Mitsubishi MSZ-GA60VA Service Manual

Browse online or download Service Manual for Split-system air conditioners Mitsubishi MSZ-GA60VA. Mitsubishi MSZ-GA60VA Service manual User Manual

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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES······························13
9. ACTUATOR CONTROL····································24
10. TROUBLESHOOTING······································25
11. DISASSEMBLY INSTRUCTIONS·····················44
12. PARTS LIST······················································48
Wireless type
Models
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUZ-GA50VA -
MUZ-GA60VA -
MUZ-GA71VA -
E1
E1
E1
MUZ-GA50VA -
MUZ-GA60VA -
MUZ-GA71VA -
E1
E1
E1
Indication of
model name
HFC
utilized
R410A
No. OB389
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-GA50VA - , MSZ-GA60VA - and MSZ-GA71VA - , refer to
the service manual OB388.
E1E1E1
OB389 --1qxp 05.1.26 18:14 Page 1
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Summary of Contents

Page 1 - MUZ-GA71VA

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS······················53. SPECIFICATION····

Page 2 - TECHNICAL CHANGES

10MUZ-GA71VA -E1BLKCN90212CN90312TAB4X64 3R64A R64BRED2314LYLWYLWRED230V~12-24VCN912CN663WHTBLUNOISEFILTERP.C.BOARDBRNTO INDOORUNITCONNECTINGREDS3RT65

Page 3

11REFRIGERANT SYSTEM DIAGRAM7MUZ-GA50VA -MUZ-GA60VA -E1E1OUTDOOR UNITUnit:mmOutdoorheatexchangerFlared connectionDefrostthermistorRT61Dischargetempera

Page 4 - 5.Additional charge

12Refrigerant PipingMax. length Aw Height difference should be within 15m regardless of which unit, indoor or outdoor position is high.w Ma

Page 5 - SPECIFICATION

13PERFORMANCE CURVES8The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.Si

Page 6 - OUTDOOR UNIT

14MUZ-GA71VA -E1MUZ-GA71VA -E1MUZ-GA71VA -E1MUZ-GA71VA -E1Capacity correction factorsInput correction factorsInput correction factorsCapacity corr

Page 7 - NOISE CRITERIA CURVES

15<How to operate fixed-frequency operation (Test run operation)> 1. Press EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, H

Page 8 - OUTLINES AND DIMENSIONS

16HEAT operationCondition indoor: Dry bulb temperature 20.0°CWet bulb temperature 14.5°CCondition outdoor: Dry bulb temperature 2,7,15,20.0°CWet bulb

Page 9 - WIRING DIAGRAM

17MSZ-GA50VA - : MUZ-GA50VA -E1E121 18 5.88 3.23 0.55 1168 5.63 3.09 0.55 1226 5.40 2.97 0.55 1285 5.20 2.86 0.55 134321 20 6.13 2.63 0.43 1226 5.88 2

Page 10

1821 18 4.90 2.70 0.55 1431 4.50 2.48 0.55 1518 4.33 2.38 0.55 154821 20 5.15 2.21 0.43 1489 4.80 2.06 0.43 1562 4.63 1.99 0.43 160622 18 4.90 2.89 0.

Page 11 - REFRIGERANT SYSTEM DIAGRAM

1921 18 7.05 4.30 0.61 1544 6.75 4.12 0.61 1621 6.48 3.95 0.61 1698 6.24 3.81 0.61 177621 20 7.35 3.60 0.49 1621 7.05 3.45 0.49 1718 6.84 3.35 0.49 17

Page 12 - MAX. HEIGHT DIFFERENCE

21TECHNICAL CHANGESRefrigerationoilRefrigerantNew refrigerantR410AHFC-32: HFC-125 (50%:50%)Pseudo-azeotropic refrigerantNot includedA1/A172.6-51.41.55

Page 13 - PERFORMANCE CURVES8

2021 18 5.88 3.59 0.61 1891 5.40 3.29 0.61 2007 5.19 3.17 0.61 204621 20 6.18 3.03 0.49 1969 5.76 2.82 0.49 2065 5.55 2.72 0.49 212322 18 5.88 3.82 0.

Page 14

2121 18 8.34 4.42 0.53 1936 7.99 4.23 0.53 2033 7.67 4.06 0.53 2130 7.38 3.91 0.53 222621 20 8.70 3.57 0.41 2033 8.34 3.42 0.41 2154 8.09 3.32 0.41 22

Page 15 - COOL operation

2221 18 6.96 3.69 0.53 2372 6.39 3.39 0.53 2517 6.14 3.25 0.53 256521 20 7.31 3.00 0.41 2468 6.82 2.79 0.41 2589 6.57 2.69 0.41 266222 18 6.96 3.97 0.

Page 16 - HEAT operation

23PERFORMANCE DATA HEAT operationCAPACITY:5.9(kW)INPUT:1630(W)OUTDOOR WB(:)INDOOR-10 -5 0 5 10 15 20DB(:)Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q

Page 17 - MSZ-GA50VA - : MUZ-GA50VA

249ACTUATOR CONTROLMUZ-GA50VA -MUZ-GA60VA -MUZ-GA71VA -E1E1E1Relation between main sensor and actuator.9-3. Relation between main sensor and actuator9

Page 18

25TROUBLESHOOTING103. Troubleshooting procedure1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate a

Page 19 - MSZ-GA60VA - : MUZ-GA60VA

26Outline of the functionThis air conditioner can memorize the abnormal condition which has occurred once.Even though LED indication listed on the tro

Page 20 - MSZ-GA60VA - : MUZ-G60VA

272. Flow chart of the detailed outdoor unit failure mode recall functionOperational procedureNote 1. Make sure to release the failure mode recall fun

Page 21 - MSZ-GA71VA - : MUZ-GA71VA

283. Failure mode tableLED1 LED2OFF Normal2-time flash Outdoor power system Outdoor power system Lighting Lighting When IPM protection stop or lockpro

Page 22

29LED1 LED2OFF Normal11-time flashConverter Communication errorbetween P.C. boardsLighting 6 times When the communication betweenboards protection sto

Page 23

3-30 -20 -10 0 10 203040 50 60-0.50.00.51.01.52.02.53.03.54.0(MPa [Gauge])R410AR22Conversion chart of refrigerant temperature and pressureSaturated li

Page 24 - ACTUATOR CONTROL

30StartIndoor unit operates.Outdoor unit doesn't operate.Indoor unit doesn't receive the signal from remote controller.OPERATION INDICATORl

Page 25 - TROUBLESHOOTING

3110-4. Troubleshooting check table LED1(Red) LED2(Yellow)Lightning Twice Outdoor power system• Check the connection of the compressor connecting wir

Page 26 - Operational procedure

32LED1 LED2Primary current protectionSecondary current protectionHigh-pressure protectionDefrosting in cooling3 times LightingDischarge temperaturepro

Page 27

33Part name Check method and criterionMeasure the resistance using a tester.(Part temperature : -10°C ~ 40°C)Defrost thermistor/ Ambient temperature t

Page 28

34AACheck of power supplyOutdoor unit does not operate. (LED display: display OFF)Turn on power supply.NoYesYesNoNoYesNoYesYesNoReplace the power boar

Page 29

35BBHow to check mis-wiring and serial signal error (when outdoor unit does not work)• When unit cannot operate neither by the remote controller nor b

Page 30

36CCCheck of R.V. coilNoYesNoYesNoYesNoYesNoYesStart1. Disconnect the lead wire leading to the compressor.2. 3 minutes after turning on the power supp

Page 31 - Lighting

37EEHow to check inverter/ compressorWhen OPERATION INDICATOR lamp flashes 5-time.• When heating, room does not get warm.• When cooling, room does not

Page 32

38FFCheck of outdoor thermistors• When OPERATION INDICATOR lamp flashes 6-time.• When thermistor is abnormal. (When the LED display is a table below.)

Page 33

39HHCheck of HPSInfinity0"YesNoStart1. Disconnect the connector CN681 in the electronic control P.C. board.2. Check the resistance of HPS after 1

Page 34 - Check of power supply

4Electronic scale for refrigerant chargingOutdoor unitRefrigerant gas cylinderoperating valveRefrigerant gas cylinderfor R410A with siphonRefrigerant

Page 35 - Indoor unit does not operate

40Electromagnetic noise enters into TV sets or radiosIReplace the antennas.Replace the coaxial cable.NoNoNoYesYesNoNoYesYesYesIs the distance between

Page 36 - Check of R.V. coil

4110-7. Test point diagram and voltage1. Outdoor electronic control P.C. boardMUZ-GA50VA - MUZ-GA60VA - MUZ-GA71VA -E1E1E1LED 1LED 2CN801325V DC~370V

Page 37 - Check of LEV

42{CN912R.V. coil 230V AC230V AC50HzInput230V AC50Hz Output{{CN901To electroniccontrol P.C. boardMUZ-GA50VA -MUZ-GA60VA -MUZ-GA71VA -E1E1E1F64 FUSE2A/

Page 38 - Check of outdoor fan motor

4313325-370V DCOutput(Red)(White)Connect to the compressorVoltage among phases: 5V to 180VConnect tothe earthCN5Primary current detection(Connect to t

Page 39 - Check of HPS

4411DISASSEMBLY INSTRUCTIONS(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the loc

Page 40

45OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. boardand power board (1) Remove the top panel, cabinet and service panel.(

Page 41 - Temperature (;)

465. Removing outdoor fan motor(1) Remove the top panel, cabinet and service panel. (Refer to 1.)(2) Remove the back panel. (Refer to 1.)(3) Remove th

Page 42

47OPERATING PROCEDUREPHOTOSPhoto 8Welded parts of 4-way valve6. Removing the compressor and 4-way valve(1) Remove the top panel, cabinet and service p

Page 43

48419911310 122567816142022232425293031312PARTS LISTMUZ-GA50VA - MUZ-GA60VA - MUZ-GA71VA -12-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FU

Page 44 - DISASSEMBLY INSTRUCTIONS

49MUZ-GA50VA - MUZ-GA60VA - MUZ-GA71VA -12-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE1E1E1Symbolin WiringDiagramQ't

Page 45 - OPERATING PROCEDURE

5PART NAMES AND FUNCTIONS2OUTDOOR UNITAir inletPipingAir outlet(back and side)Drain hoseDrain outletACCESSORIES12Drain socketDrain cap [33 12MUZ-GA50V

Page 46

50MUZ-GA50VA -MUZ-GA60VA -MUZ-GA71VA -12-2. ACCESSORYE1E1E1Symbolin WiringDiagramQ'ty/unitRemarksPart No.No.Part NameMUZ-GA50 VA -E1MUZ-GA60 VA

Page 47

51OB389 --2qxp 05.1.26 18:15 Page 51

Page 48 - PARTS LIST

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPANCCCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistri

Page 49 - FUNCTIONAL PARTS

6OUTDOOR UNITModelItemSmoothing capacitorCurrent transformer Current transformerFuse Fuse Fuse

Page 50 - 12-2. ACCESSORY

7NOISE CRITERIA CURVES4COOLINGFUNCTIONSPL(dB(A)) LINEHighFAN SPEEDHEATING535590807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30N

Page 51

85OUTLINES AND DIMENSIONSUnit: mmOUTDOOR UNITMUZ-GA50VA -MUZ-GA60VA -MUZ-GA71VA -E1E1E130-35-155901984051529966345133036085043050080121840Open as a ru

Page 52

9WIRING DIAGRAM6MUZ-GA50VA -MUZ-GA60VA -E1E1R64BYLW230V~12-24VCN912CN663WHTBLUNOISEFILTERP.C.BOARDBRNTO INDOORUNITCONNECTINGREDS3RT6521CN6113GRN/YLW5P

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