Mitsubishi Electric SUZ-KA71VA4 Manual de servicio

TECHNICAL & SERVICE MANUALNo.OCH545SPLIT-TYPE, HEAT PUMP AIR CONDITIONERSR410AOutdoor unit[Model Name] [Service Ref.]SUZ-KA25VA4 SUZ-KA25VA4.THSU

10NOISE CRITERIA CURVES5OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BARCOOLINGFUNCTIONSPL(dB(A))LINEHighMed.FAN SPEEDHEATING47489080706050403

116OUTLINES AND DIMENSIONS1069800302.5500 Bolt pitch for installation15022.3Handle550280164.599.5170.523Service panelService port285344.544400Air inAi

12417.54042Drain hole17550033050Air inAir out2-Oval holes 10 2184010981880452Service panel99.5164.51953544Liquid refrigerantpipe jointRefrigerant pi

13137WIRING DIAGRAMSUZ-KA25VA4.THSUZ-KA35VA4.THOCH545

14SUZ-KA50VA4.THOCH545

15SUZ-KA60VA4.THSUZ-KA71VA4.THOCH545

16REFRIGERANT SYSTEM DIAGRAM8Unit: mmSUZ-KA25VA4.THUnit: mmSUZ-KA35VA4.THFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flare

1717Unit: mmSUZ-KA50VA4.THOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valveStop

18ADDITIONAL REFRIGERANT CHARGE (R410A: g)SUZ-KA25VA4.TH SUZ-KA35VA4.TH SUZ-KA50VA4.THSUZ-KA60VA4.TH SUZ-KA71VA4.THMAX. REFRIGERANT PIP

1919ACTUATOR CONTROL9SUZ-KA25VA4.TH SUZ-KA35VA4.TH SUZ-KA50VA4.TH SUZ-KA60VA4.TH SUZ-KA71VA4.TH9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR9-2. R

21COMBINATION OF INDOOR AND OUTDOOR UNITSHeat pump typeOutdoor unitSUZ- SLZ-KA25VAL2.THSLZ-KA35VALR3.THSLZ-KA50VALR3.THSLZ-KA25VAQ2.THSLZ-KA35VAQR2.TH

20SUZ-KA25VA4.TH SUZ-KA35VA4.TH SUZ-KA50VA4.TH SUZ-KA60VA4.TH SUZ-KA71VA4.THCHANGE IN DEFROST SETTINGChanging defrost finish temperature<JS> To

2121SUZ-KA25VA4.TH SUZ-KA35VA4.TH SUZ-KA50VA4.TH SUZ-KA60VA4.TH SUZ-KA71VA4.TH temperature thermistor, outdoor heat exchanger temperature No.

22F1 F2 F3 F4unem ecivreSrosruC:unem niaMTest runInput maintenance info.Function settingCheckSelf checkkcehc fleS:tceleSRef. addresssserddAkcehc fleSR

23If operations cannot be completed with the remote controller, diagnose the remote controller with this function.F1 F2 F3 F4unem ecivreSrosruC:unem n

24When a problem occurs to the air conditioner, the indoor and outdoor units will stop,and the problem is shown in the remote controller display.[CHE

25Transmission data from remote controllerTransmission data on transmission pathWhen the number of data errors is "02":Press the ON/OFF butt

26• "CHECK" lights, and refrigerant address "00" flashes.• Check that the remote controller's display has stopped before cont

27[Output pattern A] Errors detected by indoor unit[Output pattern B]E91. If the beeper does not sound again after the initial 2 beeps to confirm the

2811-4. TROUBLE CRITERION OF MAIN PARTS Parts nameFigureCheck method and criterionOutdoor fan motor R.V. coil (21S4) Expansion valve coil(LEV)Measure

29 A How to check inverter/compressorAre the voltages balanced?Disconnect the connector between the compressor and the intelligent power module (KA25

32TECHNICAL CHANGESRefrigerantoilRefrigerantNew refrigerantR410AHFC-32: HFC-125 (50%:50%)Pseudo-azeotropic refrigerantNot includedA1/A172.6-51.41.5576

30 D Check of compressor winding Disconnect the connector between the compressor and intelligent power module, and measure the resistance between the

31 G Check of R.V. coilFirst of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 11-4.In case CN721(KA25/35/50)/C

32 I Check of LEV Turn on power supply to the outdoor unit after checking LEV coil is fi xed to the LEV body securely.YesDisconnect the connector CN7

33 Electromagnetic noise enters into TV sets or radiosYesIs the unit earthed?NoEarth the unit.YesIs the distance between the antennas and the indo

3411-6. TEST POINT DIAGRAM AND VOLTAGE11-6-1. Inverter P.C. boardSUZ-KA25VA4.TH SUZ-KA35VA4.TH SUZ-KA50VA4.TH-20 -10 0 10 20 30 400102030405060708090

3511-6-2. Inverter P.C. boardSUZ-KA60VA4.TH SUZ-KA71VA4.TH-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Ambient t

3612DISASSEMBLY INSTRUCTIONS(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the lo

3737OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disco

38OPERATING PROCEDUREPHOTOS5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconnect the following connect

39SUZ-KA50VA4.THNOTE: Turn OFF power supply before disassembly.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws of the service pa

4R410A tools Can R22 tools be used?Gas leak detectorR410A has high pressures beyond the measurement range of existing gauges. Port diameters have been

40OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconn

41OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor and a

42NOTE: Turn OFF power supply before disassembling.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws of the service panel.(2) Remo

43OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to procedure 1.)(2) Disconn

44OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor and a

45OCH545

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN Copyright 2013 MITSUBISHI ELECTRIC CORPORATIONDistributed in Aug. 2013

5Electronic scale for refrigerant chargingOutdoor unitRefrigerant gas cylinderoperating valveRefrigerant gas cylinderfor R410A with siphonRefrigerant

66. Pumping DownWhen relocating or disposing of the air conditioner, pump down the system by following the procedure below so that no refrigerant is r

773PARTS NAMES AND FUNCTIONSSUZ-KA25VA4.TH SUZ-KA35VA4.THSUZ-KA50VA4.THSUZ-KA60VA4.THSUZ-KA71VA4.THAir outletDrain outletPipingDrain hoseAir inlet(b

8SPECIFICATION4NOTE: Test conditions are based on ISO 5151 Cooling : Indoor D.B. 27°C W.B. 19°C Outdoor D.B. 35°C Heating : Indoor D.B. 20°C

99SUZ-KA25VA4.TH SUZ-KA35VA4.THSUZ-KA50VA4.TH SUZ-KA60VA4.THSUZ-KA71VA4.THSpecifications and rating conditions of main electric partsModelItemSUZ-KA25