Table of Contents
Advertisement
Quick Links
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-EF18VEW/B/S
MSZ-EF35VEW/B/S
MSZ-EF18VE2W/B/S
MSZ-EF35VE2W/B/S
MSZ-EF18VE2W/B/S
MSZ-EF35VE2W/B/S
MSZ-EF18VE3W/B/S
MSZ-EF35VE3W/B/S
MSZ-EF35VE3W/B/S
MSZ-EF∙VEW
MSZ-EF∙VEB
MSZ-EF∙VES
MSZ-EF22VEW/B/S
-
E1
MSZ-EF42VEW/B/S
-
E1
MSZ-EF22VE2W/B/S
-
E1
MSZ-EF42VE2W/B/S
-
E1
MSZ-EF22VE2W/B/S
-
ER1
MSZ-EF42VE2W/B/S
-
ER1
MSZ-EF22VE3W/B/S
-
,
E1
E2
MSZ-EF42VE3W/B/S
-
,
E1
E2
MSZ-EF22VE3W/B/S
MSZ-EF42VE3W/B/S
-
,
ER1
ER2
Outdoor unit service manual
MUZ-EF∙VE(H) Series (OBH590)
MXZ-C∙VA Series (OB584)
Revision G:
• 5. OUTLINES AND DIMENTIONS has been
modified.
• Some descriptions have been modified.
OBH589 REVISED EDITION-F is void.
MSZ-EF25VEW/B/S
-
E1
MSZ-EF50VEW/B/S
-
E1
MSZ-EF25VE2W/B/S
-
E1
MSZ-EF50VE2W/B/S
-
E1
MSZ-EF25VE2W/B/S
-
ER1
MSZ-EF50VE2W/B/S
-
ER1
MSZ-EF25VE3W/B/S
-
,
E1
E2
MSZ-EF50VE3W/B/S
-
,
E1
E2
MSZ-EF25VE3W/B/S
-
,
ER1
ER2
MSZ-EF50VE3W/B/S
-
,
ER1
ER2
MXZ-D∙VA Series (OBH626)
MXZ-8B Series (OCH480)
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················6
3. SPECIFICATION ········································9
4. NOISE CRITERIA CURVES ························ 11
5. OUTLINES AND DIMENSIONS ··················· 13
6. WIRING DIAGRAM ··································· 16
7. REFRIGERANT SYSTEM DIAGRAM ··········· 18
8. SERVICE FUNCTIONS ······························ 19
9. MICROPROCESSOR CONTROL ················ 21
10. TROUBLESHOOTING ······························· 29
11. DISASSEMBLY INSTRUCTIONS ················· 43
PARTS CATALOG (OBB589)
1
No. OBH589
REVISED EDITION-G
-
E1
-
E1
-
E1
-
E1
-
ER1
-
ER1
-
E1
-
E1
-
ER1
-
ER1
,
E2
,
E2
,
ER2
,
ER2
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric MUZ-EF-VE Series
Summary of Contents for Mitsubishi Electric MUZ-EF-VE Series
-
Page 1: Table Of Contents
Revision G: • 5. OUTLINES AND DIMENTIONS has been modified. • Some descriptions have been modified. OBH589 REVISED EDITION-F is void. INDOOR UNIT No. OBH589 SERVICE MANUAL REVISED EDITION-G Models MSZ-EF18VEW/B/S MSZ-EF22VEW/B/S MSZ-EF25VEW/B/S MSZ-EF35VEW/B/S MSZ-EF42VEW/B/S MSZ-EF50VEW/B/S MSZ-EF18VE2W/B/S MSZ-EF22VE2W/B/S MSZ-EF25VE2W/B/S MSZ-EF35VE2W/B/S MSZ-EF42VE2W/B/S MSZ-EF50VE2W/B/S MSZ-EF18VE2W/B/S... - Page 2 Use the specifi ed 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.
-
Page 3: Technical Changes
TECHNICAL CHANGES The following models are compatible with the outdoor units with low standby power control. Connecting the following models to the MUZ-EF·VE(H) series outdoor units enables the low standby power control. The following models may be connected to the MUZ-EF·VE(H) series after once connected to the MXZ series and operated, for example because of relocation. - Page 4 MSZ-EF18VE2W - MSZ-EF18VE3W - MSZ-EF22VE2W - MSZ-EF22VE3W - MSZ-EF25VE2W - MSZ-EF25VE3W - MSZ-EF35VE2W - MSZ-EF35VE3W - MSZ-EF42VE2W - MSZ-EF42VE3W - MSZ-EF50VE2W - MSZ-EF50VE3W - MSZ-EF18VE2B - MSZ-EF18VE3B - MSZ-EF22VE2B - MSZ-EF22VE3B - MSZ-EF25VE2B - MSZ-EF25VE3B - MSZ-EF35VE2B - MSZ-EF35VE3B - MSZ-EF42VE2B - MSZ-EF42VE3B - MSZ-EF50VE2B -...
- Page 5 MSZ-EF18VE3W - MSZ-EF18VE3W - MSZ-EF22VE3W - MSZ-EF22VE3W - MSZ-EF25VE3W - MSZ-EF25VE3W - MSZ-EF35VE3W - MSZ-EF35VE3W - MSZ-EF42VE3W - MSZ-EF42VE3W - MSZ-EF50VE3W - MSZ-EF50VE3W - MSZ-EF18VE3B - MSZ-EF18VE3B - MSZ-EF22VE3B - MSZ-EF22VE3B - MSZ-EF25VE3B - MSZ-EF25VE3B - MSZ-EF35VE3B - MSZ-EF35VE3B - MSZ-EF42VE3B - MSZ-EF42VE3B - MSZ-EF50VE3B -...
-
Page 6: Part Names And Functions
PART NAMES AND FUNCTIONS 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 Front panel Air fi lter (Nano platinum fi lter) Air cleaning fi lter (Electrostatic anti-allergy enzyme fi lter, option) Air inlet Emergency Horizontal vane... - Page 7 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 Front panel Air fi lter (Nano platinum fi lter) Air cleaning fi lter (Electrostatic anti-allergy enzyme fi lter) Air inlet Horizontal vane Emergency Air outlet operation switch...
- Page 8 MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S Front panel Air lter (Air purifying filter) Air cleaning lter (Silver-ionized air purifier filter) Air inlet Horizontal vane Emergency Air outlet operation switch Heat exchanger Operation Remote control...
-
Page 9: Specification
SPECIFICATION MSZ-EF18VEW MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF18VEB MSZ-EF18VES MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF18VE2W MSZ-EF22VE2W MSZ-EF25VE2W MSZ-EF35VE2W MSZ-EF22VE2B MSZ-EF25VE2B MSZ-EF35VE2B Indoor model MSZ-EF18VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S Power supply Single phase 230 V, 50 Hz Cooling Power input... - Page 10 MSZ-EF42VEW MSZ-EF42VE3W MSZ-EF50VEW MSZ-EF50VE3W MSZ-EF42VEB MSZ-EF42VE3B MSZ-EF50VEB MSZ-EF50VE3B MSZ-EF42VES MSZ-EF42VE3S MSZ-EF50VES MSZ-EF50VE3S Indoor model MSZ-EF42VE2W MSZ-EF50VE2W MSZ-EF42VE2B MSZ-EF50VE2B MSZ-EF42VE2S MSZ-EF50VE2S Power supply Single phase 230 V, 50 Hz Cooling Power input Heating Cooling 0.14 0.18 Running current Heating 0.30 0.32 Model RC0J40 Cooling...
-
Page 11: Noise Criteria Curves
NOISE CRITERIA CURVES MSZ-EF18VEW MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF18VEB MSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF18VES MSZ-EF22VES MSZ-EF25VES MSZ-EF35VES MSZ-EF18VE2W MSZ-EF22VE2W MSZ-EF25VE2W MSZ-EF35VE2W MSZ-EF18VE2B MSZ-EF22VE2B MSZ-EF25VE2B MSZ-EF35VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED... - Page 12 MSZ-EF42VEW MSZ-EF50VEW MSZ-EF42VEB MSZ-EF50VEB MSZ-EF42VES MSZ-EF50VES MSZ-EF42VE2W MSZ-EF50VE2W MSZ-EF42VE2B MSZ-EF50VE2B MSZ-EF42VE2S MSZ-EF50VE2S MSZ-EF50VE3W MSZ-EF42VE3W MSZ-EF50VE3B MSZ-EF42VE3B MSZ-EF50VE3S MSZ-EF42VE3S 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...
-
Page 13: Outlines And Dimensions
OUTLINES AND DIMENSIONS 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 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 (18/22/25/35/42), ø12.7 (50)) Drain hose Insulation ø28 O.D Connected part ø16 O.D... - Page 14 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 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 (18/22/25/35/42), ø12.7 (50)) Drain hose Insulation ø28 O.D Connected part ø16 O.D OBH589G...
- Page 15 MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S 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 (18/22/25/35/42), ø12.7 (50)) Drain hose Insulation ø28 O.D Connected part ø16 O.D OBH589G...
-
Page 16: Wiring Diagram
WIRING DIAGRAM 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-EF42VE2B MSZ-EF50VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF42VE2S MSZ-EF50VE2S OBH589G... - Page 17 MSZ-EF18VE3W- MSZ-EF22VE3W- MSZ-EF25VE3W- MSZ-EF35VE3W- MSZ-EF42VE3W- MSZ-EF50VE3W- MSZ-EF18VE3B- MSZ-EF22VE3B- MSZ-EF25VE3B- MSZ-EF35VE3B- MSZ-EF42VE3B- MSZ-EF50VE3B- MSZ-EF18VE3S- MSZ-EF22VE3S- MSZ-EF25VE3S- MSZ-EF35VE3S- MSZ-EF42VE3S- MSZ-EF50VE3S- MSZ-EF18VE3W- MSZ-EF22VE3W- MSZ-EF25VE3W- MSZ-EF35VE3W- MSZ-EF42VE3W- MSZ-EF50VE3W- MSZ-EF18VE3B- MSZ-EF22VE3B- MSZ-EF25VE3B- MSZ-EF35VE3B- MSZ-EF42VE3B- MSZ-EF50VE3B- MSZ-EF18VE3S- MSZ-EF22VE3S- MSZ-EF25VE3S- MSZ-EF35VE3S- MSZ-EF42VE3S- MSZ-EF50VE3S- OBH589G...
-
Page 18: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM 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-EF42VE2B MSZ-EF50VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF42VE2S MSZ-EF50VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S Unit: mm... -
Page 19: Service Functions
SERVICE FUNCTIONS 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-EF42VE2B MSZ-EF50VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF42VE2S MSZ-EF50VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S 8-1. - Page 20 8-3. HOW TO SET REMOTE CONTROLLER EXCLUSIVELY FOR A PARTICULAR INDOOR UNIT (MSZ-EF•VE2W/B/S, MSZ-EF•VE3W/B/S) A maximum of 4 indoor units with wireless remote controllers can be used in a room. To operate the indoor units individually with each remote controller, assign a number to each remote controller according to the number of the indoor unit.
-
Page 21: Microprocessor Control
MICROPROCESSOR CONTROL 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-EF42VE2B MSZ-EF50VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF42VE2S MSZ-EF50VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S WIRELESS REMOTE CONTROLLER... - Page 22 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 Signal transmitting section FAN SPEED CONTROL button Operation display section OPERATION SELECT button VANE CONTROL button ECONO COOL button TIME, TIMER set buttons FORWARD button BACKWARD button i save button...
- Page 23 9-1. COOL ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) (MSZ-EF·VE/VE2)/ STOP/OPERATE (OFF/ON) (MSZ-EF·VE3) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with OPERATION SELECT button. (3) Press TEMPERATURE buttons TEMP button to select the desired temperature.
- Page 24 NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series Multi system air conditioner can connect 2 or more indoor units with one outdoor unit. • When you try to operate 2 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 25 (9) ECONO COOL ( ) operation (ECONOmical operation) When ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher by micro- processor. However, the temperature on the LCD screen on the remote controller is not changed. Also the horizontal vane swings in various cycle.
- Page 26 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 •...
- Page 27 (4) Press button to complete and transmit the weekly timer setting. which was blink- ing goes out, and the current time will be displayed. NOTE: • Press button to transmit the setting information of weekly timer to the indoor unit. Point the remote controller toward the indoor unit for 3 seconds.
- Page 28 9-10. EMERGENCY/TEST OPERATION In the case of test run operation or emergency operation, use Operation mode COOL/HEAT EMERGENCY OPERATION switch on the right side of the indoor unit. Set temperature 24°C Emergency operation is available when the remote controller is missing Fan speed Med.
-
Page 29: Troubleshooting
TROUBLESHOOTING 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-EF42VE2B MSZ-EF50VE2B MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S MSZ-EF35VE2S MSZ-EF42VE2S MSZ-EF50VE2S MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S 10-1. - Page 30 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 31 2. Indoor unit failure mode table The left lamp of Abnormal point OPERATION INDI- Condition Remedy (Failure mode) CATOR lamp Not lit Normal — — The room temperature thermistor short or 1-time blink every Room temperature Refer to the characteristics of the room temperature open circuit is detected every 8 seconds dur- 0.5-second thermistor...
- Page 32 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 blinking ON and OFF. mote controller.
- Page 33 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 34 OPERATION INDICATOR Abnormal Operation indicator lamp Symptom Condition Remedy point Left 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 • Unify the operation mode. Operation operates but HEAT at the same time, the operation mode...
- Page 35 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 36 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) (MSZ- EF·VE/VE2)/ STOP/OPERATE (OFF/ ON) (MSZ-EF·VE3) button on the remote controller. 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.
- Page 37 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 38 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. Was the indoor unit ever connected to the Multi (MXZ) series and operated (turned on)? The connection information to the Multi series is stored...
- Page 39 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 40 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 41 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-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 Fuse (F11) Varistor (NR11) Indoor fan motor Indoor power P.C.
- Page 42 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 MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W MSZ-EF42VE3W MSZ-EF50VE3W MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B MSZ-EF42VE3B MSZ-EF50VE3B MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S MSZ-EF42VE3S MSZ-EF50VE3S Fuse (F11) Varistor (NR11) Indoor fan motor Indoor power P.C.
-
Page 43: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <Detaching method of the terminal with lockig mechanism> The terminal which has the locking mechanism can be detached as shown below. There are 2 types of terminals with locking mechanisms. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. - Page 44 OPERATING PROCEDURE PHOTOS/FIGURES 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 45 OPERATING PROCEDURE PHOTOS/FIGURES 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 46 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the indoor fan motor, the indoor coil Photo 5 Lead wire of thermistor and the line flow fan the indoor coil thermistor (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 47 Fixing the indoor coil thermistor There are 2 forms of parts for fixing the indoor coil thermistor. When fixing the indoor coil thermistor to the clip-shape/holder-shape part, the Clip shape Holder shape lead wire should point down. About the same length Position and procedure for mounting the clip-shape part 1.
- Page 48 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2010 MITSUBISHI ELECTRIC CORPORATION Issued: Oct. 2018. No. OBH589 REVISED EDITION-G Issued: Dec. 2017. No. OBH589 REVISED EDITION-F Issued: Dec. 2015. No. OBH589 REVISED EDITION-E Issued: Mar. 2014. No. OBH589 REVISED EDITION-D Issued: Jan.