Mitsubishi Electric MUZ-FH06NA Скачать руководство пользователя страница 55 | Manualshive

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11-2. MUZ-FH15NA MUZ-FH15NAH MUZ-FH18NA MUZ-FH18NAH

MUZ-FH18NA2 MUZ-FH18NAH2

NOTE:

Turn OFF the power supply before disassembly.

OPERATING PROCEDURE

PHOTOS

1. Removing the cabinet

(1) Remove the screws of the service panel.
(2) Remove the screws of the top panel.
(3) Remove the screw of the valve cover.
(4) Remove the service panel.
(5) Remove the screws fixing the conduit cover.
(6) Remove the conduit cover.
(7) Remove the screw of fixing the conduit plate.
(8) Remove the conduit plate.
(9) Remove the top panel.
(10) Remove the valve cover.
(11) Disconnect the power supply and indoor/outdoor connect-

ing wire.

(12) Remove the screws of the cabinet.
(13) Remove the cabinet.
(14) Remove the screws of the back panel.
(15) Remove the back panel.

Photo 2

Photo 1

Photo 3

Photo 4

55

Screws of the

cabinet

Screws of the top panel

Screws of the

cabinet

Screws of the top panel

Screw of the back panel

Screws of the

cabinet

Screws of the

service panel

Screw of the

valve cover

Screws of

the cabinet

Screws of the

back panel

Screws of the conduit cover

Screw of the conduit plate

OBH684C

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Содержание MUZ-FH06NA

Страница 1: ...MUZ FH09 12NA 1 MUZ FH18NA2 MUZ FH06NAH MUZ FH09 12NAH 1 and MUZ FH18NAH2 have been added MUZ FH06NA MUZ FH09NA MUZ FH09NA 1 MUZ FH12NA MUZ FH12NA 1 MUZ FH15NA MUZ FH18NA MUZ FH18NA2 MUZ FH06NAH MUZ FH09NAH MUZ FH09NAH 1 MUZ FH12NAH MUZ FH12NAH 1 MUZ FH15NAH MUZ FH18NAH MUZ FH18NAH2 CONTENTS 1 TECHNICAL CHANGES 2 2 PART NAMES AND FUNCTIONS 3 3 SPECIFICATION 4 4 OUTLINES AND DIMENSIONS 6 5 WIRING D...

Страница 2: ...as been modified The values of COP have been modified 10 TROUBLESHOOTING has been modified Revision B MUZ FH18NA and MUZ FH18NAH have been added MUZ FH09NA MUZ FH09NAH MUZ FH12NA MUZ FH12NAH MUZ FH15NA MUZ FH15NAH 1 New model MUZ FH18NA MUZ FH18NAH 1 New model MUZ FH06NA MUZ FH06NAH 1 New model MUZ FH09NA MUZ FH09NA 1 MUZ FH09NAH MUZ FH09NAH 1 MUZ FH12NA MUZ FH12NA 1 MUZ FH12NAH MUZ FH12NAH 1 1 Mo...

Страница 3: ...H12NA MUZ FH12NAH MUZ FH15NA MUZ FH15NAH MUZ FH18NA MUZ FH18NAH MUZ FH18NA2 MUZ FH18NAH2 Piping Air outlet Drain outlet Air inlet back and side Drain hose PART NAMES AND FUNCTIONS 2 Air outlet Drain outlet Piping Drain hose Air inlet back and side OBH684C ...

Страница 4: ...12 5 NAH 12 5 NAH 11 5 NAH 11 0 NAH 11 0 NAH2 11 0 COP Heating 1 4 68 4 50 4 20 4 06 3 46 Power supply V phase Hz 208 230 1 60 Max fuse size time delay A 15 20 Min circuit ampacity A 11 16 Fan motor F L A 0 50 0 93 Compressor Model SNB092FQAMT SNB140FQUMT SNB172FQKMT R L A 8 2 12 0 L R A 10 3 15 0 Refrigeration oil L Model 0 35 FV50S 0 35 FV50S 0 40 FV50S Refrigerant control Linear expansion valve...

Страница 5: ...sor Speed 70 60 17 15 H0 1 Heating Steady State at minimum compressor Speed 70 60 62 56 5 H1 1 Heating Steady State at minimum compressor Speed 70 60 47 43 H2 V Heating at Intermediate compressor Speed 5 70 60 35 33 5 At Intermediate compressor Speed Rated compressor speed minimum compressor speed 3 minimum compressor speed 3 4 2 OPERATION Mode Condition Intake air temperature F Indoor Outdoor DB ...

Страница 6: ...MUZ FH06 09 12NA MUZ FH06 09 12NAH REQUIRED SPACE Liquid refrigerant pipe joint Refrigerant pipe flared Ø 1 4 Gas refrigerant pipe joint Refrigerant pipe flared Ø 3 8 4 in 100 mm or more 14 in 350 mm or more 8 in 200 mm or more 2 4 in 100 mm or more OUTLINES AND DIMENSIONS 4 Unit inch MUZ FH06NA MUZ FH06NAH MUZ FH09NA MUZ FH09NAH MUZ FH12NA MUZ FH12NAH OBH684C ...

Страница 7: ... 8 17 25 32 Service panel 3 29 32 6 1 2 7 11 16 3 5 4 4 Liquid refrigerant pipe joint Refrigerant pipe flared Ø 1 4 Gas refrigerant pipe joint Refrigerant pipe flared Ø 1 2 1 20 in 500 mm or more when front and sides of the unit are clear 14in 350 mm or more 4 in 100 mm or more REQUIRED SPACE Clear 1 4 in 100 mm or more 20 in 500 mm or more 2 2 When any 2 sides of left right and rear of the unit a...

Страница 8: ...8 5 WIRING DIAGRAM MUZ FH06NA MUZ FH09NA 1 MUZ FH12NA 1 MUZ FH06NAH MUZ FH09NAH 1 MUZ FH12NAH 1 OBH684C ...

Страница 9: ...9 MUZ FH09NA MUZ FH12NA MUZ FH09NAH MUZ FH12NAH OBH684C ...

Страница 10: ...10 MUZ FH15NA MUZ FH18NA OBH684C ...

Страница 11: ...11 MUZ FH18NA2 OBH684C ...

Страница 12: ...12 MUZ FH15NAH MUZ FH18NAH OBH684C ...

Страница 13: ...13 MUZ FH18NAH2 OBH684C ...

Страница 14: ... D 0 118 I D 0 079 8 9 32 ø3 0 ø2 0 210 Service port Service port Muffler Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve Capillary tube O D 0 157 I D 0 094 3 15 16 ø4 0 ø2 4 100 Refrigerant flow in cooling Compressor Service port 4 way valve Refrigerant flow in heating Refrigerant pipe ø1 2 with heat in...

Страница 15: ...H MUZ FH09NA MUZ FH09NAH 2 lb 9 oz 0 1 08 3 24 5 40 7 56 8 64 Calculation X oz 1 08 5 oz ft Refrigerant piping length ft 25 NOTE Refrigerant piping exceeding 25 ft requires additional refrigerant charge according to the calculation Model Outdoor unit precharged Refrigerant piping length one way ft 25 30 40 50 60 65 MUZ FH12NA MUZ FH12NAH 2 lb 9 oz 0 1 62 4 86 8 10 11 34 12 96 Calculation X oz 1 62...

Страница 16: ...MUZ FH15NA MUZ FH15NAH 71 18 4 10 4 1 07 17 2 9 7 1 17 16 1 9 1 1 26 15 0 8 5 1 33 13 8 7 8 1 38 67 17 4 12 2 1 01 16 2 11 3 1 11 15 0 10 5 1 20 14 0 9 8 1 27 12 8 9 0 1 33 63 16 4 13 6 0 96 15 2 12 6 1 06 14 1 11 8 1 15 12 8 10 7 1 22 11 7 9 8 1 27 MUZ FH18NA MUZ FH18NAH 71 21 1 11 3 1 27 19 7 10 6 1 39 18 5 9 9 1 50 17 2 9 2 1 58 15 8 8 5 1 64 67 20 0 13 4 1 20 18 6 12 4 1 32 17 2 11 5 1 43 16 0...

Страница 17: ...0 18 5 1 27 19 1 1 29 21 4 1 35 MUZ FH15NAH 75 7 9 0 90 10 4 1 10 13 1 1 27 15 6 1 27 17 6 1 33 18 1 1 35 20 5 1 40 70 8 6 0 86 11 1 1 07 13 5 1 24 15 9 1 24 18 0 1 30 18 5 1 33 21 0 1 38 65 9 0 0 83 11 3 1 03 14 1 1 20 16 5 1 20 18 5 1 27 19 1 1 29 21 4 1 35 MUZ FH18NA 75 8 9 1 01 11 8 1 28 14 7 1 51 17 6 1 68 19 8 1 76 20 4 1 79 23 1 1 86 70 9 6 0 97 12 5 1 24 15 2 1 47 18 0 1 63 20 3 1 72 20 9 ...

Страница 18: ...temperature F SHF at rating condition 0 7 411 CFM Airflow Outdoor intake air DB temperature F Total power consumption kW MUZ FH18NA MUZ FH18NAH 71 67 63 65 75 85 95 105 115 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 Indoor intake air WB temperature F SHF at rating condition 0 67 437 CFM Airflow Outdoor intake air DB temperature F Total power consumption kW 71 67 63 65 75 85 95 105 115 1 0 1 1 1 2 1 3 1 4 1 5...

Страница 19: ...F 65 70 75 5 5 15 25 35 45 55 65 0 50 0 75 1 00 1 25 1 50 Indoor intake air DB temperature F 454 CFM Airflow Outdoor intake air WB temperature F Total power consumption kW MUZ FH09NA MUZ FH12NA 65 70 75 5 5 15 25 35 45 55 65 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Indoor intake air DB temperature F 437 CFM Airflow Outdoor intake air WB temperature F Total power consumption kW 65 70 75 5 5 15 25 35 45 55 6...

Страница 20: ...45 55 65 0 75 1 00 1 25 1 50 1 75 2 00 Indoor intake air DB temperature F 514 CFM Airflow Outdoor intake air WB temperature F Total power consumption kW 7 3 CONDENSING PRESSURE Cooling Data are based on the condition of indoor humidity 50 Air flow should be set to High speed MUZ FH06NA MUZ FH06NAH 65 70 75 80 85 90 95 100 105 200 250 300 350 400 450 500 F F 60 65 70 75 80 85 90 95 100 105 90 110 1...

Страница 21: ...DB temperature F PSIG Indoor DB temperature F Outdoor ambient temperature 86 80 75 70 86 80 75 70 65 70 75 80 85 90 95 100 105 200 250 300 350 400 450 500 F F 65 70 75 80 85 90 95 100 105 80 100 120 140 160 180 PSIG Condensing pressure Suction pressure Outdoor ambient temperature Indoor DB temperature F PSIG Indoor DB temperature F Outdoor ambient temperature 86 80 75 70 86 80 75 70 65 70 75 80 85...

Страница 22: ...FH12NA MUZ FH12NAH 75 70 65 75 70 65 PSIG Condensing pressure Outdoor ambient temperature F F PSIG Suction pressure Outdoor ambient temperature 5 15 25 35 45 55 65 75 250 290 330 370 410 450 Indoor DB temperature F 5 15 25 35 45 55 65 75 50 70 90 110 130 150 170 190 210 Indoor DB tem perature F 75 70 65 75 70 65 PSIG Condensing pressure Outdoor ambient temperature F F PSIG Suction pressure Outdoor...

Страница 23: ...Indoor DB temperature F 5 15 25 35 45 55 65 75 50 75 100 125 150 175 200 Indoor DB tem perature F 75 70 65 75 70 65 PSIG Condensing pressure Outdoor ambient temperature F F PSIG Suction pressure Outdoor ambient temperature 5 15 25 35 45 55 65 75 300 350 400 450 500 550 600 Indoor DB temperature F 5 15 25 35 45 55 65 75 50 75 100 125 150 175 200 Indoor DB tem perature F MUZ FH18NA2 MUZ FH18NAH2 OBH...

Страница 24: ...7 04 6 37 5 53 5 00 7 04 6 37 Fan motor current A 0 36 0 33 0 34 0 31 0 36 0 33 0 34 0 31 0 41 0 37 0 40 0 36 1 21 1 09 1 24 1 12 1 21 1 09 1 24 1 12 1 21 1 09 1 24 1 12 Refrigerant circuit Condensing pressure PSIG 332 297 352 323 374 340 361 391 370 445 367 445 Suction pressure PSIG 174 112 153 110 135 106 131 108 125 107 128 107 Discharge temperature F 136 140 148 145 156 148 152 170 153 189 164...

Страница 25: ...The operational frequency of compressor 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 Hz Hz Hz Hz MUZ FH15NA MUZ FH15NAH Capacity correction factors Input correction factors Input correction factors Capacity correction factors ...

Страница 26: ... compressor 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 Hz Hz Hz Hz MUZ FH18NA2 MUZ FH18NAH2 Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capa...

Страница 27: ...oor 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 thermistor Heating Defrosting Fin temperature thermistor Protection Ambient temperature thermistor Cooling Low ambient tempera ture operation Heating Defrosting Heater Outdoor heat exchanger tem...

Страница 28: ... 0 C or less may cause the following troubles To prevent those troubles activate the pre heat control 1 If moisture gets into the refrigerant cycle and freezes it may interfer the start up of the compressor 2 If liquid refrigerant collects in the compressor a failure in the compressor may occur The pre heat control turns ON when the compressor temperature is 68 F 20 C or below When the pre heat co...

Страница 29: ... 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 connector housing DO NOT pull the lead wires 3 Troubleshooting procedure 1 Check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality To make sure check how many times the OPERATION INDICATOR lamp is...

Страница 30: ...mality Before blinking does the left lamp of the OPERATION INDI CATOR lamp stay ON for 3 seconds When it stays ON for 3 seconds without beep The outdoor unit is abnormal The indoor unit is abnormal Check the blinking pattern and identify the abnormal point by referring to the indoor unit failure mode table Refer to indoor unit service manual Make sure to check at least 2 consecutive blinking cycle...

Страница 31: ...blinking pattern and identify the abnormal point by referring to the outdoor unit failure mode table 10 2 3 Make sure to check at least 2 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 failure parts The ...

Страница 32: ...pressor start up failure protection 12 time flash 2 5 seconds OFF Waveform of compressor current is distorted Reconnect compressor connector Refer to 10 5 How to check inverter compressor 5 time flash 2 5 seconds OFF Discharge temperature Temperature of discharge temperature thermistor exceeds 241 F 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 212 F 100 C...

Страница 33: ...Each phase current of compressor cannot be detected normally 14 time flash or more 2 5 seconds OFF Stop valve Closed valve 14 time flash 2 5 seconds OFF Closed valve is detected by compressor current Check stop valve 4 way valve Pipe temperature 16 time flash 2 5 seconds OFF The 4 way valve does not work properly The indoor coil thermistor detects an abnormal temperature Check the 4 way valve Repl...

Страница 34: ...ressor Check stop valve 9 3 time flash 2 5 seconds OFF Discharge tem perature overheat protection Temperature of discharge temperature thermistor exceeds 241 F 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 212 F 100 C or less 3 minutes later Check refrigerant circuit and refrig erant amount Refer to 10 5 Check of LEV 10 4 time flash 2 5 seconds OFF Fin tem...

Страница 35: ...r thermistors 20 Outdoor unit operates 7 time flash 2 5 seconds OFF Low discharge tem perature protection Temperature of discharge temperature thermistor has been 122 F 50 C or less for 20 minutes Refer to 10 5 Check of LEV Check refrigerant circuit and refrig erant amount 21 8 time flash 2 5 seconds OFF MUZ FH06 09 12 PAM protection PAM Pulse Ampli tude Modulation The overcurrent flows into PFC P...

Страница 36: ...r P C board for the chart of thermistor Compressor Measure the resistance between terminals using a tester Temperature 14 104 F 10 40 C Normal Ω MUZ FH06 09 MUZ FH12 MUZ FH15 18 U V U W V W 1 60 2 17 1 66 2 26 0 87 1 18 Outdoor fan motor Measure the resistance between lead wires using a tester Temperature 14 104 F 10 40 C Color of lead wire Normal Ω MUZ FH06 09 12 MUZ FH15 18 RED BLK BLK WHT WHT R...

Страница 37: ...eck of open phase C Check of compressor With the connector between the compressor and the power module IC700 MUZ FH06 09 12 IGBT module IC700 MUZ FH15 18 disconnected activate the inverter and check if the inverter 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 oper...

Страница 38: ...h a drier 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 overcurrent Operation method Start heating or cooling operation by pressing EMERGENCY OPERATION switch on the indoor unit TEST RUN OPERATION Refer to 7 6 Measurement Measure the time from the start of compres...

Страница 39: ...f thermistor normal Refer to 10 6 1 Reconnect the connector of thermistor Turn ON the power supply and press EMERGENCY OPERATION switch Does 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 inverter P C board see below table and measure the resistance of thermistor MUZ FH15 18 Thermistor Sy...

Страница 40: ...power module IC700 Turn ON the power supply and press EMERGENCY OPERATION switch once COOL mode First of all measure the resistance of R V coil to check if the coil is defective Refer to 10 4 In case CN602 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 CN602 is connected Is there 208 2...

Страница 41: ...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 42: ... up or flash Refer to 10 6 1 No Replace the inverter P C board Is there DC voltage 260 370 VDC between DB61 and DB61 MUZ FH06 09 12 294 370 VDC between JP715 and JP30 MUZ FH15 18 on the inverter P C board Refer to 10 6 1 No Check the electric parts in main circuit Yes Yes No Disconnect the connector between the compressor and the power module IC700 MUZ FH06 09 12 IGBT module IC700 MUZ FH15 18 Turn...

Страница 43: ...he 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 10 4 Do you hear the expansion valve click click Do you feel the expansion valve vibrate when touching it Turn ON the power ...

Страница 44: ...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 10 3 Yes No Yes 10 time flash No L Check of inverter P C board OBH684C ...

Страница 45: ...er 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 2 2 Be careful of the residual voltage of smoothing capacitor Is there amplitude of 10 to 20 VDC between the indoor terminal block S2 and S3 Confirmation of serial signal Yes Check the wiring If there are any error of the indoor outdoor connecting wire such as the dama...

Страница 46: ...e defrost thermistor continue to read 30 F 1 C or below NOTE In case both thermistors are more than the above temperature cool them with cold water etc MUZ FH06NAH MUZ FH09NAH MUZ FH12NAH MUZ FH15NAH MUZ FH18NAH MUZ FH18NAH2 Has the operation stopped during pump down Was the operation started with the stop valve closed and was it opened during operation No Yes O Check of outdoor refrigerant circui...

Страница 47: ...ondition 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 outdoor unit of the a...

Страница 48: ...fan motor CN931 208 230 VAC Outdoor heat exchanger temperature thermistor RT68 CN644 Jumper wire for pre heat control setting JK Heater connector CN722 MUZ FH06NAH MUZ FH09 12NAH 1 Fuse F801 T3 15AL250V Back side of unit LEV connector CN724 Output to drive outdoor fan motor CN932 LED 4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 Temperature F Defrost thermistor RT61 Ambient temperature the...

Страница 49: ...eat exchanger temperature thermistor RT68 CN644 Jumper wire for pre heat control setting JK Heater connector CN722 MUZ FH09 12NAH Fuse F801 T3 15AL250V Back side of unit LEV connector CN724 Output to drive outdoor fan motor CN932 LED 4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 Temperature F Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature the...

Страница 50: ...trol setting JK Fuse F601 T3 15AL250V Signal of out door fan motor CN931 R V coil CN602 208 230 VAC 294 370 VDC JP715 JP30 LED Heater connector CN601 208 230 VAC MUZ FH15NAH MUZ FH18NAH 2 4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 Temperature F Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 32 50 68 86 104 122 140 158 176 0...

Страница 51: ...oto 3 51 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 Terminal with locking mechanism Detaching points The terminal which has the locking mechanism can be detached as shown ...

Страница 52: ...he terminal block support and the back panel 6 Remove the inverter assembly 7 Remove the screw of the ground wire and screw of the ter minal 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 remove the inverter P C board from the P C board support Photo 6 3 Removing R V coil 1 Remove the cabinet and panels Refer to 1 2 Disconne...

Страница 53: ...re ther mistor CN643 Ambient temperature thermistor CN644 Outdoor heat exchanger temperature thermistor 3 Pull out the discharge temperature thermistor from its holder 4 Pull out the defrost thermistor from its holder Photo 6 5 Pull out the outdoor heat exchanger temperature thermistor from its holder Photo 6 6 Pull out the ambient temperature thermistor from its holder Photo 8 Photo 9 Photo 10 53...

Страница 54: ...to 2 3 Remove the screws fixing the reactor 4 Remove the reactor 5 Remove the soundproof felt 6 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 PSIG 7 Detach the brazed part of the suction and the discharge pipe connected with compressor 8 Remove the nuts fixing the compressor 9 Remove the compressor 10 Detach the brazed part of pipes conne...

Страница 55: ...g the conduit plate 8 Remove the conduit plate 9 Remove the top panel 10 Remove the valve cover 11 Disconnect the power supply and indoor outdoor connect ing wire 12 Remove the screws of the cabinet 13 Remove the cabinet 14 Remove the screws of the back panel 15 Remove the back panel Photo 2 Photo 1 Photo 3 Photo 4 55 Screws of the cabinet Screws of the top panel Screws of the cabinet Screws of th...

Страница 56: ...H15 18NAH 18NAH2 3 Remove the compressor connector 4 Remove the screws fixing the relay panel 5 Remove the relay panel 6 Remove the ground wires and the lead wires of the inverter P C board 7 Remove the screws of the P B support 8 Remove the inverter P C board from the P B support Photo 5 Photo 6 3 Removing R V coil 1 Remove the cabinet and panels Refer to 1 2 Disconnect the following connector In...

Страница 57: ...net and service panel Refer to 1 2 Disconnect the following connectors Inverter P C board CN931 and CN932 Fan motor 3 Remove the propeller fan 4 Remove the screws fixing the fan motor 5 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 assembly Refer to 2 4 Remove the s...

Страница 58: ...ributed in Dec 2014 No OBH684 REVISED EDITION B Distributed in Apr 2014 No OBH684 REVISED EDITION A Distributed in Feb 2014 No OBH684 Made in Japan HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN New publication effective Oct 2015 Specifications are subject to change without notice ...

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