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37

I Check of outdoor fan motor

Is the resistance between each ter-

minal of outdoor fan motor normal?

(Refer to 11-4.)

Disconnect CN932 from the inverter P.C. board, and turn on the

power supply.

Rotate the outdoor fan motor manually and measure the voltage

of CN931.

Between 1(+) and 5(-)

Between 2(+) and 5(-)

Between 3(+) and 5(-)

Does the voltage between each terminal become 5 and 0

VDC repeatedly?

Does the outdoor fan motor rotate smoothly?

Replace the outdoor fan motor.

Replace the inverter P.C. board.

Yes

Yes

No

(Fixed to either 5 or 0 VDC)

No

No

Yes

Disconnect the connectors CN931

and CN932 from the inverter P.C.

board.

Check the connection between the

connector CN931 and CN932.

OBH629A

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Содержание MUZ-SF25VE

Страница 1: ...Models SPLIT TYPE AIR CONDITIONERS NOTE RoHS compliant products have G mark on the spec name plate HFC utilized R410A No OBH629 REVISED EDITION A OUTDOOR UNIT Indoor unit service manual MSZ SF VE Series OBH600 PARTS CATALOG OBB629 MUZ SF25VE MUZ SF25VEH MUZ SF35VE MUZ SF35VEH MUZ SF42VE MUZ SF42VEH MUZ SF25VE E1 MUZ SF42VE E1 MUZ SF25VE E2 MUZ SF42VE E2 MUZ SF25VEH E1 MUZ SF42VEH E1 MUZ SF35VE E1 ...

Страница 2: ... touch the hot or cold areas in the refrigeration cycle When the repair or the inspection of the circuit needs to be done without turning off the power exercise great caution not to touch the live parts Use the specified refrigerant only 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 re...

Страница 3: ...F35VEH E1 MUZ SF42VE E1 MUZ SF42VEH E1 MUZ SF50VE E1 MUZ SF50VEH E1 1 New model MUZ SF25VE E1 MUZ SF25VE E2 MUZ SF35VE E1 MUZ SF35VE E2 MUZ SF42VE E1 MUZ SF42VE E2 1 Condenser net has been changed Material Plastic Steel wire TECHNICAL CHANGES 1 OBH629A ...

Страница 4: ...MUZ SF25VE MUZ SF25VEH MUZ SF35VE MUZ SF35VEH MUZ SF42VE MUZ SF42VEH PART NAMES AND FUNCTIONS 2 ACCESSORIES MODELS MUZ SF25VE MUZ SF35VE MUZ SF42VE MUZ SF50VE Drain socket 1 MUZ SF50VE MUZ SF50VEH Piping Air outlet Drain outlet Air inlet back and side Drain hose OBH629A ...

Страница 5: ...il Model L 0 32 FV50S 0 27 FV50S 0 35 FV50S Fan motor Model RC0J50 FA RC0J60 BD Current 1 Cooling A 0 20 0 24 0 30 0 84 Heating 0 29 0 30 0 28 0 93 Dimensions W H D mm 800 550 285 840 880 330 Weight kg 31 31 35 55 Special remarks Dehumidification Cooling L h 0 3 1 0 1 7 2 2 Air flow 1 Cooling High m3 h 1 698 1 956 1 806 2 868 Low 1 698 1 806 1 038 1 602 Heating High 2 064 2 178 2 016 2 778 Med 1 6...

Страница 6: ...or PTC64 PTC65 33 Ω Terminal block TB 5 P Relay X63 3 A 250 V X64 20 A 250 V X66 3 A 250 V 3 A 250 V 3 A 250 V 3 A 250 V X69 10A 230V R V coil 21S4 220 240 V AC Heater protector 26H Open 45 C Open 45 C Open 45 C Open 45 C 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 0dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES...

Страница 7: ...C 10 51 MUZ SF42VE MUZ SF42VEH 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 COOLING FUNCTION SPL dB A LINE HEATING 52 NC 10 52 MUZ SF50VE MUZ SF50VEH Test conditions Cooling Dry bulb temperature 35 C Heating Dry bulb temperature 7 C Wet bulb temperature 6 C OUTDOO...

Страница 8: ... flared ø9 52 4 3 3 5 2 holes 10 X 21 REQUIRED SPACE 100 mm or more 350 mm or more 200 mm or more 100 mm or more 100 mm or more Drain hole ø42 MUZ SF25 35 42VE Drain hole ø33 MUZ SF25 35 42VEH MUZ SF50VE MUZ SF50VEH OUTLINES AND DIMENSIONS 5 417 5 40 42 Drain hole 175 500 330 50 Air in Air out 2 holes 10 21 360 840 109 81 880 452 Service panel 99 5 164 5 195 3 5 4 4 Liquid refrigerant pipe joint R...

Страница 9: ...9 WIRING DIAGRAM 6 MUZ SF25VE MUZ SF35VE MUZ SF25VEH MUZ SF35VEH OBH629A ...

Страница 10: ...10 MUZ SF42VE MUZ SF50VE MUZ SF42VEH MUZ SF50VEH OBH629A ...

Страница 11: ...y tube ø3 0 ø2 0 240 Outdoor heat exchanger temperature thermistor RT68 Muffler REFRIGERANT SYSTEM DIAGRAM 7 Unit mm MUZ SF42VE MUZ SF42VEH Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve with strainar Stop valve Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating Refrigerant pipe ø9 52 w...

Страница 12: ... ø2 0 200 4 Max Length A Max Height difference B Indoor unit Outdoor unit MAX REFRIGERANT PIPING LENGTH and MAX HEIGHT DIFEFRENCE Refrigerant piping m Piping size O D mm Max Length A Max Height difference B Gas Liquid MUZ SF25 35 42 20 12 9 52 6 35 MUZ SF50 30 15 12 7 ADDITIONAL REFRIGERANT CHARGE R410A g Model Outdoor unit precharged 7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 m 20 m MUZ SF25 700 0 3...

Страница 13: ...st 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 Open windows and doors of room 5 Press the EMERGENCY OPERATION switch once t...

Страница 14: ...2VE MUZ SF42VEH MUZ SF25VEH MUZ SF35VE 23 8 21 9 20 1 18 3 16 5 14 6 12 8 11 0 9 1 7 3 MUZ SF35VEH MUZ SF25VE Outdoor intake air Wet bulb temperature C 20 15 10 5 0 5 10 15 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 Heating capacity at Rated frequency Capacity correction factor 15 20 26 Indoor intake air Dry bulb temperature Indoor air Dry bulb temperature difference C 20 3 18 8 17 2 15 6 14 1 12 5 1...

Страница 15: ...MUZ SF50VEH Correction of Heating input Capacity correction factors The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of compressor Hz The operational frequency of co...

Страница 16: ...ation TEST RUN OPERATION Refer to 8 3 8 4 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT Dry bulb temperature C Relative humidity 20 50 25 60 30 70 8 3 HOW TO OPERATE FIXED FREQUENCY OPERATION Test run operation 1 Press EMERGENCY OPERATION switch to start COOL or HEAT mode COOL Press once HEAT Press twice 2 Test run operation starts and continues to operate for 30 minutes 3 Compressor operates at r...

Страница 17: ...nt MUZ SF42VE MUZ SF42VEH MUZ SF50VE MUZ SF50VEH 0 5 10 15 20 25 1 5 2 0 2 5 3 0 0 5 10 15 20 25 4 0 4 5 5 0 5 5 6 0 0 5 10 15 20 25 2 5 3 0 3 5 4 0 0 5 10 15 20 25 4 0 4 5 5 0 5 5 6 0 Ambient temperature C Outdoor current A Ambient temperature C Outdoor current A Ambient temperature C Outdoor current A Ambient temperature C Outdoor current A MUZ SF35VE MUZ SF35VEH MUZ SF25VE MUZ SF25VEH Outdoor u...

Страница 18: ...3 0 74 594 27 24 3 35 2 08 0 62 546 3 23 2 00 0 62 576 3 15 1 95 0 62 594 3 05 1 89 0 62 624 27 26 3 45 1 73 0 50 576 3 35 1 68 0 50 606 3 30 1 65 0 50 624 3 20 1 60 0 50 642 28 18 2 94 2 94 1 00 480 2 81 2 81 1 00 504 2 70 2 70 1 00 528 2 60 2 60 1 00 552 28 20 3 06 2 76 0 90 504 2 94 2 64 0 90 534 2 85 2 57 0 90 546 2 75 2 48 0 90 570 28 22 3 19 2 49 0 78 522 3 08 2 40 0 78 555 3 00 2 34 0 78 57...

Страница 19: ... 0 74 672 2 38 1 76 0 74 696 27 24 2 88 1 78 0 62 660 2 70 1 67 0 62 690 2 55 1 58 0 62 720 27 26 3 03 1 51 0 50 684 2 85 1 43 0 50 714 2 68 1 34 0 50 744 28 18 2 45 2 45 1 00 588 2 25 2 25 1 00 624 2 08 2 08 1 00 648 28 20 2 58 2 32 0 90 612 2 40 2 16 0 90 642 2 23 2 00 0 90 678 28 22 2 73 2 13 0 78 636 2 55 1 99 0 78 672 2 38 1 85 0 78 696 28 24 2 88 1 90 0 66 660 2 70 1 78 0 66 690 2 55 1 68 0 ...

Страница 20: ...7 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 27 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 28 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 28 20 4 29 3 34 0 78 907 4 11 3 21 0 78 961 3 99 3 11 0 78 983 3 85 3 00 0 78 1026 28 22 4 46 2 95 0 66 940 4 31 2 84 0 66 999 4 20 2 77 0 66 1026 4...

Страница 21: ... 1210 3 33 2 06 0 62 1253 27 24 4 03 2 01 0 50 1188 3 78 1 89 0 50 1242 3 57 1 79 0 50 1296 27 26 4 24 1 61 0 38 1231 3 99 1 52 0 38 1285 3 75 1 42 0 38 1339 28 18 3 43 3 09 0 90 1058 3 15 2 84 0 90 1123 2 91 2 61 0 90 1166 28 20 3 61 2 81 0 78 1102 3 36 2 62 0 78 1156 3 12 2 43 0 78 1220 28 22 3 82 2 52 0 66 1145 3 57 2 36 0 66 1210 3 33 2 19 0 66 1253 28 24 4 03 2 17 0 54 1188 3 78 2 04 0 54 124...

Страница 22: ...1327 27 24 5 63 2 36 0 42 1219 5 42 2 28 0 42 1286 5 29 2 22 0 42 1327 5 12 2 15 0 42 1394 27 26 5 80 1 74 0 30 1286 5 63 1 69 0 30 1353 5 54 1 66 0 30 1394 5 38 1 61 0 30 1434 28 18 4 94 4 05 0 82 1072 4 73 3 87 0 82 1126 4 54 3 72 0 82 1179 4 37 3 58 0 82 1233 28 20 5 15 3 60 0 70 1126 4 94 3 45 0 70 1193 4 79 3 35 0 70 1219 4 62 3 23 0 70 1273 28 22 5 36 3 11 0 58 1166 5 17 3 00 0 58 1240 5 04 ...

Страница 23: ...1501 3 99 2 15 0 54 1554 27 24 4 83 2 03 0 42 1474 4 54 1 91 0 42 1541 4 28 1 80 0 42 1608 27 26 5 08 1 52 0 30 1528 4 79 1 44 0 30 1595 4 49 1 35 0 30 1662 28 18 4 12 3 38 0 82 1313 3 78 3 10 0 82 1394 3 49 2 86 0 82 1447 28 20 4 33 3 03 0 70 1367 4 03 2 82 0 70 1434 3 74 2 62 0 70 1514 28 22 4 58 2 66 0 58 1420 4 28 2 48 0 58 1501 3 99 2 31 0 58 1554 28 24 4 83 2 22 0 46 1474 4 54 2 09 0 46 1541...

Страница 24: ...1643 27 24 6 70 2 68 0 40 1511 6 45 2 58 0 40 1594 6 30 2 52 0 40 1643 6 10 2 44 0 40 1726 27 26 6 90 1 93 0 28 1594 6 70 1 88 0 28 1677 6 60 1 85 0 28 1726 6 40 1 79 0 28 1776 28 18 5 88 4 70 0 80 1328 5 63 4 50 0 80 1394 5 40 4 32 0 80 1461 5 20 4 16 0 80 1527 28 20 6 13 4 17 0 68 1394 5 88 4 00 0 68 1477 5 70 3 88 0 68 1511 5 50 3 74 0 68 1577 28 22 6 38 3 57 0 56 1444 6 15 3 44 0 56 1536 6 00 ...

Страница 25: ... 1859 4 75 2 47 0 52 1926 27 24 5 75 2 30 0 40 1826 5 40 2 16 0 40 1909 5 10 2 04 0 40 1992 27 26 6 05 1 69 0 28 1892 5 70 1 60 0 28 1975 5 35 1 50 0 28 2058 28 18 4 90 3 92 0 80 1627 4 50 3 60 0 80 1726 4 15 3 32 0 80 1793 28 20 5 15 3 50 0 68 1693 4 80 3 26 0 68 1776 4 45 3 03 0 68 1876 28 22 5 45 3 05 0 56 1760 5 10 2 86 0 56 1859 4 75 2 66 0 56 1926 28 24 5 75 2 53 0 44 1826 5 40 2 38 0 44 190...

Страница 26: ... 2 68 906 3 16 999 3 68 1071 4 20 1123 4 68 1154 5 20 1185 MUZ SF42VE MUZ SF42VEH CAPACITY 5 4 kW INPUT 1580 W INDOOR DB C OUTDOOR WB C 10 5 0 5 10 15 20 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 3 40 1027 4 10 1232 4 81 1390 5 51 1501 6 21 1596 6 86 1643 7 56 1675 21 3 24 1106 3 89 1311 4 59 1454 5 24 1564 5 94 1643 6 59 1691 7 26 1754 26 2 92 1185 3 62 1390 4 27 1533 4 97 1643 5...

Страница 27: ...the compressor starts up OFF The fan motor turns OFF 15 seconds after the compressor has stopped running 9 3 RELATION BETWEEN MAIN SENSOR AND ACTUATOR Sensor Purpose Actuator Compressor LEV Outdoor fan motor R V coil Indoor fan motor Defrost heater Discharge temperature thermistor Protection Indoor coil temperature thermistor Cooling Coil frost prevention Heating High pressure protec tion Defrost ...

Страница 28: ...ng 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 horizontal vane is closed turn OFF the breaker and or disconnect the power plug 2 Be sure to turn OFF the power supply before removing the front panel the cabinet the top panel and the electronic control P C board 3 When removing the electrical...

Страница 29: ...door 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 outdoor unit is abnormal The indoor unit is abnormal Check the blinking pattern and confirm the abnormal point with the indoor unit failure mode table Refer to indoor unit service manual Make sure to check at least two consecutive blinking cycles 2 Releasin...

Страница 30: ...ode recall function Release the failure mode recall function by the following procedures Turn OFF the power supply and turn it ON again Press RESET button of the remote controller Repair the failure 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 failur...

Страница 31: ...rature thermistor reads 100 C or less 3 minutes later Check the refrigerant circuit and refrigerant amount Refer to 11 5 Check of LEV 6 time flash 2 5 seconds OFF High pressure Temperature indoor coil thermistor exceeds 70 C in HEAT mode Temperature defrost thermistor exceeds 70 C in COOL mode Check the refrigerant circuit and refrigerant amount Check the stop valve 7 time flash 2 5 seconds OFF Fi...

Страница 32: ...s distorted Reconnect connector of compressor Refer to 11 5 How to check in verter compressor 13 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 11 5 Check of outdoor fan motor Refer to 11 5 Check of inverter P C board 14 12 time flash 2 5 seconds OFF Each phase current of compressor Each phase current o...

Страница 33: ... between terminals using a tester Temperature 10 40 C Normal Ω MUZ SF25 MUZ SF35 MUZ SF42 MUZ SF50 U V U W V W 1 20 1 72 1 36 1 93 1 52 2 17 0 78 1 11 Outdoor fan motor Measure the resistance between lead wires using a tester Temperature 10 40 C Color of lead wire Normal Ω MUZ SF25 35 42 MUZ SF50 RED BLK BLK WHT WHT RED 29 42 12 17 R V coil 21S4 Measure the resistance using a tester Temperature 10...

Страница 34: ...heck of open phase C Check of compressor With the connector between the compressor and the power module disconnected activate the inverter and check if the in verter is normal by measuring the voltage balance 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 t...

Страница 35: ...ier for about 20 minutes Do not recover refrigerant gas while heating Heating part Connect the compressor and activate the inverter Then measure the time until the inverter stops due to over current Operation method Start heating or cooling operation by pressing EMERGENCY OPERATION switch on the indoor unit TEST RUN OPERATION Refer to 8 3 Measurement Measure the time from the start of compressor t...

Страница 36: ...asure the resistance of thermistor First of all measure the resistance of R V coil to check if the coil is defective Refer to 11 4 In case CN721 is disconnected or R V coil is open voltage is generated between the terminal pins of the connector although no signal is being transmitted to R V coil Check if CN721 is connected Is there 230 VAC between CN721 and on the inverter P C board 3 minutes afte...

Страница 37: ...easure the voltage of CN931 Between 1 and 5 Between 2 and 5 Between 3 and 5 Does the voltage between each terminal become 5 and 0 VDC repeatedly Does the outdoor fan motor rotate smoothly Replace the outdoor fan motor Replace the inverter P C board Yes Yes No Fixed to either 5 or 0 VDC No No Yes Disconnect the connectors CN931 and CN932 from the inverter P C board Check the connection between the ...

Страница 38: ...NDICATOR lamp on the indoor unit light up Dose LED on the inverter P C board light up or flash Refer to 11 6 1 No Replace the inverter P C board Is there voltage 260 370 VDC between DB61 and DB61 on the inverter P C board Refer to 11 6 1 No Check the electric parts in main circuit Yes Yes No Disconnect the connector between compressor and power module Turn ON power supply and press EMERGENCY OPERA...

Страница 39: ...the voltage by an analog tester Properly fix the LEV coil to the expansion 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 11 4 Do you hear the expansion valve click click Do you feel the expansion valve vibrate on touching it Turn ON the power s...

Страница 40: ...oor fan motor If the connection is poor make it correct Operate the outdoor unit by starting EMERGENCY OPERATION Check the LED indication on the in verter P C board Does the LED flash 10 times Replace the inverter P C board Check the corresponding parts following LED indication Refer to 11 3 Yes No Yes 10 time flash No L Check of inverter P C board OBH629A ...

Страница 41: ...ctronic control P C board No Does the indoor OPERATION INDICATOR lamp left blink continuously 6 minutes after the emergency operation starts No Does the outdoor LED light up Replace the indoor electronic control P C board Replace the indoor power P C board Yes Yes Does the outdoor LED blink 6 times Yes Confirm that the thermostat is OFF and wiring is not loose No Does DC 6V or more occur between i...

Страница 42: ...he installation condition combination of specific conditions such as antennas or wiring Check the following 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 indoor outd...

Страница 43: ...emperature thermistor and circuit of defrost heater securely connected to connectors Is there 230 VAC between CN722 and on the inverter P C board Refer to 11 6 1 Not the problem of the inverter P C board Replace the inverter P C board No Yes In HEAT mode for more than 5 minutes let the ambient temperature thermistor continue to read 5 C or below and let the defrost thermistor continue to read 1 C ...

Страница 44: ...ST POINT DIAGRAM AND VOLTAGE Fin temperature thermistor RT64 CN642 Ambient temperature thermistor RT65 CN643 Discharge temperature thermistor RT62 CN641 Defrost thermistor RT61 CN641 DB61 260 370 VDC Front side of unit 230 VAC Smoothing capacitor C62 Output to drive compressor LDU LDV LDW Fuse F701 T3 15AL250V Smoothing capacitor C61 Smoothing capacitor C63 MUZ SF42 50 Fuse F901 T3 15AL250V R V co...

Страница 45: ... 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 Back panel Service panel Screws of the top panel Screws of the cabinet Screws of the top panel Screw of the service panel Direction to remove Screws of the cabinet Hooks Terminal with locking mechanism Detaching...

Страница 46: ... 2 Disconnect the following connectors Inverter P C board CN721 R V coil 3 Remove the R V coil 4 Removing the discharge temperature thermistor defrost thermistor outdoor heat exchanger tempera ture thermistor and ambient temperature thermistor 1 Remove the cabinet and panels Refer to 1 2 Disconnect the lead wire to the reactor and the following con nectors Inverter P C board CN641 Defrost thermist...

Страница 47: ...and panels Refer to 1 2 Remove the inverter assembly Refer to 2 3 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm2 0 MPa 4 Detach the brazed part of the suction and the discharge pipe connected with compressor 5 Remove the nuts of compressor legs 6 Remove the compressor 7 Detach the brazed part of pipes connected with 4 way valve Defr...

Страница 48: ...6 Remove the valve cover 7 Disconnect the power supply and indoor outdoor connect ing wire 8 Remove the screws of the cabinet 9 Remove the cabinet 10 Remove the screws of the back panel 11 Remove the back panel Photo 1 Photo 2 Screws of the cabinet Screws of the top panel Screws of the top panel Screw of the back panel Screws of the cabinet Screws of the cabinet Screws of the service panel Screw o...

Страница 49: ... back panel 6 Remove the inverter assembly 7 Remove the screw of the earth wire screw of the P C board cover and screws of the terminal block support 8 Remove the heat sink support from the P C board support 9 Remove the screw of the inverter P C board and the inverter P C board from the P C board support Photo 3 Photo 4 Photo 5 3 Removing R V coil 1 Remove the cabinet and panels Refer to 1 2 Disc...

Страница 50: ...el cabinet and service panel Refer to 1 2 Disconnect the following connectors Inverter P C board CN931 and CN932 Fan motor 3 Remove the propeller nut 4 Remove the propeller 5 Remove the screws fixing the fan motor 6 Remove the fan motor 6 Removing the compressor and 4 way valve 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 3 Remove the inverter asse...

Страница 51: ...51 OBH629A ...

Страница 52: ...OKYO 100 8310 JAPAN Copyright 2012 MITSUBISHI ELECTRIC CORPORATION Distributed in Aug 2013 No OBH629 REVISED EDITION A Distributed in Nov 2012 No OBH629 Made in Japan New publication effective Aug 2013 Specifications are subject to change without notice ...

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