Mitsubishi MUY-D30NA Service Manual Download Page 7 | Manualshive

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MUZ-D30NA MUZ-D30NA-

U1

MUZ-D36NA MUZ-D36NA-

U1

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WIRING DIAGRAM

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Summary of Contents for MUY-D30NA

Page 1: ...22 11 DISASSEMBLY INSTRUCTIONS 41 Models MUZ D30NA 1 U1 U2 MUZ D36NA 1 U1 U2 MUY D30NA 1 MUY D36NA 1 SPLIT TYPE AIR CONDITIONERS OUTDOOR UNIT Indoor unit service manual MSZ D NA Series OBH501 MSY D N...

Page 2: ...y Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manual...

Page 3: ...D30NA U2 MUZ D36NA MUZ D36NA 1 MUZ D36NA U1 MUZ D36NA U2 MUY D30NA MUY D30NA 1 MUY D36NA MUY D36NA 1 1 Wiring diagram has been changed 2 Fan motor has been changed PART NAMES AND FUNCTIONS 2 MUZ D30N...

Page 4: ...n circuit ampacity A 21 Fan motor F L A 0 93 Compressor Model TNB220FMCHT R L A 16 L R A 20 Refrigeration oil cc 870 NEO22 Refrigerant control Linear expansion valve Sound level 1 Cooling dB A 55 55 5...

Page 5: ...15 Max temperature Heating at minimum compressor Speed 70 60 62 56 5 High temperature Heating at minimum compressor Speed 70 60 47 43 Frost Accumulation at rated compressor Speed 70 60 35 33 Frost Acc...

Page 6: ...e open 4 inch or more 8 inch or more if there are obstacles to both sides Open as a rule 20 inch or more if the back both sides and top are open 14 in or more 4 in or more REQUIRED SPACE Unit inch MUZ...

Page 7: ...7 MUZ D30NA MUZ D30NA U1 MUZ D36NA MUZ D36NA U1 5 WIRING DIAGRAM...

Page 8: ...8 MUZ D30NA 1 MUZ D30NA U2 MUZ D36NA 1 MUZ D36NA U2...

Page 9: ...9 MUY D30NA MUY D36NA...

Page 10: ...10 MUY D30NA 1 MUY D36NA 1...

Page 11: ...insulator O D 0 142 I D 0 094 1 31 32 3 6 2 4 50 Oil separator Strainer 100 High pressure Switch Capillary tube O D 0 071 x I D 0 024 x 39 3 8 1 8 x 0 6 x 1 000 O D 0 142 x I D 0 094 x 1 31 32 3 6 x...

Page 12: ...g to the calculation Model Outdoor unit precharged Refrigerant piping length one way ft 25 30 40 50 60 70 80 90 100 MUZ D30NA MUZ D36NA 4 lb 10 oz 0 2 96 8 88 14 80 20 72 26 64 32 56 38 48 44 40 Calcu...

Page 13: ...5 24 5 4 05 29 6 22 3 4 32 27 0 20 3 4 49 NOTE 1 IWB Intake air wet bulb temperature TC Total Capacity x103 Btu h SHC Sensible Heat Capacity x103 Btu h TPC Total Power Consumption kW 2 SHC is based on...

Page 14: ...3 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 27 29 31 33 35 37 39 41 43 Indoor intake air WB temperature...

Page 15: ...ature F MUZ D30NA PSIG Condensing pressure 86 80 75 70 68 70 75 80 85 90 95 100 105 F 90 100 110 120 130 140 150 Suction pressure Outdoor ambient temperature PSIG 86 80 75 70 68 70 75 80 85 90 95 100...

Page 16: ...any frost MUZ D36NA MUZ D30NA 75 70 65 75 70 65 PSIG PSIG Condensing pressure Outdoor ambient temperature 14 20 25 30 35 40 45 50 55 60 65 70 F 200 500 480 460 440 420 400 380 360 340 320 300 280 260...

Page 17: ...6 18 65 17 86 17 25 15 56 15 05 13 56 18 95 17 26 Fan motor current A 0 80 0 72 Refrigerant circuit Condensing pressure PSIG 468 404 480 420 453 475 Suction pressure PSIG 126 96 122 94 125 119 Dischar...

Page 18: ...quency of compressor 0 50 100 150 0 5 1 0 1 5 Hz 0 50 100 150 0 5 1 0 1 5 Hz 0 50 100 150 0 5 1 0 1 5 Hz 0 50 100 150 0 5 1 0 1 5 Hz Capacity correction factors Input correction factors Input correcti...

Page 19: ...continues to operate for 30 minutes 3 Compressor operates at rated frequency in COOL mode or 58 Hz in HEAT mode 4 Indoor fan operates at High speed 5 After 30 minutes test run operation finishes and...

Page 20: ...n Ambient temperature thermistor Cooling Low ambient temperature operation 8 2 R V COIL CONTROL MUZ Heating ON Cooling OFF Dry OFF NOTE The 4 way valve reverses for 5 seconds right before start up of...

Page 21: ...ng How to activate pre heat control 1 Turn OFF the power supply for the air conditioner before making the setting 2 Set the 2nd Dip Switch of SW1 on the outdoor electronic control P C board to ON to a...

Page 22: ...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 conn...

Page 23: ...uttons for another 3 seconds Confirm that the indicators on the LCD screen shown in the right figure are all displayed Then release the buttons Press OPERATE STOP ON OFF button of the remote controlle...

Page 24: ...N 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 t...

Page 25: ...g Lighting The outdoor heat exchanger temperature exceeds 158 F 70 C during cooling or the indoor gas pipe temperature exceeds 158 F 70 C during heating MUZ Check refrigerant circuit and refrigerant a...

Page 26: ...eration Check the voltage of power supply Replace the power board Bus bar voltage 1 5 times Goes out The bus bar voltage exceeds 400 V or falls to 200 V or below during compressor operating Bus bar vo...

Page 27: ...ck the connecting wire among outdoor elec tronic control P C board noise filter P C board and power board 10 Outdoor unit stops and restarts 3 minutes later is repeated Twice Goes out IPM protection O...

Page 28: ...he discharge temperature exceeds 212 F 100 C during operation Check refrigerant circuit and refrigerant amount Refer to 10 5 Check of LEV Refer to 10 5 Check of outdoor thermistors 23 4 times Lighting...

Page 29: ...ith your hands to warm it up Refer to 10 6 Test point diagram and voltage 1 Outdoor electron ic control P C board for the chart of thermistor Compressor Measure the resistance between terminals using...

Page 30: ...pressor winding resistance between the compressor terminals Is the resistance between each terminal normal Yes No Replace the compressor Reconnect the lead wire of compressor and turn on power supply...

Page 31: ...oor power board Is the thermistor normal Refer to 10 6 1 Reconnect the connector of thermistor Turn ON the power supply and press EMERGENCY OPERATION switch No Replace the thermistor except RT64 When...

Page 32: ...il 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 con...

Page 33: ...C fan motor Replace the outdoor electronic control P C board Yes Yes No Fixed to either 5 or 0 VDC No No Yes Is there voltage of 208 230 VAC in the power supply terminal block Check the connecting of...

Page 34: ...r start 1 Replace the compressor Compressor start failure Activate pre heat control Refer to 9 1 PRE HEAT CONTROL No Yes Does the compressor run for 10 seconds or more after it starts Check the refrig...

Page 35: ...hted 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...

Page 36: ...ltage of power supply Confirm outdoor unit failure mode recall function Refer to 10 2 2 Blink 5 times Confirm LED1 indication lamp on the outdoor electronic control P C board Replace the power board B...

Page 37: ...ngth 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...

Page 38: ...an motor Defrost thermistor RT61 MUZ CN661 Discharge temperature thermistor RT62 CN661 Outdoor heat exchanger temperature thermistor RT68 CN661 Rush current relay R V coil 12 VDC 15 V 15 V CN931 CN701...

Page 39: ...6NA 2 Noise filter P C board MUZ CN912 R V coil 208 230 VAC 60 Hz Output 208 230 VAC 60 Hz Input 208 230 VAC 60 Hz Output F64 FUSE T2AL250V CN902 To power board CN903 To power board CN61 NR64 VARISTOR...

Page 40: ...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 VDC pulse wave 2 5 Zero cross signal...

Page 41: ...ocking lever Slide the sleeve Pull the terminal while pushing the locking lever Hold the sleeve and pull out the terminal slowly Photo 2 Photo 1 Photo 3 Screws of the cabinet Screws of the cabinet Scr...

Page 42: ...wires on the electronic control P C board 7 Remove the electronic control P C board from the inverter assembly 8 Remove the screws fixing the power board assembly 9 Disconnect all connectors and lead...

Page 43: ...rmistor from its holder MUZ 4 Pull out the discharge temperature thermistor from its hold er Photo 4 5 Pull out the outdoor heat exchanger temperature thermistor from its holder 6 Pull out the ambient...

Page 44: ...hoto 8 7 Removing the reactor 1 Remove the top panel cabinet service panel and the back panel Refer to 1 2 Disconnect the reactor lead wire 3 Remove the screws of the reactor and remove the reactor Ph...

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