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INDOOR UNIT
SERVICE MANUAL
Models
MSZ-AP25VG
MSZ-AP35VG
MSZ-AP42VG
MSZ-AP50VG
MSZ-AP60VG
MSZ-AP71VG
MSZ-AP25VGK
MSZ-AP35VGK
MSZ-AP42VGK
MSZ-AP50VGK
MSZ-AP60VGK
MSZ-AP71VGK
MSZ-AP25VG
MSZ-AP25VGK
MSZ-AP35VG
MSZ-AP35VGK
MSZ-AP42VG
MSZ-AP42VGK
MSZ-AP50VG
MSZ-AP50VGK
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Revision F:
• MSZ-AP60/71VG -
MSZ-AP60/71VGK -
added.
OBH788 REVISED EDITION-E is void.
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Outdoor unit service manual
MUZ-AP∙VG/VGH Series (OBH789)
MXZ-D∙VA/VAH Series (OBH626)
MXZ-E∙VA/VAH Series (OBH723)
MXZ-F∙VF/VFH Series (OBH790)
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················5
3. SPECIFICATION ········································7
4. NOISE CRITERIA CURVES ··························9
5. OUTLINES AND DIMENSIONS ··················· 11
6. WIRING DIAGRAM ··································· 13
7. REFRIGERANT SYSTEM DIAGRAM ··········· 27
8. SERVICE FUNCTIONS ······························ 28
9. MICROPROCESSOR CONTROL ················ 30
10. TROUBLESHOOTING ······························· 38
11. DISASSEMBLY INSTRUCTIONS ················· 55
PARTS CATALOG (OBB788)
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REVISED EDITION-F
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Table of Contents
Troubleshooting
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Related Manuals for Mitsubishi Electric MSZ-AP71VG-E4
Summary of Contents for Mitsubishi Electric MSZ-AP71VG-E4
- Page 1 Revision F: • MSZ-AP60/71VG - MSZ-AP60/71VGK - have been added. OBH788 REVISED EDITION-E is void. INDOOR UNIT No. OBH788 SERVICE MANUAL REVISED EDITION-F Models MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP60VG MSZ-AP71VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK MSZ-AP60VGK MSZ-AP71VGK Outdoor unit service manual MUZ-AP∙VG/VGH Series (OBH789) MXZ-D∙VA/VAH Series (OBH626) MXZ-E∙VA/VAH Series (OBH723)
- Page 2 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.
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Page 3: Technical Changes
TECHNICAL CHANGES These models are compatible with the outdoor units with low standby power control. Connecting these models to the MUZ-AP·VG/VGH series outdoor units enables the low standby power control. These models may be connected to the MUZ-AP·VG/VGH series after once connected to the MXZ series and operated, for example because of relocation. - Page 4 MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VGK - MSZ-AP71VGK - 1. New air cleaning filter has been added. MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VGK - MSZ-AP71VGK - 1. Indoor electronic control P.C. board has been changed. OBH788F...
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Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK Front panel Air inlet Wi-Fi interface MSZ-AP·VGK Air fi lter Air cleaning fi lter (Silver-ionized air purifi er fi lter, option) Horizontal vane Emergency operation switch Air cleaning fi lter Fan guard (V Blocking Filter) Air outlet... - Page 6 MSZ-AP60VG MSZ-AP71VG MSZ-AP60VGK MSZ-AP71VGK Air inlet Front panel Wi-Fi interface MSZ-AP·VGK Emergency operation switch Air fi lter Air cleaning fi lter (Silver-ionized air Heat exchanger purifi er fi lter, option) Air cleaning fi lter (V Blocking Filter) Horizontal vane Fan guard MSZ-AP·VG - MSZ-AP·VGK - Air outlet...
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Page 7: Specification
SPECIFICATION MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG Indoor model MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK Power supply Single phase 230 V, 50 Hz Cooling Power input *1 Heating Cooling 0.18 0.24 Running current *1 Heating 0.26 0.32 Model RC0J30-CV Cooling 0.18 0.24 Current *1 Heating 0.26 0.32... - Page 8 MSZ-AP60VG MSZ-AP71VG Indoor model MSZ-AP60VGK MSZ-AP71VGK Power supply Single phase 230 V, 50 Hz Cooling Power input Heating Cooling 0.37 0.38 Running current *1 Heating 0.43 0.40 Model RC0J56-AH Cooling 0.37 0.38 Current *1 Heating 0.43 0.40 Dimensions W × H × D 1100 ×...
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Page 9: Noise Criteria Curves
NOISE CRITERIA CURVES MSZ-AP25VG MSZ-AP35VG MSZ-AP25VGK MSZ-AP35VGK FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000... -
Page 10: Indoor Unit
MSZ-AP60VG MSZ-AP71VG MSZ-AP60VGK MSZ-AP71VGK FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000 1000 2000 4000... -
Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG Unit: mm MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK INSTALLATION PLATE 11×20 OBLONG HOLE 11×26 OBLONG HOLE WALL HOLE 65 INDOOR UNIT INSTALLATION PLATE AIR IN PIPING DRAIN HOSE MIN 40mm MIN 20mm AIR OUT (MSZ-AP25/35/42/50VG- MSZ-AP25/35/42/50VGK- INSULATION Ø37 O.D... - Page 12 MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VGK - MSZ-AP71VGK - OBH788F...
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Page 13: Wiring Diagram
WIRING DIAGRAM MSZ-AP25VG - MSZ-AP35VG - MSZ-AP42VG - MSZ-AP25VG - MSZ-AP35VG - MSZ-AP42VG - OBH788F... - Page 14 MSZ-AP50VG - MSZ-AP50VG - OBH788F...
- Page 15 MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VG - MSZ-AP60VG - OBH788F...
- Page 16 MSZ-AP71VG - MSZ-AP71VG - OBH788F...
- Page 17 MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VG - PARÇA ADI SİGORTA İÇ ÜNİTE (T3.15AL250V) TERMİNAL KARTI REAKTÖR FAN MOTORU KANAT MOTORU (YATAY) KANAT MOTORU (DİKEY) İÇ ÜNİTE ELEKTRONİK VARİSTÖR KONTROL KARTI ODA SICAKLIK TERMİSTÖRÜ BORU SICAKLIK TERMİSTÖRÜ(ANA) ALICI BORU SICAKLIK KARTI TERMİSTÖRÜ(YARDIMCI) TERMİNAL BLOĞU NOTLAR: SİVİÇ/BUZZER...
- Page 18 MSZ-AP71VG - PARÇA ADI SİGORTA İÇ ÜNİTE (T3.15AL250V) TERMİNAL KARTI FAN MOTORU KANAT MOTORU (YATAY) KANAT MOTORU (DİKEY) VARİSTÖR İÇ ÜNİTE ELEKTRONİK RESİSTÖR KONTROL KARTI ODA SICAKLIK TERMİSTÖRÜ BORU SICAKLIK TERMİSTÖRÜ(ANA) ALICI BORU SICAKLIK KARTI TERMİSTÖRÜ(YARDIMCI) TERMİNAL BLOĞU NOTLAR: SİVİÇ/BUZZER 1.
- Page 19 MSZ-AP25VGK - MSZ-AP35VGK - MSZ-AP42VGK - MSZ-AP25VGK - MSZ-AP35VGK - MSZ-AP42VGK - OBH788F...
- Page 20 MSZ-AP50VGK - MSZ-AP50VGK - OBH788F...
- Page 21 MSZ-AP60VGK - MSZ-AP71VGK - MSZ-AP60VGK - MSZ-AP71VGK - OBH788F...
- Page 22 MSZ-AP60VGK - MSZ-AP60VGK - OBH788F...
- Page 23 MSZ-AP60VGK - MSZ-AP60VGK - PARÇA ADI SİGORTA İÇ ÜNİTE (T3.15AL250V) TERMİNAL KARTI REAKTÖR FAN MOTORU KANAT MOTORU (YATAY) KANAT MOTORU (DİKEY) İÇ ÜNİTE ELEKTRONİK VARİSTÖR KONTROL KARTI ODA SICAKLIK TERMİSTÖRÜ BORU SICAKLIK TERMİSTÖRÜ(ANA) ALICI BORU SICAKLIK KARTI Wİ-Fİ TERMİSTÖRÜ(YARDIMCI) ARAYÜZÜ TERMİNAL BLOĞU NOTLAR: SİVİÇ/BUZZER...
- Page 24 MSZ-AP60VGK - PARÇA ADI SİGORTA İÇ ÜNİTE (T3.15AL250V) TERMİNAL KARTI REAKTÖR FAN MOTORU KANAT MOTORU (YATAY) KANAT MOTORU (DİKEY) İÇ ÜNİTE ELEKTRONİK VARİSTÖR KONTROL KARTI ODA SICAKLIK TERMİSTÖRÜ BORU SICAKLIK TERMİSTÖRÜ(ANA) ALICI BORU SICAKLIK KARTI Wİ-Fİ TERMİSTÖRÜ(YARDIMCI) ARAYÜZÜ TERMİNAL BLOĞU NOTLAR: SİVİÇ/BUZZER 1.
- Page 25 MSZ-AP71VGK - MSZ-AP71VGK - MSZ-AP71VGK - OBH788F...
- Page 26 MSZ-AP71VGK - PARÇA ADI SİGORTA İÇ ÜNİTE (T3.15AL250V) TERMİNAL KARTI FAN MOTORU KANAT MOTORU (YATAY) KANAT MOTORU (DİKEY) VARİSTÖR İÇ ÜNİTE ELEKTRONİK RESİSTÖR KONTROL KARTI ODA SICAKLIK TERMİSTÖRÜ BORU SICAKLIK TERMİSTÖRÜ(ANA) ALICI BORU SICAKLIK KARTI Wİ-Fİ TERMİSTÖRÜ(YARDIMCI) ARAYÜZÜ TERMİNAL BLOĞU NOTLAR: SİVİÇ/BUZZER 1.
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Page 27: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MSZ-AP25VG MSZ-AP35VG MSZ-AP60VG Unit: mm MSZ-AP25VGK MSZ-AP35VGK MSZ-AP60VGK Refrigerant pipe ø9.52 [MSZ-AP25/35VG, MSZ-AP25/35VGK] ø12.7 [MSZ-AP60VG, MSZ-AP60VGK] (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe ø6.35... -
Page 28: Service Functions
SERVICE FUNCTIONS MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP60VG MSZ-AP71VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK MSZ-AP60VGK MSZ-AP71VGK 8-1. TIMER SHORT MODE For service, the following set time can be shortened by bridging the timer short mode point on the electronic control P.C. board. (Refer to 10-7.) •... - Page 29 Third party Wi-Fi interfaces cannot be connected to MELCloud. When the Wi-Fi interface is reset to the factory default, ALL the Mitsubishi Electric is not responsible for any (i) under performance of a sys- configuration information will be lost. Take great care in implementing this tem or any product;...
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Page 30: Microprocessor Control
MICROPROCESSOR CONTROL MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP60VG MSZ-AP71VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK MSZ-AP60VGK MSZ-AP71VGK WIRELESS REMOTE CONTROLLER MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK Signal transmitting section Distance of signal : About 6 m Beep(s) is (are) heard from the indoor unit when the signal is received. -
Page 31: Cool Operation
INDOOR UNIT DISPLAY SECTION Operation Indicator lamp The operation indicator at the right side of the indoor unit indicates the operation state. •The following indication applies regardless of shape of the indication. Indication Operation state Room temperature The unit is operating to About 2°C or more away reach the set temperature from set temperature... -
Page 32: Heat Operation
9-4. HEAT ( ) OPERATION (1) Press OFF/ON (stop/operate) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select HEAT mode with Operation select button. (3) Press Temperature buttons TEMP button to select the desired temperature. The setting range is 10 - 31°C. 1. - Page 33 9-6. AUTO VANE OPERATION 1. Horizontal vane (1) Vane motor drive These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approximately 12 V) transmitted from indoor microprocessor. (2) The horizontal vane angle and mode change as follows by pressing VANE control button.
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Page 34: Long Mode
(11) LONG MODE ( ) (MSZ-AP60/71VG, MSZ-AP60/71VGK) By pressing LONG button indoor fan speed becomes faster than setting fan speed on the remote controller, and the horizontal vane moves to the position for LONG mode. The remote controller displays “ ”. -
Page 35: Program Timer
PROGRAM TIMER • OFF timer and ON timer can be used in combination. The set time that is reached first will operate first. • “ ” and “ ” display shows the order of OFF timer and ON timer operation. (Example 1) The current time is 8:00 PM. - Page 36 (3) Press , and buttons to set ON/OFF, time, and temperature. E.g. : [ON], [6:00] and [24°C] are selected. Pressing selects ON/OFF timer. Pressing Pressing adjusts the time. adjusts the tem- Pressing perature. deletes timer setting. * Hold down the button to change the time quickly. * The temperature can be set between 16°C and 31°C at cool operation.
- Page 37 9-10. i-save ( ) OPERATION 1. How to set i-save operation (1) Press OFF/ON (stop/operate) button. (2) Select COOL, ECONO COOL, HEAT or NIGHT mode. (3) Press i-save button. (4) Set the temperature, fan speed, and airflow direction for i-save operation. NOTE: •...
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Page 38: Troubleshooting
TROUBLESHOOTING MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP60VG MSZ-AP71VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK MSZ-AP60VGK MSZ-AP71VGK 10-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing 1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and after confirm- ing the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug. - Page 39 10-2. FAILURE MODE RECALL FUNCTION Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-4.) disappears, the memorized failure details can be recalled. 1.
- Page 40 2. Table of indoor unit failure mode recall function NOTE: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (10-4.). The upper lamp Abnormal point of OPERATION Condition Remedy (Failure mode) INDICATOR lamp Not lit Normal —...
- Page 41 10-3. INSTRUCTION OF TROUBLESHOOTING *2 There is possibility that diesel explosion may occur due to the air mixed in the refrigerant circuit. 1. Check of the unit. First, ensure that there are no leakage points on the valves, flare connections, etc. that allow the air to flow into the refrigerant circuit, or no blockage points (e.g.
- Page 42 2. Check of Wi-Fi interface (MSZ-AP·VGK) Follow the procedure below if the air conditioner cannot be monitored or controlled with a device such as a smartphone. Start There is a problem in communication between the air conditioner and Is the UNIT LED on the Wi-Fi interface blinking? the Wi-Fi interface.
- Page 43 10-4. TROUBLESHOOTING CHECK TABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after the power ON), the indoor fan motor turns OFF and OPERATION INDICATOR lamp blinks. OPERATION INDICATOR Blinking Not lit...
- Page 44 OPERATION INDICATOR Blinking Not lit Abnormal Operation indicator lamp Symptom Condition Remedy point Upper lamp lights and lower lamp blinks. The operation mode of the each indoor unit MXZ type Outdoor unit is differently set to COOL (includes DRY) and •...
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Page 45: Troubleshooting Flow
10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Pay enough attention to the high voltage on the fan motor connector CN211. Turn ON the power supply, wait 5 seconds or more, and then press the emergency operation switch. - Page 46 B Check of remote controller and indoor electronic control P.C. board *Check if the remote controller is exclusive for this air conditioner. Press OFF/ON (stop/operate) button on *1 Look at the image of the signal transmitting section of the remote controller. the remote controller through the monitor of a digital camera or a camera phone.
- Page 47 C Check of indoor P.C. board and indoor fan motor MSZ-AP25/35/42/50VG MSZ-AP25/35/42/50VGK Turn OFF the power supply. Remove the indoor fan motor connector Measure the resistance of indoor fan CN211 and the vane motor connector Short circuit: motor. CN151 from the indoor electronic control Replace the indoor fan motor.
- Page 48 MSZ-AP60/71VG MSZ-AP60/71VGK Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane Short/open circuit: Measure the resistance between CN211 motor connector CN151 and CN152 from the indoor Replace the indoor fan motor. of the indoor fan motor connector. electronic control P.C.
- Page 49 D How to check miswiring and serial signal error Turn the main power supply MUZ Type OFF. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. The connection information to the Multi series is stored in the indoor unit.
- Page 50 MXZ Type Turn OFF the power supply. LED indication for communication status Communication status is indicated Is there rated voltage in by the LED. Check the power supply. the power supply? Unit status Blinking: normal communication Lit: abnormal communication or Turn ON the power supply.
- Page 51 E Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 3 m, or is the the indoor unit, and/or the antennas and the distance between the antennas and the outdoor unit.
- Page 52 10-7. TEST POINT DIAGRAM AND VOLTAGE 1. Indoor electronic control P.C. board, indoor terminal P.C. board, receiver P.C. board, display board and switch/buzzer P.C. board MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK Indoor terminal P.C. board To disable "Auto restart function" Receiver P.C.
- Page 53 2. Indoor electronic control P.C. board, indoor terminal P.C. board, receiver P.C. board, display P.C. board and switch/buzzer P.C. board MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VGK - Connector to Indoor MSZ-AP71VGK - fan motor (CN211) (+)0 or 15 V DC (+)3-6 V DC 15 V DC Indoor terminal P.C.
- Page 54 MSZ-AP60VG - MSZ-AP71VG - MSZ-AP60VGK - MSZ-AP71VGK - Connector to Indoor fan motor (CN211) (+)0 or 15 V DC (+)3-6 V DC Indoor terminal P.C. board 15 V DC Indoor electronic control P.C. board (-) GND Timer short To disable "Auto restart (High voltage DC) Fuse (F11) mode point...
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Page 55: Operating Procedure
DISASSEMBLY INSTRUCTIONS <Detaching method of the terminal with locking mechanism> The terminal which has the locking mechanism can be detached as shown below. There are 2 types 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. - Page 56 OPERATING PROCEDURE PHOTOS/FIGURES Removing the panel (R) (Photos 1, 2, Figure 1) Photo (1) Remove the front panel and the horizontal vanes (U) (L). Screw of the Screws of the Panel (F) (2) Remove the screw cap on the panel (R), and the panel (L) panel (R) screw.
- Page 57 OPERATING PROCEDURE PHOTOS/FIGURES Wi-Fi 2. Removing the Wi-Fi interface (Photos 3, 5) Photo 3 interface MSZ-AP · Screw of the (1) Remove the front panel and the horizontal vanes (U) electrical cover (L). (2) Remove the panels (R) (L) (U). Catch of the (3) Remove the Wi-Fi interface on the right side of the water cover...
- Page 58 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the indoor electrical box Photo 4 (Photos 3, 4, 5) Earth wire connected to Lead wire of indoor the indoor heat exchanger (1) Remove the front panel and the horizontal vanes (U) coil thermistor (L). (2) Remove the panels (R) (L) (U) (F).
- Page 59 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing the nozzle assembly Photo 6 (1) Remove the front panel and the horizontal vanes (U) (L). (2) Remove the panels (R) (L) (U) (F). (3) Remove the indoor/outdoor connecting wire (Refer to section 3). (4) Remove the electrical cover (Refer to section 3). (5) Disconnect the following connector: <Indoor electronic control P.C.
- Page 60 OPERATING PROCEDURE PHOTOS/FIGURES 7. Removing the line flow fan, the indoor fan motor Photo 9 assembly, the indoor coil thermistor (Photo 9, 10, 11) Heat exchanger (1) Remove the front panel, the horizontal vanes (U) (L), the panels (R) (L) (F) (U), the Wi-Fi interface (MSZ- AP·VGK), the electrical box, and the nozzle assem- bly.
- Page 61 11-2. MSZ-AP60VG MSZ-AP71VG MSZ-AP60VGK MSZ-AP71VGK NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the panel Photo 1 (1) Remove the horizontal vanes. Front panel Horizontal vanes (2) Remove the screw caps of the panel. Remove the screws of the panel.
- Page 62 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the indoor terminal P.C. board, the Photo 3 indoor electronic control P.C. board, the display Panel (F) Electrical box P.C. board, switch/buzzer P.C. board and the receiver P.C. board Catch of the (1) Remove the panel (Refer to section 1) and the right water cover corner box.
- Page 63 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing the nozzle assembly Photo 5 (1) Remove the panel (Refer to section 1) and the right corner box. (2) Remove the V.A. clamp, and then the indoor/outdoor connecting wire. (Photo 3) (3) Remove the electrical cover. (Photo 3) (4) Disconnect the following connectors on the electronic control P.C.
- Page 64 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the water cut, the indoor fan motor, Photo 9 the indoor coil thermistor, and the line flow fan (1) Remove the panel (Refer to section 1) and the right corner box. (2) Remove the display and receiver holder, the electrical box and the nozzle assembly.
- Page 65 Do not pull the lead wire when removing the indoor coil thermistor. HEAD OFFICE: TOKYO BUILIDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2017 MITSUBISHI ELECTRIC CORPORATION Issued: Sep. 2023. No. OBH788 REVISED EDITION-F Issued: Aug. 2021. No. OBH788 REVISED EDITION-E Issued: Oct.
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