Mitsubishi Electric MUZ-A18YV Скачать руководство пользователя | Manualshive

Страница: 37 / 52

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37

A

A

Check of power supply

Outdoor unit does not operate. (LED display: display OFF)

Turn on power supply.

No

Yes

Yes

No

No

Yes

No

Yes

Yes

No

Replace the power board.

Start

Check the connecting of parts of main power supply circuit.

Is there voltage of 230V AC in the
power supply terminal block?

Is the output voltage from the noise
filter P.C. board 230V AC?

Is the input voltage to the outdoor
electronic control P.C. board 325V DC?

Check the power supply cable.

Replace the outdoor electronic control
P.C. board.

Replace the noise
filter P.C. board.

Is fuse (F912) blown?

Is the input voltage to the power board
230V AC?

Replace the fuse.

Replace the reactor.

OB346E --2qxp 07.2.8 6:56 PM Page 37

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Содержание MUZ-A18YV

Страница 1: ...ND FUNCTIONS 6 3 SPECIFICATION 7 4 NOISE CRITERIA CURVES 10 5 OUTLINES AND DIMENSIONS 11 6 WIRING DIAGRAM 12 7 REFRIGERANT SYSTEM DIAGRAM 14 8 PERFORMANCE CURVES 16 9 ACTUATOR CONTROL 31 10 TROUBLESHOOTING 32 11 DISASSEMBLY INSTRUCTIONS 46 12 PARTS LIST 50 NOTE This service manual describes technical data of the outdoor units As for indoor units MSZ A18YV MSZ A24YV and MSZ A26YV refer to the servi...

Страница 2: ... Name Correct Incorrect Part Number 12 1 No 18 12 1 No 18 12 1 No 18 4 WAY VALVE 4 WAY VALVE 4 WAY VALVE E02 891 961 E02 891 961 E02 891 961 E02 679 961 E02 679 961 E02 679 961 MUZ A18YV E1 MUZ A24YV E1 MUZ A26YV E1 Revision D Compressor has been changed MUZ A18 24YV Previous New Model SNB130FLDH SNB130FLDH1 PARTS LIST number E02 851 900 E02 939 900 Revision E Check of outdoor thermistors of 10 TR...

Страница 3: ...as high as that of R22 some special tools and piping parts materials are required Refer to the table below 2 Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 3 For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to ...

Страница 4: ... due to high pressure and high speed vaporization No No No Yes Yes New New New Gauge manifold Charge hose Torque wrench Flare tool Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging No Not Substitutable for R410A Yes Substitutable for R410A No 12 7 mm and 15 88mm 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refri...

Страница 5: ...ked with indoor unit to the flare and the union seat surfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrig...

Страница 6: ...AND FUNCTIONS OUTDOOR UNIT Air inlet Piping Air outlet back and side Drain hose Drain outlet ACCESSORIES 1 2 Drain socket Drain cap 33 1 2 MUZ A18YV E1 MUZ A24YV E1 MUZ A26YV E1 MUZ A18YV MUZ A24YV MUZ A26YV E1 E1 E1 ...

Страница 7: ...y Rated frequency Min Max Dehumidification Air flow High LowW Power outlet Running current Power input Power factor Starting current 1 Compressor motor current 1 Fan motor current Model Output Winding resistance at 20 Model Winding resistance at 20 Dimensions WOHOD Weight Sound level High LowW Fan speed High LowW Fan speed regulator Refrigerant filling capacity R410A Refrigeration oil Model Thermi...

Страница 8: ...ngle phase 230V 50Hz 20 98 3 11 42 0 30 TNB220FMCH 1 300 U V 1 41 W U 1 41 V W 1 41 PM8H60 UB BLK WHT 15 2 WHT RED 15 2 RED BLK15 2 840o850o330 58 2 2 0 NEO22 13 4 10 0 17 0 10 0 Cooling 7 1 0 9 8 3 3 8 2 940 1 650W 10 75 2 431 10 45 2 84 53 51W 800 480W Heating 8 1 0 9 9 6 2 940 2 210W 11 42 2 581 11 12 3 06 55 53W 800 620W Outdoor model Function Power supply Capacity Rated frequency Min Max Dehu...

Страница 9: ... coil relay Terminal block Terminal block Relay R V coil MUZ A18YV E1 CB1 2 3 CT1 2 CT61 F801 F912 F911 HC932 HPS IPM L LEV PFC R64 R934A B RS1 4 SSR61 TB1 TB2 X64 21S4 MUZ A24YV E1 MUZ A26YV E1 560 450V ETQ19Z68AY ETQ19Z53AY 250V 3 15A 250V 1A SLA5075 PS21244 A 340µH 20A PS51259 A 10 20W 1 1 2W 2 0 04 7W TLP3506 3P 2P G4A LD30013 ACB DB156 CAM 40YGME 12VDC CAM 30YGME 12VDC Specifications and rati...

Страница 10: ...50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz Test conditions Cooling Dry bulb temperature 35 Wet bulb temperature 24 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE Heating Dry bulb temperature 7 Wet bulb temperature 6 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR MUZ A18YV MUZ A24YV MUZ A26YV E1 E1 E1 OUTDOOR UNIT MICROPHONE 1m ...

Страница 11: ... front and both sides are open 100mm or more 200mm or more if there are obstacles to both sides Open as a rule 500mm or more if the back both sides and top are open 350mm or more 100mm or more Service panel Gas refrigerant pipe joint Refrigerant pipe flared 12 7 MUZ A18YV 15 88 MUZ A24 A26YV Liquid refrigerant pipe joint Refrigerant pipe flared 6 35 MUZ A18 A24YV 9 52 MUZ A26YV REQUIRED SPACE ...

Страница 12: ...B4 YLW V MC W U V WHT RT62 RT61 RT68 LEV Terminal block Connector 3 Symbols below indicate 2 Use copper conductors only for field wiring diagram for servicing refer to the indoor unit electric wiring 1 About the indoor side electric wiring NOTES SYMBOL NAME SYMBOL NAME CURRENT TRANSFORMER FUSE 250V 3 15A FUSE 250V 1A LEV EXPANSION VALVE COIL L REACTOR IPM POWER TRANSISTOR MODULE CT61 CT1 2 CURRENT...

Страница 13: ...V WHT RT62 RT61 RT68 LEV Terminal block Connector 3 Symbols below indicate 2 Use copper conductors only for field wiring diagram for servicing refer to the indoor unit electric wiring 1 About the indoor side electric wiring NOTES SYMBOL NAME SYMBOL NAME CURRENT TRANSFORMER FUSE 250V 3 15A FUSE 250V 1A LEV EXPANSION VALVE COIL L REACTOR IPM POWER TRANSISTOR MODULE HPS HIGH PRESSURE SWITCH CT61 CT1 ...

Страница 14: ...g OFF Muffler 100 Strainer 100 Receiver Outdoor heat exchanger temperature thermistor RT68 Strainer 100 MUZ A26YV E1 OUTDOOR UNIT Unit mm Outdoor heat exchanger Flared connection Defrost thermistor RT62 Discharge temperature thermistor RT61 Flared connection Stop valve Stop valve with service port Capillary tube 3 6 2 4 50 Capillary tube 1 8 0 6 1000 Refrigerant flow in cooling Compressor 4 way va...

Страница 15: ...E1 MUZ A26YV E1 Outdoor unit Gas 0 Liquid 0 Model MUZ A18YV E1 Refrigerant piping length one way Outdoor unit precharged 1 800 15m 160 20m 260 25m 360 30m 460 7m 0 10m 60 ADDITIONAL REFRIGERANT CHARGE R410A g Calculation Xg 20g m Refrigerant piping length m 7 Model MUZ A24YV E1 Refrigerant piping length one way 15m 160 20m 260 25m 360 7m 0 10m 60 Outdoor unit precharged 1 800 30m 460 Calculation X...

Страница 16: ...r 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 filter is cleaned 4 Open windows and doors of room 5 P...

Страница 17: ...put The operational frequency of compressor Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capacity 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 ...

Страница 18: ...tion of Cooling capacity 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 MUZ A24YV E1 Indoor unit MCFZ A24WV E1 E1 MUZ A24YV E1 Indoor unit MCFZ A24WV E1 E1 MUZ A24YV E1 Indoor unit MCFZ A2...

Страница 19: ... A18YV 32Hz MUZ A24YV 32Hz MUZ A26YV 0 4 0 6 0 8 1 0 1 2 1 4 4 6 8 10 12 14 16 1 6 MUZ A26YV E1 15 20 50 25 60 30 70 35 C 2 5 3 3 5 4 4 5 24Hz 32 18 Outdoor unit current A Ambient temperature C Ambient humidity MUZ A26YV E1 MPa Gauge kgf F Gauge 18 32 15 20 50 25 60 30 70 35 C 24Hz Ambient temperature C Ambient humidity Outdoor low pressure 0 4 0 6 0 8 1 0 1 2 1 4 4 6 8 10 12 14 16 1 6 MPa Gauge k...

Страница 20: ... 75 1248 5 63 4 22 0 75 1310 5 40 4 05 0 75 1373 5 20 3 90 0 75 1435 28 20 6 13 3 86 0 63 1310 5 88 3 70 0 63 1388 5 70 3 59 0 63 1420 5 50 3 47 0 63 1482 28 22 6 38 3 25 0 51 1357 6 15 3 14 0 51 1443 6 00 3 06 0 51 1482 5 75 2 93 0 51 1544 28 24 6 70 2 61 0 39 1420 6 45 2 52 0 39 1498 6 30 2 46 0 39 1544 6 10 2 38 0 39 1622 28 26 6 90 1 86 0 27 1498 6 70 1 81 0 27 1576 6 60 1 78 0 27 1622 6 40 1 ...

Страница 21: ...2 4 33 3 24 0 75 1654 28 20 5 15 3 24 0 63 1591 4 80 3 02 0 63 1669 4 63 2 91 0 63 1716 28 22 5 45 2 78 0 51 1654 5 10 2 60 0 51 1747 4 93 2 51 0 51 1778 28 24 5 75 2 24 0 39 1716 5 40 2 11 0 39 1794 5 25 2 05 0 39 1833 28 26 6 05 1 63 0 27 1778 5 70 1 54 0 27 1856 5 53 1 49 0 27 1895 29 18 4 90 3 87 0 79 1529 4 50 3 56 0 79 1622 4 33 3 42 0 79 1654 29 20 5 15 3 45 0 67 1591 4 80 3 22 0 67 1669 4 ...

Страница 22: ...52 2 59 0 47 1812 27 24 6 43 2 25 0 35 1665 6 19 2 17 0 35 1757 6 05 2 12 0 35 1812 5 86 2 05 0 35 1903 27 26 6 62 1 52 0 23 1757 6 43 1 48 0 23 1848 6 34 1 46 0 23 1903 6 14 1 41 0 23 1958 28 18 5 64 4 23 0 75 1464 5 40 4 05 0 75 1537 5 18 3 89 0 75 1610 4 99 3 74 0 75 1684 28 20 5 88 3 70 0 63 1537 5 64 3 55 0 63 1629 5 47 3 45 0 63 1665 5 28 3 33 0 63 1739 28 22 6 12 3 12 0 51 1592 5 90 3 01 0 ...

Страница 23: ...3 4 15 3 11 0 75 1940 28 20 4 94 3 11 0 63 1867 4 61 2 90 0 63 1958 4 44 2 80 0 63 2013 28 22 5 23 2 67 0 51 1940 4 90 2 50 0 51 2050 4 73 2 41 0 51 2086 28 24 5 52 2 15 0 39 2013 5 18 2 02 0 39 2105 5 04 1 97 0 39 2150 28 26 5 81 1 57 0 27 2086 5 47 1 48 0 27 2178 5 30 1 43 0 27 2223 29 18 4 70 3 72 0 79 1793 4 32 3 41 0 79 1903 4 15 3 28 0 79 1940 29 20 4 94 3 31 0 67 1867 4 61 3 09 0 67 1958 4 ...

Страница 24: ...72 6 48 4 80 0 74 1751 6 24 4 62 0 74 1831 28 20 7 35 4 56 0 62 1672 7 05 4 37 0 62 1771 6 84 4 24 0 62 1811 6 60 4 09 0 62 1891 28 22 7 65 3 83 0 50 1731 7 38 3 69 0 50 1841 7 20 3 60 0 50 1891 6 90 3 45 0 50 1970 28 24 8 04 3 06 0 38 1811 7 74 2 94 0 38 1910 7 56 2 87 0 38 1970 7 32 2 78 0 38 2070 28 26 8 28 2 15 0 26 1910 8 04 2 09 0 26 2010 7 92 2 06 0 26 2070 7 68 2 00 0 26 2129 29 18 7 05 5 ...

Страница 25: ...0 5 19 3 84 0 74 2109 28 20 6 18 3 83 0 62 2030 5 76 3 57 0 62 2129 5 55 3 44 0 62 2189 28 22 6 54 3 27 0 50 2109 6 12 3 06 0 50 2229 5 91 2 96 0 50 2269 28 24 6 90 2 62 0 38 2189 6 48 2 46 0 38 2289 6 30 2 39 0 38 2338 28 26 7 26 1 89 0 26 2269 6 84 1 78 0 26 2368 6 63 1 72 0 26 2418 29 18 5 88 4 59 0 78 1950 5 40 4 21 0 78 2070 5 19 4 05 0 78 2109 29 20 6 18 4 08 0 66 2030 5 76 3 80 0 66 2129 5 ...

Страница 26: ...3 5 94 4 46 0 75 2130 5 72 4 29 0 75 2226 28 20 6 74 4 24 0 63 2033 6 46 4 07 0 63 2154 6 27 3 95 0 63 2202 6 05 3 81 0 63 2299 28 22 7 01 3 58 0 51 2105 6 77 3 45 0 51 2239 6 60 3 37 0 51 2299 6 33 3 23 0 51 2396 28 24 7 37 2 87 0 39 2202 7 10 2 77 0 39 2323 6 93 2 70 0 39 2396 6 71 2 62 0 39 2517 28 26 7 59 2 05 0 27 2323 7 37 1 99 0 27 2444 7 26 1 96 0 27 2517 7 04 1 90 0 27 2589 29 18 6 46 5 1...

Страница 27: ... 4 76 3 57 0 75 2565 28 20 5 67 3 57 0 63 2468 5 28 3 33 0 63 2589 5 09 3 21 0 63 2662 28 22 6 00 3 06 0 51 2565 5 61 2 86 0 51 2710 5 42 2 76 0 51 2759 28 24 6 33 2 47 0 39 2662 5 94 2 32 0 39 2783 5 78 2 25 0 39 2844 28 26 6 66 1 80 0 27 2759 6 27 1 69 0 27 2880 6 08 1 64 0 27 2940 29 18 5 39 4 26 0 79 2372 4 95 3 91 0 79 2517 4 76 3 76 0 79 2565 29 20 5 67 3 80 0 67 2468 5 28 3 54 0 67 2589 5 0...

Страница 28: ...00 7 67 5 60 0 73 2200 7 38 5 39 0 73 2300 28 20 8 70 5 31 0 61 2100 8 34 5 09 0 61 2225 8 09 4 94 0 61 2275 7 81 4 76 0 61 2375 28 22 9 05 4 44 0 49 2175 8 73 4 28 0 49 2313 8 52 4 17 0 49 2375 8 17 4 00 0 49 2475 28 24 9 51 3 52 0 37 2275 9 16 3 39 0 37 2400 8 95 3 31 0 37 2475 8 66 3 20 0 37 2600 28 26 9 80 2 45 0 25 2400 9 51 2 38 0 25 2525 9 37 2 34 0 25 2600 9 09 2 27 0 25 2675 29 18 8 34 6 ...

Страница 29: ...0 6 14 4 48 0 73 2650 28 20 7 31 4 46 0 61 2550 6 82 4 16 0 61 2675 6 57 4 01 0 61 2750 28 22 7 74 3 79 0 49 2650 7 24 3 55 0 49 2800 6 99 3 43 0 49 2850 28 24 8 17 3 02 0 37 2750 7 67 2 84 0 37 2875 7 46 2 76 0 37 2938 28 26 8 59 2 15 0 25 2850 8 09 2 02 0 25 2975 7 85 1 96 0 25 3038 29 18 6 96 5 36 0 77 2450 6 39 4 92 0 77 2600 6 14 4 73 0 77 2650 29 20 7 31 4 75 0 65 2550 6 82 4 43 0 65 2675 6 ...

Страница 30: ...UTDOOR WB INDOOR 10 5 0 5 10 15 20 DB Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 5 10 1723 6 16 2067 7 21 2332 8 26 2518 9 32 2677 10 29 2756 11 34 2809 21 4 86 1855 5 83 2200 6 89 2438 7 86 2624 8 91 2756 9 88 2836 10 89 2942 26 4 37 1988 5 43 2332 6 40 2571 7 45 2756 8 51 2889 7 96 2968 10 53 3048 MSZ A26YV MUZ A26YV Rated frequency 65Hz E1 E1 CAPACITY 6 0 kW INPUT 2080 W OUTDOOR...

Страница 31: ...n R V coil ON OFF ON OFF COOL 5 seconds HEAT 5 seconds 9 1 Outdoor fan motor control The fan motor turns ON OFF interlocking with the compressor ON The fan motor turns ON 5 seconds before the compressor starts up OFF The fan motor turns OFF 15 seconds after the compressor has stopped running Discharge temperature thermistor Indoor pipe temperature thermistor Defrost thermistor Fin temperature ther...

Страница 32: ...k the power supply voltage 2 Check the indoor outdoor connecting wire for mis wiring 2 Take care of the following during servicing 1 Before servicing the air conditioner be sure to first turn off the remote controller to stop the main unit 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...

Страница 33: ...door Outdoor unit Mis wiring or trouble of serial signal 2 time flash Cause Indoor unit Trouble of room temp erature indoor coil thermistor MSZ type 3 time flash Cause Indoor unit Trouble of indoor fan motor 5 time flash Cause Outdoor unit Outdoor power system abnormality 6 time flash Cause Outdoor unit Trouble of thermistor in outdoor unit 7 time flash Cause Outdoor unit Trouble of outdoor contro...

Страница 34: ...ween P C boards When the communication failure between the outdoor electronic control P C board and power board occurs twice consecutively Check if the connection wires between noise filter P C board and power board are correctly connected Lighting 12 times Zero cross signal error When the zero cross signal cannot be detected while the compressor is operating Check the outdoor unit air passage Che...

Страница 35: ...nts Air filter clogging Amount of gas Short cycle of indoor outdoor air flow Once Lighting Current protection When the outdoor unit input current exceeds 14 5A Twice Lighting High pressure protection When the indoor gas pipe temperature exceeds 55 C during heating Twice Lighting Defrosting in cooling When the indoor gas pipe temperature falls to 6 C or below during cooling 3 times Lighting Dischar...

Страница 36: ...er Part temperature 10 C 40 C Outdoor fan motor Measure the resistance using a tester Part temperature 10 C 40 C R V coil Measure the resistance using a tester Part temperature 10 C 40 C Linear expansion valve LEV WHT RED YLW BRN ORN BLU Color of lead wire Normal WHT RED RED ORN YLW BRN BRN BLU Abnormal Open or short circuit 37 4Ω 53 9Ω MUZ A18YV MUZ A24YV MUZ A26YV E1 E1 E1 MUZ A18 A24YV 1 29Ω 1 ...

Страница 37: ...circuit Is there voltage of 230V AC in the power supply terminal block Is the output voltage from the noise filter P C board 230V AC Is the input voltage to the outdoor electronic control P C board 325V DC Check the power supply cable Replace the outdoor electronic control P C board Replace the noise filter P C board Is fuse F912 blown Is the input voltage to the power board 230V AC Replace the fu...

Страница 38: ...ng wire Turn ON the power supply Indoor outdoor unit Press the EMERGENCY OPERATION switch Is there amplitude of 5 to 10V DC between outdoor terminal block N and 3 after 3 minutes for confirmation of serial signal Yes light up or OFF Yes No Turn OFF inverter controlled lighting equipment Turn OFF the power supply and then turn ON again Indoor outdoor unit Press the EMERGENCY OPERATION switch B Rein...

Страница 39: ...ise filter P C board Is there normal resistance to R V coil Start 1 Disconnect the lead wire leading to the compressor 2 3 minutes after turning on the power supply start EMERGENCY OPERATION in COOL mode Is there voltage of 230V AC between pin1 and pin 2 at connector CN912 1 Turn off power supply of indoor and outdoor unit and disconnect the connector CN781 in the outdoor electronic control P C bo...

Страница 40: ...s after turning on the power supply start EMERGENCY OPERATION Is output balanced Clarify the causes by counting time until the inverter stops 0 to 10 seconds compressor rare short 10 to 60 seconds compressor lock 60 seconds to 5minutes refrigerant circuit defective 5 minutes or more normal Measure the voltage between each lead wire leading to the compressor U BLK V WHT V WHT W RED W RED U BLK Outp...

Страница 41: ...sure the resistance of thermistor Is the thermistor normal Does thermistor operate 10 minutes or more though the thermistor abnormality is not displayed Replace the thermistor w Normal Replace the outdoor electronic control P C board G G Check of outdoor fan motor Fan motor does not operate or stops operating shortly after starting the operation Yes Yes Yes No No Fixed to either 5V or 0V DC Start ...

Страница 42: ...r unit power supply was turned off Check the resistance between each terminal Reconnect CN681 Turn on power supply to the indoor and outdoor unit 3 minutes later start EMERGENCY OPERATION Is HPS protection displayed immediately after compressor starts Replace HPS Replace the electronic control P C board Normal When the operation frequency does not go up from lowest frequency MUZ A26YV ...

Страница 43: ... pulse wave GND CN702 Signal reception From power board 5V DC pulse wave GND power board CN781 CN795 12V DC pulse wave LEV MUZ A26YV CN681 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 Temperature Defrost temperature thermistor RT62 Outdoor heat exchanger temperature thermistor RT68 Fin tem...

Страница 44: ... A24YV MUZ A26YV Noise filter P C board E1 E1 E1 R V coil 230V AC 230V AC 50Hz Input 230V AC 50Hz Output Power board CN901 Electronic control board F912 FUSE 3 15A 250V NR63 VARISTOR F911 FUSE 1A 250V CN902 CN903 CN912 ...

Страница 45: ...sed 6 5 15V 7 5 15V Signal reception From electronic control P C board 5V DC pulse wave CN3 Fin temperature thermistor RT64 325 370V DC Output Connect to the compressor Voltage among phases 5V to 180V 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 cr...

Страница 46: ...onnector Sleeve Locking lever MUZ A18YV MUZ A24YV MUZ A26YV OUTDOOR UNIT E1 E1 E1 NOTE These photos are MUZ A26YV Other models are almost the same as MUZ A26YV 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 top panel 6 Remove the valve cover...

Страница 47: ...emove the inverter assembly 7 Disconnect all connectors and lead wires on the electronic control P C board 8 Remove the electronic control P C board from the inverter assembly 9 Remove the screws fixing the power board assembly 10 Disconnect all connectors and lead wires on the power board 11 Remove the power board from the inverter assembly 12 Disconnect all connectors and lead wires on the noise...

Страница 48: ...ermistor discharge temper ature thermistor and outdoor heat exchanger tem perature thermistor 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 Pull out the defrost thermistor from its holder Photo 6 5 Pull out the discharge temperature thermistor from its holder Photo 5 6 Pull out the outdoor heat exchanger t...

Страница 49: ...s until the pressure gauge shows 0 kg cm2 0 MPa 5 Detach the welded part of the suction and the discharge pipe connected with compressor Photo 9 6 Remove the compressor nuts 7 Remove the compressor 8 Detach the welded part of 4 way valve and pipe Photo 8 7 Removing the reactor 1 Remove the top panel Refer to 1 2 Disconnect the reactor lead wire 3 Remove the screws of the reactor and remove the rea...

Страница 50: ... 6 7 8 16 14 20 22 23 24 25 28 29 30 3 50 12 PARTS LIST MUZ A18YV MUZ A24YV MUZ A26YV 12 1 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS E1 E1 E1 11 15 17 18 21 27 26 These figures show about MUZ A26YV ...

Страница 51: ...ANDLE FAN GUARD HIGH PRESSURE SWITCH COMPRESSOR RUBBER SET COMPRESSOR RUBBER SET COMPRESSOR COMPRESSOR STOP VALVE GAS STOP VALVE GAS STOP VALVE LIQUID STOP VALVE LIQUID EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE COIL OIL SEPARATOR R V COIL 4 WAY VALVE VALVE COVER SERVICE PANEL OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD TERMIN...

Страница 52: ... KU TOKYO 100 8310 JAPAN C C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Feb 2007 No OB346 REVISED EDITION E 6 Distributed in Aug 2006 No OB346 REVISED EDITION D 6 Distributed in May 2006 No OB346 REVISED EDITION C 6 Distributed in Jul 2005 No OB346 REVISED EDITION B 6 Distributed in Jun 2004 No OB346 REVISED EDITION A 6 Distributed in Apr 2004 No OB346 6 Made in Japan New...

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