Mitsubishi Electric MSZ-GE22VA-A1 Page 2 Service Manual Download | Manualshive

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2

MSZ-GE22VA -

A1

MSZ-GE25VA -

A1

MSZ-GE33VA -

A1

MSZ-GE35VA -

A1

MSZ-GE42VA -

A1

MSZ-GE50VA -

A1

MSZ-GE60VA -

A1

MSZ-GE71VA -

A1

MSZ-GE80VA -

A1

1. New model

TECHNICAL CHANGES

1

Revision A :

•

MSZ-GE60VA-

A1

, MSZ-GE71VA-

A1

and MSZ-GE80VA-

A1

have been added.

Revision B :

•

MSZ-GE33VA-

A1

and MSZ-GE42VA-

A1

have been added.

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 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.

Revision C:

•

MSZ-GE35VA2-

A1

, MSZ-GE50VA2-

A1

and MSZ-GE80VA2-

A1

have been added.

Revision D:

•

MSZ-GE25VAD-

A1

, MSZ-GE35VAD-

A1

, MSZ-GE42VAD-

A1

, MSZ-GE50VAD-

A1

, MSZ-GE60VAD-

A1

, MSZ-GE71VAD-

A1

and MSZ-GE80VAD-

A1

have been added.

MSZ-GE35VA -

A1

MSZ-GE35VA2 -

A1

MSZ-GE50VA -

A1

MSZ-GE50VA2 -

A1

1. Indoor model name has been changed.

MSZ-GE80VA -

A1

MSZ-GE80VA2 -

A1

1. Indoor model name has been changed.
2. Indoor electronic control P.C. board has been changed.

MSZ-GE25VA -

A1

MSZ-GE25VAD -

A1

MSZ-GE35VA2 -

A1

MSZ-GE35VAD -

A1

MSZ-GE42VA -

A1

MSZ-GE42VAD -

A1

MSZ-GE50VA2 -

A1

MSZ-GE50VAD -

A1

1. Indoor electronic control P.C. board has been changed.
2. V.A clamp has been changed.

MSZ-GE60VA -

A1

MSZ-GE60VAD -

A1

MSZ-GE71VA -

A1

MSZ-GE71VAD -

A1

MSZ-GE80VA2 -

A1

MSZ-GE80VAD -

A1

1. Indoor electronic control P.C. board has been changed.
2. Fan guard has been added.
3. Fan operation has been added.

MSZ-GE22VA -

A1

MSZ-GE22VAD -

A1

1. Indoor electronic control P.C. board has been changed.

Revision E:

•

MSZ-GE22VAD-

A1

has been added.

OBH531E

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Summary of Contents for MSZ-GE22VA-A1

Page 1: ...VA A1 MSZ GE50VA A1 MSZ GE22VAD A1 MSZ GE50VA2 A1 MSZ GE25VA A1 MSZ GE50VAD A1 MSZ GE25VAD A1 MSZ GE60VA A1 MSZ GE33VA A1 MSZ GE60VAD A1 MSZ GE35VA A1 MSZ GE71VA A1 MSZ GE35VA2 A1 MSZ GE71VAD A1 MSZ GE35VAD A1 MSZ GE80VA A1 MSZ GE42VA A1 MSZ GE80VA2 A1 MSZ GE42VAD A1 MSZ GE80VAD A1 No OBH531 REVISED EDITION E Please void OBH531 REVISED EDITION D MSZ GE22VA MSZ GE22VAD MSZ GE25VA MSZ GE25VAD MSZ GE...

Page 2: ...VA2 A1 MSZ GE50VA2 A1 and MSZ GE80VA2 A1 have been added Revision D MSZ GE25VAD A1 MSZ GE35VAD A1 MSZ GE42VAD A1 MSZ GE50VAD A1 MSZ GE60VAD A1 MSZ GE71VAD A1 and MSZ GE80VAD A1 have been added MSZ GE35VA A1 MSZ GE35VA2 A1 MSZ GE50VA A1 MSZ GE50VA2 A1 1 Indoor model name has been changed MSZ GE80VA A1 MSZ GE80VA2 A1 1 Indoor model name has been changed 2 Indoor electronic control P C board has been...

Page 3: ...GE22VAD MSZ GE25VA MSZ GE25VAD MSZ GE33VA MSZ GE35VA MSZ GE35VA2 MSZ GE35VAD MSZ GE42VA MSZ GE42VAD MSZ GE50VA MSZ GE50VA2 MSZ GE50VAD PART NAMES AND FUNCTIONS 2 MSZ GE60VA MSZ GE71VA MSZ GE80VA MSZ GE80VA2 Operation indicator lamp Emergency operation switch E O SW Horizontal vane Vertical vane Air outlet Fan Air filter Nano platinum filter Air inlet Heat exchanger Front panel Air cleaning filter ...

Page 4: ...holder 1 1 Fixing screw for 3 5 16 mm Black 2 2 Battery AAA for remote controller 2 2 Wireless remote controller 1 1 Felt tape For left or left rear piping 1 1 Air cleaning filter 2 2 MSZ GE60VAD MSZ GE71VAD MSZ GE80VAD Operation indicator lamp Emergency operation switch E O SW Horizontal vane Vertical vane Air outlet Fan Air filter Nano platinum filter Air inlet Heat exchanger Front panel Air cle...

Page 5: ...uper High LONG POWERFUL Super High dB A 42 43 High 36 Med 29 30 Low 21 22 Quiet 19 Heating Super High LONG POWERFUL Super High dB A 42 43 High 36 Med 29 30 Low 21 22 Quiet 19 Fan speed Cooling Super High LONG POWERFUL Super High rpm 1 020 1 120 High 860 Med 670 Low 530 Quiet 470 Heating Super High LONG POWERFUL Super High rpm 1 040 High 860 700 2 Med 670 610 2 Low 530 Quiet 470 Fan speed regulator...

Page 6: ... POWERFUL Super High dB A 46 49 High 40 44 Med 35 38 Low 30 33 Quiet 26 28 Heating Super High LONG POWERFUL Super High dB A 46 48 High 40 43 Med 35 37 Low 30 33 Quiet 26 28 Fan speed Cooling Super High LONG POWERFUL Super High rpm 1 120 1 280 High 950 1 060 Med 810 890 Low 680 750 Quiet 600 650 690 2 Heating Super High LONG POWERFUL Super High rpm 1 140 1 240 High 950 930 2 1 080 930 2 Med 810 890...

Page 7: ...52 53 LONG POWERFUL Super High dB A 49 High 45 Med 41 Low 37 Quiet 29 30 Heating Super High 52 LONG POWERFUL Super High dB A 49 High 45 Med 41 Low 37 Quiet 29 30 Fan speed Cooling Super High 1 260 1 280 1 330 1 300 1 330 1 300 LONG POWERFUL Super High rpm 1 070 1 090 1 110 1 140 1 110 1 140 High 940 960 980 1 010 980 1 010 Med 830 850 870 900 870 900 Low 720 740 780 800 780 800 Quiet 640 660 680 7...

Page 8: ... 15AL250V Horizontal vane motor MV MV1 12 VDC Vertical vane motor MSZ GE60VA MSZ GE71VA MSZ GE60VAD MSZ GE70VAD MSZ GE80VA MSZ GE80VA2 MSZ GE80VAD MV2 12 VDC Varistor NR11 S10K300E2K1 ERZV10D471 MSZ GE22 25 33 35 42 50 ERZV14D471 MSZ GE60 71 80 Terminal block TB 3P OBH531E ...

Page 9: ...0μPa BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED HEATING 42 42 NC 10 NOISE CRITERIA CURVES 4 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 0 dB 20μPa BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED HEATING 49 48 NC 10 MSZ GE50VA MSZ GE50VA2 MSZ GE50...

Page 10: ... SPEED HEATING 49 49 NC 10 OCTAVE BAND SOUND PRESSURE LEVEL 0 dB 20μPa 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 BAND CENTER FREQUENCIES Hz COOLING FUNCTION SPL dB A LINE Super High FAN SPEED HEATING 49 49 NC 10 OCTAVE BAND SOUND PRESSURE LEVEL 0 dB 20μPa 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...

Page 11: ...28 O D Connected part ø16 O D OUTLINES AND DIMENSIONS 5 1090 5 1100 45 238 5 258 5 3 280 225 225 129 239 5 281 44 49 5 500 5 439 5 199 5 199 5 65 63 76 843 181 65 65 30 63 60 193 18 65 67 63 325 3 100 125 160 110 70 238 5 210 21 5 184 12 110 5 Piping Insulation Ø50 O D Liquid line Ø9 52 0 5m Flared connection Ø9 52 Gas line Ø12 0 43m Flared connection Ø15 88 Drain hose Insulation Ø28 Connected par...

Page 12: ...12 MSZ GE22VA MSZ GE25VA MSZ GE33VA MSZ GE35VA MSZ GE35VA2 WIRING DIAGRAM 6 MSZ GE42VA MSZ GE50VA MSZ GE50VA2 MSZ GE22VAD MSZ GE25VAD MSZ GE35VAD OBH531E ...

Page 13: ...13 MSZ GE60VA MSZ GE71VA MSZ GE80VA MSZ GE80VA2 MSZ GE42VAD MSZ GE50VAD MSZ GE60VAD MSZ GE71VAD MSZ GE80VAD OBH531E ...

Page 14: ... ø12 7 MSZ GE50 with heat insulator Refrigerant pipe ø6 35 with heat insulator Indoor coil thermistor RT12 main Indoor coil thermistor RT13 sub Refrigerant flow in cooling Refrigerant flow in heating Unit mm REFRIGERANT SYSTEM DIAGRAM 7 Indoor heat exchanger Flared connection Room temperature thermistor RT11 Flared connection Refrigerant pipe ø15 88 with heat insulator Refrigerant pipe ø6 35 MSZ G...

Page 15: ... 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 After you turn the breaker ON the first remote controller that sends the signal to the indoor unit will be regarded as the remote controller for the indoor unit The indoor unit will only accept the signal from the remote contro...

Page 16: ...ter the indoor unit was operated with the remote controller If main power is turned OFF or a power failure occurs while AUTO START STOP timer is active the timer setting is can celled If the unit has been off with the remote controller before power failure the auto restart function does not work as the power button of the remote controller is OFF To prevent breaker OFF due to the rush of starting ...

Page 17: ...SZ GE25VAD MSZ GE33VA MSZ GE35VA MSZ GE35VA2 MSZ GE35VAD MSZ GE42VA MSZ GE42VAD MSZ GE50VA MSZ GE50VA2 MSZ GE50VAD MSZ GE60VA MSZ GE71VA MSZ GE80VA MSZ GE80VA2 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 OPERATION SELECT button ECONO COOL button POWERFUL button CLOCK S...

Page 18: ...ess TEMPERATURE buttons TOO WARM or TOO COOL button MSZ 22 25 33 35 42 50 TEMP or button MSZ GE60 71 80 to select the desired temperature The setting range is 16 31 C 1 Coil frost prevention The compressor operational frequency is controlled by the temperature of the indoor heat exchanger to prevent the coil from frosting When the temperature of indoor heat exchanger becomes too low the coil frost...

Page 19: ...tton OPERATION INDICATOR lamp of the indoor unit turns ON with a beep tone 2 Select FAN mode with OPERATION SELECT button 3 Select the desired fan speed When AUTO it becomes Low Only indoor fan operates Outdoor unit does not operate 9 5 AUTO CHANGE OVER AUTO MODE OPERATION Once desired temperature is set unit operation is switched automatically between COOL and HEAT operation Mode selection 1 Init...

Page 20: ...l operation When ECONO COOL button is pressed in COOL mode set temperature is automatically set 2 C higher by the microprocessor However the temperature on the LCD screen on the remote controller is not changed MSZ GE60 71 80 Also the horizontal vane swings in various cycle SWING operation makes you feel cooler than set temperature So even though the set temperature is higher the air conditioner c...

Page 21: ...NTROL button the vertical vane swings horizontally The remote controller displays Swing mode is cancelled when WIDE MODE CONTROL button is pressed once again 9 7 TIMER OPERATION 1 How to set the time 1 Check that the current time is set correctly NOTE Timer operation will not work without setting the current time Initially 0 00 blinks at the current time display of TIME MONITOR so set the current ...

Page 22: ... 33 MSZ GE35 42 50 9 8 WEEKLY TIMER OPERATION MSZ GE60 71 80 A maximum of 4 ON or OFF timers can be set for individual days of the week A maximum of 28 ON or OFF timers can be set for a week Make sure that the current time and day are set correctly 1 Press button to enter the weekly timer setting mode 2 Press and buttons to select setting day and number blinks Pressing selects the day of the week ...

Page 23: ...rned OFF 2 Checking weekly timer setting 2 Checking weekly timer setting 1 Press button to enter the weekly timer setting 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 NOTE Press button...

Page 24: ... press EMERGENCY OPERATION switch during normal operation Operation mode COOL HEAT Set temperature 24 C Fan speed Med Horizontal vane Auto The operation mode is indicated by the Operation Indicator lamp as following Operation Indicator lamp EMERGENCY COOL EMERGENCY HEAT STOP Lighted Not lighted 9 9 i save OPERATION 1 How to set i save operation 1 Press OPERATE STOP ON OFF button 2 Select COOL HEAT...

Page 25: ...edure 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 flashing ON and OFF before starting serv ice work 2 Before servicing check that the connector and terminal are connected properly 3 When the P C board seems to be defective check the copper foil pattern for disconnectio...

Page 26: ...installation of the horizontal vane turn OFF the power supply In procedure lock the stoppers until they click into place MSZ GE60VA MSZ GE71VA MSZ GE80VA MSZ GE80VA2 Lock Check the upper and the lower vane MSZ GE22VA MSZ GE22VAD MSZ GE25VA MSZ GE25VAD MSZ GE33VA MSZ GE35VA MSZ GE35VA2 MSZ GE35VAD MSZ GE42VA MSZ GE42VAD MSZ GE50VA MSZ GE50VA2 MSZ GE50VAD MSZ GE60VAD MSZ GE71VAD MSZ GE80VAD Lock Che...

Page 27: ...d identify the abnormal point by referring to the indoor unit failure mode table Refer to 10 2 2 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 The outdoor unit is abnormal Check the...

Page 28: ...of the main indoor coil ther mistor the sub indoor coil thermistor 10 7 2 3 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...

Page 29: ...ial signal Upper lamp 2 time flash Cause Indoor unit Trouble of room temperature indoor coil thermistor Upper lamp 3 time flash Cause Indoor unit Trouble of indoor fan motor Upper lamp 4 time flash Cause Indoor unit Trouble of indoor unit control system Upper lamp 5 time flash Cause Outdoor unit Outdoor power system abnormality Upper lamp 6 time flash Cause Outdoor unit Trouble of thermistor in ou...

Page 30: ...ctronic control P C board Replace the indoor electronic control P C board 5 Outdoor power sys tem Upper lamp flashes 5 time flash 2 5 second OFF It consecutively occurs 3 times that the com pressor stops for overcurrent 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 O...

Page 31: ...ervice manual 10 5 TROUBLE CRITERION OF MAIN PARTS MSZ GE22VA MSZ GE22VAD MSZ GE25VA MSZ GE25VAD MSZ GE33VA MSZ GE35VA MSZ GE35VA2 MSZ GE35VAD MSZ GE42VA MSZ GE42VAD MSZ GE50VA MSZ GE50VA2 MSZ GE50VAD MSZ GE60VA MSZ GE60VAD MSZ GE71VA MSZ GE71VAD MSZ GE80VA MSZ GE80VA2 MSZ GE80VAD Part name Check method and criterion Figure Room temperature thermistor RT11 Indoor coil thermistor RT12 RT13 Measure ...

Page 32: ...etween 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 Measure the voltage between CN211 and while the fan motor is rotating Replace the indoor power P C board and ...

Page 33: ...12 seconds passes after EMERGENCY OPERATION switch is pressed the voltage measured at 2 above goes 0 V DC although the indoor P C board is normal Does the voltage between CN211 and on the indoor electronic control 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 The indoor fan motor error has occurred and the i...

Page 34: ...lay on the remote controller visible Remove the batteries then set them back and press RESET button Refer to 10 1 4 Check if the unit operates with the remote controller Yes No Turn ON a radio to AM and press OP ERATE STOP ON OFF button on the remote controller 1 Is noise heard from radio Yes No Replace the remote controller Are there any fluorescent lights of inverter or rapid start type within t...

Page 35: ...f the tester to fan motor connector s lead wire and to lead wire otherwise the resistance cannot be measured properly 3 Please replace the fuse after removing the indoor terminal P C board from the electrical box Indoor electronic control P C board JPG GND CN10A 12 VDC 5 VDC Indoor terminal P C board Indoor power P C board Fuse F11 Varistor NR11 CN211 R111 MSZ GE22 25 33 35 L111 MSZ GE42 50 Measur...

Page 36: ... CN211 and of the indoor fan motor connector Short circuit Replace the indoor fan motor Short circuit Replace the horizontal vane motor and the indoor electronic control P C board Turn OFF the power supply Check both parts side and pattern side of the indoor electronic control P C board visually Replace the varistor NR11 and fuse F11 Are the varistor NR11 burnt and the fuse F11 blown Be sure to ch...

Page 37: ...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 Yes Check the wiring If there are any error of the indoor outdoor connecting wire such as the damage of the wire intermediate connection and or poor contact to the terminal block replace the indoor outdoor connecting wire No Is there 2 VDC or less bet...

Page 38: ...e more if the indoor outdoor connecting wire is not miswiring Short circuit outdoor terminal block S2 and S3 1 B 1 Miswiring may damage indoor electronic control P C board during the operation Be sure to confirm the wiring is correct before the opera tion starts Turn ON the power supply Does the LED on the inverter P C board or the outdoor electronic control P C board repeat 3 6 second OFF and 0 8...

Page 39: ...Refer to 10 1 5 Turn ON the power supply Are all lamps flashing Yes No Turn OFF the power supply To check the continuity of the interlock switch Fan measure the resistance of connector connected to CN1R1 on the indoor electronic control P C board Is there resistance 0 Ω Yes No Replace the interlock switch Fan Replace the indoor electronic control P C board OK Turn OFF the power supply OBH531E ...

Page 40: ...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...

Page 41: ...ector to indoor electronic control P C board CN20A 5 VDC 12 VDC GND Resistor R111 Indoor fan motor CN211 325 VDC GND high voltage DC 15 VDC 3 6 VDC 0 or 15 VDC MSZ GE42VA MSZ GE42VAD MSZ GE50VA MSZ GE50VA2 MSZ GE50VAD Indoor terminal P C board Indoor power P C board Please replace the fuse after removing the indoor terminal P C board from the electrical box Fuse F11 Varistor NR11 Terminal block Co...

Page 42: ... SW1 2 Indoor electronic control P C board MSZ GE22VA MSZ GE25VA MSZ GE33VA MSZ GE35VA MSZ GE35VA2 MSZ GE42VA MSZ GE50VA MSZ GE50VA2 GND Interlock switch FAN CN1R1 Indoor electronic control P C board MSZ GE22VAD MSZ GE25VAD MSZ GE35VAD MSZ GE42VAD MSZ GE50VAD Timer short mode point JPG JPS Refer to 8 1 Room temperature thermistor RT11 CN111 Indoor coil thermistor RT12 CN112 Vane motor CN151 Connec...

Page 43: ...tart function solder the Jumper wire to JR07 Refer to 8 3 Vane motor CN151 CN152 5 VDC 12 VDC Room temperature thermistor RT11 CN111 Indoor coil thermistor RT12 RT13 CN112 Interlock switch FAN CN1R1 3 Indoor electronic control P C board Indoor terminal P C board Power monitor receiver SW P C board MSZ GE60VA MSZ GE71VA MSZ GE80VA MSZ GE80VA2 Room temperature thermistor RT11 Indoor coil thermistor ...

Page 44: ... NR11 Terminal block To disable Auto restart function cut the Jumper wire to JR77 Refer to 8 3 Vane motor CN151 CN152 5 VDC 12 VDC Room temperature thermistor RT11 CN111 Indoor coil thermistor RT12 RT13 CN112 Interlock switch FAN CN1R1 MSZ GE60VAD MSZ GE71VAD MSZ GE80VAD Room temperature thermistor RT11 Indoor coil thermistor RT12 RT13 Temperature C Resistance kΩ Fuse F11 Please replace the fuse a...

Page 45: ...it upward Photo 1 45 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 detach...

Page 46: ...erature thermistor from the indoor electronic control P C board Photo 2 Photo 3 3 Remove the indoor power P C board the indoor terminal P C board and the electrical box 1 Remove the panel Refer to 1 and the corner box 2 Remove the indoor outdoor connecting wire Refer to 2 3 Remove the earth wire connected to the indoor heat exchanger from the electrical box 4 Unhook first the lower then the upper ...

Page 47: ...ut the drain hose from the nozzle assembly and remove the nozzle assembly 6 Remove the interlock switch Photo 4 Photo 5 5 Removing the horizontal vane motor 1 Remove the nozzle assembly Refer to 4 2 Remove the screws of the horizontal vane motor unit 3 Disconnect the connector from the horizontal vane motor 4 Remove the screws of the horizontal vane motor 5 Remove the horizontal vane motor from th...

Page 48: ...or band 6 Release the hooks of the motor band 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 9 9 Remove the screws fixing the left side of the heat exchanger 10 Lift the heat exchanger and pull out the line flow fan to the lower left Photo 9 Photo 6 Ph...

Page 49: ...RATING PROCEDURE PHOTOS 1 Removing the panel 1 Remove the horizontal vanes 2 Remove the screw caps of the panel Remove the screws of the panel 3 Hold the lower part of both ends of the panel and pull it slightly toward you and then remove the panel by pushing it upward Photo 1 49 Screws of the panel Front panel Horizontal vanes OBH531E ...

Page 50: ...the screw of the terminal block on the indoor terminal P C board 9 Remove the indoor terminal P C board and the indoor electronic control P C board Photo 2 Photo 3 3 Removing the indoor electrical box 1 Remove the panel Refer to 1 and the corner box 2 Remove the indoor outdoor connecting wire Refer to 2 3 Remove the earth wire connected to the indoor heat exchanger from the electrical box 4 Remove...

Page 51: ...l vane 3 Remove the screw of the vertical vane motor unit and pull the vertical vane motor unit 4 Remove the screws of the vertical vane motor unit cover 5 Remove the crank of the vertical vane motor unit from the shaft of the vane motor 6 Remove the vertical vane motor from the vertical vane motor unit 7 Disconnect the connector of vertical vane motor from the vertical vane motor 6 Removing the h...

Page 52: ... 8 Release the hooks of the motor band Remove the motor band Pull out the indoor fan motor 9 Remove the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it Photo 9 10 Remove the screws fixing the left side of the heat exchanger 11 Lift the heat exchanger and pull out the line flow fan to the lower left Photo 8 Photo 9 Photo 10...

Page 53: ...53 OBH531E ...

Page 54: ...uted in Jul 2011 No OBH531 REVISED EDITION C Distributed in Jul 2010 No OBH531 REVISED EDITION B 5 Distributed in Oct 2009 No OBH531 REVISED EDITION A 5 Distributed in Feb 2009 No OBH531 5 Made in Japan New publication effective Dec 2013 Specifications are subject to change without notice HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN ...

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