Mitsubishi MSZ-GE71VA Service Manual

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ··································· 32. PART NAMES AND FUNCTIONS ····················· 43. SPECIFICATION ··

10MUZ-GE60VA MUZ-GE71VA417.54042Drain hole17550033050Air inAir out2-holes 10 2136084010981880452Service panel99.5164.51953544Liquid refrigerantpipe

11MUZ-GE25VA MUZ-GE35VAWIRING DIAGRAM6

12MUZ-GE25VAH MUZ-GE35VAH

13MUZ-GE42VA

14MUZ-GE42VAH

15MUZ-GE50VA

16MUZ-GE50VAH

17MUZ-GE60VA MUZ-GE71VA

18Unit: mmMUZ-GE25VA MUZ-GE25VAHOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop val

19MUZ-GE50VA MUZ-GE50VAHOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valve(with

2 Revision A: • MUZ-GE42VA - E1, MUZ-GE42VAH - E1, MUZ-GE50VA - E1 and MUZ-GE50VAH - E1 have been added. Revision B: • MUZ-GE60VA - E1 and MUZ-GE71VA

20Max. Length AMax. HeightdifferenceBIndoorunitOutdoor unitMAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCERefrigerant piping: m P

21The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-tions vary according t

22NOTE: The above broken lines are for the heating operation without any frost and defrost operation.0.80.91.01.11.21.3-10-5 0 5 1015202530354045Outdo

23MUZ-GE25VA MUZ-GE25VAHMUZ-GE35VA MUZ-GE35VAHCorrection of Cooling capacityCapacity correction factorsCorrection of Cooling inputInput correction f

24Correction of Cooling capacityCapacity correction factorsCorrection of Cooling inputInput correction factorsCorrection of Heating capacityCapacity c

25NOTE: The unit of pressure has been changed to MPa on the international system of units (SI unit system)The conversion factor is: 1 (MPa [Gauge]) =

260 5 10 15 20 253.03.54.04.55.05.50 5 10 15 20 256810124.04.55.05.50 5 10 15 20 25Ambient temperature (°C)Outdoor current (A)MUZ-GE60VAMUZ-GE71VA2.12

27PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE25VA MUZ-GE25VAHCAPACITY: 2.5 kW SHF: 0.96 INPUT: 545 WINDOORDB (°C)INDOORWB (°C)OUTDOOR

28PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE25VA MUZ-GE25VAHCAPACITY: 2.5 kW SHF: 0.96 INPUT: 545 WINDOORDB (°C)INDOORWB (°C)OUTDOOR

29PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE35VA MUZ-GE35VAHCAPACITY: 3.5 kW SHF: 0.82 INPUT: 865 WINDOORDB (°C)INDOORWB (°C)OUTDOOR

3MUZ-GE25VA -E1 MUZ-GE25VAH -E1MUZ-GE35VA -E1 MUZ-GE35VAH -E1MUZ-GE42VA -E1 MUZ-GE42VAH -E1MUZ-GE50VA -E1 MUZ-GE50VAH -E1MUZ-GE60VA -E1MUZ-GE71VA -E1

30PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE35VA MUZ-GE35VAHCAPACITY: 3.5 kW SHF: 0.82 INPUT: 865 WINDOORDB (°C)INDOORWB (°C)OUTDOOR

31PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE42VA MUZ-GE42VAHCAPACITY: 4.2 kW SHF: 0.77 INPUT: 1215 WINDOORDB (°C)INDOORWB (°C)OUTDOO

32PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE42VA MUZ-GE42VAHCAPACITY: 4.2 kW SHF: 0.77 INPUT: 1215 WINDOORDB (°C)INDOORWB (°C)OUTDOO

33PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE50VA MUZ-GE50VAHCAPACITY: 5.0 kW SHF: 0.76 INPUT: 1515 WINDOORDB (°C)INDOORWB (°C)OUTDOO

34PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE50VA MUZ-GE50VAHCAPACITY: 5.0 kW SHF: 0.76 INPUT: 1515 WINDOORDB (°C)INDOORWB (°C)OUTDOO

35PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE60VACAPACITY: 6.0 kW SHF: 0.79 INPUT: 1760 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21

36PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE60VACAPACITY: 6.0 kW SHF: 0.79 INPUT: 1760 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35

37PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE71VACAPACITY: 7.1 kW SHF: 0.78 INPUT: 2130 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21

38PERFORMANCE DATA COOL operation at Rated frequencyMUZ-GE71VACAPACITY: 7.1 kW SHF: 0.78 INPUT: 2130 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35

39PERFORMANCE DATA HEAT operation at Rated frequencyMUZ-GE25VA MUZ-GE25VAHCAPACITY: 3.2 kW INPUT: 700 WINDOORDB (°C)OUTDOOR WB (°C)-10 -5 0 5 10 15

4Air outletDrain outletPipingDrain hoseAir inlet(back and side)MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAHMUZ-GE50VA MU

40MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAHMUZ-GE50VA MUZ-GE50VAH MUZ-GE60VA MUZ-GE71VA9-2. R.V. COIL CONTROLHeatin

4110-1. CHANGE IN DEFROST SETTING Changing defrost finish temperature <JS> To change the defrost finish temperature, cut/solder the JS wire of

42Outline of the functionThis air conditioner can memorize the abnormal condition which has occurred once.Even though LED indication listed on the tro

43 2. Flow chart of the detailed outdoor unit failure mode recall function 2.Blinking pattern when outdoor unit is abnormal:ONOFFNo beepBeepsRepe

443. Outdoor unit failure mode tableThe upper lamp of OPERATION INDICATOR lamp(Indoor unit) Abnormal point (Failure mode / protection) LED indication(

4511-3. TROUBLESHOOTING CHECK TABLENo. Symptom LED indication Abnormal point/ Condition Condition Correspondence 1Outdoor unit does not op-erate. 1-t

4611-4. TROUBLE CRITERION OF MAIN PARTSMUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAHMUZ-GE50VA MUZ-GE50VAH MUZ-GE60VA M

4711-5. TROUBLESHOOTING FLOWAre the voltages balanced?Disconnect the connector between compressor and the intelligent power module (IPM).Replace the i

48 F Check of compressor start failure D Check of compressor winding E Check of compressor operation time●Disconnect the connector between the comp

49 G Check of outdoor thermistors H Check of R.V. coilThermistor Symbol Connector, Pin No. Board Defrost RT61 Between CN641 pin1 and pin2 Inverte

5Outdoor model MUZ-GE25VAMUZ-GE25VAHMUZ-GE35VAMUZ-GE35VAHMUZ-GE42VAMUZ-GE42VAHMUZ-GE50VAMUZ-GE50VAHMUZ-GE60VAMUZ-GE71VAPower supply Single phase, 230

50 I Check of outdoor fan motorIs the resistance of outdoor fan motor normal?(Refer to 11-4.)Replace the outdoor fan motor.Replace the inverter P.C.

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

52Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor

53Check the outdoor fan motor. (Refer to 11-5. .)Is the fuse (F901) blown on the in-verter P.C. board?Check the connection of the connectors (CN931 ,

54 M How to check miswiring and serial signal errorMUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAHMUZ-GE50VA MUZ-GE50VAHTu

55Turn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again.Press EMERGENCY OPERATION switch.•••AIs serial sign

56 N Electromagnetic noise enters into TV sets or radiosYesIs the unit earthed?NoEarth the unit.YesIs the distance between the antennas and the indoo

57 O Check of defrost heaterCheck the following points before checking electric continuity.1. Does the resistance of ambient temperature thermistor h

58-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Ambient temperature thermistor(RT65)Outdoor heat exchanger temper

59-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Ambient temperature thermistor(RT65)Outdoor heat exchanger temper

6Specifi cations and rating conditions of main electric partsModel Item MUZ-GE25VAMUZ-GE25VAHMUZ-GE35VAMUZ-GE35VAHMUZ-GE42VAMUZ-GE42VAHMUZ-GE50VAMUZ-GE

60MUZ-GE60VA MUZ-GE71VA-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Ambient temperature thermistor(RT65)Outdoor

6112-1. MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAHNOTE: Turn OFF power supply before disassembling.OPERATING PROCEDURE

62OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the le

63OPERATING PROCEDUREPHOTOS5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the following connectors: <

6412-2. MUZ-GE50VA MUZ-GE50VAHNOTE: Turn OFF power supply before disassembling.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws

65OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the le

66OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor and a

6712-3. MUZ-GE60VA MUZ-GE71VANOTE: Turn OFF power supply before disassembling.OPERATING PROCEDUREPHOTOS1. Removing the cabinet(1) Remove the screws

68OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the le

69OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger tempera-ture thermistor and a

790807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BARBAND CENTE

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN© Copyright 2008 MITSUBISHI ELECTRIC CO.,LTDDistributed in Jun. 2010. No

8MUZ-GE60VA MUZ-GE71VATest conditions Cooling: Dry-bulb temperature 35°C Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°COUTDOOR UNI

9Unit: mmMUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAHMUZ-GE42VA MUZ-GE42VAH1069800302.5500 Bolt pitch for installation15022.3Handle550280164.599.