Mitsubishi Electric Mr.Slim MUZ-GC25NA - C1 Скачать руководство пользователя | Manualshive

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44

Check the outdoor fan motor.

(Refer to 9-5. .)

Is the fuse (F901) blown on the in-

verter P.C. board?

Check the connection of the connectors

(CN931, CN932) of the outdoor fan mo-

tor.

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

fl

ash 10 times?

Replace the inverter P.C. board.

Check the corresponding parts

following LED indication.

(Refer to 9-3.)

Yes

No

Yes

(10-time

fl

ash)

No

MUZ-GC50NA-

C2

L Check of inverter P.C. board

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Содержание Mr.Slim MUZ-GC25NA - C1

Страница 1: ...BLY INSTRUCTIONS 54 Models SPLIT TYPE AIR CONDITIONERS MUZ GC25NA C1 MUZ GC35NA C1 MUZ GC35NA C2 MUZ GC50NA C1 MUZ GC50NA C2 MUZ GC60NA C1 MUZ GC60NA C2 MUZ GC71NA C1 NOTE RoHS compliant products have G mark on the spec name plate HFC utilized R410A No OBH482 REVISED EDITION C OUTDOOR UNIT Indoor unit service manual MSZ GC NA Series OBH481 MUZ GC25 35NA PARTS CATALOG OBB482 Please void OBH482 REVI...

Страница 2: ...circuit has been changed MUZ GC50NA C1 MUZ GC50NA C2 1 Compressor has been changed SNB130FLDH1 SNB130FGBH 2 Outdoor electrical parts have been changed 3 Refrigerant circuit has been changed MUZ GC35NA C1 MUZ GC35NA C2 1 Outdoor electrical parts have been changed 2 Compressor has been changed KNB073FGDH KNB073FGDHC Revision B MUZ GC50NA C2 has been added Revision C MUZ GC35NA C2 has been added ...

Страница 3: ...3 Air outlet Drain outlet Piping Drain hose Air inlet MUZ GC25NA MUZ GC35NA Piping Air outlet Air inlet back and side Drain hose Drain outlet MUZ GC50NA MUZ GC60NA MUZ GC71NA 1 PART NAMES AND FUNCTIONS ...

Страница 4: ...1 KNB073FGDH C2 KNB073FGDHC Output W 500 550 Current 1 A 3 35 3 91 4 73 4 61 Fan motor Model RA6V21 BD Current A 0 29 Dimensions W H D mm 684 540 255 Weight kg 26 Special remarks Dehumidification h 1 4 2 Air flow High Low m3 h 1 860 Sound level dB 47 48 48 49 Fan speed rpm 830 Fan speed regulator 1 Refrigerant filling capacity R410A kg 0 75 Refrigeration oil Model NEO22 NOTE Test conditions are ba...

Страница 5: ...FLDH1 C1 SNB130FLDH1 TNB220FMCHT C2 SNB130FGBH C2 SNB130FGBH Output W 850 1 300 Current 1 A 7 59 7 55 9 41 8 80 11 11 11 04 Fan motor Model RC0J60 AA Current 1 A 0 32 Dimensions W H D mm 840 850 330 Weight kg 53 58 Special remarks Dehumidification h 1 7 1 6 2 5 Air flow 1 m3 h 2 940 1 650 2 940 2 210 2 940 1 650 2 940 2 210 2 940 1 650 2 940 2 210 Sound level 1 High Low dB A 52 51 55 53 53 51 55 5...

Страница 6: ... X63 3 A 250 V X64 20 A 250 V R V coil 21S4 AC 220 240 V Outdoor fan motor thermal fuse Open 126 C RA6V21 BD IGBT TR821 30 A 600 V Model Item MUZ GC50NA C1 MUZ GC60NA MUZ GC71NA Current transformer CT1 2 ETQ19Z68AY CT61 ETQ19Z53AY Smoothing capacitor CB1 2 3 560 μF 450 V Fuse F64 250 V 2 A F801 250 V 3 15 A F911 250 V 1 A Expansion valve coil LEV DC 12 V Intelligent power module IPM PS21244 A HC93...

Страница 7: ...250V F701 F801 F901 T3 15AL250V Intelligent power module IPM 20 A 600 V Expansion valve coil LEV DC 12 V Reactor L61 23 0 mH Current detecting resistor R61 R62 180 mΩ 5 W 2 elements R825 25 mΩ 5 W R937A R937B 1 1 Ω 2 W Current limiting PTC thermistor PTC64 PTC65 33 Ω Terminal block TB1 TB2 3 P Relay X63 3 A 250 V X64 20 A 250 V R V coil 21S4 AC 220 240 V IGBT TR821 30 A 600 V ...

Страница 8: ...ared ø6 35 MUZ GC50 60 ø9 52 MUZ GC71 REQUIRED SPACE Drain holes ø33 20 8 144 6 89 6 255 145 5 Service panel Service port Air out Liquid refrigerant pipe joint Refrigerant pipe flared ø6 35 Gas refrigerant pipe joint Refrigerant pipe flared ø9 52 4 3 4 0 REQUIRED SPACE Basically open 100 mm or more without any obstruction in front and on both sides of the unit 350 mm or more 100 mm or more 100 mm ...

Страница 9: ...9 MUZ GC25NA MUZ GC35NA 4 WIRING DIAGRAM ...

Страница 10: ...10 MUZ GC50NA C1 MUZ GC60NA C1 ...

Страница 11: ...11 MUZ GC50NA C2 ...

Страница 12: ...12 MUZ GC60NA C2 ...

Страница 13: ...13 MUZ GC71NA ...

Страница 14: ...C25NA MUZ GC35NA MUZ GC50NA C1 Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve with service port Capillary tube ø3 6ø 2 4 50 Capillary tube ø1 8ø 0 6 1000 Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating Refrigerant pipe ø12 7 with heat insulator Refrigerant pipe ø6 35 with ...

Страница 15: ...er Outdoor heat exchanger temperature thermistor RT68 Ambient temperature thermistor RT65 Strainer 100 MUZ GC50NA C2 Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve with strainer Stop valve with service port Capillary tube ø3 6ø 2 4 50 Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating R...

Страница 16: ...er Outdoor heat exchanger temperature thermistor RT68 Strainer 100 Strainer 100 Ambient temperature thermistor RT65 MUZ GC60NA C2 Unit mm Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve with service port Capillary tube ø3 6ø 2 4 50 Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in he...

Страница 17: ...m 12 m 13 m 14 m 15 m 20 m MUZ GC25NA MUZ GC35NA 750 0 0 0 90 120 150 180 210 240 270 300 450 Calculation X g 30 g m Refrigerant piping length m 5 Model Outdoor unit precharged Refrigerant piping length one way 7 m 10 m 15 m 20 m 25 m 30 m MUZ GC50NA 1 500 0 60 160 260 360 460 MUZ GC60NA 1 800 Calculation X g 20 g m Refrigerant piping length m 7 Model Outdoor unit precharged Refrigerant piping len...

Страница 18: ...of wet and dry bulb 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 filte...

Страница 19: ...mpressor Correction of Cooling total input The operational frequency of compressor Correction of Heating total input The operational frequency of compressor Correction of Heating capacity The operational frequency of compressor MUZ GC50NA 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 0 50 100 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 Corr...

Страница 20: ...tion of Cooling total input The operational frequency of compressor Correction of Heating total input The operational frequency of compressor Correction of Heating capacity The operational frequency of compressor MUZ GC60NA 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 6 3 TEST RUN OPERATION How to operate fixed frequency operation ...

Страница 21: ...ature C Ambient humidity 2 2 5 3 3 5 4 A MPa Gauge MPa Gauge 0 2 18 32 15 20 50 25 60 30 70 35 C Ambient temperature C Ambient humidity 2 3 4 5 6 MUZ GC35NA MUZ GC25NA MUZ GC35NA MUZ GC50NA MUZ GC71NA MUZ GC60NA A MUZ GC50NA 0 6 0 7 0 8 0 9 1 0 1 1 1 2 MUZ GC71NA 0 6 0 7 0 8 0 9 1 0 1 1 1 2 6 7 8 9 10 11 12 7 8 9 10 11 12 13 MUZ GC60NA A A Ambient temperature C Ambient humidity 18 32 15 20 50 25 6...

Страница 22: ...temperature C MUZ GC25NA MUZ GC35NA A A A A 3 0 2 5 2 0 1 5 1 0 0 5 0 0 2 5 10 15 20 25 C 4 0 3 5 3 0 2 5 2 0 1 5 1 0 2 5 10 15 20 25 C Ambient temperature C MUZ GC50NA 6 5 6 0 5 5 5 0 4 5 4 0 3 5 Ambient temperature C MUZ GC60NA 2 5 7 10 15 20 25 C Ambient temperature C MUZ GC71NA 14 0 13 0 12 0 11 0 10 0 9 0 8 0 2 5 7 10 15 20 25 C A 5 10 15 20 25 C 4 0 5 0 6 0 7 0 8 0 2 Outdoor unit current ...

Страница 23: ... ACTUATOR MUZ GC25 35 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 protec tion Heating Defrosting Fin temperature thermistor Protection MUZ GC50 60 71 Sensor Purpose Actuator Comp...

Страница 24: ...lity indication is flashing on and off before starting service work 2 Before servicing check that the connector and terminal are connected properly 3 If the electronic control P C board is supposed to be defective check the copper foil pattern for disconnection and the components for bursting and discoloration 4 Refer to 9 2 and 9 3 9 1 CAUTIONS ON TROUBLESHOOTING 1 Before troubleshooting check th...

Страница 25: ...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 Releasing the failure mode 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 con...

Страница 26: ...abnormal Check the blinking pattern and confirm the abnormal point with the out door unit failure mode table 9 2 3 Make sure to check at least two consecutive blinking cycles 2 Releasing the failure mode 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 defective...

Страница 27: ...ck 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 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...

Страница 28: ...uring operation Check around outdoor unit Check outdoor unit air passage Refer to 9 5 Check of outdoor fan motor P C board temperature 4 times Goes out The P C board temperature exceeds 70 C during operation 8 time flash Outdoor fan motor Lighting Lighting Failure occurs continuously 3 times within 30 seconds after the fan gets started Refer to 9 5 Check of outdoor fan motor 9 time flash Nonvolati...

Страница 29: ... 70 C in HEAT mode Temperature defrost thermistor exceeds 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 75 80 C or temperature of P C board temperature thermistor on the inverter P C board e...

Страница 30: ... time flash 2 5 seconds OFF Compressor synchronous abnormality The waveform of compressor current is distorted Reconnect connector of compressor Refer to 9 5 How to check inverter compressor 12 12 time flash 2 5 seconds OFF Each phase current of compressor Each phase current of compressor cannot be detected normally Refer to 9 5 How to check inverter compressor 13 13 time flash 2 5 seconds OFF DC ...

Страница 31: ...PM protection Over current is detected after 30 minutes of compressor start up Reconnect compressor connector Refer to 9 5 How to check in verter compressor Check the stop valve Check the power module PAM module Lock protection Over current is detected within 30 minutes of compressor start up 11 3 times Goes out Discharge temperature protection Discharge temperature exceeds 116 C during operation ...

Страница 32: ...ion The discharge temperature exceeds 100 C during operation Check refrigerant circuit and refriger ant amount Refer to 9 5 Check of LEV Refer to 9 5 Check of outdoor thermistors 23 4 times Lighting Low discharge tempera ture protection The frequency of the compressor is kept 80 Hz or more and the dis charge temperature is kept under 39 C for more than 20 minutes Refer to 9 5 Check of LEV Check re...

Страница 33: ...essor current is distorted Reconnect connector of compres sor Refer to 9 5 How to check in verter compressor 12 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 9 5 Check of outdoor fan motor Refer to 9 5 Check of inverter P C board 13 12 time flash 2 5 seconds OFF Each phase current of compressor Each ph...

Страница 34: ...rd the chart of thermistor Compressor MC Measure the resistance between terminals using a tester Winding temperature 20 40 C Normal GC25 GC35 U V U W V W 1 58 2 03 Ω 1 43 1 84 Ω Outdoor fan motor MF INNER FUSE 126 2 2 C CUT OFF Measure the resistance between lead wires using a tester Part temperature 20 40 C Color of the lead wire Normal WHT BLK 212 272 Ω BLK RED 234 300 Ω R V coil 21S4 Measure th...

Страница 35: ...istor Fin temperature thermistor RT64 Compressor MC Measure the resistance between terminals using a tester Winding temperature 10 40 C Normal GC50 60NA C1 GC50 60NA C2 GC71 0 40 0 49 Ω 0 86 1 06 Ω 1 29 1 49 Ω Outdoor fan motor MF Measure the resistance between lead wires using a tester Part temperature 10 40 C Color of lead wire Normal RED BLK 13 4 16 4 Ω BLK WHT WHT RED R V coil Measure the resi...

Страница 36: ...er the outdoor fan starts running wait for 1 minute or more before measuring 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 outdoor unit and measure the compressor winding resistance betwee...

Страница 37: ...ter 3 During this check LED of inverter P C board flashes 9 times Refer to 9 6 1 Measure AC voltage between the lead wires at 3 points C Check of compressor MUZ GC25 35NA MUZ GC50NA C2 Refer to 9 5 Check of compressor operation time Does the compressor operate continuously OK No Yes Refer to 9 5 Check of compressor winding Is the compressor normal Replace the compressor No Yes Refer to 9 5 Check o...

Страница 38: ...losed valve Normal 0 second 1 second 2 seconds 10 seconds 10 minutes Judgement F Check of compressor start failure After the compressor is heated with a drier does the compressor start 1 Replace the compressor Compressor start failure Activate pre heat control Refer to 8 2 PRE HEAT CONTROL SETTING No Yes Does the compressor run for 10 seconds or more after it starts Check the refrigerant circuit C...

Страница 39: ...the unit operate for 10 minutes or more without showing thermistor abnormality OK Cause is poor contact Yes Yes Disconnect the connector of thermistor in the outdoor P C board see below table and measure the resistance of thermistor H Check of R V coil First of all measure the resistance of R V coil to check if the coil is defective Refer to 9 4 In case CN721 is not connected or R V coil is open v...

Страница 40: ... coil No Replace the R V coil Replace the 4 way valve Replace the noise filter P C board Yes Replace the outdoor electronic control P C board Yes Cooling operation does not work Is there voltage of 220 230 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 p...

Страница 41: ...ce the outdoor fan motor Yes Yes No Fixed to either 5 or 0 VDC No No Yes MUZ GC50 60 71NA Replace the outdoor electronic control P C board Check the resistance of fan motor Refer to 9 4 Is the resistance of fan motor normal Replace the outdoor fan motor Disconnect the connector CN771 on the power P C board Disconnect the connector CN61 between compressor and power transistor module Turn ON the pow...

Страница 42: ...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 220 230 VAC in the power supply terminal block Check the connecting of parts of main power supply circuit Check the power supply cable Turn ON power supply Is the output voltage from th...

Страница 43: ...l or abnormal condition a short beep is emitted once the signal is received Measure each voltage between connector pins of CN724 on the inverter P C board 1 Pin Pin 2 Pin Pin 3 Pin Pin 4 Pin Pin Is there about 3 5 VAC between each NOTE Measure the voltage by an analog tester Properly fix the LEV coil to the expansion valve Replace the LEV coil Replace the expansion valve Is LEV coil properly fixed...

Страница 44: ... fan mo tor 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 9 3 Yes No Yes 10 time flash No MUZ GC50NA C2 L Check of inverter P C board ...

Страница 45: ...Turn OFF the power supply Remove the short circuit between out door terminal block S2 and S3 Turn ON the power supply Is there amplitude of 10 to 20 V DC between indoor terminal block S2 and S3 Confirmation of serial signal Is there rated voltage between indoor terminal block S1 and S2 Confirmation of power voltage Yes No Is there any error of the in door outdoor connecting wire such as the damage...

Страница 46: ... 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 to the residual voltage of smoothing capacitor Turn OFF the power supply Remove the short circuit between outdoor terminal block S2 and S3 Turn ON the power supply Is there amplitude of 10 to 20 VDC between outdoor terminal block...

Страница 47: ...te after the outdoor unit power supply was turned OFF Check the resistance between each terminal Is HPS protection displayed immediately after compressor starts Replace HPS Replace the outdoor electronic control P C board Normal Infinity No 0 Ω Yes Reconnect CN681 Turn ON power supply to the indoor and outdoor unit 3 minutes later start EMERGENCY OPERATION ...

Страница 48: ...or the 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 ...

Страница 49: ... C board MUZ GC25NA MUZ GC35NA 9 6 TEST POINT DIAGRAM AND VOLTAGE Back side of unit Output to drive outdoor fan motor CN771 Fin temperature thermistor RT64 CN642 Discharge temperature thermistor RT62 CN641 Defrost thermistor RT61 CN641 LEV connector CN724 DB61 220 230V AC Jumper wire for change in defrost setting JS Front side of unit DB61 280V 370V DC Smoothing capacitor C62 Smoothing capacitor C...

Страница 50: ... of unit Fin temperature thermistor RT64 CN642 Ambient temperature thermistor RT65 CN643 Discharge temperature thermistor RT62 CN641 Defrost thermistor RT61 CN641 LEV connector CN724 DB61 DC 260 300 V Front side of unit AC 220 230 V Smoothing capacitor C62 Output to drive com pressor LDU LDV LDW Fuse F701 250 V 3 15 A Smoothing capacitor C61 Smoothing capacitor C63 Fuse F801 250 V 3 15 A Fuse F901...

Страница 51: ...ND power board CN781 CN795 12V DC pulse wave LEV 20 10 0 10 20 30 40 100 90 80 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 200 180 160 140 120 100 80 60 40 20 0 Resistance k Resistance k Temperature C Temperature C Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 Fin temperature thermistor RT64 0 10 20 30 40 50 60 70 80 90 100 110 ...

Страница 52: ...AC Input 220 230V AC Output CN901 To electronic control P C board MUZ GC50NA C1 MUZ GC60NA MUZ GC71NA F64 FUSE 2A 250V F911 FUSE 1A 250V 3 Noise filter P C board CN902 To power board CN903 To power board CN61 220 230V AC Output NR64 VARISTOR ...

Страница 53: ...V Connect to the earth 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 5V DC pulse wave 2 5 Zero cross signal 3 4 Not used 6 5 15V 7 5 15V Signal reception From electronic control P C board 5V DC pulse wave CN3 Fin temperature thermistor RT64 1 3 ...

Страница 54: ...cabinet 1 Slide the 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 Service panel Screws of the top panel Screws of the top panel Screw of the service panel Direction to remove Terminal wi...

Страница 55: ...he relay panel Photo 3 5 Remove the inverter assembly Photo 4 6 Remove the inverter P C board from the inverter assem bly Photo 3 Photo 4 Inverter assembly Photo 5 3 Removing R V coil 1 Remove the cabinet and panels Refer to 1 2 Remove the R V coil Photo 5 4 Removing the discharge temperature thermistor and defrost thermistor 1 Remove the cabinet and panels Refer to 1 2 Pull out the discharge temp...

Страница 56: ...nd 4 way valve 1 Remove the cabinet 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 MPa 0 kg cm2 4 Detach the welded 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 welded part of p...

Страница 57: ...ervice panel 5 Remove the top panel 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 3 Photo 1 Photo 2 Screw of the top panel Screws of the cabinet Screws of the cabinet Screw of the motor support Set screws of the back panel Screws...

Страница 58: ... C board 13 Remove the noise filter P C board from the inverter assem bly Photo 4 MUZ GC50NA C1 MUZ GC60 71 Photo 5 MUZ GC50NA C2 Photo 6 Inverter assembly MUZ GC50NA C2 MUZ GC50NA C2 3 Removing the inverter assembly inverter P C board 1 Remove the cabinet and panels Refer to 1 2 Disconnect the lead wire to the reactor and the following connectors Inverter P C board CN721 R V coil CN932 Fan motor ...

Страница 59: ...at exchanger temperature ther mistor CN663 Ambient temperature thermistor 4 Pull out the defrost thermistor from its holder Photo 8 5 Pull out the discharge temperature thermistor from its hold er Photo 7 6 Pull out the outdoor heat exchanger temperature thermistor from its holder Photo 8 7 Pull out the ambient temperature thermistor from its holder Photo 8 6 Removing outdoor fan motor 1 Remove th...

Страница 60: ...he suction and the discharge pipe connected with compressor Photo 11 6 Remove the compressor nuts 7 Remove the compressor 8 Detach the welded part of 4 way valve and pipe Photo 10 Photo 10 Photo 11 8 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 Photo 5 12 ...

Страница 61: ...61 ...

Страница 62: ...62 ...

Страница 63: ...63 ...

Страница 64: ...NEERING CO LTD Distributed in Aug 2008 No OBH482 REVISED EDITION C 6 Distributed in Jun 2008 No OBH482 REVISED EDITION B 6 Distributed in Nov 2007 No OBH482 REVISED EDITION A 6 Distributed in Mar 2007 No OBH482 6 Made in Japan New publication effective Aug 2008 Specifications subject to change without notice TM ...

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