Mitsubishi Electric KA12 Manual de servicio

SERVICE MANUALNo.OCH467REVISED EDITION-ASPLIT-TYPE, HEAT PUMP AIR CONDITIONERSCONTENTS1. COMBINATION OF INDOOR AND OUTDOOR UNITS... 22. PART NAMES AND

10 11ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation

10 117 DATASTANDARD OPERATION DATARepresentative matching SEZ-KD09NA4 SEZ-KD12NA4 SEZ-KD15NA4 SEZ-KD18NA4Item Unit Cooling Heating Cooling Heating Coo

12 13Representative matching SLZ-KA09NA SLZ-KA12NA SLZ-KA15NAItem Unit Cooling Heating Cooling Heating Cooling HeatingTotalCapacity Btu/h 8400 10900 1

12 13SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA SUZ-KA18NA8-2. R.V. COIL CONTROL Heating . . . . . . . . . . . . . . . . .ON Cooling . . . . . . . . . . . .

14 159-1. CHANGE IN DEFROST SETTING Changing defrost finish temperature <JS> To change the defrost finish temperature, cut/solder the JS wire

14 1510-2. FAILURE MODE RECALL FUNCTIONAs this air conditioner has a function to memorize all the failures that had happened, the latest failure detai

161710-2-3. Outdoor unit failure mode tableAbnormal point (Failure mode / protection) LED indication (Outdoor P.C. board) Condition Remedy Indoor/ou

161710-3. TROUBLESHOOTING CHECK TABLENo. Symptom LED indication Abnormal point/ Condition Condition Remedy1Outdoor unit does not oper-ate. 1-time 

181910-4. TROUBLE CRITERION OF MAIN PARTSSUZ-KA09NA SUZ-KA12NA SUZ-KA15NA SUZ-KA18NAPart name Check method and criterion FigureDefrost thermistor

181910-5. TROUBLESHOOTING FLOWAre the voltages balanced?Disconnect the connector (CN61) between compressor and the intelligent power module (IPM).Repl

23Air outletDrain outletPipingDrain hoseAir inlet(back and side)1COMBINATION OF INDOOR AND OUTDOOR UNITSOUTDOOR UNITPipingAir outletDrain hoseDrain ou

2021 F Check of compressor start failure D Check of compressor winding E Check of compressor operation time● Disconnect the connector (CN61) betw

2021Is the resistance of thermistor normal? (Refer to 10-6.1.)Reconnect the connector of thermistor.Turn ON the power supply and press the TEST button

2223 I Check of outdoor fan motorIs the resistance of outdoor fan motor normal?(Refer to 10-4.)Replace the outdoor fan motor.Replace the inverter P.C

2223 J Check of power supplyIs there voltage 208/230 VAC between the indoor terminal block S1 and S2?NoYesReplace the indoor electronic control P.C.

2425K Check of LEV (Expansion valve)Replace the inverter P.C.board.NoSelf-check (Refer to 10-2-1.) start.Expansion valve operates in full-opening dir

2425 L Check of inverter P.C. boardCheck the outdoor fan motor. (Refer to 10-5. .)Is the fuse (F901) blown on the inverter P.C. board?Check the conne

2627 M How to check miswiring and serial signal errorTurn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again

2627 N Electromagnetic noise enters into TV sets or radiosYesIs the unit grounded?NoGround the unit.YesIs the distance between the antennas and the i

2829-4 14 32 50 68 86 1040102030405060708090100Temperature(°F)Defrost thermistor(RT61) Ambient temperature thermistor(RT65)Outdoor heat exchanger temp

2829-4 14 32 50 68 86 1040102030405060708090100Temperature(°F)Defrost thermistor(RT61) Ambient temperature thermistor(RT65)Outdoor heat exchanger temp

23Outdoor unit model SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA SUZ-KA15NAPower supply V , phase , Hz 208/230 , 1 , 60Max. fuse size (time delay) A 15Min. circ

30 3111FUNCTION SETTING11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER (S series only)Each function can be set according to necessity using the r

30 31 Select mode No. 02 (room temperature detection position). Select setting No. 03 (remote controller fixed). (Use  and .) Enter the s

32 33Turn off the remote controller.Hold down 2 buttons simultaneously for 2 seconds: the and  buttons to set the modes 01 through 1

SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA NOTE: Turn OFF power supply before disassembling.OPERATING PROCEDURE PHOTOS1. Removing the cabinet(1) Remove the sc

3435OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disco

3435OPERATING PROCEDUREPHOTOS5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconnect the following conne

11-2. SUZ-KA18NANOTE: Turn OFF power supply before disassembling.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws of the service

OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconnec

3839OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor and

3839

45Unit: inchSUZ-KA09NA SUZ-KA12NA SUZ-KA15NA Liquid pipe :1/4 (flared)Gas pipe :3/8 (flared) (KA09/12) 1/2 (flared) (KA15)6-23/3225-7/82-23/321-3/

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45SUZ-KA09NA SUZ-KA12NA5WIRING DIAGRAMSUZ-KA09NA, SUZ-KA12NA WIRING DIAGRAMLEDLEDH26HIC802IPM,IC932L61DB61,DB65C62,C63SYMBOLNAME SYMBOL SYMBOLNAME NA

67SUZ-KA15NASUZ-KA15NA WIRING DIAGRAMRT68TB1,TB2TR821T80121S4X63,X64,X6626HF701,F801,F901MFRT61RT62MCPTC64,PTC65RT64LEVC61,C62,C63SYMBOL SYMBOL SYMBOL

67SUZ-KA18NART68TR821TB1,TB2X63,X64,X6621S4T801HEATER PROTECTOR(OPTION PARTS)26HDB61,DB65C61,C62,C63SYMBOL NAME SYMBOL NAME SYMBOL NAMEDEFROST HEATER(

8 9Unit: inch (mm)SUZ-KA09NAOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valve(wi

8 9SUZ-KA18NAOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valve(with strainar)Sto