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CONTENTS

1. TECHNICAL CHANGES ··································· 3

2. PART NAMES AND FUNCTIONS ····················· 4

3. SPECIFICATION ················································ 6

4. NOISE CRITERIA CURVES ······························ 8

5. OUTLINES AND DIMENSIONS ······················ 10

6. WIRING DIAGRAM ·········································· 12

7. REFRIGERANT SYSTEM DIAGRAM ············· 13

8. SERVICE FUNCTIONS ··································· 14

9. MICROPROCESSOR CONTROL ··················· 16

10. TROUBLESHOOTING ····································· 24

11. DISASSEMBLY INSTRUCTIONS ···················· 38

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL

No. OBH589

REVISED EDITION-D

INDOOR UNIT

PARTS CATALOG (OBB589)

NOTE:

RoHS compliant products have <G> mark on the spec name plate.

Models

MSZ-EF18VEW

MSZ-EF22VEW

MSZ-EF25VEW

MSZ-EF35VEW

MSZ-EF42VEW

MSZ-EF50VEW

MSZ-EF18VEB

MSZ-EF22VEB

MSZ-EF25VEB

MSZ-EF35VEB

MSZ-EF42VEB

MSZ-EF50VEB

MSZ-EF18VES

MSZ-EF22VES

MSZ-EF25VES

MSZ-EF35VES

MSZ-EF42VES

MSZ-EF50VES

MSZ-EF18VE2W

ER1

MSZ-EF22VE2W

ER1

MSZ-EF25VE2W

ER1

MSZ-EF35VE2W

ER1

MSZ-EF42VE2W

ER1

MSZ-EF50VE2W

ER1

MSZ-EF18VE2B

ER1

MSZ-EF22VE2B

ER1

MSZ-EF25VE2B

ER1

MSZ-EF35VE2B

ER1

MSZ-EF42VE2B

ER1

MSZ-EF50VE2B

ER1

MSZ-EF18VE2S

ER1

MSZ-EF22VE2S

ER1

MSZ-EF25VE2S

ER1

MSZ-EF35VE2S

ER1

MSZ-EF42VE2S

ER1

MSZ-EF50VE2S

ER1

MXZ-D·VA Series (OBH626)
MXZ-8B Series (OCH480)

Please void OBH589 REVISED EDITION-C.

Revision D:

• The descriptions of the dimensions for MSZ-

EF18/22/25/35/42/50VE2W -

ER1

, MSZ-

EF18/22/25/35/42/50VE2B -

ER1

and

MSZ-EF18/22/25/35/42/50VE2S -

ER1

have been modified.

Outdoor unit service manual
MUZ-EF·VE(H) Series (OBH590)
MXZ-C·VA Series (OB584)

MSZ-EF·VEW
MSZ-EF·VEB
MSZ-EF·VES

Содержание MSZ-EF18VE2B

Страница 1: ...SZ EF50VEB E1 MSZ EF18VES E1 MSZ EF22VES E1 MSZ EF25VES E1 MSZ EF35VES E1 MSZ EF42VES E1 MSZ EF50VES E1 MSZ EF18VE2W E1 ER1 MSZ EF22VE2W E1 ER1 MSZ EF25VE2W E1 ER1 MSZ EF35VE2W E1 ER1 MSZ EF42VE2W E1 ER1 MSZ EF50VE2W E1 ER1 MSZ EF18VE2B E1 ER1 MSZ EF22VE2B E1 ER1 MSZ EF25VE2B E1 ER1 MSZ EF35VE2B E1 ER1 MSZ EF42VE2B E1 ER1 MSZ EF50VE2B E1 ER1 MSZ EF18VE2S E1 ER1 MSZ EF22VE2S E1 ER1 MSZ EF25VE2S E1 ...

Страница 2: ...nly 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 provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions...

Страница 3: ...ES E1 MSZ EF50VE2S E1 1 Front panel has been changed 2 Panel assembly has been changed 3 Remote controller has been changed MSZ EF18VE2W ER1 MSZ EF22VE2W ER1 MSZ EF25VE2W ER1 MSZ EF35VE2W ER1 MSZ EF42VE2W ER1 MSZ EF50VE2W ER1 MSZ EF18VE2B ER1 MSZ EF22VE2B ER1 MSZ EF25VE2B ER1 MSZ EF35VE2B ER1 MSZ EF42VE2B ER1 MSZ EF50VE2B ER1 MSZ EF18VE2S ER1 MSZ EF22VE2S ER1 MSZ EF25VE2S ER1 MSZ EF35VE2S ER1 MSZ ...

Страница 4: ...ote controller 2 Wireless remote controller 1 Felt tape For left or left rear piping 1 Soft dry cloth VEB type only 1 Operation indicator lamp Remote control receiving section Emergency operation switch Horizontal vane Air inlet Air filter Nano platinum filter Air cleaning filter Electrostatic anti allergy enzyme filter option Heat exchanger Front panel Air outlet Remote controller MSZ EF18VEW MSZ...

Страница 5: ...less remote controller 1 Felt tape For left or left rear piping 1 Soft dry cloth VEB type only 1 Air cleaning filter 2 Remote controller MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35VE2B MSZ EF42VE2B MSZ EF50VE2B MSZ EF18VE2S MSZ EF22VE2S MSZ EF25VE2S MSZ EF35VE2S MSZ EF42VE2S MSZ EF50VE2S Operation indicator lamp Remo...

Страница 6: ...irection 5 Airfl ow Cooling Super High m3 h 630 High 498 Med 378 Low 276 Silent 240 Heating Super High m3 h 714 762 High 534 Med 372 Low 276 Silent 240 Sound level Cooling Super High dB A 42 High 36 Med 29 Low 23 24 Silent 21 Heating Super High dB A 45 46 High 37 38 Med 29 30 Low 24 Silent 21 Fan speed Cooling Super High rpm 1 200 High 990 Med 800 Low 630 Silent 570 Heating Super High rpm 1 330 1 ...

Страница 7: ...oling Super High m3 h 618 660 High 534 558 Med 462 474 Low 396 408 Silent 348 Heating Super High m3 h 762 792 High 594 666 Med 468 540 Low 378 438 Silent 330 384 Sound level Cooling Super High dB A 42 43 High 39 40 Med 35 36 Low 31 33 Silent 28 30 Heating Super High dB A 48 49 High 41 43 Med 35 37 Low 30 33 Silent 28 30 Fan speed Cooling Super High rpm 1 180 1 240 High 1 050 1 080 Med 930 950 Low ...

Страница 8: ...NE Super High FAN SPEED HEATING 42 46 NC 10 MSZ EF35VEW MSZ EF35VEB MSZ EF35VES 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED HEATING 42 45 NC 10 NOISE CRITERIA CURVES 4 MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ ...

Страница 9: ...URE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED HEATING 43 49 NC 10 MSZ EF50VEW MSZ EF50VEB MSZ EF50VES 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED...

Страница 10: ...52 18 22 25 35 42 ø12 7 50 Drain hose Insulation ø28 O D Connected part ø16 O D OUTLINES AND DIMENSIONS 5 MSZ EF18VEW MSZ EF22VEW MSZ EF25VEW MSZ EF35VEW MSZ EF42VEW MSZ EF50VEW MSZ EF18VEB MSZ EF22VEB MSZ EF25VEB MSZ EF35VEB MSZ EF42VEB MSZ EF50VEB MSZ EF18VES MSZ EF22VES MSZ EF25VES MSZ EF35VES MSZ EF42VES MSZ EF50VES OBH589D ...

Страница 11: ...EF35VE2B MSZ EF42VE2B MSZ EF50VE2B MSZ EF18VE2S MSZ EF22VE2S MSZ EF25VE2S MSZ EF35VE2S MSZ EF42VE2S MSZ EF50VE2S Unit mm Piping Insulation ø37 O D Liquid line ø6 35 0 5 m Flared connection ø6 35 Gas line ø9 52 0 43 m Flared connection ø9 52 18 22 25 35 42 ø12 7 50 Drain hose Insulation ø28 O D Connected part ø16 O D OBH589D ...

Страница 12: ...B MSZ EF42VEB MSZ EF50VEB MSZ EF18VES MSZ EF22VES MSZ EF25VES MSZ EF35VES MSZ EF42VES MSZ EF50VES MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35VE2B MSZ EF42VE2B MSZ EF50VE2B MSZ EF18VE2S MSZ EF22VE2S MSZ EF25VE2S MSZ EF35VE2S MSZ EF42VE2S MSZ EF50VE2S OBH589D ...

Страница 13: ...erant flow in heating Unit mm REFRIGERANT SYSTEM DIAGRAM 7 MSZ EF18VEW MSZ EF22VEW MSZ EF25VEW MSZ EF35VEW MSZ EF42VEW MSZ EF50VEW MSZ EF18VEB MSZ EF22VEB MSZ EF25VEB MSZ EF35VEB MSZ EF42VEB MSZ EF50VEB MSZ EF18VES MSZ EF22VES MSZ EF25VES MSZ EF35VES MSZ EF42VES MSZ EF50VES MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35...

Страница 14: ...tion put back the batteries then press the RESET button Table 1 1 unit operation 2 units operation 3 units operation 4 units operation No 1 unit No modification Same as at left Same as at left Same as at left No 2 unit Solder J1 Same as at left Same as at left No 3 unit Solder J2 Same as at left No 4 unit Solder both J1 and J2 How to set the remote controller exclusively for particular indoor unit...

Страница 15: ...ome air conditioners are connected to the same supply system if they are operated before power failure the starting current of all the compressors may flow simultaneously at restart Therefore the special counter measures are required to prevent the main voltage drop or the rush of the starting current by adding to the system that allows the units to start one by one JR07 IC171 CN104 CN112 BZ Indoo...

Страница 16: ...on RESET button i save button VANE CONTROL button MSZ EF18VEW MSZ EF22VEW MSZ EF25VEW MSZ EF35VEW MSZ EF42VEW MSZ EF50VEW MSZ EF18VEB MSZ EF22VEB MSZ EF25VEB MSZ EF35VEB MSZ EF42VEB MSZ EF50VEB MSZ EF18VES MSZ EF22VES MSZ EF25VES MSZ EF35VES MSZ EF42VES MSZ EF50VES MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35VE2B MSZ ...

Страница 17: ...SZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35VE2B MSZ EF42VE2B MSZ EF50VE2B MSZ EF18VE2S MSZ EF22VE2S MSZ EF25VE2S MSZ EF35VE2S MSZ EF42VE2S MSZ EF50VE2S Signal transmitting section Operation display section Temperature buttons OPERATE STOP ON OFF button Indication of remote controller model is on back FAN SPEED CONTROL button OPERA...

Страница 18: ...R lamp of the indoor unit turns on with a beep tone 2 Select HEAT mode with OPERATION SELECT button 3 Press TEMPERATURE buttons TEMP or button to select the desired temperature The setting range is 16 31 C 1 Cold air prevention control When the compressor is not operating or is starting and the temperature of indoor heat exchanger and or the room tem perature is low or when defrosting is being don...

Страница 19: ...standard position the vane moves until it touches the vane stopper Then the vane is set to the selected angle Confirming of standard position is performed in the following cases a When the operation starts or finishes including timer operation b When the test run starts c When standby mode only during multi system operation starts or finishes 4 VANE AUTO mode In VANE AUTO mode the microprocessor a...

Страница 20: ...N TIMER button To release OFF timer press OFF TIMER button TIMER is cancelled and the display of set time disappears Example 1 The current time is 8 00 PM The unit turns off at 11 00 PM and on at 6 00 AM OFF timer and ON timer can be used in combination The timer of the set time that is reached first will operate first and display shows the order of OFF timer and ON timer operation PROGRAM TIMER E...

Страница 21: ...ll days can be selected NOTE The simple ON OFF timer setting is available while the weekly timer is on In this case the ON OFF timer has priority over the weekly timer the weekly timer operation will start again after the simple ON OFF timer is complete When the weekly timer is set temperature cannot be set to 10 C The weekly timer operation and i save operation cannot be used together 1 How to se...

Страница 22: ...ng mode blinks 2 Press or buttons to view the setting of the particular day or number 3 Press button to exit the weekly timer setting NOTE When all days of the week are selected to view the settings and a different setting is included among them will be displayed 4 Press button to complete and transmit the weekly timer setting which was blink ing goes out and the current time will be displayed 9 9...

Страница 23: ...coil frost prevention works even in the test run or the emergency operation In the test run or emergency operation the horizontal vane operates in VANE AUTO mode Emergency operation continues until EMERGENCY OPERATION switch is pressed once or twice or the unit receives any signal from the remote controller In the latter case normal operation will start NOTE Do not press EMERGENCY OPERATION switch...

Страница 24: ...n and the components for bursting and discoloration 4 When troubleshooting Refer to 10 2 10 3 and 10 4 4 How to replace batteries Weak batteries may cause the remote controller malfunction In this case replace the batteries to operate the remote controller normally Lead wiring Housing point Incorrect Correct TROUBLESHOOTING 10 NOTE 1 If RESET button is not pressed the remote controller may not ope...

Страница 25: ... is displayed with the remote controller headed towards the indoor unit Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted 4 Release the failure mode recall function according to Releasing the failure mode recall function mentioned above Yes Blinks No OFF NOTE 1 Make sure to release the failure mode recall function after it is set up otherwise the unit cannot oper...

Страница 26: ...the main indoor coil ther mistor the sub indoor coil thermistor 10 7 3 time flash 2 5 second OFF Serial signal The serial signal from outdoor unit is not re ceived for a maximum of 6 minutes Refer to 10 6 How to check miswiring and serial signal error 11 time flash 2 5 second OFF Indoor fan motor The rotational frequency feedback signal is not emitted for the 12 seconds after the indoor fan motor ...

Страница 27: ... Run operation means the operation within 30 minutes af ter EMERGENCY OPERATION switch is pressed Refer to outdoor unit service manual Left lamp Flash on and off at 0 5 sec ond intervals Cause Indoor Outdoor unit Miswiring or trouble of serial signal Left lamp 2 time flash Cause Indoor unit Trouble of room temperature indoor coil thermistor Left lamp 3 time flash Cause Indoor unit Trouble of indoo...

Страница 28: ...vercurrent protection or start up failure protection within 1 minute after start up Refer to How to check of in verter compressor Refer to outdoor unit service manual Check the stop valve 6 Outdoor thermistors Left lamp flashes 6 time flash 2 5 second OFF The outdoor thermistors short or open circuit during the compressor operation Refer to Check of outdoor thermistor Refer to outdoor unit service...

Страница 29: ...EB MSZ EF35VEB MSZ EF42VEB MSZ EF50VEB MSZ EF18VES MSZ EF22VES MSZ EF25VES MSZ EF35VES MSZ EF42VES MSZ EF50VES MSZ EF18VE2W MSZ EF22VE2W MSZ EF25VE2W MSZ EF35VE2W MSZ EF42VE2W MSZ EF50VE2W MSZ EF18VE2B MSZ EF22VE2B MSZ EF25VE2B MSZ EF35VE2B MSZ EF42VE2B MSZ EF50VE2B MSZ EF18VE2S MSZ EF22VE2S MSZ EF25VE2S MSZ EF35VE2S MSZ EF42VE2S MSZ EF50VE2S Part name Check method and criterion Figure Room temper...

Страница 30: ...pressed the voltage measured at 2 above goes 0 VDC although the indoor P C board is normal Does the voltage between CN211 and on the power P C board rise to the range of 3 to 6 VDC within 12 seconds after EMERGENCY OPERATION switch is pressed Replace the indoor fan motor Yes No The indoor fan motor error has occurred and the indoor fan repeats 12 second ON and 30 second OFF 3 times and then stops ...

Страница 31: ...tart type within the range of 1 m 2 Yes No Reinstall the unit away from lights Attach a filter on receiving part Replace the indoor electronic control P C board Including the receiver 1 Look at the image of the signal transmitting section of the remote controller through the monitor of a digital camera or a camera phone It is normal if the LED of the signal transmitting section lights up when the ...

Страница 32: ...11 3 Measure the resistance of reactor L111 on the indoor power P C board No No Replace the indoor power P C board and the indoor fan motor Replace the indoor electronic control P C board Measure the resistance of the vane motor coil Refer to 10 5 Short circuit Replace the vane motor and the indoor electronic control P C board 1 The fan motor connector s lead wire is red whereas is black 2 Connect...

Страница 33: ...or electronic control P C board No Does the indoor OPERATION INDICATOR lamp left blink continuously 6 minutes after the emergency operation starts No Does the outdoor LED light up Replace the indoor electronic control P C board Replace the indoor power P C board Yes Yes Does the outdoor LED blink 6 times Yes Confirm that the thermostat is OFF and wiring is not loose No Does DC 6V or more occur bet...

Страница 34: ...ick 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 of the residual voltage of smoothing capacitor Is there amplitude of 10 to 20 VDC between 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 damage of the wire ...

Страница 35: ...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 36: ...C Resistance kΩ Indoor electronic control P C board Indoor power P C board Fuse F11 Varistor NR11 Indoor fan motor CN211 325 VDC GND high voltage DC 15 VDC 3 6 VDC 0 or 15 VDC Connector to terminal block CN201 Connector to indoor electronic control P C board CN202 Receiver board Display board Switch board Reactor L111 5 VDC 12 VDC GND Timer short mode point JPG JPS Refer to 8 1 To disable Auto res...

Страница 37: ... power P C board Fuse F11 Varistor NR11 Indoor fan motor CN211 325 VDC GND high voltage DC 15 VDC 3 6 VDC 0 or 15 VDC Connector to terminal block CN201 Connector to indoor electronic control P C board CN202 Receiver board Display board Switch board Reactor L111 5 VDC 12 VDC GND Timer short mode point JPG JPS Refer to 8 1 To disable Auto restart function cut the Jumper wire to JR77 Refer to 8 4 Eme...

Страница 38: ...d of the panel and hold the lower part of the left end of the panel 5 Pull the panel slightly toward you and then remove the panel by pushing it upward Photo 1 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...

Страница 39: ...ndoor outdoor connecting wire 3 Remove the indoor electrical box Refer to 2 4 Remove the earth wire connected to the electrical box from the indoor power P C board 5 Disconnect the following connectors Indoor electronic power P C board CN201 Terminal block CN202 To the indoor electronic control P C board 6 Remove the indoor power P C board 7 Disconnect the following connectors Indoor electronic co...

Страница 40: ...play P C board holder 6 Pull out the drain hose from the nozzle assembly and remove the nozzle assembly 7 Remove the vane motors Refer to 5 Photo 4 5 Removing the horizontal vane motor 1 Remove the nozzle assembly Refer to 4 2 Remove the screws of the vane motor unit cover and pull out the vane motor unit 3 Remove the screws of the vane motor unit 4 Disconnect the connector from the vane motor 5 R...

Страница 41: ...d the motor band 7 Release the hooks of the motor band and remove the motor band Pull out the indoor fan motor 8 Remove the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it Photo 5 9 Remove the screws fixing the left side and the upper right side of the heat exchanger Photo 7 Photo 8 10 Lift the heat exchanger and pull out ...

Страница 42: ... shape part Position and procedure for mounting the clip shape part Copyright 2010 MITSUBISHI ELECTRIC CORPORATION Distributed in Mar 2014 No OBH589 REVISED EDITION D Distributed in Jan 2014 No OBH589 REVISED EDITION C Distributed in Nov 2012 No OBH589 REVISED EDITION B Distributed in Mar 2011 No OBH589 REVISED EDITION A Distributed in Nov 2010 No OBH589 Made in Japan New publication effective Mar...

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