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Mitsubishi Electric MUZ-GA25VA-E1, Service Manual

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Mitsubishi Electric MUZ-GA25VA-E1 Service Manual Download Page 32

32

11-5. Trouble criterion of main parts

Part name

Figure

Check method and criterion

Outdoor fan motor(MF)
INNER FUSE 
(Only MUZ-GA25VA/H)
152

i

    

:

 CUT OFF

0
5

R.V. coil(21S4)

Expansion valve coil(LEV)
MUZ-GA35VA
MUZ-GA35VAH

Measure the resistance between the terminals with a tester.
(Part temperature  –20˚C ~ 40˚C)

WHT – BLK

BLK – RED

RED – WHT

Abnormal

Open or

short-circuit

Normal

Measure the resistance between the terminals with a tester.
(Part temperature  –20˚C ~ 40˚C)

Normal

1.26 k

"

 ~ 1.62 k

"

1.20 k

"

 ~ 1.55 k

"

WHT – RED
RED – ORN

YLW – BRN

BRN – BLU

Abnormal

Open or

short-circuit

Abnormal

Open or

short-circuit

Normal

38 

"

 ~ 50 

"

Measure the resistance with a tester.
(Part temperature :  –20˚C ~ 40˚C)

Measure the resistance with a tester. (Part temperature –10˚C ~ 40˚C)

Color of the lead wire

Color of the lead wire

Discharge temperature
thermistor(RT62)

Measure the resistance with a tester. 
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)

Normal

150 k

"

 ~ 600 k

"

30 k

"

 ~ 180 k

"

Abnormal

Open or short-circuit 

Normal

5 k

"

 ~ 55 k

"

Abnormal

Open or short-circuit

Defrost thermistor
(RT61)

Fin temperature
thermistor(RT64)

Measure the resistance with a tester. 
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)

Normal

Abnormal

Open or short-circuit 

Ambient temperature
thermistor(RT65)

292 

"

 ~ 374 

"

236 

"

 ~ 304 

"

31 

"

 ~ 41 

"

31 

"

 ~ 41 

"

31 

"

 ~ 41 

"

Measure the resistance between the terminals with a tester. 

(Part temperature –20˚C ~ 40˚C)

Compressor(MC)

Defrost heater(H)

Measure the resistance with a tester. 
(Part temperature -20˚C ~ 40˚C)

Normal

333 

"

 ~ 428 

"

Abnormal

Open or short-circuit 

Normal

1,220 

"

 ~ 1,580 

"

Abnormal

Open or short-circuit 

Measure the resistance with a tester. 
(Part temperature -20˚C ~ 40˚C)

MUZ-GA25VA
MUZ-GA25VAH

U-V

U-W

V-W

Abnormal

Open or

short-circuit 

Normal

1.28 

"

 ~ 1.66 

"

1.58 

"

 ~ 2.03

"

MUZ-GA35VA
MUZ-GA35VAH

MUZ-GA25VA
MUZ-GA25VAH

MUZ-GA35VA
MUZ-GA35VAH

MUZ-GA25VA
MUZ-GA25VAH

MUZ-GA35VA
MUZ-GA35VAH

MUZ-GA25VA
MUZ-GA25VAH

2

3

W

U

V

1

WHT

RED BLK

2

3

W

U

V

1

WHT

RED BLK

WHT

RED

BLK

FUSE

Solenoid valve coil
(21R1)
MUZ-GA25VA
MUZ-GA25VAH

MUZ-GA35VA
MUZ-GA35VAH

LEV

WHT

6

RED

1

ORN

4

YL

W

5

BRN

2

BLU

3

MUZ-GA25VA -

MUZ-GA35VA -

MUZ-GA25VAH  -

MUZ-GA35VAH  -

E1

E1

E1

E1

OB379 --2qxp  05.1.17 16:38  Page 32

Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy

www.ilmalämpöpumput.com

Summary of Contents for MUZ-GA25VA-E1

Page 1: ...NS 45 13 PARTS LIST 48 Wireless type Models No OB379 SPLIT TYPE HEAT PUMP AIR CONDITIONERS MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 E1 E1 E1 MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 E1 E1 E1 Indication of model name NOTE This service manual describes technical data of the outdoor units As for indoor units MSZ GA22VA MSZ GA25VA and MSZ GA35VA refer to the service manual OB378 E1 E1 ...

Page 2: ...anged 10 Shape of service panel has been changed 11 Shape of propeller has been changed 12 Quick Clean Kit has been added 13 Symbol on terminal block has been changed to S1 S2 S3 1 Indication of capacity has been changed BTU base kW base 2 Control method between indoor and outdoor unit has been changed 3 Power supply method has been changed change to supply from outdoor unit 4 Terminal block for p...

Page 3: ...erials are required Refer to the table below 2 Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 3 For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to 2 Refrigerant piping 4 Composition change may occur in R410A s...

Page 4: ...high pressure and high speed vaporization No No No Yes Yes New New New Gauge manifold Charge hose Torque wrench Flare tool Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging No Not Substitutable for R410A Yes Substitutable for R410A No 12 7 mm 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant Some R22 tool...

Page 5: ...urfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant from liquid phase of the gas cylinder If the ref...

Page 6: ...SSORIES 1 Drain socket 1 2 Quick clean kit 1 MUZ GA25VA E1 MUZ GA35VA E1 1 MUZ GA25VAH E1 MUZ GA35VAH E1 MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 E1 E1 E1 PART NAMES AND FUNCTIONS 2 Mitsubishi ilmalämpöpumput huoltaa ja korjaa Jäähdytinpalvelu RefGroup Oy www ilmalämpöpumput com ...

Page 7: ... at 20 Model Winding resistance at 20 Dimensions WOHOD Weight Sound level 1 Fan speed HighW LowW HighW Med W LowW Fan speed regulator Refrigerant filling capacity R410A Refrigeration oil Model Thermistor RT61 at 0 Thermistor RT62 at 100 Thermistor RT64 at 50 Thermistor RT65 at 25 kW r h K h A A A 1 W mm kg dB A rpm kg cc k k k k Compressor Fan motor Special remarks Coefficient of performance C O P...

Page 8: ...VA E1 CT CT761 CT781 C63A C63B C63C DB61 DB65 F61 F71 F801 H IPM LEV L61 R61 R831 R64A R64B TB1 TB2 X63 X64 X66 X69 21S4 SR61 21R1 26H MUZ GA25VAH E1 MUZ GA35VA E1 MUZ GA35VAH E1 ETA19Z59BZ ETQ19Z71AY 620 420V D25XB60 250V 20A 250V 3 15A PS21244 A 203 10A 23 0mH 25m 5W 10 5W 3P G5NB 1a G4A 1A PS 230V 130W G5NB 1a Open 45 230V 130W G5NB 1a Open 45 45m 5W 1 element CAM MD12ME 12VDC STF 01AJ503 G5NB ...

Page 9: ...temperature 6 MUZ GA25VA MUZ GA25VAH E1 E1 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOLING FUNCTION SPL dB A LINE FAN SPEED HEATING 47 48 Test conditions Cooling Dry bulb temperature 35 Wet bulb temperatur...

Page 10: ...t pipe joint Refrigerant pipe flared 9 52 4 3 3 5 2 holes 10X21 Drain hole 33 MUZ GA25 GA35VAH REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit 350mm or more 200mm or more 100mm or more 100mm or more Open two sides of left right or rear side Drain hole 42 MUZ GA25 GA35VA Unit mm OUTDOOR UNIT MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 ...

Page 11: ...OID VALVE COIL NOTE 1 About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing 2 Use copper conductors only For field wiring 3 Symbols below indicate Terminal block Connector MODEL WIRING DIAGRAM MUZ GA25VA E1 PE CIRCUIT BREAKER N 230V 50Hz POWER SUPPLY 230V 12 24V TO INDDOR UNIT CONNECTING WHT R64B WHT BLU RED S2 S1 S3 TB2 R64A L N GRN YLW TB1 RED WHITE...

Page 12: ...ROTECTOR NOTE 1 About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing 2 Use copper conductors only For field wiring 3 Symbols below indicate Terminal block Connector MODEL WIRING DIAGRAM PE CIRCUIT BREAKER N 230V 50Hz POWER SUPPLY 230V 12 24V TO INDDOR UNIT CONNECTING RED BLU WHITE GRN YLW TB1 L N R64A TB2 S3 S1 S2 RED BLU WHT R64B WHT H 26H CT 3 4 NR...

Page 13: ...ric wiring refer to the indoor unit electric wiring diagram for servicing 2 Use copper conductors only For field wiring 3 Symbols below indicate Terminal block Connector MODEL WIRING DIAGRAM MUZ GA35VA E1 N 230V 230V 50Hz CIRCUIT BREAKER PE RED BLU WHITE GRN YLW TB1 POWER SUPPLY L N R64A TB2 S3 S1 TO INDDOR UNIT CONNECTING S2 RED BLU WHT R64B WHT NR63 LDE GRN 4 6 2 1 2 3 1 CN601 4 5 3 1 2 4 5 3 2 ...

Page 14: ...ctric wiring refer to the indoor unit electric wiring diagram for servicing 2 Use copper conductors only For field wiring 3 Symbols below indicate Terminal block Connector MODEL WIRING DIAGRAM PE CIRCUIT BREAKER N 230V 50Hz POWER SUPPLY 230V TO INDDOR UNIT CONNECTING RED BLU WHITE GRN YLW TB1 L N R64A TB2 S3 S1 S2 RED BLU WHT R64B WHT H 26H CT 4 3 NR64 NR63 GRN DSA61 LDE 2 3 1 4 5 CN601 LDY GRN MF...

Page 15: ...00 Solenoid valve Ambient temperature thermistor RT65 MUZ GA25VA MUZ GA25VAH E1 E1 OUTDOOR UNIT Unit mm Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperatuer thermistor RT62 Flared connection Stop valve with strainar Stop valve with service port Capillary tube 3 0 2 0 240 Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating Refrigerant pip...

Page 16: ...Refrigerant Piping Max length A w Height difference should be within 12m regardless of which unit indoor or outdoor position is high w Max Height difference 12m Indoor unit Outdoor unit MAX HEIGHT DIFFERENCE MAX REFRIGERANT PIPING LENGTH Refrigerant piping Max length m A 20 Indoor unit Gas 0 43 Liquid 0 5 Gas 9 52 Liquid 6 35 Outdoor unit Piping size O D mm Length of connecting pipe m Model MUZ GA...

Page 17: ...b thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high 2 Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air intake Cover the thermometers to prevent direct rays of the sun 3 Check that the air filter is cleaned 4 Ope...

Page 18: ... compressor Correction of Heating capacity Capacity correction factors The operational frequency of compressor Correction of Heating total input Input correction factors The operational frequency of compressor Correction of Heating capacity Capacity correction factors The operational frequency of compressor Input correction factors MUZ GA25VA MUZ GA25VAH E1 E1 MUZ GA25VA MUZ GA25VAH E1 E1 MUZ GA25...

Page 19: ...r unit current A MUZ GA25VA MUZ GA25VAH E1 E1 2 4 6 8 10 12 14 MUZ GA35VA MUZ GA35VAH E1 E1 E1 E1 MUZ GA35VA MUZ GA35VAH E1 E1 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation 1 Both indoor and outdoor unit are under the same temperature humidity condition Dry bulb temperature Relative humidity 20 50 25 60 30 70 HEAT operation Condition indoor Dry bulb temperature 20 0 C Wet bulb tempe...

Page 20: ...563 2 60 2 31 0 89 589 28 20 3 06 2 36 0 77 538 2 94 2 26 0 77 570 2 85 2 19 0 77 582 2 75 2 12 0 77 608 28 22 3 19 2 07 0 65 557 3 08 2 00 0 65 592 3 00 1 95 0 65 608 2 88 1 87 0 65 634 28 24 3 35 1 78 0 53 582 3 23 1 71 0 53 614 3 15 1 67 0 53 634 3 05 1 62 0 53 666 28 26 3 45 1 41 0 41 614 3 35 1 37 0 41 646 3 30 1 35 0 41 666 3 20 1 31 0 41 685 29 18 2 94 2 73 0 93 512 2 81 2 62 0 93 538 2 70 ...

Page 21: ... 685 2 23 1 71 0 77 723 28 22 2 73 1 77 0 65 678 2 55 1 66 0 65 717 2 38 1 54 0 65 742 28 24 2 88 1 52 0 53 704 2 70 1 43 0 53 736 2 55 1 35 0 53 768 28 26 3 03 1 24 0 41 730 2 85 1 17 0 41 762 2 68 1 10 0 41 794 29 18 2 45 2 28 0 93 627 2 25 2 09 0 93 666 2 08 1 93 0 93 691 29 20 2 58 2 09 0 81 653 2 40 1 94 0 81 685 2 23 1 80 0 81 723 29 22 2 73 1 88 0 69 678 2 55 1 76 0 69 717 2 38 1 64 0 69 74...

Page 22: ... 11 3 04 0 74 961 3 99 2 95 0 74 983 3 85 2 85 0 74 1026 28 22 4 46 2 77 0 62 940 4 31 2 67 0 62 999 4 20 2 60 0 62 1026 4 03 2 50 0 62 1069 28 24 4 69 2 35 0 50 983 4 52 2 26 0 50 1037 4 41 2 21 0 50 1069 4 27 2 14 0 50 1123 28 26 4 83 1 84 0 38 1037 4 69 1 78 0 38 1091 4 62 1 76 0 38 1123 4 48 1 70 0 38 1156 29 18 4 11 3 70 0 90 864 3 94 3 54 0 90 907 3 78 3 40 0 90 950 3 64 3 28 0 90 994 29 20 ...

Page 23: ... 0 74 1156 3 12 2 31 0 74 1220 28 22 3 82 2 37 0 62 1145 3 57 2 21 0 62 1210 3 33 2 06 0 62 1253 28 24 4 03 2 01 0 50 1188 3 78 1 89 0 50 1242 3 57 1 79 0 50 1296 28 26 4 24 1 61 0 38 1231 3 99 1 52 0 38 1285 3 75 1 42 0 38 1339 29 18 3 43 3 09 0 90 1058 3 15 2 84 0 90 1123 2 91 2 61 0 90 1166 29 20 3 61 2 81 0 78 1102 3 36 2 62 0 78 1156 3 12 2 43 0 78 1220 29 22 3 82 2 52 0 66 1145 3 57 2 36 0 6...

Page 24: ...Q INPUT Q INPUT Q INPUT 15 2 52 686 3 04 823 3 56 928 4 08 1002 4 60 1066 5 08 1097 5 60 1118 21 2 40 739 2 88 876 3 40 971 3 88 1044 4 40 1097 4 88 1129 5 38 1171 26 2 16 791 2 68 928 3 16 1023 3 68 1097 4 20 1150 4 68 1182 5 20 1213 MSZ GA25VA MUZ GA25VA MUZ GA25VAH Rated frequency 85Hz E1 E1 E1 MSZ GA35VA MUZ GA35VA MUZ GA35VAH Rated frequency 96Hz E1 E1 E1 NOTE Q Total capacity kW INPUT Total ...

Page 25: ... w1 w2 w1 w1 MUZ GA35VA MUZ GA35VAH w2 MUZ GA25VA MUZ GA25VAH 9 3 Relation between main sensor and actuator 9 2 R V coil control Heating ON Cooling OFF Dry OFF NOTE The 4 way valve reverses for 5 seconds right before start up of the compressor ON OFF ON OFF Outdoor fan motor Compressor 5 seconds 15 seconds ON OFF Compressor Outdoor fan motor R V coil ON OFF ON OFF COOL 5 seconds HEAT 5 seconds ON ...

Page 26: ...roubleshooting refer to 11 2 11 3 and 11 4 11 1 Cautions on troubleshooting 1 Before troubleshooting check the following 1 Check the power supply voltage 2 Check the indoor outdoor connecting wire for mis wiring 2 Take care the following during servicing 1 Before servicing the air conditioner be sure to turn off the main unit first with the remote controller and then after confirming the horizonta...

Page 27: ...oint Make sure to check at least two consecutive blinking cycles W2 Turn ON the power supply 1 While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button 2 First release RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds Deleting the abnorma...

Page 28: ...TION switch so that the memorized abnormal condition is deleted 3Release the failure mode recall function according to Releasing the failure mode recall function mentioned above Repair the defective parts Confirmation of abnormality presence W1 With the remote controller headed towards the indoor unit press TOO COOL or TOO WARM button to adjust the set temperature to 25 The outdoor unit is normal ...

Page 29: ...t thermistor exceeds 70 in COOL mode When temperature of fin temperature thermistor on the inverter P C board exceeds 82 MUZ GA25VA MUZ GA25VAH 83 MUZ GA35VA MUZ GA35VAH or temperature of P C board temperature thermistor exceeds 81 MUZ GA25VA MUZ GA25VAH 85 MUZ GA35VA MUZ GA35VAH When outdoor fan has stopped within 30 seconds 3 times in a row after outdoor fan start up unit stops When nonvolatile ...

Page 30: ...r power system abnormality Left lamp 6 time flash Cause Outdoor unit Trouble of thermistor in outdoor unit Left lamp 7 time flash Cause Outdoor unit Trouble of outdoor control system Refer to 11 6 o How to check of mis wiring and serial signal error when outdoor unit doesn t work All lamps Flash on and off at 0 5 second intervals Cause Indoor unit The horizontal vane is not installed correctly Ref...

Page 31: ...e protection Low discharge temperature protection Check stop valve Reconnect connector of compressor Refer to 11 6 A How to check inverter compressor Refer to 11 6 C Check of intelligent power module Refer to 11 6 G Check of outdoor thermistors Check stop valve Reconnect connector of compressor Refer to 11 6 A How to check inverter compressor Refer to 11 6 C Check of intelligent power module Repla...

Page 32: ... Open or short circuit Defrost thermistor RT61 Fin temperature thermistor RT64 Measure the resistance with a tester Before measurement hold the thermistor with your hands to warm it up Part temperature 0 C 40 C Normal Abnormal Open or short circuit Ambient temperature thermistor RT65 292 374 236 304 31 41 31 41 31 41 Measure the resistance between the terminals with a tester Part temperature 20 C ...

Page 33: ...RED WHT Judgement Infinite Normal 0 dozens of Abnormal short Output voltage V 115V w Measure AC voltage between the lead wires at 3 points ohmmeter indication Normal infinite Abnormal 0 dozens of X1 X1 LED Inverter P C board Parts side 9 time flash 2 5 second OFF Flashing Check of open phase B Check of intelligent power module C How to check inverter compressor A When OPERATION INDICATOR lamp flas...

Page 34: ...current Judgement For reference 0 10 seconds Abnormal compressor short or poor contact 10 60 seconds Abnormal compressor lock out 60 seconds 5 minutes Abnormal refrigerant circuit defect more than 5 minutes Normal w Measure the resistance between the lead wires at 3 points Outdoor fan starts Abnormal Compressor winding short or layer short Compressor connector poor contact Abnormal Compressor lock...

Page 35: ...2 Ambient temperature thermistor RT65 Check of R V coil H Disconnect connector CN61 between the compressor and intelligent power module Turn ON the power supply and press EMERGENCY OPERATION switch twice HEAT mode Is there 230V AC between CN7211 and 2 on the power P C board 3 minutes after the power supply is turned ON Yes No Replace the power P C board Replace the 4 way valve Disconnect connector...

Page 36: ...er P C board Disconnect the connector CN61 between compressor and power transistor module Turn ON the power supply and press the EMERGENCY OPERATION switch Yes Yes Yes No No CN771 Power P C board 1 2 3 Fan motor Outdoor terminal block S3 S2 S1 Check the resistance of fan motor Refer to 11 5 Replace the power P C board Rectify indoor outdoor connecting wire No Replace the indoor electronic control ...

Page 37: ...etween compressor and intelligent power module Turn ON power supply and press EMERGENCY OPERATION switch Check the electric parts in main circuit Ok If flash refer to 11 4 Is there voltage 280V 370V DC between DB61 and DB61 on the inverter P C board Refer to 11 7 1 Dose LED on the inverter P C board light up or flash Refer to 11 7 1 Outdoor terminal block S3 S2 S1 Yes Yes Yes No No Replace the ind...

Page 38: ...ance of LEV have the characteristics Refer to 11 5 Measure each voltage between connector pins of CN724 on the inverter P C board 1 Pin3 Pin1 2 Pin4 Pin1 3 Pin5 Pin1 4 Pin6 Pin1 Is there about 3 5V AC between each NOTE Measure the voltage by an analog tester No Yes Yes Yes No Replace the expansion valve Yes No No Properly fix the LEV to the expansion valve Replace the inverter P C board NOTE After...

Page 39: ...resistance of defrost heater normal Refer to 11 5 3 Does the heater protector remain conducted not open 4 Are both ambient temperature thermistor and circuit of defrost heater securely connected to connectors 26H CN726 CN722 H 2 1 2 1 2 3 Outdoor base gets frozen MUZ GA25VAH MUZ GA35VAH Check of inverter P C board N Outdoor fan motor does not operate or stops immediately after starting up Yes 10 t...

Page 40: ...y Yes Yes No Yes As for indoor unit refer to service manual OB378 Inverter P C board Parts side LED Blinking Turn OFF the power supply Turn ON the power supply Is there 230V AC between outdoor terminal block S1 and S2 Does the left lamp of OPERATION INDICATOR lamp light up Confirmation of the power to the indoor unit Press EMERGENCY OPERATION switch Check the power supply Is the self check of the ...

Page 41: ...onnection Trouble of the solenoid valve itself Trouble of the solenoid valve Is CN923 on the outdoor power P C board firmly connected without disconnection or loose connection Does it repeat to go 0V and 230VAC at 5 second interval Correct the connection Measure the voltage between CN725 8 and 2 GND on the outdoor inverter P C board Does it repeat to go 0V and 12VDC at 5 second interval Measure th...

Page 42: ...ioner indoor outdoor wiring grounding wire antennas wiring from antennas receiver 5 Electric field intensity of the broadcast station affected by the electromagnetic noise 6 Presence or absence of amplifier such as booster 7 Operation condition of air conditioner when the electromagnetic noise enters in 1 Turn OFF the power supply once and then turn ON the power supply In this situation check for ...

Page 43: ...64 CN642 Ambient temperature thermistor RT65 CN643 Discharge temperature thermistor RT62 CN641 Defrost thermistor RT61 CN641 LEV connector CN724 230V AC DB61 Connecting wire with power P C board CN725 Jumper wire for change in defrost setting JS Front side of unit DB61 280V 370V DC Smoothing capacitor C63C Smoothing capacitor C63A Smoothing capacitor C63B MUZ GA35VA MUZ GA35VAH Rotational frequenc...

Page 44: ...Front side of unit Connecting wire with inverter P C board CN726 Refer to 11 6 M 230V AC MUZ GA25VA MUZ GA25VAH Solenoid valve coil CN923 230V AC MUZ GA25VA MUZ GA25VAH Output to drive outdoor Fan motor CN771 230V AC Varistor NR63 Varistor NR62 Varistor NR64 2 Power P C board Mitsubishi ilmalämpöpumput huoltaa ja korjaa Jäähdytinpalvelu RefGroup Oy www ilmalämpöpumput com ...

Page 45: ...nism 1Slide the sleeve 2Pull the terminal while pushing the locking lever 1Hold the sleeve and pull out the terminal slowly The terminal which has the locking mechanism can be detached as shown below There are two types Refer to 1 and 2 of the terminal with locking mechanism The terminal without locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching Te...

Page 46: ...e the compressor connector CN61 5 Remove the screws fixing the relay panel See Photo 3 6 Remove the inverter assembly See Photo 3 7 Disconnect all connectors and lead wires on the inverter P C board See Photo 4 8 Remove the inverter P C board from the inverter assembly 9 Remove the screw fixing the power P C board See Photo 4 10 Disconnect all connectors and lead wires on the power P C board 11 Re...

Page 47: ...4 way valve 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm2 0 MPa 5 Detach the welded part of the suction and the discharge pipe ...

Page 48: ... PARTS AND FUNCTIONAL PARTS 1 11 12 2 18 20 13 10 9 MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 E1 E1 E1 3 4 5 6 7 8 19 17 23 21 22 24 15 14 16 Mitsubishi ilmalämpöpumput huoltaa ja korjaa Jäähdytinpalvelu RefGroup Oy www ilmalämpöpumput com ...

Page 49: ...SER NET SEPARATOR SEPARATOR MOTOR SUPPORT MOTOR SUPPORT TOP PANEL OUTDOOR HEAT EXCHANGER OUTDOOR FAN MOTOR OUTDOOR FAN MOTOR DEFROST HEATER HEATER PROTECTOR CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE SOLENOID VALVE COIL SOLENOID VALVE E02 927 232 E02 927 521 E02 931 501 E02 927 501 E02 927 290 E02 928 290 E02 928 900 E02 927 900 E02 065 506 E02 927 661 E02 927 662 E02 927 245 E02 927...

Page 50: ...E02 127 382 E02 661 385 1 2 3 4 5 6 7 8 9 10 11 12 Symbol in Wiring Diagram Q ty unit DEFROST DISCHARGE 250V 20A 3P 3P Including heat sink and RT64 Including heat sink and RT64 Including heat sink and RT64 Including heat sink and RT64 250V 3 15A Remarks Part No No Part Name L61 21S4 21S4 RT61 RT62 RT65 F61 TB1 TB2 F71 F801 NR62 NR63 NR64 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 51: ...face of the heat exchanger and line flow fan if you attach QUICK CLEAN KIT to your vacuum cleaner heat exchanger Symbol in Wiring Diagram Remarks Parts No Parts Name E02 927 113 E02 927 115 E02 927 112 2 3 4 BRUSH NOZZLE UNIVERSAL ADAPTER No Q ty unit 1 1 1 1 1 1 1 1 1 1 1 1 MUZ GA25VA E1 MUZ GA25VAH E1 MUZ GA35VA E1 MUZ GA35VAH E1 2 4 3 MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH E1 E1 E1 E1 Mi...

Page 52: ...C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jan 2005 No OB379 6 Made in Japan New publication effective Jan 2005 Specifications subject to change without notice Mitsubishi ilmalämpöpumput huoltaa ja korjaa Jäähdytinpalvelu RefGroup Oy www ilmalämpöpumput com ...

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