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Mitsubishi Electric Mr.Slim MUZ-A17NA, Руководство по обслуживанию

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83

3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

No. 

RoHS

Part No. 

Part name 

Symbol 

in Wiring 

Diagram 

Q'ty/unit

Remarks

MUZ-

MUY-

A24NA

GA24NA

A24NA

GA

24NA

-

1

-

U1

-

U2

-

U1

-

1

1 G E12 819 297 TOP PANEL

1

1

1

1

1

1

1

1

1

2

G E12 A53 630

OUTDOOR HEAT EXCHANGER

1

1

G E12 A58 630

1

1

1

1

G E12 E34 630

1

1

G E12 E35 630

1

3

G E12 A58 301

OUTDOOR FAN MOTOR

MF

1

1

1

1

1

1

RC0J60-

□□

G E12 E34 301

1

1

1 RC0J77-

□□

4 G E12 851 501 PROPELLER 

1

1

1

1

1

1

1

1

1

5 G E12 819 232 CABINET

1

1

1

1

1

1

1

1

1

6 G E12 819 521 FAN GUARD

1

1

1

1

1

1

1

1

1

7 G E12 819 009 HANDLE

1

1

1

1

1

1

1

1

1

8 G E12 851 290 BASE

1

1

1

1

1

1

1

1

1

9

G E12 065 506

COMPRESSOR RUBBER SET

3

3

3

3 RUBBERS/SET

G E12 C34 506

3

3

3

3

3

3

10

G E12 A56 900

COMPRESSOR MC

1

1

1

1

1

1

SNB130FPDH

G E12 E34 900

1

1

1

SNB130FQBH

11 G E12 A58 661 STOP VALVE (GAS)

1

1

1

1

1

1

1

1

1

ø5/8

12 G E12 821 662 STOP VALVE (LIQUID)

1

1

1

1

1

1

1

1

1

ø1/4

13 G E12 A49 641 SERVICE PORT

2

2

2

2

2

2

2

2

2

1 PC/SET

14 G E12 851 493 EXPANSION VALVE COIL

LEV

1

1

1

1

1

1

1

1

1

15 G E12 851 640 EXPANSION VALVE

1

1

1

1

1

1

1

1

1

16 G E12 A58 490 R.V. COIL

21S4

1

1

1

1

1

1

17 G E12 A56 961 4-WAY VALVE

1

1

1

1

1

1

1

1

1

18 G E12 819 650 VALVE COVER

1

1

1

1

1

1

1

1

1

19

G E12 819 245

SERVICE PANEL

1

1

1

1

1

1

G E12 D20 245

1

1

1

20 G E12 935 374 TERMINAL BLOCK

TB2

1

1

1

1

1

1

1

1

1

3 P

21 G E12 A53 374 TERMINAL BLOCK

TB1

1

1

1

1

1

1

1

1

1

2 P

22

G E12 851 337

REACTOR

L

1

1

1

1

1

1

G E12 A87 337

1

1

1

23

G E12 A58 444

NOISE FILTER P.C. BOARD

1

1

1

1

1

1

G E12 A53 444

1

1

1

24 G E12 935 309 AMBIENT TEMPERATURE THERMISTOR

RT65

1

1

1

1

1

1

1

1

1

25

G E12 851 308

THERMISTOR SET

RT61,RT62,RT68 1

1

1

1

1

1

DEFROST, DISCHARGE

OUTDOOR HEAT EXCHANGER

G E12 A53 308

RT62,RT68

1

1

1

DISCHARGE

OUTDOOR HEAT EXCHANGER

26

G E12 A58 440

POWER BOARD

1

1

1

1

1

1

Including heat sink and RT64

G E12 E34 440

1

1

1

27

G E12 A58 450

OUTDOOR ELECTRONIC 

CONTROL P.C. BOARD

1

1

G E12 A53 450

1

1

G E12 B13 450

1

1

G E12 E34 450

1

G E12 E37 450

1

G E12 E35 450

1

28

G E12 A58 233

BACK PANEL (OUT)

1

1

1

G E12 D91 233

1

1

1

G

E12 E34 233

1

1

1

29 G E12 817 009 HANDLE

1

1

1

1

1

1

1

1

1

30 G E12 851 515 MOTOR SUPPORT

1

1

1

1

1

1

1

1

1

31 G E12 851 936 CAPILLARY TUBE (TAPER PIPE)

1

1

1

1

1

1

1

1

1

O.D. 0.142   I.D.0.094

 1-31/32

Содержание Mr.Slim MUZ-A17NA

Страница 1: ... Models MUZ A09NA 1 U1 U2 MUZ A12NA U1 MUZ A15NA U1 MUZ A17NA U1 MUZ A24NA 1 U1 U2 MUY A15NA MUY A17NA MUY A24NA 1 U1 U2 MUZ GA24NA U1 MUY GA24NA SPLIT TYPE AIR CONDITIONERS OUTDOOR UNIT Indoor unit service manual MSZ A NA Series OB450 MSZ GA NA Series OB450 MUZ A09 12 15 17NA MUY A15 17NA NOTE RoHS compliant products have G mark on the spec name plate For servicing of RoHS compliant products refe...

Страница 2: ...stors has been corrected Revision C 10 6 Test point diagram and voltage has been corrected 10 6 3 Outdoor electronic control P C board the chart of thermistor has been corrected Revision D MUZ A24NA 1 MUZ A24NA U2 and MUY A24NA 1 have been added Revision E MUZ GA24NA and MUY GA24NA have been added ...

Страница 3: ...een changed AC DC 5 Compressor has been changed AC DC MUZ A09NA MUZ A09NA 1 MUZ A09NA U1 MUZ A09NA U2 1 Refrigerant system diagram has been changed MUZ A24NA MUZ A24NA 1 MUZ A24NA U1 MUZ A24NA U2 MUY A24NA MUY A24NA 1 1 Wiring diagram has been changed MUZ A24NA 1 MUZ GA24NA MUZ A24NA U2 MUZ GA24NA U1 MUY A24NA 1 MUY GA24NA 1 Compressor has been changed SNB130FPDH SNB130FQBH 2 Wiring diagram has be...

Страница 4: ...handling Pseudo azeotropic refrigerant Single refrigerant Chlorine Not included Included Safety group ASHRAE A1 A1 A1 Molecular weight 72 6 86 5 Boiling point F 60 5 41 4 Steam pressure 77 F PSIG 225 82 136 34 Saturated steam density 77 F lb ft 3 3 995 2 772 Combustibility Non combustible Non combustible ODP 1 0 0 055 GWP 2 1730 1700 Refrigerant charge method From liquid phase in cylinder Gas phas...

Страница 5: ...work to be used with R22 flare tool Vacuum pump adapter New Provided to prevent the back flow of oil This adapter enables you to use vac uum pumps Electronic scale for refrigerant charging New It is difficult to measure R410A with a charging cylinder because the refriger ant bubbles due to high pressure and high speed vaporization No Not Substitutable for R410A Yes Substitutable for R410A 2 Refrig...

Страница 6: ...gerant inside the cylinder and the outdoor unit In this case capacity of the refrigeration cycle decreases or normal operation can be impossible However charging the liquid refrigerant all at once may cause the compressor to be locked Thus charge the refrigerant slowly Electronic scale for refrigerant charging Outdoor unit Refrigerant gas cylinder operating valve Refrigerant gas cylinder for R410A...

Страница 7: ...ance at 68 F Ω 0 49 R L A 7 8 L R A 9 2 Refrigerant control Liner expansion valve Sound level 1 dB A 48 Defrost method Reverse cycle Dimensions W in 31 1 2 D in 11 1 4 H in 21 5 8 Weight Ib 82 75 82 External finish Munsell 3Y 7 8 1 1 Remote controller Wireless type Control voltage by built in transformer 12 24 VDC Refrigerant piping Not supplied Refrigerant pipe size Min wall thickness Liquid in 1...

Страница 8: ...mpacity A 14 Fan motor F L A 0 52 Compressor Model SNB130FPDH Winding resistance at 68 F Ω 0 45 R L A 10 1 L R A 12 Refrigerant control Liner expansion valve Sound level 1 dB A 50 50 52 52 Defrost method 51 53 Dimensions W in 31 1 2 D in 11 1 4 H in 21 5 8 Weight Ib 88 External finish Munsell 3Y 7 8 1 1 Remote controller Wireless type Control voltage by built in transformer 12 24 VDC Refrigerant p...

Страница 9: ...7 Fan motor F L A 0 93 Compressor Model SNB130FPDH SNB130FQBH Winding resistance at 68 F Ω 0 45 0 98 R L A 10 1 12 8 L R A 16 0 16 0 Refrigerant control Liner expansion valve Sound level 1 dB A 55 Defrost method Reverse cycle Dimensions W in 33 1 16 D in 13 H in 33 7 16 Weight Ib 128 117 External finish Munsell 3Y 7 8 1 1 Remote controller Wireless type Control voltage by built in transformer 12 2...

Страница 10: ...rature Heating at minimum com pressor Speed 70 60 62 56 5 High temperature Heating at minimum com pressor Speed 70 60 47 43 Frost Accumulation at rated compressor Speed 70 60 35 33 Frost Accumulation at Intermediate com pressor Speed 5 70 60 35 33 5 At Intermediate compressor Speed Cooling rated compressor speed minimum compressor speed 3 minimum compressor speed OPERATING RANGE 1 POWER SUPPLY Rat...

Страница 11: ...rain hole ø1 5 8 4 3 8 13 16 Oval hole REQUIRED SPACE Air in Liquid pipe 1 4 flared Gas pipe 3 8 flared MUZ A09 12NA 1 2 flared MUZ A15 17NA MUY A15 17NA 6 23 32 2 5 7 8 2 23 32 1 3 4 15 3 4 12 12 3 4 13 9 16 11 16 1 9 16 7 8 21 5 8 11 1 32 13 32 31 1 2 19 11 16 5 15 16 11 29 32 17 32 29 32 11 1 4 Air in handle Air in Air out 2 3 8 13 16 Oval hole Drain hole ø1 5 8 REQUIRED SPACE Basically open 4 ...

Страница 12: ...12 MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA 5 WIRING DIAGRAM ...

Страница 13: ...13 MUY A15NA MUY A17NA ...

Страница 14: ...14 MUZ A24NA MUZ A24NA U1 ...

Страница 15: ...15 MUZ A24NA 1 MUZ A24NA U2 ...

Страница 16: ...16 MUY A24NA ...

Страница 17: ...17 MUY A24NA 1 ...

Страница 18: ...18 MUZ GA24NA ...

Страница 19: ...19 MUY GA24NA ...

Страница 20: ...n valve Ambient temperature thermistor RT65 Muffler Muffler Muffler Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve with strainer Stop valve with service port Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating Refrigerant pipe ø3 8 with heat insulator Refrigerant pipe ø1 4 with heat insu...

Страница 21: ...utdoor heat exchanger temperature thermistor RT68 Ambient temperature thermistor RT65 Strainer 100 O D 0 142 I D 0 094 1 31 32 ø3 6 ø2 4 50 MUY A24NA MUY GA24NA Outdoor heat exchanger Flared connection Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve with service port Capillary tube Refrigerant flow in cooling Compressor Service port Service port 4 way valve Refrigeran...

Страница 22: ...ng to the calculation Model Outdoor unit precharged Refrigerant piping length one way ft 25 30 40 50 60 65 MUZ A09NA MUZ A09NA U1 MUZ A12NA 2 lb 5 oz 0 1 62 4 86 8 10 11 34 12 96 MUZ A09NA 1 MUZ A09NA U2 2 lb MUZ A15NA MUY A15NA MUZ A17NA MUY A17NA 2 lb 7 oz Calculation X oz 1 62 5 oz ft Refrigerant piping length ft 25 Model Outdoor unit precharged Refrigerant piping length one way ft 25 30 40 50 ...

Страница 23: ...5 1 56 15 0 9 8 1 69 14 0 9 1 1 79 12 8 8 3 1 88 63 16 4 12 8 1 35 15 2 11 9 1 50 14 1 11 0 1 61 12 8 10 0 1 72 11 7 9 2 1 79 MUY A17NA MUZ A17NA 71 19 8 10 3 1 84 18 5 9 6 2 02 17 4 9 0 2 17 16 2 8 4 2 29 14 9 7 7 2 38 67 18 8 12 2 1 74 17 5 11 4 1 91 16 2 10 5 2 07 15 1 9 8 2 19 13 9 9 0 2 30 63 17 7 13 8 1 66 16 4 12 8 1 83 15 2 11 9 1 98 13 9 10 8 2 11 12 6 9 9 2 19 MUY A24NA MUZ A24NA 71 27 0...

Страница 24: ... 70 12 4 1 55 15 1 1 84 17 8 2 04 20 1 2 15 20 7 2 19 23 4 2 28 65 12 7 1 48 15 8 1 77 18 4 1 99 20 7 2 10 21 3 2 13 23 9 2 24 MUZ A24NA 75 13 5 1 75 16 8 2 06 20 1 2 29 22 6 2 41 23 3 2 44 26 4 2 54 70 14 3 1 69 17 4 2 01 20 5 2 23 23 2 2 35 23 9 2 40 27 0 2 49 65 14 6 1 62 18 2 1 94 21 2 2 17 23 9 2 29 24 6 2 33 27 6 2 44 MUZ GA24NA 75 10 2 1 26 13 5 1 59 16 8 1 87 20 1 2 09 22 6 2 19 23 3 2 23 ...

Страница 25: ...3 Btu h 71 67 63 71 67 63 15 13 9 11 1 4 1 3 1 2 1 1 1 0 0 9 Indoor intake air WB temperature F Indoor intake air WB temperature F SHF at rating condition 0 70 318 CFM Airflow 65 75 85 95 105 115 Outdoor intake air DB temperature F Total power consumption kW Total capacity 10 3 Btu h 71 67 63 71 67 63 22 18 10 14 2 2 2 0 1 8 1 6 1 4 1 2 Indoor intake air WB temperature F Indoor intake air WB tempe...

Страница 26: ...3 Btu h MUZ A15NA MUZ A17NA MUZ A24NA 10 12 14 16 18 20 22 24 26 28 30 32 65 70 75 75 70 65 568 CFM Airflow 15 5 25 35 45 55 Outdoor intake air WB temperature F Indoor intake air DB temperature F Total power consumption kW Total capacity 10 3 Btu h 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 Indoor intake air DB temperature F MUZ GA24NA This value of frequency is not the same as the actual frequency in operat...

Страница 27: ...95 100 105 F 280 300 340 360 380 400 420 460 480 Indoor DB temperature F Outdoor ambient temperature 320 68 70 75 80 85 90 95 100 105 F 110 115 120 125 130 135 140 145 150 155 160 165 170 Suction pressure Outdoor ambient temperature Indoor DB temperature F PSIG 86 80 75 70 440 MUZ A15NA MUY A15NA 68 70 75 80 85 90 95 100 105 F 80 85 90 95 100 105 110 115 120 125 130 135 140 PSIG Condensing pressur...

Страница 28: ...6 80 75 70 68 70 75 80 85 90 95 100 105 F 80 85 90 95 100 105 110 115 120 125 130 135 140 Suction pressure Outdoor ambient temperature Indoor DB temperature F PSIG 86 80 75 70 68 70 75 80 85 90 95 100 105 F 260 300 340 380 420 460 500 540 580 Indoor DB temperature F Outdoor ambient temperature MUZ GA24NA MUY GA24NA PSIG Condensing pressure 86 80 75 70 86 80 75 70 68 70 75 80 85 90 95 100 105 F 260...

Страница 29: ... Condensing pressure Outdoor ambient temperature 14 20 25 30 35 40 45 50 55 60 65 70 F 340 320 300 280 260 240 360 380 400 440 420 460 480 Indoor DB temperature F 75 70 65 Suction pressure Outdoor ambient temperature 14 20 25 30 35 40 45 50 55 58Hz 58Hz 60 65 70 F 70 60 80 90 100 110 120 130 140 150 160 170 Indoor DB temperature F MUZ A09NA MUZ A09NA U1 MUZ A09NA 1 MUZ A09NA U2 75 70 60 PSIG PSIG ...

Страница 30: ... 20 25 30 35 40 45 50 55 60 65 70 F 280 260 240 220 200 300 320 340 380 360 400 420 440 460 Indoor DB temperature F 75 70 65 Suction pressure Outdoor ambient temperature 14 20 25 30 35 40 45 50 55 58Hz 60 65 70 F 70 60 50 80 90 100 110 120 130 140 150 160 Indoor DB temperature F 58Hz MUZ A15NA 75 70 65 PSIG PSIG Condensing pressure Outdoor ambient temperature 14 20 25 30 35 40 45 50 55 60 65 70 F ...

Страница 31: ... 340 360 380 75 70 65 PSIG Outdoor ambient temperature 15 5 20 10 25 30 35 40 45 50 55 60 65 70 F 58Hz Indoor DB temperature F 40 50 60 70 80 90 100 110 120 130 140 150 160 170 75 70 65 58Hz Indoor DB temperature F Outdoor ambient temperature 15 20 10 5 25 30 35 40 45 50 55 60 65 70 F ...

Страница 32: ...8 4 59 5 03 4 54 Fan motor current A 0 37 0 34 0 33 0 30 0 37 0 34 Refrigerant circuit Condensing pressure PSIG 363 368 393 372 395 393 Suction pressure PSIG 144 109 144 102 124 103 Discharge temperature F 145 153 155 165 169 164 Condensing temperature F 107 108 113 109 112 113 Suction temperature F 55 37 56 38 54 35 Comp shell bottom temp F 140 147 149 159 163 158 Ref pipe length ft 25 25 Refrige...

Страница 33: ...2 120 Comp current A 7 56 6 84 8 14 7 36 9 43 8 52 9 93 8 98 Fan motor current A 0 42 0 38 0 42 0 38 Refrigerant circuit Condensing pressure PSIG 425 458 442 493 Suction pressure PSIG 115 95 106 92 Discharge temperature F 182 180 189 194 Condensing temperature F 117 125 120 130 Suction temperature F 47 30 40 28 Comp shell bottom temp F 161 153 167 167 Ref pipe length ft 25 25 Refrigerant charge R4...

Страница 34: ...447 2 087 Comp current A 12 81 11 59 11 10 10 04 10 82 9 78 9 32 8 43 Fan motor current A 0 80 0 72 0 80 0 72 0 64 0 59 Refrigerant circuit Condensing pressure PSIG 447 401 413 375 Suction pressure PSIG 107 92 130 103 Discharge temperature F 181 170 168 173 Condensing temperature F 121 115 119 112 Suction temperature F 37 29 43 31 Comp shell bottom temp F 161 148 160 164 Ref pipe length ft 25 Refr...

Страница 35: ...150 Hz 0 0 0 5 1 0 1 5 0 50 100 150 Hz 0 0 0 5 1 0 1 5 0 50 100 150 Hz 0 0 0 5 1 0 1 5 2 0 0 50 100 150 Hz 0 0 0 5 1 0 1 5 2 0 Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capacity The operational frequency of compressor Correction of Cooling total input The operational frequency of compressor Correction of Heating ...

Страница 36: ...0 50 100 150 0 0 0 5 1 0 1 5 Hz 0 50 100 150 0 0 0 5 1 0 1 5 Hz 0 50 100 150 0 0 0 5 1 0 1 5 Hz Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capacity The operational frequency of compressor Correction of Cooling total input The operational frequency of compressor Correction of Heating total input The operational fre...

Страница 37: ...pressor has stopped running MUZ A09 12 15 17 MUY A15 17 Sensor Purpose Actuator Compressor LEV Outdoor fan motor R V coil Indoor fan motor Discharge temperature thermistor Protection Indoor coil temperature thermistor Cooling Coil frost prevention Heating High pressure protection Defrost thermistor Cooling High pressure protection Heating Defrosting Fin temperature thermistor Protection Ambient te...

Страница 38: ...rol P C board 3 When removing the electrical parts be careful of the residual voltage of smoothing capacitor 4 When removing the electronic control P C board hold the edge of the board with care NOT to apply stress on the components 5 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires Lead wiring Housing point 3 Troubleshooting procedure 1 ...

Страница 39: ...operation display section of the remote controller is displayed after 3 seconds Press OPERATE STOP ON OFF button of the remote controller the set temperature is displayed with the remote controller headed towards the indoor unit 1 Judgment of indoor outdoor abnormality Before blinking does the left lamp of OPERATION INDICA TOR lamp stay ON for 3 seconds Stays ON for 3 seconds without beep The outd...

Страница 40: ...ON again Press RESET button of the remote controller Repair the defective parts The outdoor unit is normal Release the failure mode recall function accord ing to the left mentioned procedure Deleting the memorized abnormal condition After repairing the unit recall the failure mode again according to Setting up the failure mode recall function 10 2 1 Press OPERATE STOP ON OFF button of the remote c...

Страница 41: ...tor temperature exceeds 158 F 70 C in HEAT mode MUZ Defrost thermistor exceeds 158 F 70 C in COOL mode Check refrigerant circuit and refrigerant amount Check stop valve 7 time flash 2 5 seconds OFF Fin temperature P C board temperature 7 time flash 2 5 seconds OFF Temperature of fin temperature thermistor on the inverter P C board exceeds 180 F 82 C 09 12 188 F 86 5 C 15 17 or temperature of P C b...

Страница 42: ...ssage Refer to 10 5 Check of outdoor fan motor P C board temperature 4 times Goes out The P C board temperature exceeds 158 F 70 C during operation 8 time flash Outdoor fan motor Lighting Lighting Failure occurs continuously three times within 30 seconds after the fan gets started Refer to 10 5 Check of outdoor fan motor 9 time flash Nonvolatile memory data Lighting 5 times Nonvolatile memory data...

Страница 43: ... 10 time flash 2 5 seconds OFF Outdoor fan motor Outdoor fan has stopped 3 times in a row within 30 seconds after outdoor fan start up Refer to 10 5 Check of outdoor fan motor Refer to 10 5 Check of inverter P C board 12 12 timeflash 2 5 seconds OFF Each phase current of compressor Each phase current of compressor cannot be detected nor mally Refer to 10 5 How to check inverter compressor 13 13 ti...

Страница 44: ...0 5 How to check in verter compressor Check the stop valve Check the power module PAM module Lock protection Overcurrent is detected within 30 minutes of compressor start up 11 3 times Goes out Discharge tempera ture protection Discharge temperature exceeds 241 F 116 C during opera tion and compressor stops Compressor can restart if discharge temperature thermistor reads 212 F 100 C or less 3 minu...

Страница 45: ...ction The discharge temperature exceeds 212 F 100 C during op eration Check refrigerant circuit and refrig erant amount Refer to 10 5 Check of LEV Refer to 10 5 Check of outdoor thermistors 23 4 times Lighting Low discharge tem perature protection The frequency of the compressor is kept 80 Hz or more and the discharge temperature is kept under 102 F 39 C for more than 20 minutes Refer to 10 5 Chec...

Страница 46: ...o warm it up Refer to 10 6 Test point diagram and voltage 1 Inverter P C board and 3 Outdoor electronic control P C board for the chart of thermistor Compressor MC Measure the resistance between the terminals with a tester Temperature 14 104 F Normal A09 12 A15 17 24 GA24 U V U W V W 0 43 0 53 Ω 0 39 0 49 Ω 0 86 1 06 Ω Outdoor fan motor MF Measure the resistance between the terminals with a tester...

Страница 47: ...ter turning on the power supply start EMERGENCY OPERATION After the outdoor fan starts running wait for 1 minute or more before measur ing the voltage Output voltage is 50 130 V The voltage may differ according to the tester Is output balanced Yes No Is the input voltage to the outdoor electronic control P C board 370 V or more Yes No Replace the power board Turn off power supply of indoor and out...

Страница 48: ...g the balance of voltage between the terminals Output voltage is 50 130 V The voltage may differ according to the tester Operation method Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit TEST RUN OPERATION Refer to 7 7 Measurement point at 3 points BLK U WHT V BLK U RED W WHT V RED W NOTE 1 Output voltage varies according to power supply voltage 2 Measur...

Страница 49: ...rd Discharge temperature RT62 Between CN661 pin 3 and pin 4 Outdoor heat exchanger temperature RT68 Between CN661 pin 7 and pin 8 Ambient temperature RT65 Between CN663 pin 1 and pin 2 Fin temperature RT64 Between CN3 pin 1 and pin 2 Outdoor power board Replace the thermistor except RT64 When RT64 is abnormal replace the inverter P C board or the outdoor power board Replace the inverter P C board ...

Страница 50: ...tted to R V coil Check if CN721 is connected Is there 208 230 VAC between CN721 and on the power P C board 3 minutes after the power supply is turned ON No Yes Replace the 4 way valve Unit operates COOL mode even if it is set to HEAT mode Is there 208 230 VAC between CN721 and on the power P C board 3 minutes after the power supply is turned ON Yes No Replace the 4 way valve Unit operates HEAT mod...

Страница 51: ...coil No Replace the R V coil Replace the 4 way valve Replace the noise filter P C board Yes Replace the electronic control P C board Cooling operation does not work Is there voltage of 208 230 VAC between pin1 and pin 2 at connector CN912 Disconnect the lead wire leading to the compressor 3 minutes after turning on the power supply start EMERGENCY OPERATION in COOL mode 1 2 Turn OFF power supply o...

Страница 52: ...hly Check the inverter P C board Refer to 10 5 Replace the outdoor fan motor Fixed to either 5 or 0 VDC No No Is the resistance between each ter minal of outdoor fan motor normal Refer to 10 4 Check the connection between the connector CN931 and CN932 Disconnect CN932 from outdoor electronic control P C board and turn on the power supply Rotate the outdoor fan motor manually and measure the voltag...

Страница 53: ... 1 No Check the electric parts in main circuit Yes Yes No Disconnect the connector CN61 between compressor and intelligent power module Turn ON power supply and press EMERGENCY OPERATION switch Inverter P C board Solder side DB61 280 370 VDC Is there voltage of 208 230 VAC in the power supply terminal block Check the connecting of parts of main power supply circuit Check the power supply cable Tur...

Страница 54: ...nverter P C board or the compressor Replace the power P C board Replace the power P C board Yes Yes No No When the current limiting resistor is open the rush current limiting relay X64 may not work properly Replace the noise filter P C board or the outdoor electronic control P C board Does LED on the outdoor electronic P C board light up Does the rush current limiting relay X64 work properly Norma...

Страница 55: ...ansion valve Replace the inverter P C board Replace the LEV coil Replace the expansion valve Is LEV coil properly fixed to the expansion valve Does the resistance of LEV coil have the characteristics Refer to 10 4 Do you hear the expansion valve click click Do you feel the expansion valve vibrate on touching it Turn ON the power supply Preparation of the remote controller While pressing both OPERA...

Страница 56: ...nnectors CN931 CN932 of outdoor fan motor If the connection is poor correct it Operate the outdoor unit by starting EMERGENCY OPERATION Check the LED indication on the in verter P C board Does the LED flash 10 time Replace the inverter P C board Check the corresponding parts following LED indication Refer to 10 3 Yes No Yes 10 time flash No Inverter P C board Solder side CN932 CN931 ...

Страница 57: ...rn ON the power supply Does the LED on the inverter P C board or the outdoor electronic control P C board repeat 3 6 second OFF and 0 8 second ON quick blinking 3 Yes No Lighted or not lighted Replace the inverter P C board or the outdoor electronic control P C board 2 2 Be careful of the residual voltage of smoothing capacitor Turn OFF the power supply Remove the short circuit between outdoor ter...

Страница 58: ...ength or the installation condition combination of specific conditions such as antennas or wiring Check the followings before asking for service 1 Devices affected by the electromagnetic noise TV sets radios FM AM broadcast shortwave 2 Channel frequency broadcast station affected by the electromagnetic noise 3 Channel frequency broadcast station unaffected by the electromagnetic noise 4 Layout of ...

Страница 59: ...lace the outdoor elec tronic control P C board Turn OFF power supply before removing P C board Confirm LED1 indication lamp on the outdoor electronic con trol P C board Turn ON power supply Start operation Blink 6 times Replace the outdoor elec tronic control P C board Lighting Replace the outdoor elec tronic control P C board Blink 9 times Replace the power board Confirm LED1 indication lamp on t...

Страница 60: ...n temperature thermistor RT64 CN642 Ambient temperature thermistor RT65 CN643 Discharge temperature thermistor RT62 CN641 Defrost thermistor RT61 CN641 LEV connector CN724 208 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 Rotational ...

Страница 61: ...08 230 VAC Back side of unit MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA MUY A15NA MUY A17NA Front side of unit Connecting wire with inverter P C board CN726 208 230 VAC Varistor NR63 Varistor NR62 Varistor NR64 2 Power P C board ...

Страница 62: ...nput CN932 20 90 VAC GND 5V 5 VDC pulse wave To fan motor Defrost thermistor RT61 MUZ Discharge temperature thermistor RT62 Outdoor heat exchanger temperature thermistor RT68 Rush current relay R V coil 1 2V DC 15V 15V CN931 CN661 CN701 Signal transmission To power board 5 VDC pulse wave GND CN702 Signal reception From power board 5 VDC pulse wave GND power board CN781 CN795 12 VDC pulse wave LEV ...

Страница 63: ...0Hz Input 208 230 VAC 60Hz Output CN901 To electronic control P C board MUZ A24NA MUY A24NA MUZ GA24NA MUY GA24NA F64 FUSE 2 A 250 V F911 FUSE MUZ 1 A 250 V 4 Noise filter P C board CN902 To power board CN903 To power board 208 230 VAC 60Hz Output NR64 VARISTOR ...

Страница 64: ... reception From electronic control P C board 5 V DC pulse wave CN3 Fin temperature thermistor RT64 1 3 294 370 VDC Output Connect to the compressor Voltage among phases 5 to 180 V Connect to the ground CN5 Primary current detection Connect to the noise filter CN2 Connect to the controller board 1 5 Signal transmission To electronic control P C board 5 V DC pulse wave 2 5 Zero cross signal 3 4 Not ...

Страница 65: ...e sleeve and check if there is a locking lever or not 2 The terminal with this connector has the locking mechanism Slide the sleeve Pull the terminal while pushing the locking lever Hold the sleeve and pull out the terminal slowly Connector Sleeve Locking lever DISASSEMBLY INSTRUCTIONS 11 Terminal with locking mechanism Detaching points The terminal which has the locking mechanism can be detached ...

Страница 66: ...rew fixing the power P C board Photo 4 10 Disconnect all connectors and lead wires on the power P C board 11 Remove the power P C board from the inverter assembly Photo 3 Photo 4 Photo 5 3 Removing R V coil MUZ 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor con necting wire and remove the back panel Refer to 1 3 Remove the inverter asse...

Страница 67: ...r and 4 way valve 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor con necting 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 PSIG 5 Detach the welded part of the suction and the dis charge pipe ...

Страница 68: ...emove the top panel 6 Remove the valve cover 7 Remove the screws of the cabinet 8 Remove the cabinet 9 Remove the screws of the back panel 10 Remove the back panel Photo 3 Photo 1 Photo 2 Screws of the cabinet Screw of the top panel Screws of the cabinet Screws of the cabinet Screw of the service panel Screws of the top panel Screw of the valve cover Screw of the motor support Conduit plate Screws...

Страница 69: ...e the inverter assembly 7 Disconnect all connectors and lead wires on the elec tronic control P C board 8 Remove the electronic control P C board from the inverter assembly 9 Remove the screws fixing the power board assembly 10 Disconnect all connectors and lead wires on the power board 11 Remove the power board from the inverter assembly 12 Disconnect all connectors and lead wires on the noise fi...

Страница 70: ...om its holder Photo 5 6 Pull out the outdoor heat exchanger temperature ther mistor from its holder Photo 6 7 Pull out the ambient temperature thermistor from its holder Photo 6 Photo 5 Photo 6 5 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 the inverter assembly Refer to 2 4 Remove the propeller 5 Remove the scre...

Страница 71: ...SIG 5 Detach the welded part of the suction and the dis charge pipe connected with compressor Photo 9 6 Remove the compressor nuts 7 Remove the compressor 8 Detach the welded part of 4 way valve and pipe Photo 8 Photo 8 Photo 9 7 Removing the reactor 1 Remove the top panel Refer to 1 2 Disconnect the reactor lead wire 3 Remove the screws of the reactor and remove the reactor Photo 10 Screws of the...

Страница 72: ... PARTS LIST non RoHS compliant 1 2 15 17 12 10 11 MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA MUY A15NA MUY A17NA 1 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 3 4 5 6 7 8 16 14 18 19 9 13 20 PARTS LIST 12 ...

Страница 73: ...1 STOP VALVE GAS 1 1 E02 A56 661 1 1 1 1 8 E02 927 662 STOP VALVE LIQUID 1 1 1 1 1 1 9 E02 A49 245 SERVICE PANEL 1 1 1 1 1 1 10 E02 A54 233 BACK PANEL 1 1 1 1 1 1 11 E02 A54 640 EXPANSION VALVE 1 1 1 1 1 1 12 E02 927 493 EXPANSION VALVE COIL LEV 1 1 1 1 1 1 13 E02 A56 961 4 WAY VALVE 1 1 1 1 E02 A54 961 1 1 14 E02 929 523 CONDENSER NET 1 1 1 1 1 1 15 E02 A54 293 SEPARATOR 1 1 1 1 1 1 16 E02 929 51...

Страница 74: ...74 8 1 4 MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA MUY A15NA MUY A17NA 2 OUTDOOR UNIT ELECTRICAL PARTS 2 3 5 6 7 ...

Страница 75: ...ER P C BOARD 1 1 1 1 1 1 3 E02 A54 490 R V COIL 21S4 1 1 1 1 4 E02 927 306 THERMISTOR SET RT61 RT62 1 1 1 1 1 1 DEFROST DISCHARGE 5 E02 927 308 AMBIENT TEMPERATURE THERMISTOR RT65 1 1 1 1 1 1 6 E02 A54 374 TERMINAL BLOCK TB1 1 1 1 1 1 1 2 P 7 E02 A55 374 TERMINAL BLOCK TB2 1 1 1 1 1 1 3 P 8 E02 A54 451 INVERTER P C BOARD 1 Including heat sink and RT64 E02 A55 451 1 E02 A56 451 1 1 E02 A57 451 1 1 ...

Страница 76: ...76 4 18 1 12 8 10 2 5 7 6 16 14 19 20 21 22 23 28 29 30 3 MUZ A24NA MUY A24NA 3 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS 9 15 17 27 26 25 24 11 13 ...

Страница 77: ...ORT 2 2 1 PC SET 14 E02 851 493 EXPANSION VALVE COIL LEV 1 1 15 E02 851 640 EXPANSION VALVE 1 1 16 E02 A58 490 R V COIL 21S4 1 17 E02 A56 961 4 WAY VALVE 1 1 18 E02 819 650 VALVE COVER 1 1 19 E02 819 245 SERVICE PANEL 1 1 20 E02 935 374 TERMINAL BLOCK TB2 1 1 3 P 21 E02 A53 374 TERMINAL BLOCK TB1 1 1 2 P 22 E02 851 337 REACTOR L 1 1 23 E02 A58 444 NOISE FILTER P C BOARD 1 E02 A53 444 1 24 E02 935 ...

Страница 78: ...78 12 2 RoHS PARTS LIST RoHS compliant 1 2 15 17 12 10 11 MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA MUY A15NA MUY A17NA 1 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 3 4 5 6 7 8 16 14 18 19 9 13 20 ...

Страница 79: ... 1 1 1 1 1 1 ø1 4 9 G E12 A49 245 SERVICE PANEL 1 1 1 1 1 1 1 1 1 1 1 1 10 G E12 A54 233 BACK PANEL 1 1 1 1 1 1 1 1 1 1 1 1 11 G E12 A54 640 EXPANSION VALVE 1 1 1 1 1 1 1 1 1 1 1 1 12 G E12 927 493 EXPANSION VALVE COIL LEV 1 1 1 1 1 1 1 1 1 1 1 1 13 G E12 A56 961 4 WAY VALVE 1 1 1 1 1 1 G E12 A54 961 1 1 1 1 1 1 14 G E12 929 523 CONDENSER NET 1 1 1 1 1 1 1 1 1 1 G E12 838 523 1 1 15 G E12 A54 293 ...

Страница 80: ...80 8 1 4 MUZ A09NA MUZ A12NA MUZ A15NA MUZ A17NA MUY A15NA MUY A17NA 2 OUTDOOR UNIT ELECTRICAL PARTS 2 3 5 6 7 ...

Страница 81: ...1 1 1 1 1 1 4 G E12 927 306 THERMISTOR SET RT61 RT62 1 1 1 1 1 1 1 1 1 1 1 1 DEFROST DISCHARGE 5 G E12 927 308 AMBIENT TEMPERATURE THERMISTOR RT65 1 1 1 1 1 1 1 1 1 1 1 1 6 G E12 A54 374 TERMINAL BLOCK TB1 1 1 1 1 1 1 1 1 1 1 1 1 2 P 7 G E12 A55 374 TERMINAL BLOCK TB2 1 1 1 1 1 1 1 1 1 1 1 1 3 P 8 G E12 A54 451 INVERTER P C BOARD 1 Including heat sink and RT64 G E12 B49 451 1 G E12 A55 451 1 G E12...

Страница 82: ...82 4 18 1 12 8 10 2 5 7 6 16 14 19 20 21 22 23 28 29 30 3 MUZ A24NA MUY A24NA MUZ GA24NA MUY GA24NA 3 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS 9 15 17 27 26 25 24 11 13 ...

Страница 83: ...N VALVE COIL LEV 1 1 1 1 1 1 1 1 1 15 G E12 851 640 EXPANSION VALVE 1 1 1 1 1 1 1 1 1 16 G E12 A58 490 R V COIL 21S4 1 1 1 1 1 1 17 G E12 A56 961 4 WAY VALVE 1 1 1 1 1 1 1 1 1 18 G E12 819 650 VALVE COVER 1 1 1 1 1 1 1 1 1 19 G E12 819 245 SERVICE PANEL 1 1 1 1 1 1 G E12 D20 245 1 1 1 20 G E12 935 374 TERMINAL BLOCK TB2 1 1 1 1 1 1 1 1 1 3 P 21 G E12 A53 374 TERMINAL BLOCK TB1 1 1 1 1 1 1 1 1 1 2 ...

Страница 84: ...t 2006 MITSUBISHI ELECTRIC CO LTD Distributed in Mar 2009 No OB451 REVISED EDITION E 4 Distributed in May 2008 No OB451 REVISED EDITION D 6 Distributed in Nov 2007 No OB451 REVISED EDITION C 7 Distributed in Feb 2007 No OB451 REVISED EDITION B 7 Distributed in Sep 2006 No OB451 REVISED EDITION A 7 Distributed in Apr 2006 No OB451 7 Made in Japan New publication effective Mar 2009 Specifications su...

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