Revision E: • Detail of the indoor fan speed control in COOL or DRY operation has been added (9-1.3, 9-2.3). SPLIT-TYPE AIR CONDITIONERS Please void OBH515 REVISED EDITION-D. INDOOR UNIT SERVICE MANUAL No.
Revision A: • 11. DISASSEMBLY INSTRUCTIONS has been corrected. 11-6. Photo 9 has been changed. Revision B: • MSZ-GE42VA - E1 and MSZ-GE50VA - E1 have been added. E1 and MSZ-GE71VA - E1 have been added. Revision C: • MSZ-GE60VA - Revision D: • The model name for MSZ-GE25VA was added to 8-3. "AUTO RESTART FUNCTION". Because the model name was not written there. Revision E: • Detail of the indoor fan speed control in COOL or DRY operation has been added (9-1.3, 9-2.3).
1 TECHNICAL CHANGES MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA - E1 E1 E1 E1 E1 E1 E1 1.
2 PART NAMES AND FUNCTIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Air filter (Catechin air filter) Front panel Air cleaning filter (Anti-Allergy Enzyme Filter, option) Air inlet Heat exchanger Remote controller Air outlet Fan guard Fan Horizontal vane Display section Vertical vane Remote control receiving section Operation indicator lamp Emergency operation switch (E.O.
3 SPECIFICATION Indoor model MSZGE25VA 0.22 0.22 Cooling Heating Fan speed Cooling Heating Sound level Special remarks Heating Airflow Cooling Electrical data 22 Fan motor Power supply Cooling Power input W 1 Heating Cooling Running A current 1 Heating Model Cooling A Current 1 Heating Dimensions W × H × D mm Weight kg Air direction Super High + LONG + POWERFUL Super High High m3/h Med. Low Silent Super High + LONG + POWERFUL Super High High m3/h Med.
Specifications and rating conditions of main electric parts Fuse Horizontal vane motor Vertical vane motor MSZ-GE60VA MSZ-GE71VA Varistor Terminal block 4 T3.
MSZ-GE60VA MSZ-GE71VA FAN SPEED FUNCTION Super High SPL(dB(A)) COOLING 49 HEATING 49 LINE FAN SPEED FUNCTION Super High 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 NC-20 NC-10 10 49 HEATING 49 LINE 90 OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.
5 OUTLINES AND DIMENSIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA 11×20 Oblong hole 225 80 3 42 155 338 315 84 Air in 232 Wall hole ø65 Indoor unit Installation plate 50 619 42 130 56 69 8 100 56 69 295 Piping 45 Drain hose 107 112 Air out Insulation Liquid line Gas line Piping 43 42 19 159 58 50 56 ø35 O.D ø6.35 - 0.5 m (Flared connection ø6.35) ø9.52 - 0.43 m (Flared connection: ø9.52 (22/25/35/42), ø12.7 (50)) Insulation ø28 O.D Connected part ø16 O.
6 WIRING DIAGRAM MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA 9
7 REFRIGERANT SYSTEM DIAGRAM MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Refrigerant pipe ø9.52 (MSZ-GE22/25/35/42VA) ø12.7 (MSZ-GE50VA) (with heat insulator) Indoor heat exchanger Indoor coil thermistor RT12 (main) Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe ø6.35 (with heat insulator) Refrigerant flow in cooling Refrigerant flow in heating MSZ-GE60VA MSZ-GE71VA Refrigerant pipe ø15.
8 SERVICE FUNCTIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. (Refer to 10-7.2,3.) Set time: 1 minute → 1 second Set time: 3 minutes → 3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short circuit-of JPG and JPS.) 8-2. P.C.
8-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation in the same mode just before the shutoff of the main power. Operation If the main power has been cut, the operation settings remain. After the power is restored, the unit restarts automatically according to the memory.
9 MICROPROCESSOR CONTROL MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA WIRELESS REMOTE CONTROLLER MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Signal transmitting section Operation display section OPERATE/STOP (ON/OFF) button Temperature buttons FAN SPEED CONTROL button OPERATION SELECT button OFF TIMER button ECONO COOL button ON TIMER button VANE CONTROL button TIME SET buttons FORWARD button BACKWARD button i save button RESET button CLOCK SET button
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.
9-4. AUTO CHANGE OVER ··· AUTO MODE OPERATION Once desired temperature is set, unit operation is switched automatically between COOL and HEAT operation. Mode selection (1) Initial mode When unit starts the operation with AUTO operation from OFF: • If the room temperature is higher than the set temperature, operation starts in COOL mode. • If the room temperature is equal to or lower than the set temperature, operation starts in HEAT mode.
(5) STOP (operation OFF) and ON TIMER standby In the following cases, the horizontal vane returns to the closed position. (a) When OPERATE/STOP (ON/OFF) button is pressed (POWER OFF). (b) When the operation is stopped by the emergency operation. (c) When ON TIMER is ON standby. (6) Dew prevention During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
(4) SWING ( ) MODE By selecting SWING mode with WIDE VANE CONTROL button, the vertical vane swings horizontally. The remote controller displays “ ”. Swing mode is cancelled when WIDE MODE CONTROL button is pressed once again. 9-6. 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.
9-7. WEEKLY TIMER OPERATION (MSZ-GE60VA MSZ-GE71VA) • 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. 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. 1.
(5) Press button to turn the weekly timer ON. ( lights.) •When the weekly timer is ON, the day of the week whose timer setting is complete, will light. Press button again to turn the weekly timer OFF. ( goes out.) NOTE: The saved settings will not be cleared when the weekly timer is turned OFF. 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.
10 TROUBLESHOOTING MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA 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.
5. How to install the horizontal vane If horizontal vane is not installed correctly, all of the operation indicator lamps will blink. In this case, install the horizontal vane correctly by following the procedures to . NOTE: Before installation of the horizontal vane, turn OFF the power supply. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA 2 In procedure lock the stoppers until they click into place. Lock 1 MSZ-GE60VA MSZ-GE71VA 2 Lock 1 Check the upper and the lower vane.
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.
2. Indoor unit failure mode table Upper lamp of OPAbnormal point ERATION INDICA(Failure mode) TOR lamp Not lighted Normal Condition Correspondence — The room temperature thermistor short or 1-time flash every Room temperature open circuit is detected every 8 seconds dur0.5-second thermistor ing operation. Indoor coil 2-time flash The indoor coil thermistor short or open circuit 2.5-second OFF is detected every 8 seconds during operation.
10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Outdoor unit does not operate. Outdoor unit operates only in Test Run operation. Outdoor unit does not operate even in Test Run operation. Indoor unit operates. Outdoor unit does not operate normally. Unit does not operate normal operation in COOL or HEAT mode. Indoor unit does not receive the signal from remote controller. Indoor unit operates, when EMERGENCY OPERATION switch is pressed.
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 flashes. OPERATION INDICATOR Lighted Blinking Not lighted No.
OPERATION INDICATOR No. Abnormal point Operation indicator lamp Symptom Condition Correspondence All lamps flash at the same time. 1 Indoor unit and outdoor unit do not operate. Attachment 0.5-second ON of the horizontal vane 0.5-second OFF The electricity is not conducted to the interlock switch (Fan) of the horizontal vane. • Refer to 10-6. "Check of installation of the horizontal vane". OPERATION INDICATOR No.
10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA 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. Is there any foreign matter that interferes the rotation of the line flow fan? No Yes Remove the foreign matter and adjust the line flow fan.
MSZ-GE60VA MSZ-GE71VA 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. Is there any foreign matter that interferes the rotation of the line flow fan? Yes Remove the foreign matter and adjust the line flow fan. Is there 325 VDC between CN211 (+) and (–) ? No Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch.
B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Press OPERATE/STOP (ON/OFF) button on the remote controller. Is LCD display on the remote controller visible? Yes No (Not clear) Replace the batteries. (Refer to 10-1.4.) 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.
C Check of indoor P.C. board and indoor fan motor MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply. Does the unit operate with the remote controller? Does OPERATION INDICATOR lamp light up by pressing EMERGENCY OPERATION switch? No Yes Measure the resistance of indoor fan motor. Refer to 10-5.
MSZ-GE60VA MSZ-GE71VA Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply. Short/open circuit: Replace the indoor fan motor. Measure the resistance between CN211 and of the indoor fan motor connector.
D How to check miswiring and serial signal error MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Turn OFF the power supply. Is there rated voltage in the power supply? Yes Check the power supply. No Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Yes No Check the wiring. Press EMERGENCY OPERATION switch once.
MSZ-GE60VA MSZ-GE71VA Turn OFF the power supply. Is there rated voltage in the power supply? Yes Check the power supply. No Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Yes No Check the wiring. Press EMERGENCY OPERATION switch once. Does the upper lamp of OPERATION INDICATOR lamp light up? Yes Is serial signal error indicated 6 minutes later? Yes A Turn OFF the power supply.
E Check of installation of the horizontal vane Turn OFF the power supply. Is the stopper of the horizontal vane locked to the indoor unit correctly? Yes No Re-lock the stopper of the horizontal vane to the indoor unit. (Refer to 10-1.5.) Turn ON the power supply. Are all lamps flashing? Yes 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? No( Turn OFF the power supply.
F Electromagnetic noise enters into TV sets or radios Is the unit earthed? Yes Is the distance between the antennas and the indoor unit within 3 m, or is the distance between the antennas and the outdoor unit within 3 m? No Earth the unit. No Yes Extend the distance between the antennas and the indoor unit, and/or the antennas and the outdoor unit.
10-7. TEST POINT DIAGRAM AND VOLTAGE 1. Indoor power P.C. board, Indoor terminal P.C. board MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA Indoor power P.C. board Indoor terminal P.C. board Fuse (F11)( ) Varistor (NR11) Resistor (R111) Indoor fan motor (CN211) 325 VDC (–) GND (highvoltage DC) 15 VDC (+)3-6 VDC (+)0 or 15 VDC Terminal block Connector to indoor electronic control P.C. board (CN20A) 5 VDC 12 VDC GND Please replace the fuse after removing the indoor terminal P.C. board from the electrical box.
2. Indoor electronic control P.C. board MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Indoor electronic control P.C. board Timer short mode point JPG JPS (Refer to 8-1.) Room temperature thermistor RT11 (CN111) Indoor coil thermistor RT12, RT13 (CN112) GND Interlock switch (FAN) (CN1R1) Vane motor (CN151) Connector to Indoor power P.C. board (CN10A) 12 VDC 5 VDC Release of Auto restart function Solder the Jumper wire to JR07. (Refer to 8-3.
3. Indoor electronic control P.C. board, Indoor terminal P.C. board, Power monitor receiver SW P.C. board MSZ-GE60VA MSZ-GE71VA Indoor terminal P.C. board Terminal Fuse (F11)( ) block Varistor (NR11) Indoor electronic control P.C. board Release of Auto restart function Indoor coil thermistor Solder the Jumper wire to JR07. Interlock switch RT12, RT13 12 VDC (Refer to 8-3.
11 DISASSEMBLY INSTRUCTIONS <"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. (1) Slide the sleeve and check if there is a locking lever or not.
OPERATING PROCEDURE 2. Removing the indoor electronic control P.C. board and the room temperature thermistor (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the screw of the V.A. clamp. Remove the V.A. clamp and the indoor/outdoor connecting wire. (3) Open the indoor electronic control P.C. board holder (to right side) (4) Disconnect the following connectors:
OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor/outdoor connecting wire. (Refer to 2.) (3) Remove the indoor electronic control P.C. board holder (4) Disconnect the following connectors: CN1R1 (Interlock switch) (5) Pull out the drain hose from the nozzle assembly and remove the nozzle assembly. (6) Remove the interlock switch. Interlock switch 5.
OPERATING PROCEDURE PHOTOS Photo 6 6. Removing the indoor fan motor, the indoor coil thermistor, and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor electronic control P.C. board holder, the electrical box and the nozzle assembly. (3) Remove the screws fixing the motor bed. (4) Loosen the screw fixing the line flow fan. (5) Remove the motor bed together with fan motor and motor band. (6) Release the hooks of the motor band. Remove the motor band.
11-2. MSZ-GE60VA MSZ-GE71VA NOTE: Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (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.
OPERATING PROCEDURE PHOTOS 2. Removing the indoor electronic control P.C. board, the power monitor receiver SW P.C. board and the indoor terminal P.C. board Photo 2 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the screw of the V.A. clamp. Remove the V.A. clamp and the indoor/outdoor connecting wire. (Photo 2) (3) Remove the screw of the electrical cover, and then the electrical cover. (4) Remove the earth wire connected to the indoor electronic control P.C.
OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the V.A. clamp, and then the indoor/outdoor connecting wire. (Photo 2) (3) Remove the electrical cover. (Photo 2) (4) Disconnect the following connectors on the electronic control P.C. board: CN151 (Horizontal vane motor) CN152 (Vertical vane motor) CN1R1 (Interlock switch) (5) Remove the power monitor receiver holder.
OPERATING PROCEDURE PHOTOS 7. Removing the water cut, the indoor fan motor, the indoor coil thermistor, and the line flow fan Photo 8 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the power monitor receiver holder, the electrical box and the nozzle assembly. (Refer to 3 and 4.) (3) Remove the screw of the water cut and remove the water cut. (4) Remove the screws fixing the motor bed. (5) Loosen the screw fixing the line flow fan.
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2008 MITSUBISHI ELECTRIC CO., LTD Distributed in Jun. 2010. No. OBH515 REVISED EDITION-E 5 Distributed in Mar. 2010. No. OBH515 REVISED EDITION-D 5 Distributed in Oct. 2009. No. OBH515 REVISED EDITION-C 5 Distributed in Dec. 2008. No. OBH515 REVISED EDITION-B 5 Distributed in Sep. 2008. No. OBH515 REVISED EDITION-A 5 Distributed in Aug. 2008. No. OBH515 6 Made in Japan New publication, effective Jun.
