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12-1. MUZ-FH25VE

MUZ-FH35VE

NOTE

: Turn OFF power supply before disassembly.

OPERATING PROCEDURE

PHOTOS

1. Removing the cabinet

(1) Remove the screw fixing the service panel.
(2) Pull down the service panel and remove it.
(3) Disconnect the power supply and indoor/outdoor con-

necting wire.

(4) Remove the screws fixing the top panel.
(5) Remove the top panel.
(6) Remove the screws fixing the cabinet.
(7) Remove the cabinet.
(8) Remove the screws fixing the back panel.
(9) Remove the back panel.

Photo 1

Photo 2

48

(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

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 points>

The terminal which has the locking mechanism can be detached as shown below.
There are two types (refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.

DISASSEMBLY INSTRUCTIONS

12

Screw of the
cabinet

Screws
of the
back
panel

Screws of
the terminal block
support and the
back panel

OBH624B

«
...
46
47
48
49
50
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Содержание MUZ-FH25VE-E1

Страница 1: ...S 48 Models SPLIT TYPE AIR CONDITIONERS NOTE RoHS compliant products have G mark on the spec name plate HFC utilized R410A No OBH624 REVISED EDITION B OUTDOOR UNIT Indoor unit service manual MSZ FH VE Series OBH623 PARTS CATALOG OBB624 MUZ FH25VE E1 ER1 MUZ FH25VE E2 ER2 MUZ FH35VE E1 ER1 MUZ FH35VE E2 ER2 MUZ FH50VE E1 ER1 Please void OBH624 REVISED EDITION A Revision B MUZ FH25VE ER1 MUZ FH35VE ...

Страница 2: ...e 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 refrigerant is specified in the manuals and on the spec labels pr...

Страница 3: ...2 1 Condenser net has been changed Plastic Steel wire TECHNICAL CHANGES 1 Air outlet Drain outlet Piping Drain hose Air inlet back and side MUZ FH25VE MUZ FH35VE PART NAMES AND FUNCTIONS 2 ACCESSORIES Model MUZ FH25VE MUZ FH35VE MUZ FH50VE Drain socket 1 MUZ FH50VE Piping Air outlet Drain outlet Air inlet back and side Drain hose OBH624B ...

Страница 4: ...L 0 35 FV50S Fan motor Model RC0J50 CI Current 1 Cooling A 0 28 0 30 Heating 0 28 0 30 Dimensions W H D mm 800 550 285 Weight kg 37 Special remarks Dehumidification Cooling L h 0 2 0 8 Air flow 1 Cooling High m3 h 1 806 Low 1 038 Heating High 2 016 Med 1 710 Low 1 326 Sound level 1 Cooling dB A 46 49 Heating 49 50 Fan speed Cooling High rpm 810 Low 490 Heating High 900 Med 770 Low 610 Fan speed re...

Страница 5: ... RC0J60 BC Current 1 Cooling A 0 83 Heating 0 84 Dimensions W H D mm 840 880 330 Weight kg 55 Special remarks Dehumidification Cooling L h 2 0 Air flow 1 Cooling High m3 h 3 006 Med 3 006 Low 1 626 Heating High 2 892 Med 2 892 Low 2 280 Sound level 1 Cooling dB A 51 Heating 54 Fan speed Cooling High rpm 840 Med 840 Low 480 Heating High 810 Med 810 Low 650 Fan speed regulator 3 Refrigerant filling ...

Страница 6: ...64 PTC65 33 Ω Terminal block TB 5 P Relay X63 3 A 250 V X64 20 A 250 V X69 10A 230V R V coil 21S4 220 240 V AC Specifications and rated conditions of main electric parts Model Item MUZ FH50VE Smoothing capacitor CB1 CB2 CB3 560 μF 450 V Fuse F601 F880 F901 T3 15AL250 V IGBT module IC932 5 A 600 V IC700 20 A 600 V Expansion valve coil LEV 12 VDC Reactor L 340 μH Diode module IC820 20 A 600 V Circui...

Страница 7: ...E BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE HEATING 49 50 NC 10 MUZ FH35VE NOISE CRITERIA CURVES 4 Test conditions Cooling Dry bulb temperature 35 C Heating Dry bulb temperature 7 C Wet bulb temperature 6 C OUTDOOR UNIT MICROPHONE 1 m MUZ FH50VE 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 ...

Страница 8: ...n front and sides of unit are clear 2 When any 2 sides of left right and rear of unit are clear Clear 1 200 mm or more 2 Unit mm MUZ FH25VE MUZ FH35VE OUTLINES AND DIMENSIONS 5 MUZ FH50VE 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 Refrigerant pipe flared Ø 6 35 Gas refrigerant pipe joi...

Страница 9: ...9 WIRING DIAGRAM 6 MUZ FH25VE E1 MUZ FH35VE E1 MUZ FH25VE E2 ER1 ER2 MUZ FH35VE E2 ER1 ER2 OBH624B ...

Страница 10: ...10 MUZ FH50VE E1 OBH624B ...

Страница 11: ...11 MUZ FH50VE ER1 OBH624B ...

Страница 12: ...tube ø4 0 ø2 4 240 Outdoor heat exchanger temperature thermistor RT68 Capillary tube ø3 0 ø2 0 210 Muffler REFRIGERANT SYSTEM DIAGRAM 7 MUZ FH50VE Outdoor heat exchanger Flared connection Defrost thermistor RT61 Discharge temperature thermistor RT62 Flared connection Stop valve Stop valve Capillary tube ø4 0 ø2 4 100 Refrigerant flow in cooling Compressor 4 way valve Refrigerant flow in heating Re...

Страница 13: ...15 12 7 6 35 ADDITIONAL REFRIGERANT CHARGE R410A g Model Outdoor unit precharged Refrigerant piping length one way 7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 m 20 m MUZ FH25 35 1 150 0 30 60 90 120 150 180 210 240 390 Calculation X g 30 g m Refrigerant piping length m 7 Model Outdoor unit precharged Refrigerant piping length one way 7 m 10 m 15 m 20 m 25 m 30 m MUZ FH50 1 550 0 60 160 260 360 460 Cal...

Страница 14: ... sets 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...

Страница 15: ...VE 19 8 18 3 16 8 15 2 13 7 12 2 10 7 9 1 7 6 6 1 MUZ FH35VE 26 9 24 8 22 7 20 7 18 6 16 5 14 5 12 4 10 3 8 3 MUZ FH50VE Outdoor intake air Wet bulb temperature C 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 15 9 14 6 13 4 12 2 11 ...

Страница 16: ...ating input The operational frequency of compressor Hz Input correction factors Correction of Cooling capacity Capacity correction factors Correction of Cooling input Input correction factors Correction of Heating capacity Capacity correction factors MUZ FH50VE Correction of Heating input Capacity correction factors The operational frequency of compressor Hz The operational frequency of compressor...

Страница 17: ...ed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf cm2 Gauge 15 20 50 25 60 30 70 35 1 5 2 0 2 5 3 0 15 20 50 25 60 30 70 35 2 5 3 0 3 5 4 0 4 5 Ambient temperature C Ambient humidity Outdoor current A Ambient temperature C Ambient humidity Outdoor current A MUZ FH35VE MUZ FH25VE Outdoor unit current 15 20 50 25 60 30 70 35 3 4 5 6 7 8 MUZ F...

Страница 18: ... 480 27 24 3 35 2 18 0 65 441 3 23 2 10 0 65 466 3 15 2 05 0 65 480 3 05 1 98 0 65 504 27 26 3 45 1 83 0 53 466 3 35 1 78 0 53 490 3 30 1 75 0 53 504 3 20 1 70 0 53 519 28 18 2 94 2 94 1 00 388 2 81 2 81 1 00 407 2 70 2 70 1 00 427 2 60 2 60 1 00 446 28 20 3 06 2 85 0 93 407 2 94 2 73 0 93 432 2 85 2 65 0 93 441 2 75 2 56 0 93 461 28 22 3 19 2 58 0 81 422 3 08 2 49 0 81 449 3 00 2 43 0 81 461 2 88...

Страница 19: ... 543 2 38 1 83 0 77 563 27 24 2 88 1 87 0 65 534 2 70 1 76 0 65 558 2 55 1 66 0 65 582 27 26 3 03 1 60 0 53 553 2 85 1 51 0 53 577 2 68 1 42 0 53 601 28 18 2 45 2 45 1 00 475 2 25 2 25 1 00 504 2 08 2 08 1 00 524 28 20 2 58 2 39 0 93 495 2 40 2 23 0 93 519 2 23 2 07 0 93 548 28 22 2 73 2 21 0 81 514 2 55 2 07 0 81 543 2 38 1 92 0 81 563 28 24 2 88 1 98 0 69 534 2 70 1 86 0 69 558 2 55 1 76 0 69 58...

Страница 20: ... 812 27 24 4 69 2 53 0 54 746 4 52 2 44 0 54 787 4 41 2 38 0 54 812 4 27 2 31 0 54 853 27 26 4 83 2 03 0 42 787 4 69 1 97 0 42 828 4 62 1 94 0 42 853 4 48 1 88 0 42 877 28 18 4 11 3 87 0 94 656 3 94 3 70 0 94 689 3 78 3 55 0 94 722 3 64 3 42 0 94 754 28 20 4 29 3 52 0 82 689 4 11 3 37 0 82 730 3 99 3 27 0 82 746 3 85 3 16 0 82 779 28 22 4 46 3 12 0 70 713 4 31 3 01 0 70 759 4 20 2 94 0 70 779 4 03...

Страница 21: ...8 3 33 2 19 0 66 951 27 24 4 03 2 17 0 54 902 3 78 2 04 0 54 943 3 57 1 93 0 54 984 27 26 4 24 1 78 0 42 935 3 99 1 68 0 42 976 3 75 1 57 0 42 1017 28 18 3 43 3 22 0 94 804 3 15 2 96 0 94 853 2 91 2 73 0 94 886 28 20 3 61 2 96 0 82 836 3 36 2 76 0 82 877 3 12 2 55 0 82 927 28 22 3 82 2 67 0 70 869 3 57 2 50 0 70 918 3 33 2 33 0 70 951 28 24 4 03 2 33 0 58 902 3 78 2 19 0 58 943 3 57 2 07 0 58 984 ...

Страница 22: ...7 24 6 70 2 88 0 43 1256 6 45 2 77 0 43 1325 6 30 2 71 0 43 1366 6 10 2 62 0 43 1435 27 26 6 90 2 14 0 31 1325 6 70 2 08 0 31 1394 6 60 2 05 0 31 1435 6 40 1 98 0 31 1477 28 18 5 88 4 88 0 83 1104 5 63 4 67 0 83 1159 5 40 4 48 0 83 1214 5 20 4 32 0 83 1270 28 20 6 13 4 35 0 71 1159 5 88 4 17 0 71 1228 5 70 4 05 0 71 1256 5 50 3 91 0 71 1311 28 22 6 38 3 76 0 59 1201 6 15 3 63 0 59 1277 6 00 3 54 0...

Страница 23: ...4 75 2 61 0 55 1601 27 24 5 75 2 47 0 43 1518 5 40 2 32 0 43 1587 5 10 2 19 0 43 1656 27 26 6 05 1 88 0 31 1573 5 70 1 77 0 31 1642 5 35 1 66 0 31 1711 28 18 4 90 4 07 0 83 1352 4 50 3 74 0 83 1435 4 15 3 44 0 83 1490 28 20 5 15 3 66 0 71 1408 4 80 3 41 0 71 1477 4 45 3 16 0 71 1559 28 22 5 45 3 22 0 59 1463 5 10 3 01 0 59 1546 4 75 2 80 0 59 1601 28 24 5 75 2 70 0 47 1518 5 40 2 54 0 47 1587 5 10...

Страница 24: ...T Q INPUT Q INPUT Q INPUT Q INPUT 15 2 52 520 3 04 624 3 56 704 4 08 760 4 60 808 5 08 832 5 60 848 21 2 40 560 2 88 664 3 40 736 3 88 792 4 40 832 4 88 856 5 38 888 26 2 16 600 2 68 704 3 16 776 3 68 832 4 20 872 4 68 896 5 20 920 MUZ FH50VE CAPACITY 6 0 kW INPUT 1480 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 78 962 4 56 1154 5 34 13...

Страница 25: ...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 thermistor Heating Defrosting...

Страница 26: ...0 W MUZ FH50 Prolonged low load operation in which the thermostat is OFF for a long time at low outside temperature 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...

Страница 27: ...tor 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 TROUBLESHOOTING 11 3 Troubleshooting procedure 1 Check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality To ma...

Страница 28: ...e blinking does POWER 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 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 two consecutive blinking cycles 2 Releasing the failure mode recall function Release...

Страница 29: ...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 failure mode again accordi...

Страница 30: ...ck 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 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 Temp...

Страница 31: ... ceeds 75 86 C FH25 35 75 80 C FH50 or temperature of P C board temperature thermistor on the inverter P C board exceeds 72 85 C FH25 35 70 75 C FH50 Check around outdoor unit Check outdoor unit air passage Refer to 11 5 Check of outdoor fan motor 11 5 time flash 2 5 seconds OFF High pressure pro tection Indoor coil thermistor exceeds 70 C in HEAT mode Defrost thermistor exceeds 70 C in COOL mode ...

Страница 32: ...the power supply voltage is high MUZ FH50 Zero cross detecting circuit Zero cross signal cannot be detected It occurs with following cases 1 Instantaneous power voltage drop Short time power failure 2 Distortion of primary voltage Refer to 11 5 Check of power supply 22 9 time flash 2 5 seconds OFF Inverter check mode The connector of compressor is disconnected inverter check mode starts Check if t...

Страница 33: ...int diagram and voltage 1 Inverter P C board for the chart of thermistor Compressor Measure the resistance between terminals using a tester Temperature 10 40 C Normal Ω MUZ FH25 35VE MUZ FH50VE U V U W V W 1 66 2 26 0 87 1 18 Outdoor fan motor Measure the resistance between lead wires using a tester Temperature 10 40 C Color of lead wire Normal Ω MUZ FH25 35VE MUZ FH50VE RED BLK BLK WHT WHT RED 12...

Страница 34: ...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 OPERA TION Refer to 8 3 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 Measure the voltage by analog type tester 3 During this check LED of t...

Страница 35: ...it TEST RUN OPERATION Refer to 8 3 Measurement Measure the time from the start of compressor to the stop of compressor due to overcurrent Compressor starts Abnormal IPM failure Compressor winding short Abnormal Compressor lock out Starting defect Abnormal Poor contact Inverter P C board defect Disconnected connector Abnormal Refrigerant circuit defect Closed valve Normal 0 second 1 second 2 second...

Страница 36: ...measure the resistance of thermistor MUZ FH25 35 Thermistor Symbol Connector Pin No Board Defrost RT61 Between CN641 pin1 and pin2 Inverter P C board Discharge temperature RT62 Between CN641 pin3 and pin4 Fin temperature RT64 Between CN642 pin1 and pin2 Ambient temperature RT65 Between CN643 pin1 and pin2 Outdoor heat exchanger temperature RT68 Between CN644 pin1 and pin3 MUZ FH50 Thermistor Symbo...

Страница 37: ...he 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 11 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 23...

Страница 38: ...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 39: ...efer to 11 6 1 No Replace the inverter P C board Is there bus bar voltage 260 370 VDC between DB61 and DB61 MUZ FH25 35 325 370 VDC between JP715 and JP30 MUZ FH50 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 the compressor and the power module IC700 MUZ FH25 35 IGBT module IC700 MUZ FH50 Turn ON power supply and ...

Страница 40: ...e 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 sup...

Страница 41: ...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 OBH624B ...

Страница 42: ...r electronic control P C board No Does the indoor POWER lamp 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 indoor terminal...

Страница 43: ...N Yes Turn OFF inverter controlled lighting equipment Turn OFF the power supply and then turn ON again Press EMERGENCY OPERATION switch A Is serial signal error indicated 6 minutes later B Yes Reinstall either the unit or the light away from each other Attach a filter on remote control receiving section of the indoor unit No NOTE Refer to the indoor unit service manual Replace the indoor electroni...

Страница 44: ...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 45: ...VE 11 6 TEST 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 Fuse F901 T3 15AL250V R V coil CN721 230 VAC Jumper wi...

Страница 46: ...r RT64 Resistance k Resistance k Resistance k Fin temperature thermistor RT64 CN673 Ambient temperature thermistor RT65 CN672 Discharge temperature thermistor RT62 CN671 Defrost thermistor RT61 CN671 Output to drive outdoor fan motor CN932 Outdoor heat exchanger temperature thermistor RT68 CN671 Fuse F901 T3 15AL250V Fuse F880 T3 15AL250V LEV connector CN724 Jumper wire for changing defrost settin...

Страница 47: ...47 2 Relay P C board MUZ FH50VE To inverter P C board CN681 CN680 CN60 L68B L68A 10 VDC OBH624B ...

Страница 48: ...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 points The terminal whi...

Страница 49: ...to 1 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 ther...

Страница 50: ...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 50 Propeller nut Screws of...

Страница 51: ...l 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 2 Photo 1 51 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 Sc...

Страница 52: ...e 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 relay panel 9 Disconnect the following connectors Relay P C board CN60 Terminal block CN680 Inverter P C board TAB65 Inverter P C board TB71 10 Remove the screws fixing the P B holder 11 Remove the relay P C board from the P B holder Photo 3 Photo 4 3 Removing R V coil 1 Remove th...

Страница 53: ...or 1 Remove the top panel 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 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...

Страница 54: ...624 REVISED EDITION B Distributed in Mar 2013 No OBH624 REVISED EDITION A Distributed in Oct 2012 No OBH624 Made in Japan HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN New publication effective Dec 2013 Specifications are subject to change without notice ...

Страница 55: ...25 35VE3 MUZ EF25 35VE Installation Manual JG79A476H01 MSZ FH25 35 and MUZ FH25 35 Declaration of Conformity MSZ FH25 35VE2 MUZ FH25 35VE Declaration of Conformity CE2016B25 MUZ FH25 35 Service Manual OBH624B MUZ FH25 50VE Parts Catalogue OBB624B ...

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