Mitsubishi Electric MSZ-EF22VEW Service Manual
Mitsubishi electric splyt-type air conditioners indoor unit service manual
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Also See for MSZ-EF22VEW:
- Operating instructions manual (24 pages) ,
- Service manual (43 pages) ,
- Installation manual (5 pages)
Table of Contents
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SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
SERVICE MANUAL
Models
Models
MSZ-EF22VEW -
MSZ-EF22VEW -
MSZ-EF42VEW -
MSZ-EF25VEW -
MSZ-EF22VEB -
MSZ-EF35VEW -
MSZ-EF42VEB -
MSZ-EF42VEW -
MSZ-EF50VEW -
MSZ-EF22VES -
MSZ-EF42VES -
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
MSZ-EF25VEW -
E1
MSZ-EF22VEB -
E1
MSZ-EF50VEW -
E1
MSZ-EF25VEB -
E1
MSZ-EF25VEB -
MSZ-EF35VEB -
E1
E1
MSZ-EF50VEB -
MSZ-EF42VEB -
E1
E1
MSZ-EF50VEB -
MSZ-EF25VES -
E1
E1
MSZ-EF50VES -
E1
MSZ-EF35VEW -
E1
MSZ-EF22VES -
E1
E1
MSZ-EF25VES -
E1
MSZ-EF35VEB -
MSZ-EF35VES -
E1
E1
MSZ-EF42VES -
E1
E1
MSZ-EF50VES -
MSZ-EF35VES -
E1
E1
E1
Outdoor unit service manual
MUZ-EF·VE(H) Series (OBH590)
MXZ-C·VA Series (OB584)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. NOISE CRITERIA CURVES ······························ 6
5. OUTLINES AND DIMENSIONS ························ 8
6. WIRING DIAGRAM ············································ 9
7. REFRIGERANT SYSTEM DIAGRAM ··············· 9
8. SERVICE FUNCTIONS ··································· 10
9. MICROPROCESSOR CONTROL ··················· 12
10. TROUBLESHOOTING ····································· 18
11. DISASSEMBLY INSTRUCTIONS ···················· 31
PARTS CATALOG (OBB589)
No. OBH589
E1
E1
E1
E1
E1
E1
E1
E1
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Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric MSZ-EF22VEW
Summary of Contents for Mitsubishi Electric MSZ-EF22VEW
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Page 1: Table Of Contents
SPLIT-TYPE AIR CONDITIONERS INDOOR UNIT No. OBH589 SERVICE MANUAL Models Models MSZ-EF22VEW - MSZ-EF25VEW - MSZ-EF35VEW - MSZ-EF22VEW - MSZ-EF22VEB - MSZ-EF22VES - MSZ-EF42VEW - MSZ-EF50VEW - MSZ-EF25VEW - MSZ-EF25VEB - MSZ-EF25VES - MSZ-EF22VEB - MSZ-EF25VEB - MSZ-EF35VEB - MSZ-EF35VEW -... - Page 2 <Preparation before the repair service> Prepare the proper tools. Prepare the proper protectors. Provide adequate ventilation. After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug. Discharge the capacitor before the work involving the electric parts. <Precautions during the repair service>...
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Page 3: Technical Changes
TECHNICAL CHANGES MSZ-EF22VEW - MSZ-EF25VEW - MSZ-EF35VEW - MSZ-EF42VEW - MSZ-EF50VEW - MSZ-EF22VEB - MSZ-EF25VEB - MSZ-EF35VEB - MSZ-EF42VEB - MSZ-EF50VEB - MSZ-EF22VES - MSZ-EF25VES - MSZ-EF35VES - MSZ-EF42VES - MSZ-EF50VES - 1. New model These models are compatible with the outdoor units with low standby power control. -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Front panel Air filter (Nano platinum filter) Air cleaning filter (Electrostatic anti-allergy enzyme filter, option) Air inlet Emergency Horizontal vane operation switch... -
Page 5: Specification
SPECIFICATION MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW Indoor model MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Power supply Single phase 230 V, 50 Hz Cooling Power input Heating Cooling 0.14 0.18 Running current Heating 0.26 0.30 0.32 Model... -
Page 6: Noise Criteria Curves
Specifications and rating conditions of main electric parts Fuse (F11) T3.15AL250V Horizontal vane motor (MV) 12 VDC Varistor (NR11) S10K300E2K1 (ERZV10D471) Terminal block (TB) NOISE CRITERIA CURVES MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING... -
Page 7: Band Center Frequencies, Hz
MSZ-EF42VEW MSZ-EF50VEW MSZ-EF42VEB MSZ-EF50VEB MSZ-EF42VES MSZ-EF50VES 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... -
Page 8: Outlines And Dimensions
OUTLINES AND DIMENSIONS MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Unit: mm Insulation ø37 O.D Liquid line ø6.35 - 0.5 m (Flared connection ø6.35) ø9.52 - 0.43 m Gas line (Flared connection: ø9.52 (22/25/35/42), ø12.7 (50)) Drain hose Insulation ø28 O.D Connected part ø16 O.D... -
Page 9: Wiring Diagram
WIRING DIAGRAM MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES REFRIGERANT SYSTEM DIAGRAM MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Unit: mm Refrigerant pipe ø9.52 (MSZ-EF22/25/35/42) ø12.7 (MSZ-EF50) -
Page 10: Service Functions
SERVICE FUNCTIONS MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES 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. - Page 11 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.
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Page 12: Microprocessor Control
MICROPROCESSOR CONTROL MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES WIRELESS REMOTE CONTROLLER Signal transmitting section FAN SPEED CONTROL button Operation display section OPERATION SELECT button VANE CONTROL button ECONO COOL button TIME, TIMER set buttons... - Page 13 9-2. DRY ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select DRY mode with OPERATION SELECT button. (3) The set temperature is determined from the initial room temperature. 1.
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Page 14: Heating
NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit. • When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the others for heating, the operation mode of the indoor unit that operates first is selected. - Page 15 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 time correctly with CLOCK SET button. How to set the current time (a) Press the CLOCK set button.
- Page 16 9-8. WEEKLY TIMER OPERATION • 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;...
- Page 17 (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.
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Page 18: Troubleshooting
TROUBLESHOOTING MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES 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. -
Page 19: Failure Mode Recall Function
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 20 2. Indoor unit failure mode table The left lamp of Abnormal point OPERATION INDI- Condition Remedy (Failure mode) CATOR lamp Not lighted Normal — — The room temperature thermistor short or 1-time fl ash every Room temperature Refer to the characteristics of the room temperature open circuit is detected every 8 seconds dur- 0.5-second thermistor...
- Page 21 10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit oper- Indoor unit does OPERATION INDICATOR Outdoor unit does not receive the ates. lamp on the indoor unit is not operate normally. signal from re- Outdoor unit fl ashing ON and OFF. does not operate.
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Page 22: Troubleshooting Check Table
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... - Page 23 fi rst has manual. setting not operate. the priority. 10-5. TROUBLE CRITERION OF MAIN PARTS MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Part name Check method and criterion Figure Measure the resistance with a tester.
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Page 24: 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 EMERGENCY OPERATION switch. - Page 25 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. Press OPERATE/STOP (ON/OFF) button on the remote controller. Is LCD display on the remote controller Replace the batteries. (Refer to 10-1.4.) visible? (Not clear) Remove the batteries, then set them back...
- Page 26 C Check of indoor P.C. board and indoor fan motor Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane Measure the resistance of indoor fan Short circuit: motor connector CN151 from the indoor motor.
- Page 27 D How to check miswiring and serial signal error MUZ-EF Type Turn the main power supply OFF. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. Turn the main power supply ON. Check for miswiring, broken wires, and loose wire connection between the main power Is there rated voltage between outdoor terminal block S1 and S2?
- Page 28 MXZ Type Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring. Press EMERGENCY OPERATION switch once. Does the left lamp of OPERATION INDICATOR lamp light up? <Confi...
- Page 29 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 30 10-7. TEST POINT DIAGRAM AND VOLTAGE Indoor power P.C. board, Indoor electronic control P.C. board, Receiver board, Display board, Switch board MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES Fuse (F11)( ) Varistor (NR11) Indoor fan motor Indoor power P.C.
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Page 31: Disassembly Instructions
Locking lever lever. Connector MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEB MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF42VES MSZ-EF50VES NOTE: Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (1) Remove the horizontal vanes. - Page 32 OPERATING PROCEDURE PHOTOS 2. Remove the indoor electrical box Photo 2 Electrical box Earth wire (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the screw of the V.A. clamp. Remove the V.A. clamp and the indoor/outdoor connecting wire.
- Page 33 OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the indoor/outdoor connecting wire (Refer to 2.). (3) Remove the electrical cover (Refer to 2.). (4) Disconnect the following connector: <Indoor electronic control P.C.
- Page 34 OPERATING PROCEDURE PHOTOS Lead wire of 6. Removing the indoor fan motor, the indoor coil Photo 5 the indoor coil thermistor thermistor and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the indoor electronic control P.C. board holder, the electrical box and the nozzle assembly.
- Page 36 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2010 MITSUBISHI ELECTRIC CO., LTD New publication, effective Nov. 2010 Distributed in Nov. 2010. No. OBH589 Specifications subject to change without notice. Made in Japan...