When starting compressor for defrosting or resetting 4 When starting compressor for the first time after the reset with the power is ON 5 When starting compressor for heating next to the suspension of defrosting 6 When starting compressor next to the fault of switching over cooling heating Set the lower limit frequency A Hz for B seconds with any conditions 1 through 6 above 20 2535 clase e e a st ub db 5 9 3 3 4 3 minute Standby Turning on the compressor is prohib
33. Discharge Pressure beste eee 126 5 7 Outdoor Fan System 127 5 8 Power Supply Waveforms 127 5 9 Inverter Units Refrigerant System 127 Service Diagnosis SiBE041101 Service Diagnosis 5 10 Capacitor Voltage 128 5 14 IPOWwer Module Check 128 5 12 Inverter Checker 129 5 13 Rotation Pulse Check on the Outdoor Unit 131 5 14 Circuit Short Check tesa ote cibo eter estemos 132 74 Troubleshooting with LED SiBE041101 1 Troubleshooting with LED 1 1 Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages a WO SORS N mys lt O FO lt ee E S D eae m CX 262 X C SS ZX gt Operation lamp green R12187 Servi
34. FU1 FU2 FUSE N NEUTRAL Y1R REVERSING SOLENOIDE VALVE COIL BLK BLACK IPM1 INTELLIGENT POWER MODULE PCB1 PRINTED CIRCUIT BOARD Z1C Z2C Z3C BLU BLUE L LIVE Q1L OVERLOAD PROTECTOR Z4C FERRITE CORE BRN BROWN L1 COIL R1T R3T THERMISTOR PROTECTIVE EARTH GRN GREEN L1R REACTOR SA1 SURGE ARRESTER S20 S40 S70 ORG ORANGE M1C COMPRESSOR MOTOR Q31 IGBT S80 S90 RED RED X11A CONNECTOR WHT WHITE YLW YELLOW 3D059601A 255 Appendix SiBE041101 RKS50J2V1B BRN FIELD WIRING Z1C o cRN 9 E1 9 E2 MRM20 PCB2 82 e SW o 5 4 Z1C Z5C FERRITE CORE X1M X2M TERMINAL STRIP MRM10 MRM20 ELECTRONIC EXPANSION VALVE COIL MRC W MAGNETIC RELAY V2 V5 V6 V11 VARISTOR R1T R3T THERMISTOR SA2 SURGE ARRESTER 52 5102 CONNECTOR FU1 FU2 FU3 FUSE LEDA PILOT LAMP AC2 U V W X11A X12A E1 E2 HR1 HR2 CONNECTOR RXS50J2V1B 0 Wiring Diagrams BN YLW gt YLW BLU gt BLU 52 ROT RIT OUTDOOR DISCHARGE 4 CONDENSER outdoor mu OC S L LIVE M1C COMPRESSOR MOTOR N NEUTRAL M1F FAN MOTOR S
35. Outer Panels Fan Motor B Remove the electrical box according to the Removal of Electrical 2 Remove the ausi P dE Remove the 2 screws 2 TES 2273 Removal Procedure 182 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Step Procedure 2 The partition plate has a hook on the lower side Lift and pull the partition plate to remove When reassembling fit the lower hook into the bottom frame R11883 183 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B 2 5 Removal of Sound Blankets Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Remove the sound B Since the piping ports are blanket top 7 torn easily remove the sound blanket carefully N IN 4 Sound CS top S 2 Untie the string and open the sound blanket outer R11885 3 Lift and remove the sound blanket outer ay OH N di R11886 Removal Procedure 184 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Step Procedure 4 the sound blanket inner out L j By
36. Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Procedure 1 Fano wo the outdoor fan B The screw has reverse the washer reg winding fitted nut of the outdoor SN A Nut size M6 fan 4 MR Remove the outdoor R12236 R8181 fan O C T TS Gii zi G GI R8182 When reassembling align W mark of the outdoor fan with D cut section of the motor shaft S lll R8183 2 the fan motor 2 Remove tre fen the connector for the fan i LL TRES motor S70 2 s Bi 0 WY Removal Procedure SiBE041101 2 The figure shows the arrangement of the fan motor lead wire 3 Remove the 1 screw of the fan motor fixing frame 4 Remove the fan motor fixing frame Removal Procedure 99 59 lt S 2 5 EON SS a Jj Fan motor fixing frame R12202 T yd e of oF a V t FS lt 1 e yw zc Y 4 NS p Spe E nen P 2 P e Outdoor Unit RK X S42J2V1B 206 Outdoor Unit 642 2 1 SiBE041101 Sup Procedure Points 5 Turn the fan motor fixing frame backward and o
37. R12192 Cars temperature meet Release the outdoor temperature thermistor Lift up the guard net and remove it Se alt R8143 193 Removal Procedure SiBE041101 Outdoor Unit RK X S42J2V1B Sup Procedure Points 3 Remove the 7 screws and remove the right side panel 4 Remove the screw of the terminal board 5 Disconnect the connector for the fan motor S70 Removal Procedure Right side panel 41 SS 5 2 Siwy 1 BS 3 L MT a 1 m UM aC y ZD f ANY S y I Q 2 AD 2 V i INEZ En N 7 Mm 5 5 9 HH ELIT hay AY 12217 Terminal board ED R12218 B Forremoval procedure of the fan motor lead wire refer to Removal of Outdoor Fan Fan Motor 0254 194 Outdoor Unit 642 2 1 SiBE041101 Sup Procedure Points Disconnect the connector for the S40 overload protector 540 E E jae lt 0255 Disconnect the connector for the electronic expansion valve coil S20 a 5 Disconnect the con
38. it is regarded as refrigerant shortage K C C room thermistor temperature indoor heat exchanger temperature outdoor heat exchanger temperature outdoor temperature indoor heat exchanger temperature room thermistor temperature outdoor temperature outdoor heat exchanger temperature Ifthe error repeats 4 times the system is shut down Reset condition Continuous run for about 60 minutes without any other error Disconnection of the discharge pipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature thermistor Closed stop valve Refrigerant shortage refrigerant leakage Poor compression performance of compressor Defective electronic expansion valve 118 Troubleshooting SiBE041101 Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 04 Replace them in position disconnected Discharge pipe thermistor P P Indoor or outdoor heat exchanger thermistor Room temperature thermistor Check No 06 Outdoor temperature thermistor Refer to P 125 YES Stop valve closed Check for refrigerant shortage Oil oozing at relay pipe connections Open the stop valve YES Repair the pipe flare or replace the union NO Oil oozing at internal YES piping NO Compressor vibrating too much Check the power t
39. s and one s place accord with the error code 7 Determine the error code The figures indicated when you hear the beep sound are error code Error codes and description Refer to page 80 8 Press the MODE button to exit from the diagnosis mode ON OFF A c R8384 The display means the trial operation mode Refer to nage 242 for trial operation WDAIKIN R9659 9 Press the ON OFF button twice to return to the normal mode cs A R9660 m Note When the remote controller is left untouched for 60 seconds it returns to the normal mode 79 Service Diagnosis SiBE041101 Troubleshooting 4 Troubleshooting 4 1 Error Codes and Description Reference Page 117 120 Signal transmission error between indoor unit and outdoor unit 87 Unspecified voltage between indoor unit and outdoor unit 8 ty d Refrigerant shortage Low voltage detection or over voltage detection Indoor Unit Outdoor Unit Error Codes Description tem Indoor unit PCB abnormality Freeze up protection control or heating peak cut control Fan motor DC motor or related abnormality Indoor heat exchanger thermistor or related abnormality Room temperature thermistor or related abnormality Outdoor unit PCB abnormality h olo o 0 C e N co NO OL activation c
40. 2 If the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided If you need to install the outdoor unit close to the sea shore contact your local distributor JMI 0107 Dealer ISO 9001 Organization DAIKIN INDUSTRIES LTD AIR CONDITIONING MANUFACTURING DIVISION Scope of Registration THE DESIGN DEVELOPMENT AND MANUFACTURE OF COMMERCIAL AIR CONDITIONING HEATING COOLING REFRIGERATING EQUIPMENT COMMERCIAL HEATING EQUIPMENT RESIDENTIAL AIR CONDITIONING EQUIPMENT HEAT RECLAIM VENTILATION AIR CLEANING EQUIPMENT MARINE TYPE CONTAINER REFRIGERATION UNITS COMPRESSORS AND VALVES ISO 9001 JQA 1452 Organization DAIKIN INDUSTRIES THAILAND LTD Scope of Registration THE DESIGN DEVELOPMENT AND MANUFACTURE OF AIR CONDITIONERS AND THE COMPONENTS INCLUDING COMPRESSORS USED FOR THEM RGANIZATIgy xO 9 SO All of the Daikin Group s business 14001 8 facilities and subsidiaries in Japan 2 Jk M s are certified under the ISO 14001 J Ne international standard for e gt environment management am 0 EC99J2044 DAIKIN INDUSTRIES LTD Head Office Umeda Center Bldg 2 4 12 Nakazaki Nishi Kita ku Osaka 530 8323 Japan Tokyo Office JR Shinagawa East Bldg 2 18 1 Konan Minato ku Tokyo 108 0075 Japan http www daikin con global_ac rights reserved e Specifications designs and other
41. 2 N gt zn O NS DN AES A 0510 0 lt E cc Wide Angle Louvers 24 Hour ON OFF TIMER Vertical Auto Swing Up and Down NIGHT SET Mode Lo Tra Horizontal Auto Swing Right and Left Worry Free Auto Restart after Power Failure OO 3 D Airflow KAA Durability amp Self Diagnosis Digital LED Display COMFORT AIRFLOW Operation EN Wiring Error Check Function Comfort Anti Corrosion Treatment of Outdoor Control Auto Fan Speed EXE Heat Exchanger incor Unit Gist Opora Flexibility Multi Split Split Type Compatible NIGHT QUIET Mode Automatic 8 pn OUTDOOR UNIT QUIET Operation fama CUE Omen SCR Indoor Unit H P C O Compatible Indoor Unit Flexible Power Supply Correspondence SS 2 Area INTELLIGENT EYE Operation INTELLIGENT EYE Operation Chargeless dc xL Either Side Drain Right or Left Function PowerSelecton Automatic Defrosting Remote 5 Centralized Controler Option O Operation Automatic Operation Remote Control Adaptor Program Dry Operation O O Normal Open Pulse Contact Option Remote Control Adaptor Normal Open Contact Option os ele DIII NET Compatible Adaptor Option Lifestyle New POWERFUL Operation Convenience Non Inverter Inverter POWERFUL Operation O O Remote Jol
42. 21 63 Operation Manual SiBE041101 Operation Manual 2 9 ON TIMER Operation ON TIMER Operation B To use ON TIMER operation Check that the clock is correct If not set the clock to the present time 1 Press and setting time are displayed on the LCD ET is displayed on the LCD e ON blinks A 2 Press until the time setting reaches v the point you like Each pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press again The TIMER lamp lights up TEMO c B To cancel ON TIMER operation 4 Press e and setting time disappear from the LCD e QD and day of the week are displayed on the LCD The TIMER lamp goes off B To combine ON TIMER and OFF TIMER A sample setting for combining the 2 timers is shown below Example Present time 23 00 The unit operating OFF TIMER at 0 00 ON TIMER at 14 00 Combined NOTE B In the following cases set the timer again e After a breaker has turned off e After a power failure e After replacing batteries in the remote controller 22 Operation Manual 64 Operation Manual SiBE041101 2 10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week It is convenient if the WEEKLY TIMER is set according to the family s lif
43. 4CuT VALVE MUFFLER DISCHARGE PIPE THERMISTOR U 6 9 5CuT ene 9 5CuT 1 547 FIELD PIPING COMPRESSOR 9 5CuT M MUFFLER MUFFLER int ACCUMULATOR REFRIGERANT FLOW uy COOLING HEATING 3D059586H Appendix 252 Piping Diagrams SiBE041101 RXS42J2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR gt 7 9CuT A HH k HAE hg HEAT EXCHANGER JC THERMISTOR MOTOR OPERATED VALVE 4 8CuT 9 4647 610 9 4 8CuT MUFFLER MUFFLER 1 WI WITH FILTER FILTER 5 N PROPELLER FAN x To 9 5CuT MUFFLER a WITH _FILTER CS D 5 3 Hi FIELD PIPING E 2 LIQUID STOP 6 4CuT VALVE MUFFLER DISCHARGE PIPE THERMISTOR 9 5CuT 4 9 5CuT FIELD PIPING amp COMPRESSOR 0 gt H MUFFLER GAS STOP ACCUMULATOR VALVE REFRIGERANT FLOW COOLING eee ee eee HEATING 3D059590B RXS50J2V1B OUTDOOR UNIT 7 9CuT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE a 7 9CuT THERMISTOR 7 9CuT 7 9CuT 12 7CuT 7 9CuT CAPILLARY TUBE 1 7 9CuT 7 9CuT 4 0CuT MUS 7 9CuT pepe M c FILTER REFRIGERANT FLOW 2 6 4CUT i u m WERT HEATING T EXCHANGER VW THERMISTOR CAPILLARY TUBE 4 MOTOR OPERATED PROPELLER FAN VALVE
44. Disconnect the 1 Black harnesses 2 White 3 Red L1 Black L2 Brown N1 White N2 Blue 7 Disconnect the 2 connectors for the reactor HR1 HR2 R11473 229 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Ste Procedure 8 Remove the 3 screws of the main PCB Main PCB 9 Unfasten the 4 hooks 10 Lift up and remove the B Refer to page 19 for detail Removal Procedure 230 Outdoor Unit RK X 50J2V1B SiBE041101 4 5 Removal of Sound Blankets Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Ste Procedure Points _ 1 Remove the sound blanket back Sound blanket back R11161 2 Remove the sound B Since the piping ports are blanket outer aute torn easily remove sound blanket carefully gu SS HN 3 Remove the sound blanket top upper Sound blanket top upper 231 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Procedure Points Remove the sound blanket top lower eun d Remove the sound blanket inner aia we Sound blanket inner R5296 Release the dischar
45. HKOX 9542J2WV1B iiit rH E 191 3 1 jRemovalor utu CEU 191 3 2 Removaloft Electrical BOX Er gemitu ca 193 22 REMOVAL OF IP UU 198 3 4 Removal of Sound 4 8 00 203 3 5 Removal of Outdoor Fan Fan 205 5 6 Removal Ol ThettrllstO S uoto trate coto oce cb nee este 208 3 7 Removal of Four Way Valve Electronic Expansion Valve 209 2 6 1 inet 212 4 Outdoor Uhlt HKUX SSOJ2VTB iudico evt i a i be 215 4 1 Removal of Outer Panels 215 4 2 Removal of Outdoor Fan Fan 219 4 3 Removal of Electrical mmm 223 AA Removal o POB Eo Orte atu sdb 228 4 5 Removal of Sound Blankets Thermistors 231 4 6 Removal of Four Way 233 4 7 Removal of Electronic Expansion 234 4 8 Removal of 235 Removal Procedure SiBE041101 Indoor Unit 1 Indoor Unit 1 1 Removal of Air Filters Procedu
46. In FAN operation The airflow rate is fixed to the maximum setting 18 Operation Manual 60 Operation Manual SiBE041101 2 6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit This function is convenient during night B To start OUTDOOR UNIT QUIET operation 1 Press e f is displayed on the LCD To cancel OUTDOOR UNIT QUIET operation 2 Press again G disappears from the LCD NOTE B Notes on OUTDOOR UNIT QUIET operation e This function is available in COOL HEAT and AUTO operation This is not available in FAN and DRY operation e POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time Priority is given to the function of whichever button is pressed last Even the operation is stopped using the remote controller or the indoor unit ON OFF switch when using OUTDOOR UNIT QUIET operation will remain the remote controller display OUTDOOR UNIT QUIET operation will drop neither the frequency nor fan speed if the frequency and fan speed have been already dropped low enough 19 61 Operation Manual SiBE041101 Operation Manual 2 7 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value This functio
47. OFF TIMER Press NEXT e The time will be set 582 and the temperature blink Cmm ON temperature e The temperature can be set between 10 C and 32 C Cooling The unit operates at 18 C even if it is set at 10 to 17 Heating unit operates at 30 C even if it is set at 31 to 92 C To return to the time setting press BACK BACK NEXT The set temperature is only displayed when the mode setting is on The temperature will be set and go to the next reservation setting To continue further settings repeat the procedure from step 4 Press to complete the setting SiBE041101 Be sure to direct the remote controller toward the indoor unit and check for a receiving tone and flashing the OPERATION lamp OVNA is displayed on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights up A reservation made once can be easily copied and the same settings used for another day of the week Refer to copy mode page 27 25 Operation Manual SiBE041101 Operation Manual 1 SITES ON M N NEA vil vit WEEKLY TIMER Operation N AN Eb Day and number ON OFF ly bU u y Notes WEEKLY operation Do not forget to set the clock on the remote control first e The day of the week ON OFF TIMER mode time and set temperature only for ON TIMER mode can be se
48. Procedure 8 Remove the 2 screws Screws 9 Remove the swing motor for vertical blade R10333 10 Disconnect the connector Connector green 157 Removal Procedure SiBE041101 Indoor Unit Step Procedure Pons for horizontal blade Caution 1 Remove the screw and When reassembling do not remove the swing confuse the installing order motors for horizontal of the 2 motors and the blades Connector for colors of the connectors lower blade red If you set the connectors or motors opposite the horizontal blades do not move smoothly or the noise may be heard Screw 1 Set the motor for the upper blade first connector white 2 Then set the motor for the lower blade connector red 3 Fix the both motors with a Screw Connector for upper blade white 2 Disconnect the harnesses from the motors R10335 Removal Procedure 158 Indoor Unit SiBE041101 1 9 Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the right side Preparation panel Remove the indoor heat exchanger according to the Removal of Indoor Heat Exchanger 1 Remove the 2 screws and remove the right side panel Ys i Right side Y panel N 1
49. Replace the outdoor unit right cable 1 Capacitor charged when PCB guideline the indoor unit or outdoor unit main relay turns on NO Check No 12 Check the capacitor voltage Measure the rectifier input voltage YES Rising with increasing frequency Turn off the power Disconnect the harnesses U V and W Inverter checker Part Check No 14 No 1225477 Check with the inverter checker Correct the power supply or replace the PM1 Replace the outdoor unit PCB Turn off the power and reconnect the harnesses Then turn on the power again and restart operation Compressor running Replace the outdoor unit PCB Replace the compressor Voltage within the allowable range Supply Replace the outdoor unit voltage 15 PCB Check the supply voltage R14174 108 Troubleshooting SiBE041101 4 20 Thermistor or Related Abnormality Outdoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 109 a i gt z This fault is identified based on the thermistor input voltage to the microcomputer A thermistor fault is identified based on the temperature sensed by each thermistor B The thermistor input voltage is above 4 96 V 42 class 4 98 V or below 0 0
50. U V W 7 HL1 8 E E2 9 HR1 HR2 10 LEDA 11 FU1 FU2 12 FU3 13 J4 14 J5 15 V1 V3 V4 Printed Circuit Board Connector Wiring Diagram Outdoor Unit Connector for electronic expansion valve coil Connector for overload protector Connector for fan motor Connector for four way valve coil Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe Connector for compressor Connector for terminal board Connector for earth Connector for reactor LED for service monitor green Fuse 3 15 A 250 V Fuse 30 A 250 V Jumper for facility setting Refer to page 245 for detail Jumper for improvement of defrost performance Refer to page 246 for detail Varistor 16 Outdoor Unit SiBE041101 PCB Detail salse 21 1 8 4 p RN Eus V 1 Ef m 7n i fe M EM t HRI REDIT LED A S20 590 S40 2P208173 1 17 Printed Circuit Board Connector Wiring Diagram SiBE041101 2 3 RK X S50J2V1B Connectors and PCB 1 Main PCB Other Parts 1 0 1 2 13 14 510 520 540 551 5101 570 580 FU2 FU3 V2 V3 V5 V6 V11 Outdoor Unit Connector for terminal board indoor outdoor transmission Connector for electronic expansion valve coil Connector for overload protector Connector for service monitor
51. When mounting the control PCB make sure that it is fixed by upper 2 hooks S1 DC fan motor S21 HA connector S25 INTELLIGENT EYE sensor PCB S26 control PCB S32 indoor heat exchanger thermistor S41 swing motors S46 display PCB S47 signal receiver PCB S48 S49 control PCB B Refer to page 12 13 for detail Removal Procedure SiBE041101 Indoor Unit 1 7 Removal of Indoor Heat Exchanger Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Disconnect the refrigerant piping Remove the screws which fix the indoor heat exchanger to the installation plate R8103 Lift the indoor unit with a wooden base In pump down work be sure to stop the compressor before disconnecting the refrigerant pipe If the refrigerant pipe is disconnected with the compressor operating and the stop valve open air may s104 De sucked in to generate over pressure in refrigeration cycle thus resulting in pipe rupture or accidental injury Lift up the indoor unit B Place plastic sheet under slightly and pull out the 3 Y the drain pan to prevent drain hose The from wetting the floor with illustration is for the remaining drain case of left piping BED If the drain hose is embedded in the wall disconnect the drain hose beforehand Disconnect the piping Carry out the removal work
52. Wiring error Breaking of the connection wires between the indoor and outdoor units wire No 3 Defective outdoor unit PCB Defective indoor unit PCB Disturbed power supply waveform Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the indoor unit outdoor unit connection wires Correct the indoor unit outdoor unit connection wires Is there any wiring error Check the voltage of the connection wires on the indoor terminal board between No 1 and No 3 and between No 2 and No 3 Replace the connection wires between the indoor and Before you check the LED A outdoor units cancel the standby electricity saving function by operating fan operation with the remote controller Wait at least for 7 sec after turning on the power Properly insulated Check the LED A on the outdoor unit PCB NO Is LED A blinking Diagnose the outdoor unit PCB Check No 10 Check the power supply waveform Is there any disturbance Replace the indoor unit PCB Locate the cause of the disturbance of the power supply waveform and correct it R12160 Service Diagnosis SiBE041101 Troubleshooting 4 7 Unspecified Voltage between Indoor Unit and Outdoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Tro
53. and Control SiBE041101 Control Specification 3 3 Controls at Mode Changing Start up 3 3 1 Preheating Operation Outline Detail Function and Control The inverter operation in open phase starts with the conditions of the preheating command from the indoor unit the outdoor temperature and the discharge pipe temperature RK X S20 25 35J2V1B Outdoor temperature gt 7 C Control A Outdoor temperature lt 7 C Control Control A ON condition Discharge pipe temperature lt 10 C OFF condition Discharge pipe temperature gt 12 C Radiation fin temperature gt 90 C Control B ON condition Discharge pipe temperature lt 20 C OFF condition Discharge pipe temperature gt 22 C Radiation fin temperature gt 90 C B RK X S42J2V1B ON Condition When the discharge pipe temperature is below 10 C the inverter operation in open phase starts OFF Condition When the discharge pipe temperature is higher than 12 C the inverter operation in open phase stops B RK X S50J2V1B Outdoor temperature gt 10 C Control A Outdoor temperature lt 10 C Control B Control A condition Discharge pipe temperature lt 6 C OFF condition Discharge pipe temperature gt 8 C Radiation fin temperature gt 90 C Control B ON condition Discharge pipe temperature lt 10 5 C OFF condition Discharge pipe temperature gt 12 C Radiation fin temperature gt 90 C 38
54. any other error 2025350 78 Defective outdoor fan motor Short circuit Defective radiation fin thermistor Disconnection of connector Defective outdoor unit PCB Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit PCB Service Diagnosis SiBE041101 Troubleshooting Caution connectors or parts may be damaged Check No 07 Refer to P 126 Turn off the power and turn it on again to start the system Check No 09 Refer to P 127 YES YES Error displayed again Has PCB been replaced NO NO Check the radiation fin temperature Above A C Check No 09 Check the outdoor fan or related NG OK Radiation fin dirty Too diny Slightly dirty Check No 07 Check the installation condition 20 25 35 class 42 class 50 class Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Check if the silicon grease applied properly on the radiation fin If not apply it See Note Silicon grease Part No 1172698 Check the power transistor and the radiation fin for looseness If they are found to be fit tightly replace the outdoor unit PCB or the power transistor Replace the fan motor Correct the connectors and fan motor leads Replace the outdoor unit PCB Clean up the radiation fin R13537 d Note Refer to Application of silicon grea
55. below before carrying out the service work 2 Connect the terminals to the 1 Remove the terminals from terminale ofthe invertor the compressor checker Inverter checker Be careful not to touch the terminals U V W each other Otherwise high voltage is applied R13940 Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect detection Step 3 20 25 35 50 class Activate power transistor test operation from the outdoor unit 1 Press the forced cooling operation ON OFF button for 5 seconds Refer to page 240 for the position Power transistor test operation starts 129 Service Diagnosis SiBE041101 Service Diagnosis Check 42 class Activate power transistor test operation from indoor unit 1 Turn the power on 2 Select FAN operation with the MODE button on the remote controller 3 Press the buttons TEMP A TEMP MODE simultaneously it is displayed with the figure of ten s place blinking 4 Press the MODE button it is displayed with the figure of one s place blinking 5 Press the MODE button 7 is displayed 6 Press the ON OFF button Power transistor test operation starts B Diagnose method Diagnose according
56. compressor running frequency and the input current The compressor running frequency is above 52 Hz If the error repeats 4 times the system is shut down Reset condition Continuous run for about 60 minutes without any other error Defective outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Caution Replace the outdoor unit PCB 106 Troubleshooting SiBE041101 4 19 CT or Related Abnormality 50 Class Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 107 A CT or related error is detected by checking the compressor running frequency and CT detected input current The compressor running frequency is more than 55 Hz and the CT input current is below 0 5 A If the error repeats 4 times the system is shut down Reset condition Continuous run for about 60 minutes without any other error Defective power module Breakage of wiring or disconnection Defective reactor Defective outdoor unit PCB Service Diagnosis SiBE041101 Troubleshooting Check No 12 Refer to P 128 Check No 14 Refer to P 129 Service Diagnosis Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power and turn it on again Start operation Running current as shown at
57. direct the remote control toward the main unit and check for a receiving tone his operation is not effective on the setting display of WEEKLY TIMER All reservations will be deleted 3P266959 2A 72 73 SiBE041101 Part 6 Service Diagnosis lt TROUDIESNOOUING WIN LED 75 TI esegue E 75 122 GIU dbi 75 Problem Symptoms and 76 Service deu dva autern 77 S4 ARGAS SONOS nca oa aeq acd 77 E E ancien ae 80 4 1 Error Codes and Description eoe io te 80 4 2 Indoor Unit 81 4 3 Freeze up Protection Control or Heating Peak cut Control 82 44 Fan Motor DC Motor or Related Abnormality 84 4 5 Thermistor or Related Abnormality Indoor Unit 86 4 6 Signal Transmission Error between Indoor Unit and Outdoor Unit 87 4 7 Unspecified Voltage between Indoor Unit and Outdoor Unit 88 48 Outdoor Unit PCB ADNMORMALIY cedi li e 89 4 9 OL Activation Compressor 92 4 10 COmpressor LOCK handed 93 4 11 qe c 94 4 12 Input Overcurrent Detection
58. during work ventilate the room If the refrigerant gas is parts of the electronic exposed to flames toxic gas expansion valve and may be generated remove it Or TN Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Heat up the 2 brazed Removal Procedure 234 Outdoor Unit RK X 50J2V1B SiBE041101 4 8 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Ste Procedure Points _ 1 Remove the terminal COVer A a 227 111 eH gt C7 222 7 V VN tmnt coe 2 Disconnect the lead wires of the compressor Yellow V R12204 235 Removal Procedure SiBE041101 Release the clamp with pliers to detach the compressor lead wires 4 Remove the putty Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Heat up the brazed parts indicated by the arrows Removal Procedure Procedure gt Lf fs 4 lem
59. fan motor bs so as not to be entangled with the outdoor fan R11835 Lead wire Outdoor fan R3249 Remove the 4 screws and remove the fan R12311 4 Remove the side mm _ a Remove the 2 screws mee I n M lll at M b R12162 Removal Procedure 168 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Step Procedure 2 Remove the 4 screws on the right side panel 3 Remove the screw near the stop valves ILL ILL 4 Unfasten the hook on When reassembling make the rear side eru sure to fit the hook TS NSW 169 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Procedure Lift up the right side When reassembling make panel and remove it m sure to fit the hook R12272 Lift up the guard net and remove it SOA em 955595 K R11841 Removal Procedure 170 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 2 2 Removal of Electrical Box Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Disconnect the Preparation connector for the SSS B Remove the panels and overload p
60. for the forced operation button PCB S100 S100 R11862 11 Disconnect the connector for the filter amp QE H d i WU ZN Sy W 4 Ly Pu 4 0 P w b ER QJ Ly 11863 12 Release the harnesses from the hook 13 Release the harness for the outdoor temperature thermistor R11865 SiBE041101 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B step Procedure Points 14 Remove the 6 screws gu SS A iN 09000000950 15 Unfasten 4 hooks and remove the main PCB R11867 Refer to page 15 for detail S50 S100 S10 HL3 filter PCB S20 electronic expansion valve coil S40 overload protector S50 magnetic relay S70 fan motor S80 four way valve coil S90 thermistors S100 forced operation button PCB S90 S10 R11868 Removal Procedure 178 Outdoor Unit RK X S20 2
61. is used for detecting disconnection of the discharge pipe thermistor When the discharge pipe temperature becomes lower than the indoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected 34 Control Specification SiBE041101 3 Control Specification 3 1 Outline Detail 35 Mode Hierarchy There are two modes the one is the normal operation mode and the other is the forced operation mode for installation and providing service For Cooling Only Model There are following modes stop and cooling including drying Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode i Cooling Stop mode except for cooling modes by indoor command Preheating operation During C capacitor is discharging Stop R2830 For Heat Pump Model There are following modes stop cooling includes drying heating include defrosting Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Heating Defrosting Stop mode except for cooling heating modes by indoor command Preheating operation During C capacitor is discharging Stop R2829 d Note Unless specified otherwise an indoor dry operation command is regarded as cooling operation Function and Control SiBE041101 Control Specification 3 2 Frequency Control Outline
62. min x 35 3 Specifications SiBE041101 Specifications 50 Hz 220 230 240 V ndorUnt 1 meae in 14 300 5 800 17 100 17 100 5 800 18 100 Power Consumption Rated Min Max 1 210 440 2 330 1 460 440 1 810 902 907 90 0 97 6 97 7 98 1 COP Rated 3 47 3 86 2 24 3 42 3 86 2 24 x medios 688 95 J 90127 2 4 Gonnecions Gas 9 5 12 7 9180 0180 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes 1 Max Interunit Piping Length gt O O O O Max Interunit Height Difference 5 Chargeless Amount of Additional Charge of Wege gm 2 Front Panel Color 4 11 3 999 Wn 90 318 6 8 240 5 9 208 5 o pe Fan w 28 Air Direction Control Temperature Contro EX perm pe Operation H M L SL 45 39 33 30 Outdoor Unit Casing Color Md o Refigerani hg 506 0 65 WT E 170 IH 37 3 1 317 50 9 1 797 DRE 30 6 1 080 48 9 1 727 Maro W 8 I EMEN O 67 64 61 Power Consumption Rated w 1186 1186 1186 1494 1484 14B4 PowrFado 905898 1 573297480 Staring Curent 68 Benson mm 8Sx765x2gb 78x85x30 Packaged Dimensions
63. operating the product to the customer 1 1 1 Cautions Regarding Safety of Workers Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work do not touch the discharged refrigerant gas The refrigerant gas may cause frostbite When disconnecting the suction or discharge pipe of the compressor at the welded section evacuate the refrigerant gas completely at a well ventilated place first If there is a gas remaining inside the compressor the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected and it may cause injury If the refrigerant gas leaks during the repair work ventilate the area The refrigerant gas may generate toxic gases when it contacts flames The step up capacitor supplies high voltage electricity to the electrical components of the outdoor unit Be sure to discharge the capacitor completely before conducting repair work A charged capacitor may cause an electrical shock Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug Plugging or unplugging the power cable plug t
64. press NEXT The mode is switched to setting mode Go to setting mode step 4 page 24 3 Press to exit confirming mode S is displayed on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights up LJ ES Setting Displays MON Confirmation B To deactivate WEEKLY TIMER operation 4 Press WEEKLY while is displayed on the LCD e S333 disappears from the LCD The TIMER lamp goes off To reactivate the WEEKLY TIMER operation press the WEEKLY again If a reservation deactivated with WEEKLY is activated once again the last reservation mode will be used 29 71 Operation Manual SiBE041101 WEEKLY TIMER Operation The reservations for each day of the week This function can be used for deleting reservations for each day of the week t can be used while confirming or setting reservations All reservations 8 30 Operation Manual B To delete reservations The individual reservation e Refer to setting mode page 24 When selecting desired mode at step 4 in setting mode select blank The reservation will be deleted Press Select the day of the week to be canceled A with SELECT v Hold WEEKLY for 5 seconds The reservation of the selected day of the week will be deleted Hold WEEKLY for 5 seconds while normal display A SELECT Operation Manual Be sure to
65. set temperature shifted by 2 C The air conditioner may go into energy saving operation even if there are people in the areas This may occur depending on the clothes the people are wearing if there are no movements of the people in the areas The airflow direction from the louvers will be leftward if there are people in both areas 1 and 2 or if there is a person right in front of the sensors because the sensors on the both sides will detect the person Due to the position of the sensor people might be exposed to the airflow of the indoor unit if they are close to the front side of the indoor unit If there are people close to the front side of the indoor unit or in both areas it is recommended to use the COMFORT AIRFLOW and INTELLIGENT EYE functions simultaneously When both of them are in use the air conditioner will not direct the airflow towards the people Sensor may not detect moving objects further than 7m away Check the application range Sensor detection sensitivity changes according to indoor unit location the speed of passersby temperature range etc he sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby e INTELLIGENT EYE operation will not go on during POWERFUL operation NIGHT SET mode page 21 will not go on during use of INTELLIGENT EYE operation 16 Operation Manual 58 Operation Manual SiBE041101 NOTE B Note on combination of C
66. sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug has dust or loose connection it may cause an electrical shock or fire Be sure to install the product correctly by using the provided standard For unitary type installation frame only Incorrect use of the installation frame and improper installation may cause the equipment to fall resulting in injury Be sure to install the product securely in the installation frame mounted on the For unitary type window frame If the unit is not securely mounted it may fall and cause injury When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the unit it may cause a fire Check to see if the parts and wires are mounted and connected properly and if the connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation p
67. the electrical box cover from the hook PCB 5 Cut the jumper J4 You can cut the jumper with the PCB mounted R14267 245 Trial Operation and Field Settings B RKS50J2V1B Turn on the switch SWA B direct wind provide a windbreak wall Field Settings pee R12186 N Caution 1 lf the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used A humidifier might cause dew jumping from the indoor unit outlet vent 4 Cutting jumper sets the indoor fan tap to the highest position 20 25 35 42 class 5 Use the indoor unit at the highest level of airflow rate 50 class 4 5 Jumper and Switch Settings Jumper Function When connected When cut factory set Fan speed setting e indoor unit PCB when compressor stops for thermostat setting OFF effective only at cooling operation JC Power failure on indoor unit PCB recovery function Auto restart J5 Improvement of Standard control on outdoor unit PCB defrost performance of 20 42 class For the location of the jumper refer to the following pages Indoor unit page 12 Outdoor unit page 15 17
68. the compressor R11718 126 Check SiBE041101 5 7 Outdoor Fan System Check Check No 09 DC motor Check the outdoor fan system Outdoor fan running Fan motor lead wire connector disconnected YES Reconnect the connector YES Outdoor fan system is functioning Go to Check No 15 R7159 5 8 Power Supply Waveforms Check Check No 10 Measure the power supply waveform between No 1 and No 2 on the terminal board and check the waveform disturbance B Check to see if the power supply waveform is a sine wave Fig 1 B Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 R1444 R1736 5 9 Inverter Units Refrigerant System Check Refrigerant system check Is the discharge pipe thermistor disconnected from the holder Check No 11 YES Place the thermistor Check for refrigerant leakage See the service diagnosis on refrigerant shortage Replace the refrigerant R8259 127 Service Diagnosis SiBE041101 Check 5 10 Capacitor Voltage Check Check No 12 Before this check be sure to check the main circuit for short circuit With the circuit breaker still on measure the voltage according to the drawing of the model in question Be careful never to touch any live parts Multimeter DC voltage range R13538 5 11 Power Module Check Check No 13 d Note Check to make sure that
69. the indoor heat exchanger temperature and the difference between the room thermistor temperature and the target temperature d Note 1 During POWERFUL operation fan rotates at H tap 50 rpm 2 Fan stops during defrost operation COMFORT B The fan speed is controlled automatically within the following steps AIRFLOW Cooling L tap MH tap same as AUTOMATIC Operation Heating ML tap Equivalent to ML tap MH tap The latest command has the priority between POWERFUL and COMFORT AIRFLOW Function and Control 24 Main Functions SiBE041101 1 5 Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering Since the microcomputer controls both the temperature and airflow rate the temperature adjustment and fan adjustment buttons are inoperable in this mode Detail The microcomputer automatically sets the temperature and airflow rate The difference between the room thermistor temperature at start up and the target temperature is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor Target temperature Thermostat OFF point Thermostat ON point temperature at start up X Y Z X 0 5 24 C or more or Y 0 5 C zone B Room thermistor continues for 10 min temperature at start up X 05 C or Y 0 5 C zone cont
70. the lapse of 20 minutes 2 Operation OFF 3 POWERFUL operation is OFF R7096 32 Main Functions SiBE041101 1 12 Other Functions 1 12 1 Hot Start Function In order to prevent the cold air blast that normally comes when heating operation is started the temperature of the indoor heat exchanger is detected and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat is turned ON 1 12 2 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 1 12 3 Indoor Unit ON OFF Button An ON OFF button is provided on the display of the unit Press this button once to start operation Press once again to stop it This button is useful when the remote controller is missing or the battery has run out B The operation mode refers to the following table Cooling Onl COOL ON OFF button R8302 lt Forced cooling operation gt Forced cooling operation can be started by pressing the ON OFF button for 5 to 9 seconds while the unit is not operating Refer to page 240 for detail Note When the ON OFF button is pressed for 10 seconds more the forced cooling operation is stopped 1 12 4 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifyi
71. the power Disconnect the harnesses U V and W Check No 14 Inverter checker Check with the inverter checker No 1225477 YES Correct the power supply or replace the outdoor unit PCB Replace the compressor R14172 104 Troubleshooting Troubleshooting 105 Check No 14 Refer to P 129 SiBE041101 50 class N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power Check the power supply voltage Voltage as rated YES Check the connection Electrical components or compressor harnesses connected as specified Correct the power supply Reconnect them as specified YES Turn on the power Check the electrolytic capacitor voltage Replace the outdoor unit PCB Turn off the power Disconnect the harnesses U V and W 2 14 Inverter checker Check with the inverter checker Part No 1225477 YES Correct the power supply or replace the outdoor unit PCB Replace the compressor R14173 Service Diagnosis SiBE041101 Troubleshooting 4 18 DC Voltage Current Sensor Abnormality 20 25 35 42 Class Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis DC voltage or DC current sensor abnormality is identified based on the
72. the voltage between and of the diode bridge DB1 is approx V before checking B Disconnect the compressor harness connector from the outdoor unit PCB To disengage the connector press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi tester Evaluate the measurement results for a judgment Negative terminal of DB1 UVW DB1 UVW tester positive terminal for digital tester Positive terminal of UVW DB1 UVW DB1 tester negative terminal for digital tester Resistance in OK several several MQ Resistance in NG 0 Q or Service Diagnosis 128 Check SiBE041101 5 12 Inverter Checker Check Check No 14 B Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit it is difficult to judge whether it is caused by the compressor failure or other failure control PCB power module etc The inverter checker makes it possible to judge the cause of trouble easily and securely Connect this checker as a quasi compressor instead of compressor and check the output of inverter B Operation Method Step 1 Be sure to turn the power off Step 2 Install the inverter checker instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or
73. to 6 LEDs lighting status 1 When all the LEDs are lit uniformly the compressor is defective Replace the compressor 2 When the LEDs are not lit uniformly check the power module Refer to Check No 13 3 If NG in Check No 13 replace the power module PCB If OK in Check No 13 check if there is any solder cracking on the PCB 4 If any solder cracking is found replace the PCB or repair the soldered section If there is no solder cracking replace the PCB Caution 1 When the output frequency is low the LEDs blink slowly As the output frequency increases the LEDs blink quicker The LEDs look like they are lit 2 On completion of diagnose by the inverter checker be sure to re crimp the FASTON terminals Otherwise the terminals may be burned due to loosening Direction of crimp This size is shortened by crimp FASTON terminal R5161 130 Check SiBE041101 5 13 Rotation Pulse Check on the Outdoor Unit PCB Check No 15 20 25 35 class 1 Check that the voltage between the pins 10 11 is 15 VDC 2 Check if the Hall IC generates the rotation pulse 0 15 VDC 4 times between the pins 10 12 10 13 when the fan motor is manually rotated once 13 HV Hall IC 12 HU Hall IC 11 15 VDC 10 9 Free pin 8 Free pin 7 Phase W 6 Free pin 5 Free pin A Phase V 3 Free pin 2 Free pin 1 Phase U R11907 42 50 class Make sure that the voltage of 320 30 V is applied Se
74. to unfasten the hooks 1 Push the front panel 2 Lift the shield plate upwards Removal Procedure 216 Outdoor Unit RK X S50J2V1B SiBE041101 Step Procedure 5 Unfasten the left side Lift the front panel while hooks and then the pushing the left side panel right side hook inwards Remove the front panel AIL 000 AAA 4 R5249 Lift the front panel and unfasten the right side hook When reassembling fit the right side of the front panel first ay 217 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Procedure Points 2 Remove the stop valve cover 1 Remove the screw of the stop valve cover Stop valve cover 2 Pull down the stop valve cover to unfasten the hooks and remove it The stop valve cover has 6 hooks Removal Procedure 218 Outdoor Unit RK X S50J2V1B 4 2 Removal of Outdoor Fan Fan Motor Procedure 1 Remove the electrical box cover 1 Remove the screw of the shield plate NM S 2 Unfasten the 2 hooks and remove the shield plate 3 Unfasten the 4 hooks of the electrical box cover and remove it M N IM NS 5 Procedure NY SAH NV 7 4 Shield plate El
75. 30 6 1 080 cfm 32 7 1 155 28 5 1 006 Propeller 35 550 x 765 x 285 612 x 906 x 364 32 E 3D070564A Note m he data are based on the conditions shown in the table below Piping Lengih kcal h kW Indoor 27 CDB 19 CWB Indoor 20 CDB cal x 860 Btu h 2 kW x 3412 cfm m3 min x 35 3 Outdoor 35 CDB 24 CWB Outdoor 7 6 CWB 7 Specifications SiBE041101 Specifications 50 Hz 220 230 240 V IndorUnt FTXS25J2V1B FTXS35J2V1B RXS25J2V1B RXS35J2V1B Outdoor Unit Cooling Cooig HeMing al 8 500 0400 10900 11 600 400 16000 11 900 4800 19 600 13 600 400 17 700 2 Running Current Rated A 31 29 28 40 88 87 44 42 40 48 48 44 Power Consum m Rated Min 535 320 810 710 310 1 290 860 350 1 190 950 340 1 460 Power Faa J 178480205 607792800 688890856 900 898 900 ee Insulation O O 4 20 772 Mex Interunit Height Deene 5 5 Gagdes _ m 49 Amount of Additional Charge of 2 Front Panel Color L min Fan Air Direction Control Temperature Contro Wi 8 Operation H M L SL 41 33 25 22 42 35 28 25 45 37 29 2 45 39 29 26 SomdPowr 7 Ooo Outdoor Uni
76. 4 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 step Procedure Pons O 3 Remove the fan motor B The screw has reverse 1 Remove the washer winding fitted nut of the outdoor NN B Nut size M6 fan 10 mm 41 Je DEN m R12236 2 Remove the outdoor When reassembling align fan FOROS wv mark of the outdoor fan with D cut section of the motor shaft m 222 222 7277777 22262 11828 3 Release the outdoor temperature thermistor Outdoor temperature thermistor R11829 165 Removal Procedure SiBE041101 Disconnect the connector for the fan motor S70 Release the fan motor lead wire from the hook Removal Procedure Outdoor Unit RK X S20 25 35J2V1B Procedure ay 1 Fan motor oP gt PL d of 2 L2 M R11832 166 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Step Procedure 7 Remove the screw and remove the fan motor fixing frame When reassembling fit the lower hooks into the bottom frame 167 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Procedure Open the hooks and m When reassembling put the release the fan motor fan motor lead wire through lead wire T u the back of the
77. 4 V 42 class 0 02 V with the power on 2 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature B Disconnection of the connector for the thermistor B Defective thermistor B Defective heat exchanger thermistor in the case of 4 3 error outdoor heat exchanger thermistor in cooling operation or indoor heat exchanger thermistor in heating operation B Defective outdoor unit PCB B Defective indoor unit PCB In case of 24 Caution Replace the outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Radiation fin thermistor Service Diagnosis SiBE041101 66 47455 66 yt 99 Troubleshooting In case of HS 3 Check No 06 Refer to P 125 Turn on the power again Error displayed again on remote controller Check No 06 Check the thermistor resistance value NO 43 error the discharge pipe temperature is YES lower than the heat exchanger temperature Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger temperature Check No 06 Check the indoor heat exchanger thermistor resistance value in the heating operation Indoor heat exchanger thermistor functioning NO YES Und RC Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor
78. 5 35J2V1B SiBE041101 Se Ponts 2 Remove the filter PCB 1 Release the harnesses from the hook R11869 2 Cutthe clamp ON DE 51 he 11871 3 the harnesses from the hook y R11872 179 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Procedure Release the harnesses from the hooks Remove the screw R11874 Unfasten the 2 hooks Filter PCB R11876 Lift and pull out the filter PCB R11877 Removal Procedure 180 Outdoor Unit RK X S20 25 35J2V1B Procedure QU MS V N J ZS 790 od AW SiBE041101 B Refer to page 15 for detail Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B 2 4 Removal of Reactor Partition Plate Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Procedure 1 Fano the reactor Preparation 1 Remove the reacior the screw and gt B Remove the outer panels remove the reactor tim according to the Removal of
79. 80 978 081 ores areqas aoy amuza _ EE Liquid 94 194 Connections Dan 018 0 Heat Insulation MaxmnntPpinglengh m 901777 S MaxienntHeightDifeene m 19 3 S Gass m E Refrigerant E m marin cfm 6 8 240 7 3 258 7 0 247 7 6 268 5 9 208 6 4 228 6 0 212 6 7 237 Air Direction Control Air File Teper Corr Wage TELLE LL E a rr Outdoor Unit Casing Color Compressor Ried R9 I hag o 170 H 37 3 1 317 31 3 1 105 50 9 1 797 45 0 1 589 ONR E 30 6 1 080 27 2 960 48 9 1 727 43 1 1 522 SS ix Running Current Rated _ A 60 5755 71 88 68 87 84 61 79 87 84 Power Consumption Rated Ww 1186 1186 1186 1420 1420 1420 1434 1434 1434 1498 1498 1498 Power Factor Rated 898 905 898 909 908 910 972 974 980 972 972 975 Dimensions HxWxD mm oxx 735x85x30 Wi E Note B The data are based on the conditions shown the table below Piping Length kcal h kW x 860 Btu h kW x 3412 cfm m3 min x 35 3 Indoor 27 CDB 19 CWB Indoor 20 CDB E
80. AA NS R8113 2 Helease the fan motor wire harness from the hook 159 Removal Procedure SiBE041101 Step Procedure 3 Remove the 2 screws of the fan motor fixing plate Unfasten the hook of the fan motor fixing plate and remove the plate 2 the fan rotor the fan rotor by sliding it to the right Removal Procedure Indoor Unit 160 Indoor Unit Loosen the lock screw and remove the fan rotor Press the bearing ASSY from outside Remove the bearing 161 Procedure Lock screw 4 Fan motor SiBE041101 m When reassembling the fan rotor provide as much as 5 mm of play between the side face of the rotor and the bottom frame Side face of Side face of rotor bottom frame gt 9582 1 Insert the fan motor with approx 5 mm left 2 Tighten the screw until it stops Then turn the screw In one scroll 3 Move the fan rotor and confirm the fan motor and the fan rotor are installed appropriately 4 Tighten the screw completely if appropriate 5 If not appropriate go back to Removal Procedure SiBE041101 Outdoor Unit RK X 20 25 35J2V1B 2 Outdoor Unit RK X S20 25 35J2V1B Note Illustrations are for heat pump models as representative 2 1 Removal of
81. At smaller airflow rates the cooling heating effect is also smaller 11 53 Operation Manual SiBE041101 Operation Manual 2 3 Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort B To start auto swing Upper and lower airflow direction E e CS is displayed on the LCD The flaps horizontal blades will begin to swing Right left airflow direction Press ZN is displayed on the LCD e The louvers vertical blades will begin to swing 2 The 3 D airflow direction SWING Press and and 1 are displayed on the LCD The flaps and louvers move in turn To cancel 3 D airflow press either or again The flaps or louvers will stop moving The following illustrations show respective airflow directions Upper Lower Right Left 12 Operation Manual Operation Manual SiBE041101 B To set the flaps or louvers at desired position This function is effective while flaps or louvers are in auto swing mode Press and when the flaps or louvers have reached the desired position In the 3 D airflow the flaps and louvers move in turn or IN disappears from the LCD N CAUTION Always use a remote controller to adjust the angles of the flaps and louvers If you attempt to move the flaps and louvers forcibly wit
82. BE041101 a R2T R3T OUTDOOR DISCHARGE PAS outdoor CONDENSER FRE 250 L gt FIELD WIRING 74 75 94 M1F FAN MOTOR V1 V3 V4 VARISTOR 95 CAPACITOR MRCW MRM10 X1M TERMINAL STRIP DB1 082 DB3 DIODE BRIDGE MRM20 MR30 MAGNETIC RELAY Y1E ELECTRONIC EXPANSION VALVE COIL FU1 FU2 FU3 FUSE N NEUTRAL Z1C Z2C Z3C BLK BLACK IPM1 INTELLIGENT POWER MODULE PCB1 PRINTED CIRCUIT BOARD Z4C FERRITE CORE BLU BLUE L LIVE iL OVERLOAD PROTECTOR PROTECTIVE EARTH BROWN L1 COIL R1T R3T THERMISTOR S20 S40 S70 GRN GREEN L1R REACTOR 1 SURGE ARRESTER S80 S90 ORG ORANGE M1C COMPRESSOR MOTOR Q31 IGBT X11A CONNECTOR RED RED WHT WHITE YLW YELLOW 3D059615A om indoor I 2 2 1 3 LT POWER SUPPLY gt o ng 250 tl RIT a gt Ae OUTDOOR DISCHARGE rA E outdoor CONDENSER aiL F 1 L gt 38 gt FIELD WIRING e C74 C75 C94 M1F FAN MOTOR V1 V3 V4 VARISTOR MIC C95 CAPACITOR MRCW MRM10 X1M TERMINAL STRIP DB1 DB2 DB3 DIODE BRIDGE MRM20 MR30 MAGNETIC RELAY Y1E ELECTRONIC EXPANSION VALVE COIL
83. COOLING COOLING HEATING HEATING 4D058897E 4D058898E 249 Appendix SiBE041101 1 2 Outdoor Unit 1 2 1 Cooli ng Only Piping Diagrams RKS20J2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER THERMISTOR co ES lt 5 22 Gi DIET pear HHHH JUTHERMISTOR MOTOR OPERATED entr 87 gt lt a gt MUFFLER MUFFLER WITH WITH A FILTER FILTER 2 PROPELLER FAN X 5 2 2 9 5CuT MUFFLER WITH FILTER i NW 5 NT FOUR WAY VALVE 5 FIELD PIPING S 6 4 90 7 MUFFLER DISCHARGE PIPE THERMISTOR E 95CuT 95CuT FIELD PIPING MUFFLER MUFFLER GAS STOPI 9 5CU7 ACCUMULATOR VALVE REFRIGERANT FLOW COOLING 3D059588B RKS25 35J2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE 70 HEAT EXCHANGER THERMISTOR e HHHH HEAT EXCHANGER THERMISTOR MOTOR OPERATED Quum DX 4 8CuT MUFFLER MUFFLER WITH ITH FILTER FILTER CN PROPELLER FAN x X O 5 9 5CuT MUFFLER Eo e WITH FILTER O S E VALVE FIELD PIPING e 6 4CuT aT MUFFLER DI
84. DAIKIN SiBE041101 Service Inverter Pair Wall Mounted Type J Series Applied Models e Inverter Pair Cooling Only e Inverter Pair Heat Pump eCooling Only Indoor Unit FTXS20J2V1B FTXS25J2V1B FTXS35J2V1B FTXS42J2V1B FTXS50J2V1B Outdoor Unit RKS20J2V1B RKS25J2V1B RKS35J2V1B RKS42J2V1B RKS50J2V1B eHeat Pump Indoor Unit FTXS20J2V1B FTXS25J2V1B FTXS35J2V1B FTXS42J2V1B FTXS50J2V1B Outdoor Unit RXS20J2V1B RXS25J2V1B RXS35J2V1B RXS42J2V1B RXS50J2V1B Wall Mounted Type SiBE041101 Inverter Pair J Series Table of Contents SiBE041101 HOM MR RETE ERE Vi 11 Cautions per vi t2 Used eed RR NA X Part 1 List of FunctionS D Tes FUNCIONS ER 2 T ONY 2 22161111122 3 Part 2 SDECITICATIONS ME Ma uu Ra RR A 15 5 5 COON ONV mm 5 NEED AU m 7 Part Printed Circuit Board Connector Wiring Diagram 10 Tt door T Um 11 QS ed NNI 14 24 520 25 35 2 1 1 081 00 00060 08 14 DD 16 2 3
85. EKLY TIMER operation Make sure the day of the week and time are set If not set the day of the week and time Program 1 Program 2 3 Program 4 ON OFF Monday 2 25 27 C EE 6 00 8 30 17 30 22 00 1 Press e The day of the week and the reservation number of the current day will be displayed 1 to 4 settings can be made per day A 2 Press to select the desired day of the v week and reservation number A 96 e Pressing changes the reservation number and v A NEXT the day of the week SELECT v 3 Press NEXT e The day of the week and reservation number will be set and blink A 4 Press to select the desired mode v Pressing the changes or OFF setting in sequence v ON OFF blank ON TIMER OFF TIMER n case the reservation has already been set selecting blank deletes the reservation Go to step 9 if blank is selected 5 Press NEXT e The ON OFF TIMER mode will be set 2 and the time blink 24 Operation Manual 66 Operation Manual 10 67 A Press to select the desired time v A Press to select the desired v Press NEXT e The time can be set between 0 00 and 23 50 in 10 minute intervals To return to the ON OFF TIMER mode setting press BACK Go to step 9 when setting the
86. HxWxD mm 29 90 wa k Operation usc 48 44 BA 3D070572A 3D070573A Note B The data are based on the conditions shown in the table below Conversion Formulae Cooling Piping Length Indoor 27 CDB 19 CWB kcal h 2 kW x 860 Outdoor 35 CDB 24 CWB Btu h kW x 3412 cfm m3 min x 35 3 Specifications 6 Specifications SiBE041101 1 2 Heat Pump moor FIXSZUNVB fing 2 0 1 3 2 8 2 7 1 3 4 3 ise e 6 800 4 400 9 600 9 200 4 400 14 700 kcal h 1 720 1 120 2 410 2 320 1 120 3 700 MosueRemo Uh o Running Current Rated 2 6 2 5 2 4 3 5 3 4 3 2 Power Consumption Rated Min Max 450 320 810 610 310 1 290 787 783 76 1 792 780 794 COP Rated 4 44 4 06 3 95 4 43 4 19 3 64 Piping Connections 88 Insulation Amount of Additional Charge of Indoor Unit FTXS20J2V1B Front Panel Color White 50 Hz 220 230 240 V IEA Mei 74 061 cfm 5 5 194 43 145 Cross Flow Fan Fan 23 5 Steps Quiet Auto Air Direction Contro Air File Temperature Control K S 0 22 Outdoor Unit Casing Color Hermetically Sealed Swing Type Compressor 1YC23AEXD Refrigerant FVCSOK 0 375 Type R 410A 0 80 m min 36 2 1 278
87. Indoor Unit When mounting the id heat exchanger make su that the right hooks are fastened SS SS AI AAAA R14193 154 Indoor Unit SiBE041101 1 8 Removal of Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Remove the swing motor for vertical blade 1 Lift the indoor unit with a wooden base S 10323 2 Remove the screw behind the drain hose and disconnect the drain hose R10329 3 the screw at the rear and remove the screws on the right and the left side of the swing motors Swing motors R10330 155 Removal Procedure SiBE041101 Indoor Unit Step Procedure Detach the pivot from Pivot the interlock shaft for Vertical blade ASSY vertical blades with HE flat screwdriver UNE MINI e 15 Interlock shaft R12270 Remove the swing motor unit Swing motor unit R8126 Detach the interlock shaft from the swing motor with a flat screwdriver R8127 Remove the vertical blade interlock with a flat screwdriver Vertical blade interlock R10331 Removal Procedure 156 Indoor Unit SiBE041101 Step
88. LD WIRING indoor 1 5 2 m 5 L 7 z gt gt gt L gt a S70 10111213 a Wi outdoor 1 2 za 5 dc 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS 4 E CE C5 C6 C119 CAPACITOR EERE ee a r rji DB1 DB2 DB3 DIODE BRIDGE p BIS Z1C p FU1 FU2 FU3 FUSE XX IN CASE OF R1T 2 R T 01 N 3 y U 1 IPM1 IPM2 INTELLIGENT POWER MODULE T YIE WEE ONLY OUTDOOR DISCHARGE 15 L LIVE oo CONDENSER L1 COIL PCB1 PCB2 PCB3 PRINTED CIRCUIT BOARD SWI FORCED OPERATION SWITCH LIR REACTOR V1 V2 V3 VARISTOR M1C COMPRESSOR MOTOR Di E X1M TERMINAL STRIP que JEN MOTOS S70 S80 S90 100 110 oA Y1E ELECTRONIC EXPANSION VALVE COIL MRCW MR30 MRM10 MRM20 MAGNETIC RELAY 122 N SMEUTHAE abs Z1C Z2C Z3C FERRITE CORE QIL OVERLOAD PROTECTOR SA1 SURGE ARRESTER BESTEHEN HE 3D065704B Appendix 254 Wiring Diagrams RKS42J2V1B L POWER SUPPLY indoor Si
89. MPERATURE adjustment buttons e It changes the temperature setting 7 MODE selector button t selects the operation mode AUTO DRY COOL HEAT FAN page 10 8 QUIET button OUTDOOR UNIT QUIET operation page 19 9 ECONO button ECONO operation page 20 SiBE041101 lt Open the front cover gt 9 10 7 MODE 75500 i 11 QUIET COMFORT SWING 8 8725 SENSOR 12 13 CANCEL TIMER 10 11 12 13 14 15 16 17 18 SWING button Flaps horizontal blades page 12 SWING button e Louvers vertical blades page 12 COMFORT SENSOR button COMFORT AIRFLOW and INTELLIGENT EYE operation page 14 WEEKLY PROGRAM COPY BACK NEXT button WEEKLY TIMER operation page 23 SELECT button e It changes the ON OFF TIMER and WEEKLY TIMER settings page 21 23 OFF TIMER button page 21 ON TIMER button page 22 TIMER CANCEL button t cancels the timer setting page 21 22 cannot be used for the WEEKLY TIMER operation CLOCK button Operation Manual SiBE041101 Operation Manual 2 2 AUTO DRY COOL HEAT FAN Operation AUTO DRY COOL HEAT FAN Operation The air conditioner operates with the operation mode of your choice From the next time on the air conditioner will operate with the same operation mode B To start operation 1 Press and select a operation mode Each press
90. O Before you check the LED A YES cancel the standby electricity saving function by operating fan operation with the remote controller Wait at least for 7 sec after turning on the power NO Replace the connecting wires between the indoor and outdoor units Is LED A blinking YES Check to see if the outdoor unit is grounded YES YES Replace the outdoor unit PCB Ground the system Is the harness broken Replace the harness NO Zero cross signal abnormality Replace the outdoor unit PCB R12188 90 Troubleshooting SiBE041101 Troubleshooting 50 class Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn on the power again NO Check to see if the unit is grounded YES Replace the outdoor unit PCB Ground the system The cause can be external factors other than malfunction Investigate the cause of noise R7183 91 Service Diagnosis SiBE041101 Troubleshooting 4 9 OL Activation Compressor Overload Remote 2 Controller Display Method of A compressor overload is detected through compressor OL Malfunction Detection Malfunction Ifthe error repeats twice the system is shut down Decision Reset condition Continuous run for about 60 minutes without any other error Conditions The operating temperature condition is not specified Supposed B Defective
91. OK Check No 04 NG Check the electronic Replace the electronic expansion valve expansion valve or the coil Replace the outdoor unit OK PCB Check No 06 NG Check the outdoor heat exchanger thermistor Replace the outdoor heat exchanger thermistor OK Replace the outdoor unit PCB R11897 100 Troubleshooting SiBE041101 4 16 Compressor System Sensor Abnormality 4 16 1 20 25 35 42 Class Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 101 0 n The system checks the DC current before the compressor starts B The DC current before compressor start up is out of the range 0 5 4 5 V sensor output converted to voltage value B The DC voltage before compressor start up is below 50 V B Broken or disconnection of harness B Defective outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged N Caution Check the relay harness for the compressor Is the harness broken Replace the harness Turn off the power and turn it on again Restart operation and error displayed again No problem Keep on running Replace the outdoor unit PCB R11712 Service Diagnosis SiBE041101 Troubleshooting 4 16 2 50 Class Remote Hui Controller Display Method of B The system checks the supply voltage a
92. OMFORT AIRFLOW operation and INTELLIGENT EYE operation The airflow rate will be set to AUTO If the upper and lower airflow direction is selected the COMFORT AIRFLOW operation will be canceled Priority is given to the function of whichever button is pressed last The air conditioner can go into operation with the COMFORT AIRFLOW and INTELLIGENT EYE functions combined The flaps adjust the airflow direction upward while in cooling operation and downward while in heating operation during which the sensors of the INTELLIGENT EYE are working to detect the movement of people When the sensors detect people the louvers will direct the airflow in such way that it will not be blown directly on them If there are no people the air conditioner will go into energy saving operation after 20 minutes INTELLIGENT EYE operation is useful for energy saving B Energy saving operation f no presence detected in the room for 20 minutes the energy saving operation will start This operation changes the temperature 2 C in HEAT 2 in COOL 2 in DRY operation from set temperature This operation decreases the airflow rate slightly in FAN operation only N CAUTION Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area This sensor can detect undesirable objects Do not hit or violently push the INTELLIGENT EYE sensor This can lead to damage and malfunction
93. Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB 9 Specifications SiBE041101 Part 3 Printed Circuit Board Connector Wiring Diagram T alere ea 11 22 PM 14 2 1 520 25 35 2 1 2010000000000 0 14 200 2146 53209 ee 16 23 gt tem 18 Printed Circuit Board Connector Wiring Diagram Indoor Unit 1 Indoor Unit Connectors and Other Parts 11 SiBE041101 PCB 1 Control PCB 1 S1 S21 S25 S32 S41 Oo oF C 546 547 N FG 9 JA JB JC 10 LED A 11 FU1 F1U 12 V1 H1 H2 H3 Connector for DC fan motor Connector for centralized control HA Connector for INTELLIGENT EYE sensor PCB Indoor heat exchanger thermistor Connector for swing motors Connector for display PCB Connector for signal receiver PCB Connector for terminal board Address setting jumper Refer to page 243 for detail Fan speed setting when compressor stops for thermostat OFF Power failure recovery function auto restart Refer to page 246 for detail LED for service monitor green Fuse 3 15 A 250 V Varistor PCB 2 Signal Receiver PCB 1 948 Connector for control PCB PCB 3 Display PCB 1 949 A N LED2 O Connector for control PCB F
94. Outer Panels Fan Motor Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work 2 1 1 features d Take care not to cut your E finger by the fins of the outdoor heat exchanger Mill E da 11890 2 FE the panels Hemove the screw of the stop valve cover Pull down the stop valve cover and remove it ocu NR UR UR UR i 0111 ttt oe 3 5 2 os II SS I MM T B The stop valve cover is united with the shield plate m When reassembling make sure to fit the 5 hooks Removal Procedure 162 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Sup Procedure Points 2 Remove the 2 screws Top panel and lift the top panel R7190 3 Remove the drip proof Drip proof plate plate 2 e TZ e E ST aaa 4 Remove the 4 screws and remove the discharge grille Discharge grille R7192 The discharge grille has 4 hooks M 11 lt _ 163 Removal Procedure SiBE041101 Remove the 8 screws of the front panel Unfasten the hooks Pull and remove the front panel Removal Procedure Procedure Outdoor Unit RK X S20 25 35J2V1B R11825 B The front panel has 4 hooks R11826 16
95. PCB Connector for fan motor Connector for four way valve coil Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe Connector for terminal board power supply Connector for earth Connector for reactor Connector for compressor Fuse 30 A 250 V Fuse 3 15 A 250 V Varistor PCB 2 Service Monitor PCB 1 Co iN Printed Circuit Board Connector Wiring Diagram 552 5102 LEDA oW1 SW4 B SW4 C Connector for main PCB LED for service monitor green Forced operation ON OFF switch Switch for facility setting Refer to page 245 for detail Switch for improvement of defrost performance Refer to page 246 for detail 18 Outdoor Unit PCB Detail 19 SiBE041101 PCB 1 Main PCB 5045 RN Ji E Hzt v Fu Funus 47176112 Atia LLL 0c12v eshe 590 520 540 570 51 FU3 WV 2P169046 5 PCB 2 Service Monitor PCB SW1 SW4 B SW4 C 102 3P169059 1 Printed Circuit Board Connector Wiring Diagram SiBE041101 Function and Control Part 4 Function and Control 12 MAN UR CIOS sate cewenaete Es 21 Temperature sse oo rate eite 21 12 Freguency Principle RE T TT T 21 1 3 Airflow Direction 23 1 4 Fan Speed Control for Indoor 24 to Program
96. SCHARGE PIPE THERMISTOR 8 9 5CuT 9 5CuT FIELD PIPING 9 5CuT MUFFLER MUFFLER GAS STOP ACCUMULATOR VALVE REFRIGERANT FLOW 1 COOLING 3D059589E Appendix 250 Piping Diagrams SiBE041101 RKS42J2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE 00000000 7 9CuT HEAT EXCHANGER THERMISTOR gt 7 9CuT ai aim a HEAT EXCHANGER THERMISTOR MOTOR OPERATED VALUE 4 8CuT 64CuT amp gt a 4 8CuT MUFFLER MUFFLER WITH WITH 3 FILTER FILTER i PROPELLER FAN amp 15 N 9 5CuT 5Cu MUFFLER amp WITH FILTER 2 O Q lt 5 1 a t FIELD PIPING S D 6 4CuT e LIQUID STOP 6 4 VALVE MUFFLERQ DISCHARGE PIPE THERMISTOR E G 9 5CuT 9 9CUT 5 FELD PIPING m MUFFLER GAS STOP 9 5CuT ACCUMULATOR VALVE REFRIGERANT FLOW uU COOLING 3D059591A RKS50J2V1B OUTDOOR UNIT 7 9CuT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE 7 9CuT THERMISTOR 7 9CuT 7 9CuT 12 7CuT 7 9CuT CAPILLARY TUBE 1 7 9CuT 4 0CuT 7 9CuT MUFFLER WITH 7 9CuT CETT MES REFRIGERANT FLOW 6 4 CAPILLARY TUBE 3 gt OCuT HEAT EXCHANGER THERMISTOR PROPELLER FAN A A 251 12 7CuT 12 7CuT M d MUFFLER B FOUR WAY
97. Thermistor Resistance 125 5 5 Installation Condition 126 5 6 Discharge Pressure 126 5 7 Outdoor Fan System 127 5 8 Power Supply Waveforms 127 5 9 Inverter Units Refrigerant System 127 5 10 Voltage Check ie eee 128 5 11 Power Module o ten Soo ida 128 5 12 Inverter Checker Check erren a a 129 5 13 Rotation Pulse Check on the Outdoor Unit 131 5 14 Main Circuit Short 132 Part 7 Removal Procedure 2 222222222222222222222222222222222222 133 Table of Contents 1 Tare tere dE gi ER mo c T 134 1 1 AIM INCI Sibi UULTUS 134 1 2 136 152 3Bemoval or Front 138 1 4 Removal of Horizontal Blades Vertical Blades 141 15 Removalot Electrical 144 1 6 Removal OP coe diem docu 147 1 7 Removal of Indoor Heat Exchanger 152 1 8 Removal of Swing 155 1 9 F
98. W FORCED OPERATION ON OFF SW SW1 L1R REACTOR SWA LOCALSETTING SW SW4 Q1L OVERLOAD PROTECTOR PM1 POWER MODULE PCB1 2 PRINTED CIRCUIT BOARD STEEL METAL TERMINAL STRIP FIXED PLATE 3D056145B POWER SUPPLY uz N o TO INDOOR UNIT ex B com 1 9515 1 101 5 3580 1 1 920 6 1 59 6 asic E 23 ERE AMP FIELD WIRING nanaa cmm o alaja iy eia ED 1552 5 PCB2 15102 5 R3T R2T R1T 92 e 9999 Q OUTDOOR DISCHARGE SW1 SWZ CONDENSER outdoor Z1C Z5C FERRITE CORE X1M X2M TERMINAL STRIP MRM10 MRM20 L LIVE M1C COMPRESSOR MOTOR Y1E ELECTRONIC EXPANSION VALVE COIL MRC W MAGNETIC RELAY N NEUTRAL M1F FAN MOTOR V2 V3 V5 V6 V11 VARISTOR R1T R3T THERMISTOR SW1 FORCED OPERATION ON OFF SW SW1 L1R REACTOR SA2 SURGE ARRESTER 52 5102 CONNECTOR 5 4 LOCAL SETTING SW SW4 Q1L OVERLOAD PROTECTOR FU1 FU2 FU3 FUSE LEDA PILOT LAMP PM1 POWER MODULE AC1 AC2 PCB1 2 PRINTED CIRCUIT BOARD U V W X11A X12A Y1R REVERSING SORENOID VALVE COIL E1 2 SHEET METAL TERMINAL STRIP FIXED PLATE 3D056095D HR1 HR2 CONNECTOR Appendix 256 Warning Daikin Industries Ltd s products are manufactured for export to
99. YES Harness out of connector Reconnect it Check the continuity of the four way valve coil and harness Disconnect the harness from the connector Resistance NO between harnesses about Replace the four way valve 1000 2000 Q coil YES Check No 05 NG Check the four way valve Replace the outdoor unit switching output PCB OK i YES y ae Reconnect in position NO Check No 06 NG Check the thermistors Replace the defective thermistor OK Check No 11 NG Check the refrigerant Refer to the refrigerant line line Refrigerant shortage check procedure Water mixed Stop valve OK Replace the four way valve defective or dust clogged R11710 Service Diagnosis SiBE041101 Troubleshooting 4 14 Discharge Pipe Temperature Control Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis e An error is determined with the temperature detected by the discharge pipe thermistor If the temperature detected by the discharge pipe thermistor rises above A C the compressor stops m The error is cleared when the discharge pipe temperature has dropped below B C lt 20 25 35 class gt Stop temperatures 2 30 45 Hz rising 25 40 Hz dropping 3 below 30 Hz rising below 25 Hz dropping 1 above 45 Hz rising above 40 Hz dropping lt 42 class gt Sto
100. You can remove the main 1 Feature of the main S Ho GL 2 PCB when you disconnect PCB N ES the lead wires on the terminal board without removing the electrical box R11853 2 Remove the screw on the terminal board R11854 3 the 2 earth terminals terminal oct 2 R11855 Removal Procedure 174 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 Step Procedure 4 Pull out the forced careful of a sharp operation button PCB 2 protrusion at the back of the Disconnect the 2 forced operation button connector S110 to A PCB remove the forced operation button PCB x Me P Forced operation button PCB R11856 5 Disconnect the relay connector _ KY R11857 6 Cut the clamp
101. ail Stop zone AC BC C C Drooping zone D C Keep zone EC Indoor heat exchanger Reset zone thermistor temperature R13532 3928 55 dass Function and Control 42 Control Specification SiBE041101 3 8 Outdoor Fan Control 1 Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops 2 Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF 3 Fan OFF control while defrosting The outdoor fan is turned OFF while defrosting 4 Fan ON OFF control when operation starts stops The outdoor fan is turned ON when the operation starts The outdoor fan is turned OFF when the operation stops 5 Fan control while forced cooling operation The outdoor fan is controlled as well as normal operation while the forced cooling operation 6 Fan speed control while indoor outdoor quiet operation The rotation speed of the outdoor fan is reduced by the command of the indoor outdoor quiet operation 7 Fan control for POWERFUL operation The rotation speed of the outdoor fan is increased while the POWERFUL operation 8 Fan speed control for pressure difference upkeep The rotation speed of the outdoor fan is controlled for keeping the pressure difference while cooling with low outdoor temperature When the pressure difference is small the rotation speed of the outdoor fan is reduced
102. an 159 Outdoor Unit 520 25 35 2 1 162 2 1 Removal of Outer Panels Fan 162 2 2 Removal of Electrical BOX vette e ER ato tei ette iba ees 171 2 9 Removal FG DS hie essct HERI 174 2 4 Removal of Reactor Partition Plate 182 2 5 Removal of Sound Blankets 184 2 6 Removal of Four Way 186 2 REMOVal Ol GompresSO vdd pereo tid mee RS 189 Outdoor Unit 542 92 1 191 5 1 6 ovd 191 3 2 Removal of Electrical BOX 2 1 04 6 193 222 Removal Or POB accu imu eco ro 198 3 4 Removal of Sound m 203 3 5 Removal of Outdoor Fan Fan 205 96 Removal OF 208 3 7 Removal of Four Way Valve Electronic Expansion Valve 209 3 9 4Hemoval or COIDIeSSOT dee etenim 212 Ou
103. and if it detects 10 cycles of the wave in one second in total corresponding to 20 msec x 10 200 msec and when the ON signal continues 3 sec it judges human is in the room as the motion signal is ON B 2 area INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area B image of 2 area INTELLIGENT EYE Top view 7 N D N T gt N gt N gt 7 Area Area A gt x 2 N A microcomputer judges human existence by the sensor signal from each area A and B R12276 Function and Control 30 Main Functions SiBE041101 2 Motions for example in cooling within 20 minutes 20 min 20 min gt Human detection ON t RESET From area A or B Target temperature INTELLIGENT EYE ON lamp OFF Remote controller INTELLIGENT EYE ON button OFF i Operation ON i OFF Set speed 2 Set speed Fan speed 1 OFF R12183 B When the microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted from the target temperature Cooling Dry 2 C higher Heating 2 C lower Auto according to the operation mode at that time 1 In case of FAN mode the fan speed reduces by 60 rpm 3 Airflow direction in 2 area INTELLIGENT EYE operation Detection method The opposite area of detected area is s
104. aps Wide Angle Louvers Auto Swing 3 D Airflow COMFORT AIRFLOW Operation 23 The large flaps send a large volume of air downwards to the floor and provide an optimum control in cooling dry and heating mode Cooling Dry Mode During cooling or dry mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room Heating Mode During heating mode the large flap directs airflow downwards to spread the warm air to the entire room The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution The following table explains the auto swing process for cooling dry heating and fan Vertical Swing up and down Horizontal Swing Cooling 705 ight and ie 30 Aw 30 C 30 S 50 55 es 65 R12182 R11402 R14208 R11404 Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner When the horizontal swing and vertical swing are both set to auto mode the airflow becomes 3 D airflow The horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown in the following diagram 1 The vertical blades louvers 2 The horizontal blades flaps 3 The vertical blades louvers 4 The horizontal blades flaps gt move from the r
105. ature and the electronic expansion valve is fully open for more than the specified time it is regarded as refrigerant shortage Target discharge pipe temperature Refrigerant shortage zone R1391 Ill Detecting by the difference of temperature If the difference between suction and discharge temperature is smaller than the specified value it is regarded as refrigerant shortage Refer to page 117 for detail Function and Control 48 49 SiBE041101 Part 5 Operation Manual 1 SYSTEM GCohtlgutallOi e ie cte Ei 50 2 Manual eres nesses 51 2 Remote Gontroller siii oe oe oe E tod 51 22 AUTO DRY COOL HEAT FAN Operation 52 2 3 Adjusting the Airflow 54 2 4 COMFORT AIRFLOW and INTELLIGENT EYE Operation 56 2 5 POWERFUL e RE 60 2 6 OUTDOOR UNIT QUIET 61 2 7 casio terio 62 29 ORF TIMER e e Cle aes looi eee 63 2 9 SON TIMER ODOLFAUOL doro diva 64 WEEKLY TIMER ODGratlOM eee bem EE RUND ee nd 65 Operation Manual SiBE041101 System Configuration 1 System Configuration Operation Manual Aft
106. ce Monitor The indoor unit has one green LED LED A on the control PCB When the microcomputer works in order the LED A blinks 1 2 Outdoor Unit The outdoor unit has one green LED LED A on the PCB When the microcomputer works in order the LED A blinks 75 Service Diagnosis SiBE041101 Problem Symptoms and Measures 2 Problem Symptoms and Measures Symptom Check Item Details of Measure Page The unit does not operate Check the power supply Check if the rated voltage is supplied Check the type of the indoor unit Check if the indoor unit type is compatible with the outdoor unit Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 20 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 C Diagnose with remote controller indication Check the remote controller Check if address settings for the remote addresses controller and indoor unit are correct Operation sometimes Check the power supply A power failure of 2 to 10 cycles stops air stops conditioner operation Operation lamp OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 20 C or higher and cooling operation cannot be used when the outdoor temperature is below 10 Diagnose with remote controller indication Check for thermistor detection errors Check if the thermistor is mounted securely Check for faulty operat
107. ch the insulation B The trimmed part goes front sheet Insulation sheet 3 Remove the 2 screws of the earth terminals Removal Procedure 198 SiBE041101 Outdoor Unit 642 2 1 Radiation shield plate o m ol ee Procedure _ je Remove the 2 screws and detach the 1 clip to remove the radiation shield plate Cut off the 5 clamps Release the earth wire from the hook Step 4 5 6 and disconnect the wire harnesses Removal Procedure 199 SiBE041101 Outdoor Unit 642 2 1 Step Procedure 7 Remove the 8 screws total to remove the PCB 8 Lift up the back side When reassembling make slightly and unfasten sure that the hooks of the the hooks of the front electrical box are placed on the PCB 9 Lift up the PCB Removal Procedure 200 Outdoor Unit 642 2 1 SiBE041101 Ste Procedure 10 Remove the Vas S N R8168 11 Detach the terminals B Refer to page 17 for detail from the terminal board S70 S40 S20 I IES wr E Al y 5 Q3 TEEN FS R8169 S20 electronic expansion valve coil S40 overload protector S70 fan motor S80 four way valve coil S90 thermistors 201 Removal Procedure SiBE041101 Outdoor Unit 642 2 1 Step Procedure 12 Remove the screw of the radiatio
108. content appearing in this brochure are current as of January 2011 but subject to change without notice SIBEO41101 Printed Japan 01 2011 B AK
109. d OFF 2 Remove the stop valve cover 3 Disconnect the selective connector for standby electricity saving 4 Turn ON the main power supply 1 i 2 ud Function OFF Function ON The standby electricity saving function is turned OFF before shipping R11820 N Caution Before connecting or disconnecting the selective connector for standby electricity saving make sure that the main power supply is turned OFF Trial Operation and Field Settings 244 Field Settings SiBE041101 4 4 Facility Setting Jumper and Switch cooling at low outdoor temperature Outline For Cooling Only Model This function is limited only for facilities the target of air conditioning is equipment Such as computer Never use it in a residence or office the space where there is a human Detail You can expand the operation range to 15 C by cutting jumper or turning on switch on the outdoor unit PCB If the outdoor temperature falls to 20 C or lower the operation stops If the outdoor temperature rises the operation starts again B RKS20 25 35J2V1B LLL Cut the jumper J4 12187 B RKS42J2V1B 1 Remove the e 2 screws Electrical box cover 2 Remove the 1 screw Insulation 4 Remove the Fan motor lead wire insulation sheet Hook Notch Electrical box 3 Remove
110. d to prevent the heating up the brazed carbonization of the oil inside the four way valve and the Heat up the brazed part deterioration of the gaskets of the four way valve affected by heat Keep and disconnect below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Heat up every brazed part in turn and Note disconnect B Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries 233 Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B 4 7 Removal of Electronic Expansion Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Procedure Points Pull out the electronic expansion valve coil Electronic expansion valve coil Remove the sheets of Warning R11398 Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when Warning nesting PING If the refrigerant gas leaks
111. discharge pipe thermistor Causes B Defective electronic expansion valve or coil B Defective four way valve or coil B Defective outdoor unit PCB B Refrigerant shortage Water mixed in refrigerant B Defective stop valve Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 04 Refer to P 123 Discharge pipe thermistor Insert the thermistor in disconnected position Check No 05 Refer to P 124 Check No 06 Check the thermistors Replace the discharge pipe UA Discharge pipe thermistor thermistor Check No 06 Refer to P 125 Check No 04 Check the electronic Replace the electronic expansion valve expansion valve or the coil Check No 11 Refer to P 127 Check No 05 Check the four way valve Replace the four way valve or the coil Replace the outdoor unit PCB Check No 11 Check the refrigerant line Refer to the refrigerant line Refrigerant shortage check procedure Water mixed Stop valve Replace the outdoor unit PCB R11999 Service Diagnosis 92 Troubleshooting SiBE041101 4 10 Compressor Lock Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 14 Refer to P 129 93 e A compressor lock is detected by checking the comp
112. e OFF timer is set the NIGHT SET Mode is automatically activated The NIGHT SET Mode keeps the airflow rate setting The NIGHT SET Mode continues operation at the target temperature for the first one hour then automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating This prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions and also conserves electricity Cooling Target temperature EE Operation stops at the set hours TIMER operation 0 5 NIGHT SET Mode ON temperature shift R10870 Heating Target temperature amp A TIMER operation 1 hour later NIGHT SET Mode ON is 28 Main Functions SiBE041101 1 9 ECONO Operation 29 The ECONO operation reduces the maximum operating current and the power consumption This operation is particularly convenient for energy saving oriented users It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners It is easily activated from the wireless remote controller by pushing the ECONO button B When this function is activated the maximum capacity also decreases B The remote controller can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation This function can only be set when the unit is running Pressing the ON OFF b
113. e after installation shut off the circuit breaker to eliminate unnecessary power consumption lf the circuit breaker trips to shut off the power to the air conditioner the system backs up the operation mode The system then restarts operation with the previous mode when the circuit breaker is restored In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature Trial operation may be disabled in either mode depending on the room temperature B After trial operation is complete set the temperature to a normal level 26 C to 28 C in cooling mode 20 C to 24 C in heating mode For protection the system does not start for 3 minutes after it is turned off Detail ARC452 Series 1 Press the ON OFF button to turn on the system 2 Press the both of TEMP buttons and the MODE button at the same time 3 Press the MODE button twice 1 appears on the display to indicate that trial operation is selected 4 Press the MODE button and select operation mode 5 Trial operation terminates in approx 30 minutes and switches into normal mode To quit a trial operation press the ON OFF button WDAIKIN 9 Trial Operation and Field Settings 242 Field Settings SiBE041101 4 Field Settings 4 1 Model Type Setting ARC452A3 B This remote controller is common to the heat pump model and cooling only model Use the DIP switch on the remote controller to se
114. e coil Connector for overload protector Connector for magnetic relay Connector for fan motor Connector for four way valve coil Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe Connector for forced operation button PCB Connector for filter PCB Connector for reactor Connector for compressor Fuse 3 15 A 250 V LED for service monitor green Varistor Jumper for facility setting Refer to page 245 for detail Jumper for improvement of defrost performance Refer to page 246 for detail PCB 3 Forced Operation Button PCB 1 S110 2 Connector for main PCB Forced operation ON OFF button Printed Circuit Board Connector Wiring Diagram 14 Outdoor Unit SiBE041101 PCB Detail PCB 1 Filter PCB HR1 HN2 YO V3 S11 I Ut FK 28 RC 48V SU ie meu g d 5 15A hNDEV pete 77 254254 HL26 S50 on main PCB 3P254234 1 PCB 2 Main PCB S10 J5 J4 S90 LEDA S40 52888 Emer E Brier dario 8128 520 D C mg ma MON z 4 E 1 HN3 EP Lus 71 FU2 5100 550 2P254206 1 PCB 3 Forced Operation Button PCB 5110 3P255755 1 15 Printed Circuit Board Connector Wiring Diagram SiBE041101 2 2 RK X S42J2V1B Connectors and Other Parts 1 S20 2 S40 3 S70 4 S80 5 S90 6
115. e front grille harnesses SU zm D according to the Removal of Front Grille NNNM 3 E Remove the screw of the wire fixture p BI rr M Me fixture R7932 Wire Remove the screws on the terminal board to disconnect the 10 connecting wires Ei om lt wires x Connecting R7933 Disconnect the connector for fan motor 9 1 ANS Removal Procedure 144 Indoor Unit SiBE041101 Step Procedure Pon 145 Disconnect the connector for swing motors S41 Release the harness for swing motors from the hook Pull out the indoor heat exchanger thermistor Indoor heat exchanger thermistor Remove the screw and detach the earth wire Earth wire B careful not to lose the clip of the thermistor R11268 Removal Procedure SiBE041101 Indoor Unit Step Procedure 9 Remove the screw of the electrical box 10 Unfasten the hook at the upp
116. e style B Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below Example The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend Monday Make timer settings up to programs 1 4 see page 24 Program 1 Program 2 Program 3 Program 4 ON OFF ON OFF aD Eee 6 00 17 30 22 00 Tuesday Use the copy mode to make settings for Tuesday to Friday because these to settings are the same as those for Monday See page 27 Friday Program 1 Program 2 Program 3 Program 4 OFF ON OFF cm A 6 00 8 30 17 30 22 00 Saturday No timer settings Sunday Make timer settings up to programs 1 4 see page 24 Program 1 Program 2 Program 3 Program 4 jue 10 00 19 00 21 00 8 00 Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER The effective use of the copy mode ensures ease of making reservations The use of ON ON ON ON settings for example makes it possible to schedule operating mode and set temperature changes Furthermore by using OFF OFF OFF OFF settings only the turn off time of each day can be set This will turn off the air conditioner automatically if the user forgets to turn it off 23 65 Operation Manual SiBE041101 Operation Manual WEEKLY TIMER Operation E use WE
117. eas and the louvers will adjust the airflow direction to an area where people are not present When there are no people in the sensing areas the air conditioner will go into energy saving mode page 14 The air conditioner will be in COMFORT AIRFLOW operation combined with INTELLIGENT EYE operation page 17 nornin COMFORT AIRFLOW and CE INTELLIGENT EYE 15 Operation Manual SiBE041101 Operation Manual COMFORT AIRFLOW and INTELLIGENT EYE Operation NOTE B Notes on COMFORT AIRFLOW operation e The flap position will change preventing air from blowing directly on the occupants of the room POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time Priority is given to the function of whichever button is pressed last The airflow rate will be set to AUTO If the upper and lower airflow direction is selected the COMFORT AIRFLOW operation will be canceled B Notes on INTELLIGENT EYE operation Application range is as follows Vertical angle 90 Horizontal angle 110 Side view Top view While the air conditioner is in INTELLIGENT EYE operation the louvers will adjust the airflow direction if there are people in the sensing areas of the INTELLIGENT EYE so that the leftward or rightward airflow will not be directed to the people If no people are detected in either area 1 or 2 in 20 minutes the air conditioner will go into energy saving mode with the
118. ease to a Power Transistor and E NOR 247 Trial Operation and Field Settings 238 Pump Down Operation SiBE041101 1 Pump Down Operation Outline In order to protect the environment be sure to conduct pump down operation when relocating or disposing the unit Detail 1 Remove the valve caps from the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation Hexagonal N wrench Close Liquid stop valve Gas stop valve gt Valve cap Service port R13628 Refer to page 240 for forced cooling operation 239 Trial Operation and Field Settings SiBE041101 Forced Cooling Operation 2 Forced Cooling Operation Forced Cooling Conditions The forced cooling operation is allowed when both the following conditions are met 1 The outdoor unit is not abnormal and not in the 3 minute standby mode 2 The outdoor unit is not operating Start The forced cooling operation is allowed when both the following conditions are met 1 Press the forced cooling operation ON OFF button SW1 on the indoor unit for 5 seconds 2 Press the forced cooling operation ON OFF button SW1 on the outdoor unit Command 20 25 35 class 58 Hz frequency 42 class 47 Hz 50 class 66 Hz End The forced cooling operation ends when any of t
119. ectrical box cover 219 R12029 BUT mnm SiBE041101 Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Preparation Remove the top panel and the front panel according to the Removal of Outer Panels This procedure is not necessary to remove the outdoor fan only Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Step Procedure A 2 a the fan motor Disconnect the connector for the fan motor S70 115221 Release the fan motor lead wire from the 7 hooks QE gt ASN V d 2 S 2 f 4 Fan motor lead wire Removal Procedure 220 Outdoor Unit RK X S50J2V1B Step Procedure 3 the washer fitted nut of the outdoor lt 2 gt 74 ji Mi A tat Outdoor fan 4 Remove the lower 2 screws from the fan motor first 5 Then remove the upper 2 screws Aunn MA hati 221 SiBE041101 m The screw has reverse winding B Nut size M6 10 9812236 When reassembling align v mark of the outdoor fan with D cut section of the motor s
120. ectronic expansion valve opening so that the target discharge pipe temperature can be obtained In cooling operation the outdoor heat exchanger thermistor is used for detecting disconnection of the discharge pipe thermistor When the discharge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected In cooling operation the outdoor heat exchanger thermistor is used for high pressure protection The discharge pipe thermistor is used for controlling discharge pipe temperature If the discharge pipe temperature used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts The discharge pipe thermistor is used for detecting disconnection of the discharge pipe thermistor The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained In cooling operation the indoor heat exchanger thermistor is used for freeze up protection control If the indoor heat exchanger temperature drops abnormally the operating frequency becomes lower or the operation halts In heating operation the indoor heat exchanger thermistor
121. efective outdoor unit PCB Broken harness between PCBs Noise Momentary fall of voltage Momentary power failure etc Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Before you check the LED A Turn on the power again cancel the standby electricity saving function by operating fan operation with the remote controller Wait at least for 7 sec after NO turning on the power Is LED A blinking Replace the outdoor unit PCB YES Check to see if the outdoor unit is grounded NO Grounded Ground the system YES Is the harness YES broken Replace the harness NO Zero cross signal abnormality Replace the outdoor unit PCB R14186 Service Diagnosis SiBE041101 Troubleshooting 4 8 2 42 50 Class Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis a er Detection within the program of the microcomputer The program of the microcomputer is in abnormal running order Defective outdoor unit PCB Noise Momentary fall of voltage Momentary power failure 42 class Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged N Caution Turn on the power again Check the voltage between No 1 and No 2 on the outdoor terminal board N
122. eful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Cautions for restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect 210 Outdoor Unit 642 2 1 SiBE041101 Ste Procedure Points 1 Note B Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed R8209 Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries 211 Removal Procedure SiBE041101 Outdoor Unit
123. en the disconnection is ascertained the compressor continues operation for 9 minutes and then stops When the compressor stops repeatedly the system is shut down 3 11 7 Control when frequency is changed When the target discharge pipe temperature control is active if the target frequency is changed for a specified value in a certain time period the target discharge pipe temperature control is canceled and the target opening of the electronic expansion valve is changed according to the shift 3 11 8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature and the electronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pipe temperature The target discharge pipe temperature is set as to become the SC aiming SH a The inclination does not change depending on the operating condition SH Superheat R14213 The electronic expansion valve opening and the target discharge pipe temperature are adjusted every 20 seconds The target discharge pipe temperature is controlled by indoor heat exchanger temperature and outdoor heat exchanger temperature The opening degree of the electronic expansion valve is controlled by followings Target discharge pipe temperature Actual discha
124. er far side by pressing it from above and pulling the electrical box toward yourself 11 Lift up the electrical box B There is a hook also at the and pull it out lower part of the back When Viz E mounting the electrical box M make sure that it is securely fastened Removal Procedure 146 Indoor Unit SiBE041101 1 6 Removal of PCBs Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step 1 Remove the shield plate The figure shows the appearance of the Preparation B Remove the electrical box iiin according to the Removal Iii electrical box 4 of Electrical Box r Control PCB Signal receiver PCB ql INTELLIGENT EYE sensor PCB Unfasten the hooks at the upper 2 positions of the shield plate Unfasten the hook at the side of the shield plate Shield plate Hook side Lift up the shield plate to unfasten the lower hooks and remove it Remove the screw to remove the terminal board m 5 147 Removal Procedure SiBE041101 Indoor Unit Step Procedure 3 Remove the signal receiver unit 1 Unfasten the hooks 2 Unfasten the book on the opposite side and lift up the signal receiver unit S R12278 3 Remove the signal receiver unit gt 1
125. er the installation and test operation of the room air conditioner have been completed it should be operated and handled as described below Every user would like to know the correct method of operation of the room air conditioner to check if it is capable of cooling or heating well and to know a clever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing over of the unit can only be considered to have been completed when its handling has been explained to the user without using technical terms but giving full knowledge of the equipment 50 Operation Manual 2 Operation Manual 2 1 51 Remote Controller B Remote Controller W DAIKIN lt ARC452A3 gt 1 Signal transmitter e t sends signals to the indoor unit 2 Display LCD t displays the current settings In this illustration each section is shown with its displays on for the purpose of explanation 3 FAN setting button t selects the airflow rate setting 4 POWERFUL button POWERFUL operation page 18 5 ON OFF button e Press this button once to start operation Press once again to stop it 6 TE
126. erence signal 2 0 Th 4 2 0 4 0 C OFF 8 95 s 2 se a v e 2 160 se 39 al so e s s is 7 35 8 s F Th OFF 2 Thermostat OFF Frequency Initial Setting Outline When starting the compressor the frequency is initialized according to the AD value and the Q value of the indoor unit Q value Indoor unit output determined from indoor unit volume airflow rate and other factors PI Control Determine Frequency Up Down by AD Signal 1 P control The AD value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 2 control If the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the AD value When the AD value is small the frequency is lowered When the AD value is large the frequency is increased 3 Frequency management when other controls are functioning When frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency management is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set according to the command on indoor unit When the indoor or outdoor unit quiet operation command comes from the indoor unit the upper limit frequency is lowered than the usual setting Function
127. es Be careful so as not to burn the compressor terminals the name plate the heat exchanger fin 214 SiBE041101 RK X S50J2V1B Outdoor Unit RK X S50J2V1B Illustrations are for heat pump models as representative Removal of Outer Panels 4 Outdoor Uni Note 4 1 Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Warning Procedure Points Procedure Step Remove the panels o Remove the 4 screws and lift the top panel RET TT T HEP LI CR I HANIN P n _ ff fT f f 7 J 7 HHHH Take care not to cut your finger by the fins of the outdoor heat exchanger B Slide the discharge grille Remove the 4 screws and remove the upwards and remove it discharge grille REH PEPEHA HE EH N HH MI D ATT HH PH HH LT FEE TH HH BR TU ME LI TH TB UI Ce b D Discharge grille Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Step Procedure B The discharge grille has 4 hooks 3 Remove the 6 screws of the front panel Front panel 4 Push the front panel and lift the shield plate
128. estoration Restore the piping by non oxidation brazing It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way Before working make valve with wet cloth and sure that the refrigerant provide water so that the gas is empty in the circuit cloth does not dry Be sure to apply nitrogen replacement when zs In case of difficulty with gas heating up the brazed brazing machine part 1 Disconnect the brazed Heat up the brazed part where is easy to disconnect and withdraw the piping and restore with pliers Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect 187 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Step Procedure Note B not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed 3f LEER Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Removal Procedure 188 Outdoor Unit RK X S20 25 35J2V1B SiBE041101 2 Removal of Compressor Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work step Pr
129. et as the target direction EN P EN Left We Right 7 7 N 7 N N a 3853 Detection signal ON both area and B Shift the airflow direction to area left side Detection signal ON in area A Shift the airflow direction to area B left side Detection signal ON in area B Shift the airflow direction to area A right side Detection signal OFF in both area A and B No change IN When the detection signal is OFF for 20 minutes in both area A and B the unit starts energy saving operation Others For dry operation you cannot set the temperature with remote controller but internally the target temperature is shifted by 2 C 31 Function and Control SiBE041101 1 11 Inverter POWERFUL Operation Main Functions Outline In order to exploit the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency Detail When POWERFUL button is pressed the fan speed and target temperature are converted to the following states for 20 minutes FAN o HWpsS opm AUTO Same as cooling heating in The target temperature is POWERFUL operation kept unchanged Target temp 18 C POWERFUL ON POWERFUL 20 minutes Function and Control It counts 20 minutes also 1 in the remote controller Ending condition or in 1 to 3 1 After
130. f failure with smoke in case of bad heat radiation B Wipe off the old silicon grease completely on a radiation fin Apply the silicon grease evenly to the whole B Do notleave any foreign object such as solder or paper waste between the power transistor and the radiation fin and also the diode bridge and the radiation fin Tighten the screws of the power transistor and the diode bridge and contact to the radiation fin without any gap Take out a PCB Power transistor Diode bridge TRM TPM IGBT IPM SPM etc Diode bridge Rectifier stack etc Not applied Paper waste OK Evenly applied NG Not evenly NG Foreign object silicon grease applied R9056 Trial Operation and Field Settings SiBE041101 Part 9 Appendix 1 Piping Diagrams tmt 249 t2 250 254 EE 254 2 2 us attis E 254 248 Piping Diagrams SiBE041101 1 Piping Diagrams 1 1 Indoor Unit FTXS20 25 35 42J2V1B FTXS50J2V1B INDOOR UNIT INDOOR UNIT Ricco Soho 6 4CuT 6 4CuT HEAT EXCHANGER i LOL uenis cross FLow FAN onnea FIELD PIPING FIELD PIPING 6 4CuT 6 4CuT 4 FIELD PIPING FIELD PIPING FAN MOTOR 9 5CuT 12 7CuT 9 5CuT REFRIGERANT FLOW REFRIGERANT FLOW
131. filter Air filter R7903 Removal Procedure 134 Indoor Unit 3 Remove the Titanium apatite photocatalytic air purifying filters The Titanium apatite photocatalytic air purifying filter ASSY is attached to the back of the air filter Remove the Titanium apatite photocatalytic air purifying filter ASSY by bending the air filter and unfastening the projections from the air filter frame Remove the Titanium apatite photocatalytic air purifying filter from its frame at 5 positions by bending it 135 Procedure Air filter SiBE041101 B The Titanium apatite photocatalytic air purifying filter is not marked for difference between the right and left sides 9 ay 77777777 7 7 111777740 EE 211171779 CTT Titanium apatite photocatalytic air purifying filter ASSY A lt 7 CZ LJ TT TT H L1 HEHE EH Projections R7904 R431 1 Removal Procedure SiBE041101 Indoor Unit 1 2 Removal of Front Panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Hold the both sides of the front panel and open the panel over the position where it stops Front panel
132. ft hook Unfasten the center hook 139 R12267 SiBE041101 Removal Procedure SiBE041101 Indoor Unit Procedure Pots Pull the upper part of Caution on Mounting the front grille out and When mounting the front lift the lower part up grille make sure that the 3 and then remove the hooks are fastened as they front grille ll were R12268 Removal Procedure 140 Indoor Unit SiBE041101 1 4 Removal of Horizontal Blades Vertical Blades Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the horizontal blade large Open the horizontal Caution on Mounting blade large B Mount the large horizontal blade to the upper side and the small horizontal blade to the lower side Do not put them in the wrong place Unfasten the center shaft while bending the horizontal blade large slightly SSS Mf R7922 Unfasten the left shaft Unfasten the key Caution on Mounting alignment shaft at the B There is a key alignment at right side the right shaft When mounting insert the right shaft first while turning After inserting the right shaft mount the horizontal blade first to the center shaft and then to the left shaft 141 Removal Procedure SiBE041101 Indoor Unit Step
133. ge not to lose the clip pipe thermistor for the thermistor c e ys d Discharge pipe thermistor R12286 12287 Cut the clamp and pull out the outdoor heat exchanger thermistor exchanger Removal Procedure 232 Outdoor Unit RK X 50J2V1B SiBE041101 4 6 Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work step Procedure Ponts Remove the screw and remove the four way Warning valve coil H Be careful to get yourself burnt with the pipes and other OU way parts that are heated by the valve coil gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas B Before working make sure that the refrigerant Cautions for restoration gas is empty in the circuit 1 Restore the piping by non Be sure to apply nitrogen CH oxidation brazing replacement when X 2 It is require
134. h hand when they are swinging the mechanism may be broken e Always use a remote controller to adjust the louvers angles In side the air outlet a fan is rotating at a high speed NOTE B Note on the angles of the flaps In DRY operation e The flaps swinging range depends on the COOL operation operation See the figure COMFORT 2 B Note 3 D airflow AIRFLOW 86 Using 3 D airflow circulates cold air which Upper limit 90 b tends to collected at the bottom of the room Lower limit operation and hot air which tends to collect near the ks In HEAT operation ceiling throughout the room preventing are lt as of cold and hot developing Stop operation c gt 30 Upper limit 70 Lower limit 80 COMFORT AIRFLOW Lower limit Stop operation 13 55 Operation Manual SiBE041101 Operation Manual 2 4 COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW operation The flow of air will be in the upward direction while in COOL operation and in the downward direction while in HEAT operation which will provide a comfortable wind that will not come in direct contact with people COOL operation B INTELLIGENT EYE operation INTELLIGENT EYE is the infrared sensor which detects the human movement If no one is in the room for more than 20 minutes the operation automatically changes to energy
135. haft B sure to remove the lower screws first If the upper screws are removed first the fan motor the center of gravity of which is toward the front may tilt down or fall getting you injured Removal Procedure SiBE041101 Outdoor Unit RK X 50J2V1B Procedure Points Release the fan motor m When reassembling put the lead wire from the 2 fan motor lead wire through hooks and pull the fan the back of the fan motor so motor out as not to be entangled with the outdoor fan Fan motor lead wire 174 T oS R5265 Removal Procedure 222 Outdoor Unit RK X 50J2V1B SiBE041101 4 3 Removal of Electrical Box Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Ste Procedure Points 1 Remove the 2 screws Preparation of the shield plate B Remove the top panel and the front panel according to the Removal of Outer Panels 2 Slide the shield plate upward to unfasten the 1 hook on the bottom left and then remove the shield plate R5267 3 Disconnect the 2 power supply cables and the 1 earth wire
136. he following conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 on the indoor unit again 3 Press the ON OFF button on the remote controller 4 Press the forced cooling operation ON OFF button SW1 on the outdoor unit The protection functions are prior to all others in the forced cooling operation Indoor Unit ON OFF button SW1 R14040 Outdoor Unit 20 25 35 class 1 17777 Screwdriver Push here R13824 Trial Operation and Field Settings 240 Forced Cooling Operation SiBE041101 Outdoor Unit 50 class Forced cae operation 1 ON OFF switch R14176 1 Note 42 class models have no forced operation ON OFF button on the outdoor unit PCB Carry out forced cooling operation from indoor unit 241 Trial Operation and Field Settings 51 041101 Trial Operation 3 Trial Operation Outline 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts such as louver movement are working properly B The air conditioner requires a small amount of power in its standby mode If the system is not to be used for some tim
137. heat exchanger thermistor Defective indoor unit PCB 82 Troubleshooting SiBE041101 Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 06 YES Provide sufficient air passage Is there any short circuit O N Check the air filter N Clean the air filter lt lt m 5 Check the dust accumulation on the indoor heat exchanger YES Clean the indoor heat exchanger NO Check No 06 Check the indoor heat exchanger thermistor Does it conform to the thermistor characteristic chart Replace the thermistor Replace the indoor unit PCB R7131 83 Service Diagnosis SiBE041101 Troubleshooting 4 4 Fan Motor DC Motor or Related Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis 1 E The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Layer short inside the fan motor winding Breaking of wire inside the fan motor Breaking of the fan motor lead wires Defective capacitor of the fan motor Defective indoor uni
138. hecking the input current value and the compressor Detection running frequency If the refrigerant is short the input current is smaller than the normal value Refrigerant shortage detection Il Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve If the refrigerant is short the discharge pipe temperature tends to rise Refrigerant shortage detection Ill Refrigerant shortage is detected by checking the difference between suction and discharge temperature Malfunction Refrigerant shortage detection I Decision The following conditions continue for 7 minutes Conditions lt 20 25 35 42 class gt Input current x input voltage lt A x output frequency Output frequency gt C ao 685 _ 22585 cass 6400865 20725138 dass 606 5 _ lt 50 class gt Input current lt D x output frequency E Output frequency gt F 59 EA Refrigerant shortage detection The following conditions continue for 80 seconds Opening of the electronic expansion valve gt G Discharge pipe temperature gt x target discharge pipe temperature J 8 puse JCC 30 128 128 cooling 20 heating 45 117 Service Diagnosis SiBE041101 Supposed Causes Service Diagnosis Troubleshooting Refrigerant shortage detection Ill 20 25 35 class only When the difference of the temperature is smaller than K C
139. hermistor or Related Abnormality Indoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 06 Refer to P 125 Service Diagnosis moor Lo rs gt p The temperatures detected by the thermistors determine thermistor errors The thermistor input is more than 4 96 V or less than 0 04 V during compressor operation B Disconnection of connector B Defective thermistor B Defective indoor unit PCB N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the connection of connectors Correct the connection Check No 06 Check the thermistor resistance value Replace the thermistor Replace the indoor unit PCB R7134 Indoor heat exchanger thermistor L5 Room temperature thermistor 86 Troubleshooting SiBE041101 4 6 Signal Transmission Error between Indoor Unit and Outdoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 10 Refer to P 127 87 The data received from the outdoor unit in indoor unit outdoor unit signal transmission is checked whether it is normal The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal
140. ically switching the air conditioner on or off at night or in the morning You can also use OFF TIMER and ON TIMER in combination B To use OFF TIMER operation Check that the clock is correct If not set the clock to the present time 1 Press e OFF and setting time are displayed on the LCD e HD is displayed on the LCD e OFF blinks A 2 Press until the time setting reaches v the point you like Each pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press again The TIMER lamp lights up TEO 2 CANCEL B To cancel the OFF TIMER Operation 4 Press OFF and setting time disappear from the LCD e and day of the week are displayed on the LCD The TIMER lamp goes off NOTE B Notes on TIMER operation When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote controller batteries are replaced e When operating the unit via the ON OFF TIMER the actual length of operation may vary from the time entered by the user Maximum approx 10 minutes B NIGHT SET mode When the OFF TIMER is set the air conditioner automatically adjusts the temperature setting 0 5 C up in COOL 2 0 C down in HEAT to prevent excessive cooling heating for your pleasant sleep
141. ie pc P Cj R8088 Removal Procedure 148 Indoor Unit SiBE041101 Step Procedure 4 Remove the INTELLIGENT EYE sensor PCB Unfasten the 3 hooks and remove the INTELLIGENT EYE sensor PCB Disconnect the connector S26 from the INTELLIGENT EYE sensor PCB 5 Remove the signal receiver PCB 1 Unfasten the hooks and remove the signal receiver PCB 2 Disconnect the connector S48 from the signal receiver PCB R8091 149 Removal Procedure SiBE041101 Indoor Unit Procedure 2 HUM the 6 Remove the display PCB 6 Remove the display PCB B The display PCB is The figure shows the positioned on the rear side connection of wire of the signal receiver unit harness for the display PCB Display PCB Unfasten the 4 hooks and remove the display PCB Disconnect the connector S49 from the display PCB LED 3 Green AT LED 2 Yellow LED 1 Green R8096 7 move the control 7 Remove the control PCB the lower 2 hooks of the control PCB Control PCB Removal Procedure 150 Indoor Unit Lift up the bottom of the control PCB and pull it out The figures show the names of the PCB component parts Procedure an S A One J 1D Y LA 94 cU 5 900 pc 541 S46 1825 SiBE041101
142. ight to the left move downward move from the left to the right move upward gt S gt 2 3 13554 The vertical swing is controlled not to blow the air directly on the person in the room 80 R14189 R12181 Function and Control SiBE041101 Main Functions 1 4 Fan Speed Control for Indoor Units Outline Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature This is done through phase control and Hall IC control For more information about Hall IC refer to the troubleshooting for fan motor on page 84 Automatic Fan In automatic fan speed operation the step SL is not available Cooling Heating R6834 6833 Speed Control POWERFUL The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic lt Cooling gt The following drawing explains the principle of fan speed control for cooling Room thermistor temperature target temperature fan speed MH 43 C 2 5 C M 2 C 1 5 C ML 1 C 0 5 C L R12317 automatic fan speed operation upper limit is at M tap in 30 minutes from the operation start lt Heating gt On heating mode the fan speed is regulated according to
143. ing appliance in combination with the air conditioner The heat pump system heats the room by circulating hot air around all parts of the room After the start of heating operation it takes some time before the room gets warmer In heating operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit A pinging sound may be heard during defrosting operation which however does mean that the air conditioner has failures B Note on COOL operation This air conditioner cools the room by releasing the heat in the room outside Therefore the cooling performance of the air conditioner may be degraded if the outdoor temperature is high B Note on DRY operation The computer chip works to rid the room of humidity while maintaining the temperature as much as possible It automatically controls temperature and airflow rate so manual adjustment of these functions is unavailable B Notes on AUTO operation e In AUTO operation the system selects an appropriate operation mode COOL or HEAT based on the room and outside temperatures and starts the operation The system automatically reselects setting at a regular interval to bring the room temperature to user setting level B Note on FAN operation e This mode is valid for fan only B Note on airflow rate setting e
144. ing of the button advances the mode setting in sequence ML FAN A AUTO 3 HEAT ON OFF DRY e FAN H TUE 6 COOL COOLING ONLY 4 model HEAT PUMP model ON OFF 2 Press e is displayed on the LCD The OPERATION lamp lights up TES me B To stop operation ON OFF 3 Press 4 disappears from the LCD Then OPERATION lamp goes off B To change the temperature setting TEMP 4 Press 4 or AUTO or COOL or HEAT operation DRY or FAN operation Press A raise the temperature and press W lower the temperature The temperature setting is not variable Set to the temperature you like 10 Operation Manual 52 Operation Manual SiBE041101 B To change the airflow rate setting 5 Press AUTO or COOL or HEAT or FAN operation DRY operation 5 levels of airflow rate setting 3 from to FE plus A The airflow rate setting is not variable are available Indoor unit quiet operation When the airflow is set to 24 the noise from the indoor unit will become quieter Use this when making the noise quieter NOTE B Notes on HEAT operation Since this air conditioner heats the room by taking heat from outdoor air to indoors the heating capacity becomes smaller in lower outdoor temperatures If the heating effect is insufficient it is recommended to use another heat
145. ing temperature If the discharge pipe thermistor is disconnected the electronic expansion valve opens according to the outdoor temperature and the operation frequency and operates for a specified time and then stops After 3 minutes of waiting the operation restarts and checks if the discharge pipe thermistor is disconnected If the discharge pipe thermistor is disconnected the system stops after operating for a specified time If the disconnection is detected 4 5 times depending on the model in succession then the system is shut down When the compressor runs for 60 minutes without any error the error counter is reset Function and Control 46 Control Specification SiBE041101 Detail When the starting control cooling A seconds heating B seconds finishes the detection timer for disconnection of the discharge pipe thermistor C seconds starts When the timer is over the following adjustment is made 1 When the operation mode is cooling When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C lt outdoor heat exchanger temperature 2 When the operation mode is heating When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6 C lt indoor heat exchanger temperature A seconds B seconds 120 seconds 630 630 Adjustment when the thermistor is disconnected Wh
146. injury Warning Reference reference guides the reader to other places in this binder or in this manual where he she will find additional information on a specific topic SiBE041101 Part 1 List of Functions Eel eee vee 2 1 1 COOMO 2 UE Heat QUIDNI ME 3 List of Functions SiBE041101 Functions 1 Functions 1 1 Cooling Only Inverter with Inverter Power Control Health amp Air Purifying Filter Function 10 Clean 1 Operation Limit for Cooling Photocatalytic Deodorizing Filter i Operation Limit for Heating CWB Air Purifying Filter with Photocatalytic PAM Control Deodorizing Function Standby Electricity Saving ERE Titanium Apatite Photocatalytic Compressor Oval Scroll Compressor p Air Purifying Filter Swing Compressor JoJo Wr JoJo Rotary Compressor WeeCkenF tPani JoJo Reluctance DC Moir 9 WasabeGile J Comforabie Power Airiow MOLD PROOF Operation Atow Dual aps O Goos Sieep Coating Operation c 212 Q2 gt lt e SN DY DL S gt lt 0 Lx LL E en gt N e LO 42 gt lt E LL m gt N gt N st t m gt amp 5 E gt lt LL co
147. inues for 10 min X 0 5 C 17 5 or Y 0 5 C zone B continues for 10 min Zone C Thermostat ON 0 5 C Zone A Thermostat OFF R11581 25 Function and Control SiBE041101 Main Functions 1 6 Automatic Operation Outline Detail Function and Control Automatic Cooling Heating Function When the AUTO mode is selected with the remote controller the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start up and automatically operates in that mode The unit automatically switches the operation mode to maintain the room temperature at the set temperature Ts set temperature set by remote controller Tt target temperature determined by microcomputer Tr room thermistor temperature detected by room temperature thermistor C correction value The set temperature Ts determines the target temperature Tt Ts 18 30 C The target temperature Tt is calculated as Tt TS C where C is the correction value 0 Thermostat ON OFF point and mode switching point are as follows Tr means the room thermistor temperature 1 Heating Cooling switching point Tr gt Tt 2 5 2 Cooling Heating switching point Tr lt Tt 2 5 C 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation During initial operation Tr gt Ts C
148. ion of the Set the unit to cooling operation and check the electronic expansion valve temperature of the liquid pipe to see if the electronic expansion valve works Diagnose with remote controller indication The unit operates but does Check for wiring and piping errors in not cool or does not heat the connection between the indoor unit and outdoor unit Diagnose by service port pressure Check for refrigerant shortage 117 and operating current Large operating noise and Check the output voltage of the 128 vibrations power module Check the power module Check the installation condition Check if the required spaces for installation specified in the installation manual etc are provided Service Diagnosis 76 Service Check Function SiBE041101 3 Service Check Function 3 1 ARC452 Series Check Method 1 1 When the timer cancel button is held down for 5 seconds 5 indication appears on the temperature display section DAIKIN ON OFF OFF Timer cancel button CANCEL 17125 Y ARC452 Series gt R13820 2 Press the timer cancel button repeatedly until a long beep sounds m The code indication changes in the sequence shown below d Note 1 Ashort beep pi and two consecutive beeps pi pi indicate non corresponding codes 2 to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns t
149. ismount because of the cable If the cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable may damage the cable Do not mix air or gas other than the specified refrigerant R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leaking point and repair it before charging the refrigerant After charging refrigerant make sure that there is no refrigerant leak If the leaking point cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it may generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installation work is not conducted securely the equipment may fall and cause injury Introduction SiBE041101 Check to make
150. ited for 3 minutes after turning it off Except when defrosting 3 3 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is set as follows The function is not activated when defrosting Hz Frequency C B sec D E F Time E gt 913528 39 Function and Control SiBE041101 Control Specification 3 4 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor If the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep this temperature from going up further Detail C C Drooping zone Keep zone EC Reset zone Discharge pipe R13529 temperature 3925sdass 42065 09 _ ACO s 0 C C peo 99 9o 9 Function and Control 40 Control Specification SiBE041101 3 5 Input Current Control Outline The microcomputer calculates the input current during the compressor is running and sets the frequency upper limit from the input current In case of heat pump model this control which is the upper limit control of the frequency takes priority to the lower limit of control of four way valve operation compensation Detail Compressor Stop Stop Zone Drooping Zone Keep Zone Input current Reset Zone R14246 Frequency control in each zone Stop zone After 2 5 seconds in this zo
151. l Procedure 208 Outdoor Unit 642 2 1 SiBE041101 3 Removal of Four Way Valve Electronic Expansion Valve Procedure Be sure to wait for 10 minutes or more after turning off all power Warning 1 Remove the peripheries 1 Remove the screw and remove the four way supplies before disassembling work Procedure valve coil wll E gt Ive coil A LE UR N Ey RNF CA i th 2 Pull out the electronic expansion valve coil cme S SN 4 MN lt i D YS Remove the putty HN 1r ag Ce MM H lt 4 Remove the terminal cover uz Kes a 209 Preparation B Remove the sound blankets R7703 Detach the four way valve coil and the 2 clamps and then detach the wire harnesses Removal Procedure SiBE041101 Outdoor Unit 642 2 1 Procedure Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Remove the four way valve and electronic expansion valve Heat up the 2 brazed parts of the electronic HH te expansion valve and lt remove it Heat up the brazed parts of the four way valve Pull the pipe with pliers and disconnect ud my Removal Procedure Warning Be car
152. latform or frame may cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding may cause an electrical shock SiBE041101 Introduction Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MQ or higher Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor Be sure to install the packing and seal on the installation frame properly For unitary type If the packing and seal are not installed properly water may enter the room and only 1 2 Used Icons wet the furniture and floor Icons are used to attract the attention of the reader to specific information The meaning of each icon is described in the table below Icon Type of Description Information Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Note Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get Caution an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of personal
153. n fin Removal Procedure 202 Outdoor Unit RK X 42J2V1B SiBE041101 3 4 Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points O 1 Remove the partition plate Partition plate um 1 m 3 D ES e MUS ey LY i 2217 1 Remove the 2 screws MA wor VES PRD When reassembling fit the lower hook into the bottom frame 2 The partition plate has hooks on the lower side Lift and pull the M remove PH AT Remove the screw to remove the reactor 203 Removal Procedure SiBE041101 Outdoor Unit 642 2 1 Step Procedure Points Since the piping ports are blanket torn easily remove the 1 Untie the string open CI 2 blanket carefully the sound blanket gi outer and pull it out SHAG S 5 7 il 02 2 2 Remove the sound blanket top upper 5 T we dU 5 3 Remove sound blanket top lower R8178 4 Open the sound blanket E 1 inner and pull itout NW 12201 Removal Procedure 204 Outdoor Unit 642 2 1 SiBE041101 3 5 Removal of Outdoor Fan Fan Motor
154. n is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances B To start ECONO operation 1 Press NS is displayed on the LCD B To cancel ECONO operation 2 Press VEGONO again disappears from the LCD Running current and power consumption Maximum during Normal normal operation operation Maximum during ECONO operation ECONO operation Time From start up until set temperature is reached e This diagram is a representation for illustrative purposes only The maximum running current and power consumption of the air conditioner in ECONO operation vary with the connecting outdoor unit NOTE B Notes on ECONO operation e ECONO operation can only be set when the unit is running ECONO operation is a function which enables efficient operation by limiting the power consumption of the outdoor unit operating frequency ECONO operation functions in AUTO COOL DRY and HEAT operation e POWERFUL and ECONO operation cannot be used at the same time Priority is given to the function of whichever button is pressed last f the level of power consumption is already low ECONO operation will not drop the power consumption 20 Operation Manual 62 Operation Manual SiBE041101 2 8 OFF TIMER Operation OFF TIMER Operation Timer functions are useful for automat
155. n of the operating indoor unit B The difference between the room thermistor temperature and the target temperature The target frequency is adapted by additional parameters in the following cases B Frequency restrictions Initial settings B Forced cooling operation To regulate the capacity a frequency control is needed The inverter makes it possible to vary the rotation speed of the compressor The following table explains the conversion principle Phase Description supplied AC power source is converted into the DC power source for the present The DC power source is reconverted into the three phase AC power source with variable frequency B When the frequency increases the rotation speed of the compressor increases resulting in an increased refrigerant circulation This leads to a higher amount of the heat exchange per unit B When the frequency decreases the rotation speed of the compressor decreases resulting in a decreased refrigerant circulation This leads to a lower amount of the heat exchange per unit Function and Control SiBE041101 Main Functions Drawing of The following drawing shows a schematic view of the inverter principle Inverter Refrigerant circulation rate high high speed Amount of heat exchanged air large Amount of heat exchanged air large Amount of heat gt Amount of heat exchanged air small exchanged air small low speed _ 4 freq 50 H
156. nd the DC voltage before the compressor starts Malfunction B The system checks the compressor current right after the compressor starts Detection Malfunction The supply voltage and the DC voltage is obviously low or high Decision The compressor current does not run when the compressor starts Conditions Supposed B Disconnection of reactor Causes B Disconnection of compressor harness B Defective outdoor unit PCB Defective compressor Troubleshooting Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power Check the connection of the reactor NO Connection OK Connect it properly YES Check the connection of the compressor NO Connection OK Connect it properly YES Disconnect the reactor from the outdoor Check the reactor unit PCB and measure the resistance value between reactor terminals with tester NO Replace the reactor YES Disconnect the compressor relay harness Check the compressor from the outdoor unit PCB and measure the resistance value between the each 3 terminals of the compressor with tester Between all each terminal 10 or less NO Replace the compressor or the compressor relay harness YES Restart the operation again and if the error occurs again replace the outdoor unit PCB R7174 Service Diagnosis 102 Troubleshooting SiBE041101 4 17 Positi
157. ne the compressor is stopped Drooping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is pulled down by 2 Hz every second until it reaches the keep zone Keep zone The present maximum frequency goes on Reset zone Limit of the frequency is canceled Cooling Cooling Cooling 6 75 2 5 9 B A Normalmode 60 75 625 _ 3 9 3 525 675 55 6 ECONOmeds 28 Heating A Nomamode 90 95 90 _ mos 35 80 _ Limitation of current drooping and stop value according to the outdoor temperature The current droops when outdoor temperature becomes higher than a certain level depending on the model 41 Function and Control SiBE041101 Control Specification 3 6 Freeze up Protection Control Outline During cooling operation the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger The signal from the indoor unit is divided into zones Detail The operating frequency limitation is judged with the indoor heat exchanger temperature Indoor heat exchanger thermistor temperature Drooping zone Stop zone 3 Heating Peak cut Control Outline During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure Det
158. nector for the four way valve coil S80 7 R0257 Disconnect the connector for the S90 thermistors S90 Bd K 4 d 924 0258 195 Removal Procedure SiBE041101 Outdoor Unit 642 2 1 Step Procedure 10 Disconnect the relay connector for the UU IA compressor x 1 3 7 Ain FT i 1 OZA R0259 11 Disconnect the 2 connectors for the reactor 80260 12 Release the discharge Becareful not to lose the clip pipe thermistor m for the thermistor NS lt ENS N R12279 Discharge pipe thermistor 13 Detach the clamp for the thermistors from the electrical box R12196 Removal Procedure 196 Outdoor Unit 642 2 1 14 Remove the screw in front of the electrical box 15 Lift and remove the electrical box Procedure SiBE041101 Removal Procedure SiBE041101 Outdoor Unit 642 2 1 3 3 Removal of PCB Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Remove the screw and gt Preparation remove the electrical Electrical box cover Remove the panels box cover according to the Removal of Outer Panels Remove the electrical box according to the Removal of Electrical Box 2 Deta
159. ng Filter and Titanium Apatite Photocatalytic Deodorizing Filter as a single highly effective filter The filter traps microscopic particles decompose odors and even deactivates bacteria and viruses It lasts for 3 years without replacement if washed about once every 6 months 1 12 5 Auto restart Function Even if a power failure including one for just a moment occurs during the operation the operation restarts automatically when the power is restored in the same condition as before the power failure Note It takes minutes to restart the operation because the 3 minute standby function is activated 1 12 6 WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week up to 28 settings in total Those 3 items of ON OFF temperature and time can be set Refer to page 65 for detail 33 Function and Control SiBE041101 Function of Thermistor 2 Function of Thermistor A Outdoor Heat Exchanger Thermistor B Discharge Pipe Thermistor C Indoor Heat Exchanger Thermistor Function and Control Cooling Only Electronic A expansion valve H E Compressor B R11611 Heat Pump Electronic A expansion valve Four way valve Compressor R11591 The outdoor heat exchanger thermistor is used for controlling target discharge pipe temperature The system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the el
160. numerous countries throughout the world Daikin Industries Ltd does not have control over which products are exported to and used ina particular country Prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used This statement does not purport to exclude restrict or modify the application of any local legislation e Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion e Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion e Read the User s Manual carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced
161. o Ba Reon Sang e opem COOL HEATModelock HOMELEAVE Operation ECONO Operation o T indoor Unit ONOFFButon o SignalRecevingsin _ o O o TT RIC wih Backlit Temperature Display SSC S d Note Holding Functions Lower limit can be extended to 15 C by cutting EM jumper 20 42 class or turning switch 50 class No Functions facility use only List of Functions 2 Functions SiBE041101 1 2 Heat Pump Basic Inverter with Inverter Power Control O Health amp Air Ai PurityingFiller Ai PurityingFiller Function 10 Clean Operation Limit for Cooling Photocatalytic Deodorizing Filter Operation Limit for Heating ES Sesion Ed Photocatalytic IPAMConro Titanium Apatite Photocatalytic Compress Compressor Sing Compressor OO WeeGemFarad Washable Gale 6 6 MOLD PROOF Operation opos Power SS ENETS 0 a QN CN 55 co LO LO ev LO oN af 40 H en gt CN e LO 00 gt lt m gt N um CN x eo gt x 2 i or eo gt CN gt O 00 Q 0 00
162. o operate the equipment may cause an electrical shock or fire vi Introduction vil SiBE041101 Be sure to wear a safety helmet gloves and a safety belt when working at a high place more than 2 m Insufficient safety measures may cause a fall accident In case of R 410A refrigerant models be sure to use pipes flare nuts and tools for the exclusive use of the R 410A refrigerant The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure Do not repair the electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner by splashing water Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and cause injury Be sure to conduct repair work with appropriate tools The use of inappropriate tools may cause injury Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work Working on the unit when the refrigerating cycle section is hot may cause burns Use the welder in a well ventilated place Using the welder in an enclosed room may cause oxygen deficienc
163. o the normal mode 77 Service Diagnosis SiBE041101 Service Check Function Check Method 2 1 Press the buttons TEMPA TEMPY MODE at the same time CL R8381 The figure of the ten s place blinks WDAIKIN R8382 2 Press the TEMPA or VW button and change the figure until you hear the sound of beep or pi pi ON OFF CJC JC J R8383 3 Diagnose by the sound The figure of the ten s place does not accord with the error code pi The figure of the ten s place accords with the error code but the one s not The both figures of the ten s and one s place accord with the error code The figures indicated when you hear the beep sound are error code Refer to page 80 4 Press the MODE button ON OFF R8384 R8385 Service Diagnosis 78 Service Check Function SiBE041101 5 Press the TEMPA or V button and change the figure until you hear the sound of ON OFF S CJL CJC JC J R8383 6 Diagnose by the sound pi The figure of the ten s place does not accord with the error code pi pi The figure of the ten s place accords with the error code but the one s not The both figures of the ten
164. ocedure Ponts Remove the 2 nuts of the compressor Warning Be careful not to get yourself burnt with pipes and other parts that are heated by the gas brazing machine Warning If the refrigerant gas leaks during work ventilate the room If the refrigerant gas is exposed to flames toxic gas may be generated Warning Since it may happen that the Compressor refrigerant oil in the R11889 compressor catches fire prepare wet cloth so as to extinguish fire immediately Before working make sure that the refrigerant is Caution empty in the circuit From the viewpoint of global Be sure to apply nitrogen environment protection do replacement when not discharge the refrigerant heating up the brazed gas in the atmosphere Make d sure to collect all the Heat up the brazed part refrigerant gas of the discharge side 22 disconnect A GS T Cautions for restoration 1 Restore the piping by non oxidation brazing 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep R12031 below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Discharge side In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore Cut pipes on the main unit with a tube cuiter in order
165. oller Display Method of An input overcurrent is detected by checking the input current value with the compressor Malfunction running Detection Malfunction The following current with the compressor running continues for 2 5 seconds Decision Cooling Heating Above 9 25 20 A depending on the model Conditions Supposed Defective compressor Causes Defective power module B Defective outdoor unit PCB B Short circuit Troubleshooting N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 07 An input overcurrent may result from wrong internal wiring If the wires have been disconnected and Refer to P 126 reconnected for part replacement for example and the system is interrupted by an input overcurrent take the following procedure Check No 08 Check the installation condition Refer to P 126 Start operation and measure the Check No 14 Refer to P 129 95 Input current flowing above its stop level Replace the outdoor unit PCB Turn off the power and disconnect the harnesses U V and W Check No 14 Inverter checker Check with the inverter checker No 1225477 Correct the power supply or replace the PM1 Replace the outdoor unit PCB Turn off the power and reconnect the harnesses Turn on the power again and start operation Check No 08 Check the discharge pressure R14171 Service Diagnosis
166. ompatible models To secure the connection once disconnect the connector and then reconnect it Replace the indoor unit PCB 1 Correct the connection YES Check the connection of connectors See Note Error repeats Replace the indoor unit PCB 1 NO Completed R11704 d Note X Check the following connector 81 Model Type Wall Mounted Type Terminal board Control PCB Service Diagnosis SiBE041101 Troubleshooting 4 3 Freeze up Protection Control or Heating Peak cut Control Remote H Controller Display Method of m Malfunction Detection E Malfunction E Decision Conditions E Supposed n n Service Diagnosis e Freeze up protection control During cooling operation the freeze up protection control operation halt is activated according to the temperature detected by the indoor heat exchanger thermistor Heating peak cut control During heating operation the temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc Freeze up protection control During cooling operation the indoor heat exchanger temperature is below 0 C Heating peak cut control During heating operation the indoor heat exchanger temperature is above 65 C Short circuited air Clogged air filter of the indoor unit Dust accumulation on the indoor heat exchanger Defective indoor
167. ompressor overload co Compressor lock DC fan lock Input overcurrent detection Discharge pipe temperature control High pressure control in cooling Compressor system sensor abnormality Position sensor abnormality DC voltage current sensor abnormality 20 25 35 42 class CT or related abnormality 50 class Outdoor temperature thermistor or related abnormality Discharge pipe thermistor or related abnormality Outdoor heat exchanger thermistor or related abnormality Electrical box temperature rise Radiation fin temperature rise Output overcurrent detection Radiation fin thermistor or related abnormality Signal transmission error on outdoor unit PCB 50 class only ERO Four way valve abnormality Displayed only when system down occurs Service Diagnosis 80 Troubleshooting SiBE041101 4 2 Indoor Unit PCB Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting e The system checks if the circuit works properly within the microcomputer of the indoor unit The system cannot set the internal settings Wrong models interconnected B Defective indoor unit PCB B Disconnection of connector Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the combination of the indoor and outdoor unit Match the c
168. on Sensor Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 103 gt compressor start up failure is detected by checking the compressor running condition through the position detection circuit Ifthe error repeats the system is shut down Heset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Disconnection of the compressor relay cable Defective compressor Defective outdoor unit PCB Start up failure caused by the closed stop valve Input voltage is out of specification Service Diagnosis SiBE041101 Troubleshooting Check No 14 Refer to P 129 Check No 29 Refer to P 132 Service Diagnosis Troubleshooting 20 25 35 42 class N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Turn off the power Check the power supply voltage NO Voltage as rated Correct the power supply YES Check No 29 Check the short circuit of the diode bridge NO Replace the outdoor unit PCB or the outdoor fan YES Check the connection Electrical components or compressor harnesses connected as specified NO Reconnect them as specified YES Turn on the power Check the electrolytic capacitor voltage YES Replace the outdoor unit PCB Turn off
169. onnecting or disconnecting Caution connectors or parts may be damaged Check No 07 Turn off the power and turn it on WARNING Refer to P 126 again To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above C C and stops when it drops below B Check No 09 Refer to P 127 Error again or outdoor fan activated Check the radiation fin temperature N Above A C YES Replace the outdoor unit PCB Check No 09 Check the outdoor fan or related NG Replace the fan motor Correct the connectors and fan motor lead wire Replace the outdoor unit PCB Too dirty Radiation fin dirty Clean up the radiation fin Slightly dirty Check No 07 Check the installation condition R13536 42 class ases 98 75 8 _ 8 70 75 95 8 35 50 class Service Diagnosis 112 Troubleshooting SiBE041101 4 22 Radiation Fin Temperature Rise Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 113 A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on If the radiation fin temperature with the compressor on is above A C The error is cleared when the radiation fin temperature drops below B C If the error repeats the system is shut down Reset condition Continuous run for about 60 minutes without
170. ontrol Specification 3 11 Electronic Expansion Valve Control Outline Detail 45 The following items are included in the electronic expansion valve control Electronic expansion valve is fully closed 1 Electronic expansion valve is fully closed when turning on the power 2 Pressure equalizing control Open Control Electronic expansion valve control when starting operation Electronic expansion valve control when frequency changed Electronic expansion valve control for defrosting Feedback Control 1 Discharge pipe temperature control SiBE041101 Electronic expansion valve control when the discharge pipe temperature is abnormally high Electronic expansion valve control when the discharge pipe thermistor is disconnected The followings are the examples of control which function in each mode by the electronic expansion valve control Operation pattern When power is turned ON O function x not function Control for abnormally high discharge Control when frequency changed pipe temperature Fully closed when power is turned ON Cooling operation Control of target discharge pipe temperature Heating operation Control of target discharge pipe temperature Pressure equalizing control Open control when starting Heating operation Continue Control of discharge pipe thermistor disconnection Pressure equalizing control Open control when starting Pressure equalizing control Open con
171. ooling operation Tr Ts Heating operation Cooling Operation Target temperature 2 5 Target temperature 2 0 Se T tt t 1 5 _ Thermostat OFF arget temperature 1 5 Thermostat OFF Target temperature 2 5 C Heating Operation R11893 Ex When the target temperature is 25 C Cooling 23 Thermostat OFF 22 C Switch to heating Heating 26 5 C Thermostat OFF 27 5 C Switch to cooling 26 Main Functions SiBE041101 1 7 Thermostat Control 27 Thermostat control is based on the difference between the room thermistor temperature and the target temperature Thermostat OFF Condition The temperature difference is in the zone A Thermostat ON Condition The temperature difference returns to the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry ON Room thermistor temperature target temperature Cooling 0 5 1 5 C B Cooling 2 0 C A Dry 2 5 2 0 OFF R12319 Heating OFF Room thermistor temperature target temperature A 1 5 C B 1 0 C C R12320 Function and Control SiBE041101 Main Functions 1 8 NIGHT SET Mode Outline Detail Function and Control When th
172. orced operation ON OFF button LED for operation green LED for timer yellow LED for INTELLIGENT EYE green Room temperature thermistor PCB 4 INTELLIGENT EYE Sensor PCB 1 S26 Connector for control PCB Printed Circuit Board Connector Wiring Diagram SiBE041101 PCB Detail PCB 1 Control PCB Printed Circuit Board Connector Wiring Diagram o C202 R186 546 Indoor Unit QS PoF w 2P206687 1 a gt zD306 0317 0505 525 2P206687 1 12 Indoor Unit PCB 2 Signal Receiver PCB 3 210728 1 3P210728 1 PCB 3 Display PCB RTH1 SW1 LED3 LED2 LED 3P210728 1 GRAVE YUE Wise 2 49 G o d LED3 LED2 LEDI S49 3P210728 1 PCB 4 INTELLIGENT EYE Sensor PCB 3EB86013 1 13 SiBE041101 Printed Circuit Board Connector Wiring Diagram SiBE041101 2 Outdoor Unit 2 1 RK X S20 25 35J2V1B Connectors and Other Parts PCB 1 Filter PCB 1 S11 2 E1 E2 HL2 HN2 HR1 FU1 FU3 V2 V3 iN O N 9 ee EO gt co PCB 2 Main PCB 1 S10 S20 S40 S50 S70 S80 S90 Oo 1 S Outdoor Unit Connector for main PCB Connector for terminal board Terminal for earth Connector for main PCB Connector for reactor Fuse 3 15 A 250 V Fuse 20 A 250 V Varistor Connector for filter PCB Connector for electronic expansion valv
173. osis SiBE041101 Troubleshooting 4 11 DC Fan Lock Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 15 Refer to P 131 Service Diagnosis gt gt C An error is determined with the high voltage fan motor rotation speed detected by the Hall IC B The fan does not start in 15 60 seconds depending on the model even when the fan motor is running If the error repeats 16 times the system is shut down Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Disconnection of the fan motor Foreign matters stuck in the fan Defective fan motor Defective outdoor unit PCB Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Fan motor connector disconnected Turn off the power and reconnect the connector Foreign matters in or around the fan Remove them Turn on the power Rotate the fan Fan rotates smoothly Replace the outdoor fan motor Check No 15 Check the rotation pulse input on the outdoor unit PCB Pulse signal generated Replace the outdoor fan motor Replace the outdoor unit PCB R11708 94 Troubleshooting SiBE041101 4 12 Input Overcurrent Detection gt gt A Remote Contr
174. ost COMO En 44 3 11 Electronic Expansion Valve 45 Marun cion S peu RE 48 20 Main Functions SiBE041101 1 Main Functions 1 1 Temperature Control Definitions of Temperatures Temperature Control The definitions of temperatures are classified as following Room temperature temperature of lower part of the room Set temperature temperature set by remote controller Room thermistor temperature temperature detected by room temperature thermistor Target temperature temperature determined by microcomputer 9 Target temperature Room thermistor temperature a Set temperature Room temperature R12321 The temperature of the room is detected by the room temperature thermistor However there is difference between the temperature detected by room temperature thermistor and the temperature of lower part of the room depending on the type of the indoor unit or installation condition Practically the temperature control is done by the target temperature appropriately adjusted for the indoor unit and the temperature detected by room temperature thermistor 1 2 Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle 21 The compressor is frequency controlled during normal operation The target frequency is set by the following 2 parameters coming from the operating indoor unit B The load conditio
175. oxic gas may be generated Warning Since it may happen that the refrigerant oil in the compressor catches fire prepare wet cloth so as to extinguish fire immediately Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to collect all the refrigerant gas Removal Procedure SiBE041101 Step Procedure Lift the compressor up to remove MILL LITT 4 Gar 4 4 ries Jb 7 Removal Procedure Outdoor Unit RK X S42J2V1B Cautions for restoration 1 Restore the piping by non oxidation brazing It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry In case of difficulty with gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect Note B Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheri
176. p temperatures M0 108 1 above 30Hz rising above 25Hz dropping 110 2 below 30Hz rising below 25Hz dropping 50 class Ifthe error repeats the system is shut down B Reset condition Continuous run for about 60 minutes without any other error Defective discharge pipe thermistor Defective outdoor heat exchanger thermistor or outdoor temperature thermistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB 98 Troubleshooting Troubleshooting Check No 04 Refer to P 123 Check No 06 Refer to P 125 Check No 11 Refer to P 127 99 SiBE041101 Be sure to turn off power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 06 Check the thermistors Replace the defective Discharge pipe thermistor thermistor e Outdoor heat exchanger thermistor Outdoor temperature thermistor Check No 04 Check the electronic expansion valve NG Replace the electronic expansion valve or the coil Check No 11 Check the refrigerant line Refer to the refrigerant line check procedure Refrigerant shortage Four way valve e Water mixed e Stop valve Replace the outdoor unit PCB R7141 Service Diagnosis SiBE041101 Troubleshooting 4 15 High P
177. pen the 2 hooks of the fan motor lead wire 6 Release the fan motor When reassembling put the lead wire fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan Ds Lead wire Outdoor fan R12215 7 Remove the 4 screws and 4 rubber vibration isolators to remove the fan motor S Mm R8191 207 Removal Procedure SiBE041101 Outdoor Unit 642 2 1 3 6 Removal of Thermistors Procedure Warning sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Release the discharge not to lose the clip pipe thermistor for the thermistor R12279 2 Cut the clamp and pull Q out the outdoor heat exchanger thermistor NI y nt y lt lL A 6 a ete cli a LO r NER ZH 10 gs WWW 2 9 5 C CA AV Outdoor heat exchanger thermistor R8193 3 The thermistors for outdoor temperature discharge pipe outdoor heat exchanger are united as one assembly 4 The figure shows the arrangement of the thermistors NX 5 7 ME da LE ASS Bes CC 5 QR Cy VENE EV 9 Qo 7 G3 88194 Remova
178. r and check the continuity using a tester Check the continuity between the pins 1 6 2 6 3 6 and 4 6 If there is no continuity between the pins the EV coil is faulty Harness 5P 6 1 5 S20 Connector Check 5 5 123456 ent R14212 If the continuity is confirmed in the above step 3 the outdoor unit PCB is faulty 1 Note Please note that the latching sound varies depending on the valve type 123 Service Diagnosis SiBE041101 Check 5 3 Four Way Valve Performance Check Check No 05 Service Diagnosis Turn off the power and turn it on again Four way valve coil Start heating operation Cooling Dry No continuity Heating Continuity S80 voltage at 220 240 VAC with compressor on Fig 1 NO Replace the outdoor unit PCB YES Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 1000 2000 NO Replace the four way valve coil YES Replace the four way valve R11903 Fig 1 Voltage at S80 220 240 VAC Time Compressor e R11904 124 Check 5 4 Thermistor Resistance Check Check No 06 125 SiBE041101 Disconnect the connectors of the thermistors from the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the table and the graph below Thermistor temperature C
179. ransistor harness for looseness Correct it as required Also NO replace the cracked pipe Check the pipes for improper contact Correct them as required Also replace the cracked pipe Check No 04 Electronic expansion valve Replace the electronic functioning NO expansion valve YES Change for a specified amount of fresh refrigerant Refrigerant shortage error again Check No 06 Check the thermistors Replace the defective one s Replace the outdoor unit PCB Error again Replace the compressor Completed Completed R12015 119 Service Diagnosis SiBE041101 Troubleshooting 4 25 Low voltage Detection or Over voltage Detection Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis p i x Low voltage detection An abnormal voltage drop is detected by the DC voltage detection circuit Over voltage detection An abnormal voltage rise is detected by the over voltage detection circuit Low voltage detection The voltage detected by the DC voltage detection circuit is below 150 180 V depending on the model Over voltage detection An over voltage signal is fed from the over voltage detection circuit to the microcomputer The voltage is over 400 V If the error repeats the system is shut down Heset condition Continuous run for about 11 minutes
180. re Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Pons 1 Appearance features Warning Dangerous High voltage A high voltage is applied to all the electric circuits of this product including thermistors When the signal receiver catches a signal from the R7900 remote controller the receiving tone sounds and the operation lamp blinks immediately to confirm the Operation lamp signal reception When the ON OFF button is E gt kept pressed for 5 seconds TIMER lamp sl INTELLIGENT the forced cooling operation TFE EYE lamp is performed for about 15 INTELLIGENT minutes EYE sensor Signal receiver ON OFF ON OFF button Room temperature thermistor 2 Remove the air filters 1 Hold the both sides of Front panel the front panel and open the panel to the position where it stops 2 Slightly push up the The air filter is not marked center knob of the air for difference between the filter and release the right and left sides hooks E The air filter can be set E easily by inserting it along Pull out the air filter the guides downward and remove Insert the air filter with the it FRONT mark faced up Be sure to insert the hooks at 2 lower positions when mounting the air
181. ressor running condition through the position detection circuit lt 20 25 35 42 class gt B Operation stops due to overcurrent Ifthe error repeats 16 times the system is shut down Reset condition Continuous run for about 11 minutes without any other error lt 50 class gt B A compressor lock is detected by the current waveform generated when applying high frequency voltage to the motor Ifthe error repeats 16 times the system is shut down Reset condition Continuous run for about 5 minutes without any other error Compressor locked Compressor harness disconnected Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn off the power Disconnect the harnesses U V and W Check No 14 Check with the inverter checker Inverter checker Part No 1225477 Correct the power supply or replace the PM1 Replace the outdoor unit YES PCB Turn off the power and reconnect the harnesses Turn on the power again and restart the system Emergency YES stop without compressor Replace the compressor running NO System shut NO down after errors repeated Hi is Check the electronic several times expansion valve Replace it as required YES Replace the compressor R14170 Service Diagn
182. ressure Control in Cooling Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 04 Refer to P 123 Check No 06 Refer to P 125 Check No 07 Refer to P 126 Check No 08 Refer to P 126 Check No 09 Refer to P 127 Service Diagnosis e E High pressure control operation halt frequency drop etc is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit B The temperature sensed by the outdoor heat exchanger thermistor rises above about 65 C B The error is cleared when the temperature drops below about 50 C The installation space is not large enough Dirty outdoor heat exchanger Defective outdoor fan motor Defective stop valve Defective electronic expansion valve or coil Defective outdoor heat exchanger thermistor Defective outdoor unit PCB N Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check the installation space Check No 07 Check the installation condition Change the installation location or direction Clean the outdoor heat exchanger Check No 09 Check the outdoor fan NG Replace the fan motor Reconnect the connector or fan motor lead wires OK Check No 08 NG Check the discharge Replace the stop valve pressure
183. rge pipe temperature Previous discharge pipe temperature 47 Function and Control SiBE041101 Control Specification 3 12 Malfunctions 3 12 1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor Relating to Thermistor Malfunction 1 Outdoor heat exchanger thermistor 2 Discharge pipe thermistor 3 Radiation fin thermistor 4 Outdoor temperature thermistor 3 12 2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor Detail If the OL compressor head temperature exceeds 120 130 C depending on the model the system shuts down the compressor Ifthe inverter current exceeds 9 25 20 A depending on the model the system shuts down the compressor 3 12 3 Refrigerant Shortage Control Outline Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency it is regarded as refrigerant shortage The power consumption is small comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking a power consumption Refrigerant shortage zone 2 e O a 48 55 Hz Frequency depending on the model R12184 Il Detecting by discharge pipe temperature If the discharge pipe temperature is higher than the target discharge pipe temper
184. rotector gz AT 12 disconnect the connector for S40 the fan motor according to the Removal of Outer Panels Fan Motor R11846 2 Disconnect the connector for the four way valve coil S80 3 Disconnect the 2 connectors for the reactor R11844 171 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B Step Procedure 4 Disconnect the relay connector for the compressor inar 5 E p Pe 2 D AY D lt 11845 5 Disconnect the connector for the electronic expansion valve coil S20 6 Cut the clamp lt 0 7 Pull out the outdoor Be careful not to lose the clip heat exchanger for the thermistor thermistor Sl 4 ve Outdoor heat VU 72 exchanger thermistor R11851 Removal Procedure 172 Outdoor Unit RK X S20 25 35J2V1B 8 Release the discharge pipe thermistor 9 Lift and remove the electrical box 173 SiBE041101 Procedure Be careful not to lose the clip for the thermistor R12279 Discharge pipe thermistor R11849 Electrical Box R11852 Removal Procedure SiBE041101 Outdoor Unit RK X S20 25 35J2V1B 2 3 Removal of PCBs Procedure Warning Be sure to for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Remove the main PCB B
185. rvation of the selected day of the week will be copied A 4 Press to select the destination day of v the week Ex koe Lo A SELECT v SiBE041101 27 Operation Manual SiBE041101 Operation Manual WEEKLY TIMER Operation 5 Press The reservation will be copied to the selected day of the week The whole reservation of the selected day of the week will be copied To continue copying the settings to other days of the week repeat step 4 and step 5 6 Press to complete the setting is displayed on the LCD and WEEKLY TIMER operation is activated Setting Displays XI ON Confirmation Normal NOTE B Note on COPY MODE e The entire reservation of the source day of the week is copied in the copy mode In the case of making a reservation change for any day of the week individually after copying the content of weekly reservations press and change the settings in the steps of setting mode page 24 28 Operation Manual 70 Operation Manual SiBE041101 B Confirming a reservation e The reservation can be confirmed 1 Press e The day of the week and the reservation number of current day will be displayed A 2 Press to select the day of the week and v the reservation number to be confirmed A e Pressing displays reservation details v To change the confirmed reserved settings select the reservation number and
186. s connection with 2 32 2 with 2 wrenches wrenches When the pipings are disconnected protect the both openings of pipe side di and unit side from entering Caution 8168 of moisture From the viewpoint of global environment protection be sure to use a vacuum pump for air purging Removal Procedure 152 Indoor Unit Procedure Step 2 Remove the indoor heat exchanger Unfasten the hook of the piping fixture at the back of the indoor unit and pull out the pipe Piping fixture R10622 Widen the auxiliary pipe by about 10 20 degrees 10 20 deg Remove the 2 screws on the left side 7 9 SS Unfasten the upper hook on the right side with a flat screwdriver lt 2 lt 4 SS Lilli aW V LZ g Upper hook 153 R10543 Unbending angle R14191 SiBE041101 Preparation B Remove the indoor unit from the installation plate Caution When dismounting or mounting the indoor heat exchanger be sure to wear gloves or wrap it with cloth before proceeding You may be injured by the fins Removal Procedure SiBE041101 After unfastening the lower hook lift up the indoor heat exchanger by its right side Remove the indoor heat exchanger Removal Procedure Procedure Indoor heat exchanger
187. saving operation The INTELLIGENT EYE sensor according to the following situations B A person is detected in area 1 B A person is detected in area 2 Use the INTELLIGENT EYE Operation in combination with The air conditioner will go into energy saving mode after the COMFORT AIRFLOW Operation 20 minutes The wind direction may differ from the illustrated direction depending on the actions and movements of the people in the areas 14 Operation Manual 56 Operation Manual B To start operation B To cancel operation Press and select the desired mode Each time the is pressed a different setting option is displayed on the LCD By selecting from the following icons the air conditioner will be in COMFORT AIRFLOW operation combined with INTELLIGENT EYE operation 6 A blank COMFORT INTELLIGENT Combination No Setting AIRFLOW EYE When the flaps horizontal blades are swinging the operating as above will stop movement of them e The INTELLIGENT EYE lamp lights up The lamp will be lit while human movements detected LC JUL JL COMFORT E SENSO ENSOR 19 ZN Press and select blank on the LCD The flaps will adjust the airflow direction upward while cooling and adjust the airflow direction downward while heating page 14 The sensors will detect the movement of people in the sensing ar
188. se to a power transistor and a diode bridge page 247 for detail Service Diagnosis 114 Troubleshooting SiBE041101 4 23 Output Overcurrent Detection Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 115 Ie dc Ut An output overcurrent is detected by checking the current that flows in the inverter DC section A position signal error occurs while the compressor is running B A speed error occurs while the compressor is running B An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is shut down B Reset condition Continuous run for about 11 minutes 50 class 5 minutes without any other error Poor installation condition Closed stop valve Defective power module Wrong internal wiring Abnormal supply voltage Defective outdoor unit PCB Defective compressor Service Diagnosis SiBE041101 Troubleshooting Check No 07 Refer to P 126 Check No 08 Refer to P 126 Check No 13 Refer to P 128 Check No 14 Refer to P 129 Service Diagnosis Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged An output overcurrent signal may result from wrong internal wiring If the wires have been disconnected and reconnected and the system is interrupted by an output o
189. t Casing Color Compressor Motor Out w 8 amp 9 O o Refrigerant X 98 2 m 9x IN L ue m e S m mein PENES Moor Oupa 23 Running Current Rated A 80 28 27 38 88 86 43 41 88 47 45 43 Power Consumption Rated W 57 5757 689 680 680 854 834 834 9220202 PowrFado 783 808 798 803 788 7987 882 8484 6892 80483 Samgcwen 48 G Dien Hx WD mm B0x765x35 880x765x285 Packaged Dimensions HxWxD mm 62x96x34 812x906x384 Win M _ H SL 46 43 47 44 48 44 48 45 DO70565A DO705GGA Note B The data are based on the conditions shown in the table below Piping Length Conversion Formulae kcal h kW x 860 Btu h kW x 3412 Indoor 27 CDB 19 CWB Indoor 20 CDB 5m Outdoor 35 CDB 24 CWB Outdoor 7 CDB 6 CWB cfm m3 min x 35 3 Specifications 8 Specifications SiBE041101 50 Hz 220 230 240 V IndorUnt FTXSA2J2V1B FTXS50J2V1B RXS42J2V1B RXS50J2V1B Outdoor Unit cooing Cooig ul 14500 6899 700 17 100 6899 1800 Running Current Power Consum 5 Rated Min EA 1 210 440 2 230 1 450 400 1 980 1 460 440 1 810 1 530 400 2 000 02 907 900 915 914 8918 976 977 981 9
190. t PCB 84 Troubleshooting SiBE041101 Troubleshooting U Be sure to turn off the power switch before connecting or disconnecting Caution connectors or parts may be damaged Check No 01 rs urn off the power supply Refer to P 123 and rotate the fan by hand Does the fan rotate smoothly Replace the indoor fan motor Turn the power on and start operation Turn off the power supply Note The motor may break when the disconnect the fan motor connector is disconnected motor connector then while remaining power supply Turn off the power supply before connecting the connector also Does the fan rotate turn the power on YE P Check No 01 Check the output of the fan motor connector Is the motor power supply voltage 310 340 VDC generated NO Replace the indoor unit PCB YES Is the motor control voltage 15 VDC generated NO Replace the indoor unit PCB YES Is the rotation YES Replace the indoor fan motor 2 Stop the fan motor cena NO Check No 01 Check the output of the fan motor connector zie reauon NO Replace the indoor 2 pulse generated fan motor and the indoor unit PCB i Replace the indoor NO unit PCB Replace the indoor fan motor Is the rotation pulse generated Replace the indoor unit PCB R12033 85 Service Diagnosis SiBE041101 Troubleshooting 4 5 T
191. t operation off and power off Disconnect the connector S70 Check that the voltage between the pins 4 7 is 320 VDC Check that the control voltage between the pins 3 4 is 15 VDC Check that the rotation command voltage between the pins 2 4 is 0 15 VDC Keep operation off and power off Connect the connector S70 Check whether 2 pulses 0 15 VDC are output at the pins 1 4 when the fan motor is rotated 1 turn by hand When the fuse is melted check the outdoor fan motor for proper function If NG in step 2 Defective PCB Replace the outdoor unit PCB If NG in step 4 Defective Hall Replace the outdoor fan motor If OK in both steps 2 and 4 Replace the outdoor unit PCB PCB Actual rotation pulse output 0 15VDC Rotation command pulse input 0 15VDC 15 VDC 320 VDC R10811 131 Service Diagnosis SiBE041101 Check 5 14 Main Circuit Short Check Check No 29 d Note Check to make sure that the voltage between and of the diode bridge DB1 is approx V before checking B Measure the resistance between the pins of the DB1 as below B lf the resistance is or less than 1 short circuit occurs on the main circuit terminal of the tester in case of digital terminal i terminal of the tester o 2 3 in case of digital terminal several kQ Several MQ R44 RAS RA R41 RA nau uu um ui 12035
192. t the heat pump model or cooling only model B Make the setting as shown in the illustration The factory set is the heat pump side Heat pump model Set the DIP switch to H P e Cooling only model Set the DIP switch to C O H P R12275 4 2 When 2 Units are Installed in 1 Room When 2 indoor units are installed in 1 room 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address Both the indoor unit PCB and the wireless remote controller need alteration 1 2 3 4 Indoor Unit PCB Remove the front grille 2 screws Remove the electrical box 1 screw Remove the shield plate 4 hooks Cut the address setting jumper JA on the control PCB gt gt gt gt ADDRESS CO JA ADDRESS EXIST 1 243 Trial Operation and Field Settings SiBE041101 Field Settings Wireless Remote 1 Remove the cover and take it off Controller 2 Cut the address setting jumper ADDRESS rs EXIST 1 CUT 2 R14190 4 3 Standby Electricity Saving Outline 20 42 Class Only This function turns power supply OFF to the outdoor unit and sets the indoor unit into energy saving mode thus reducing the power consumption of the air conditioner Detail For 20 25 35 class models following procedure is required for turning ON the function 1 Check that the main power supply is turned OFF Turn OFF if it has not been turne
193. t with WEEKLY TIMER Other settings for ON TIMER are based on the settings just before the operation Both WEEKLY TIMER and ON OFF TIMER operation cannot be used at the same time The ON OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active The WEEKLY TIMER will go into standby state and Symm will disappear from the LCD When ON OFF TIMER is up the WEEKLY TIMER will automatically become active Only the time and set temperature with the weekly timer are sent with the Set the weekly timer only after setting the operation mode the fan strength and the fan direction ahead of time Shutting the breaker off power failure and other similar events will render operation of the indoor unit s internal clock inaccurate Reset the clock e The BACK can be used only for the time and temperature settings It cannot be used to go back to the reservation number 26 Operation Manual 68 Operation Manual 69 Copy mode A reservation made once can be copied another day of the week The whole reservation of the selected day of the week will be copied Program 1 Program 2 en 3 ea Monday 25 25 C 27 6 00 8 30 17 30 22 00 copy Program 1 Program 2 3 ici Tuesday 0 MES a Friday 6 00 17 30 22 00 1 Press A 2 Press to confirm the day of the week v to be copied 3 Press COPY to activate copy mode The whole rese
194. tdoordnit e RISCA 9950J2 MV TB set RE S 215 41 jRemovalof Outer Pariels idola HERE 215 4 2 Removal of Outdoor Fan Fan 219 4 3 Removal of Electrical 223 AA Removal ot POB 228 4 5 Removal of Sound Blankets Thermistors 231 4 6 Removal of Four Way ende Peer 233 4 7 Removal of Electronic Expansion 234 4 8 Removal of 235 IV SiBE041101 Part 8 Trial Operation and Field Settings 238 1 Pump Dow 2 deste euo iss 239 2 Forced Cooling Operation necra 240 De ball tesoro EE nhat 242 MM ICI SCMINGS fats TED DL D DEDE 243 41 Model Type 243 4 2 When 2 Units are Installed in 1 2493 4 3 Standby Electricity 0 244 4 4 Facility Setting Jumper and Switch cooling at low outdoor 245 4 5 Jumper and Switch 246 5 Application of Silicon Grease to a Power Transistor and TS AGS sorer HER 247 Part 9
195. tetic e tito t scia nee 94 4 12 Input Overcurrent Detection 95 4 13 Four Way Valve 96 4 14 Discharge Pipe Temperature 98 4 15 High Pressure Control in 100 4 16 Compressor System Sensor Abnormality 101 4 17 Position Sensor Abnormality 103 4 18 DC Voltage Current Sensor Abnormality 20 25 35 42 Class 106 4 19 CT or Related Abnormality 50 107 4 20 Thermistor or Related Abnormality Outdoor 109 4 21 Electrical Box Temperature Hise essere 111 4 22 Radiation Fin Temperature Rise 113 4 23 Output Overcurrent Detection 115 4 24 Refrigerant 117 4 25 Low voltage Detection or Over voltage Detection 120 4 26 Signal Transmission Error on Outdoor Unit PCB 50 Class Only 122 123 5 1 Fan Motor Connector Output Check 123 Table of Contents SiBE041101 5 2 Electronic Expansion Valve 123 5 3 Four Way Valve Performance 124 5 4
196. to make it easy to disconnect 189 Removal Procedure SiBE041101 Procedure Heat up the brazed part of the suction side and disconnect Lift the compressor up and remove it Removal Procedure Outdoor Unit RK X S20 25 35J2V1B Note B Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals the name plate the heat exchanger fin 190 Outdoor Unit 642 2 1 SiBE041101 3 Outdoor Unit RK X S42J2V1B Note Illustrations are for heat pump models as representative 3 1 Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Sep oO 1 Appearance features R12281 2 Remove the panels 1 Remove the 2 screws to remove the top Top panel Bo panel and 8 screws to Go remove the front panel gt y EN eS B The front panel has 4 hooks
197. trol when starting X R2833 Function and Control SiBE041101 Control Specification 3 11 1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power The opening position is set and the pressure equalization is developed 3 11 2 Pressure Equalization Control When the compressor is stopped the pressure equalization control is activated The electronic expansion valve opens and develops the pressure equalization 3 11 3 Opening Limit Outline A maximum and minimum opening of the electronic expansion valve are limited Detal 20 25 35 class Maximum opening pulse 480 450 480 Minimum opening pulse s 9 The electronic expansion valve is fully closed when cooling operation stops and is opened at fixed degree during defrosting 3 11 4 Starting Operation Control The electronic expansion valve opening is controlled when the operation starts and prevents the superheating or liquid compression 3 11 5 High Discharge Pipe Temperature When the compressor is operating if the discharge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 3 11 6 Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condens
198. ubleshooting Service Diagnosis The supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal The pair type and multi type are interconnected Wrong models interconnected Wrong wiring of connecting wires Wrong indoor unit PCB or outdoor unit PCB mounted Defective indoor unit PCB Defective outdoor unit PCB Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged N Caution Check the combination of the indoor and outdoor unit x YES Match the compatible models Are the connection wires connected property NO Correct the connection YES Check the code numbers 2P01234 for example of the indoor and outdoor unit PCB with the Parts List NO Matched compatibly Change for the correct PCB YES Replace the indoor unit PCB or the outdoor unit PCB R11707 88 Troubleshooting SiBE041101 4 8 Outdoor Unit PCB Abnormality 4 8 1 20 25 35 Class Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 89 gt gt The system follows the microprocessor program as specified The system checks to see if the zero cross signal comes in properly The microprocessor program runs out of control The zero cross signal is not detected D
199. utton on the remote controller cancels the function B This function and POWERFUL operation cannot be used at the same time The latest command has the priority Maximum during normal operation Power consumption and current Normal T E E Maximum during ECONO operation ECONO Operation Time R9288 Function and Control SiBE041101 Main Functions 1 10 2 Area INTELLIGENT EYE Operation Outline The following functions can be performed by a motion sensor INTELLIGENT EYE 1 Reduction of the capacity when there is nobody in the room in order to save electricity energy saving operation 2 Dividing the room into plural areas and detecting existence of humans in each area Moving the airflow direction to the area with no human automatically to avoid direct airflow on humans Detail 1 Detection method of INTELLIGENT EYE If the sensor detects the outputs 10 times sec more it judges humans exist Sec sampling 20 msec High Sensor output Low Condition of 10 times or more output Detection signal ON from the sensor OFF If the detection signal ON continues 3 sec or more it judges humans exist Human motion Continue 3 Sec Human detection ON signal 2821 B This sensor detects human motion by receiving infrared rays and displays the pulse wave output B The microcomputer in the indoor unit carries out a sampling every 20 msec
200. vercurrent take the following procedure Check No 07 Check the installation condition Stop valve fully open Fully open the stop valve Turn off the power and turn it on again to start the system See if the same error occurs NO Monitor the supply voltage Error again discharge and suction pressures and other factors for a long term YES Possible causes Instantaneous supply voltage drop Keep on using as it is Compressor overloaded Short circuit Check the connectors and other components Turn off the power and disconnect the harnesses U V and W Check No 14 Inverter checker Check with the inverter checker Part No 1225477 Correct the power supply or replace the PM1 Replace the outdoor unit NO PCB Check No 13 Check the power module NO Replace the PM1 Replace the outdoor unit YES PCB Turn off the power and reconnect the harnesses Turn on the power again and start operation Check the supply voltage NO Voltage as rated Correct the power supply YES Short circuit or YES wire breakage between compressor s coil phases NO Check No 08 Check the discharge pressure Replace the compressor R14175 116 Troubleshooting SiBE041101 4 24 Refrigerant Shortage Remote LI Controller Display Method of Refrigerant shortage detection I Malfunction Refrigerant shortage is detected by c
201. y SiBE041101 Introduction 1 1 2 Cautions Regarding Safety of Users Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity and improper electrical work may cause an electrical shock or fire Be sure to use the specified cable for wiring between the indoor and outdoor units Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections may cause excessive heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or d
202. z ity 60 Hz freq variable ean Refrigerant circulation rate low R2812 Inverter Features The inverter provides the following features B The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load B Quick heating and quick cooling The compressor rotational speed is increased when starting the heating or cooling This enables to reach the set temperature quickly B Even during extreme cold weather the high capacity is achieved It is maintained even when the outdoor temperature is 2 C B Comfortable air conditioning A fine adjustment is integrated to keep the room temperature constant B Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency Frequency O OOOO _ Four way valve operation compensation Refer to page 39 B Compressor protection function Refer to page 39 B Discharge pipe temperature control Refer to page 40 Input current control Refer to page 41 B Freeze up protection control Refer to page 42 B Heating peak cut control Refer to page 42 B Defrost control Refer to page 44 Forced Cooling Refer to page 240 for detail Operation Function and Control 22 Main Functions SiBE041101 1 3 Airflow Direction Control Power Airflow Dual Fl

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