Mitsubishi Electric MUZ-EF-VE Series User manual

1
INDOOR UNIT No. OBH589
REVISED EDITION-G
OBH589 REVISED EDITION-F is void.
Models
MSZ-EF18VEW/B/S -E1 MSZ-EF22VEW/B/S -E1 MSZ-EF25VEW/B/S -E1
MSZ-EF35VEW/B/S -E1 MSZ-EF42VEW/B/S -E1 MSZ-EF50VEW/B/S -E1
MSZ-EF18VE2W/B/S -E1 MSZ-EF22VE2W/B/S -E1 MSZ-EF25VE2W/B/S -E1
MSZ-EF35VE2W/B/S -E1 MSZ-EF42VE2W/B/S -E1 MSZ-EF50VE2W/B/S -E1
MSZ-EF18VE2W/B/S -ER1 MSZ-EF22VE2W/B/S -ER1 MSZ-EF25VE2W/B/S -ER1
MSZ-EF35VE2W/B/S -ER1 MSZ-EF42VE2W/B/S -ER1 MSZ-EF50VE2W/B/S -ER1
MSZ-EF18VE3W/B/S -E1 , E2 MSZ-EF22VE3W/B/S -E1 , E2 MSZ-EF25VE3W/B/S -E1 , E2
MSZ-EF35VE3W/B/S -E1 , E2 MSZ-EF42VE3W/B/S -E1 , E2 MSZ-EF50VE3W/B/S -E1 , E2
MSZ-EF22VE3W/B/S -ER1 , ER2 MSZ-EF25VE3W/B/S -ER1 , ER2
MSZ-EF35VE3W/B/S -ER1 , ER2 MSZ-EF42VE3W/B/S -ER1 , ER2 MSZ-EF50VE3W/B/S -ER1 , ER2
MSZ-EF∙VEW
MSZ-EF∙VEB
MSZ-EF∙VES PARTS CATALOG (OBB589)
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
MXZ-D∙VA Series (OBH626)
MXZ-8B Series (OCH480)
Outdoor unit service manual
MUZ-EF∙VE(H) Series (OBH590)
MXZ-C∙VA Series (OB584)
SERVICE MANUAL
Revision G:
• 5. OUTLINES AND DIMENTIONS has been
modified.
• Some descriptions have been modified.

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>
Do not perform the work involving the electric parts with wet hands.
Do not pour water into the electric parts.
Do not touch the refrigerant.
Do not touch the hot or cold areas in the refrigeration cycle.
When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to
touch the live parts.
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 A:
• Airflow in the Silent mode in the cooling operation has been changed.
• "TROUBLESHOOTING" has been corrected (10-2, 10-4).
Revision B:
• MSZ-EF18VEW - E1 , MSZ-EF18VEB - E1 and MSZ-EF18VES - E1 have been added.
Revision C:
• MSZ-EF18/22/25/35/42/50VE2W - E1 , ER1 , MSZ-EF18/22/25/35/42/50VE2B - E1 , ER1 and MSZ-EF18/22/25/35/42/50VE2S
- E1 , ER1 have been added.
Revision D:
• The descriptions of the dimensions for MSZ-EF18/22/25/35/42/50VE2W - E1 , ER1 , MSZ-EF18/22/25/35/42/50VE2B - E1 ,
ER1 and MSZ-EF18/22/25/35/42/50VE2S - E1 , ER1 have been modified.
Revision E:
• MSZ-EF18/22/25/35/42/50VE3W -
E1
, MSZ-EF18/22/25/35/42/50VE3B -
E1
, MSZ-EF18/22/25/35/42/50VE3S -
E1
, MSZ-
EF22/25/35/42/50VE3W -
ER1
, MSZ-EF22/25/35/42/50VE3B -
ER1
and MSZ-EF22/25/35/42/50VE3S -
ER1
have been added.
Revision F:
• MSZ-EF18/22/25/35/42/50VE3W - E2 , MSZ-EF22/25/35/42/50VE3W - ER2 , MSZ-EF18/22/25/35/42/50VE3B - E2 ,
MSZ-EF22/25/35/42/50VE3B - ER2 , MSZ-EF18/22/25/35/42/50VE3S - E2 and MSZ-EF22/25/35/42/50VE3S - ER2 have
been added.
Revision G:
• 5. OUTLINES AND DIMENTIONS has been modified.
• Some descriptions have been modified.
OBH589G

3
TECHNICAL CHANGES
1
MSZ-EF18VEW - E1 MSZ-EF22VEW - E1 MSZ-EF25VEW - E1
MSZ-EF35VEW - E1 MSZ-EF42VEW - E1 MSZ-EF50VEW - E1
MSZ-EF18VEB - E1 MSZ-EF22VEB - E1 MSZ-EF25VEB - E1
MSZ-EF35VEB - E1 MSZ-EF42VEB - E1 MSZ-EF50VEB - E1
MSZ-EF18VES - E1 MSZ-EF22VES - E1 MSZ-EF25VES - E1
MSZ-EF35VES - E1 MSZ-EF42VES - E1 MSZ-EF50VES - E1
1. New model
MSZ-EF18VEW - E1 MSZ-EF18VE2W - E1
MSZ-EF22VEW - E1 MSZ-EF22VE2W - E1
MSZ-EF25VEW - E1 MSZ-EF25VE2W - E1
MSZ-EF35VEW - E1 MSZ-EF35VE2W - E1
MSZ-EF42VEW - E1 MSZ-EF42VE2W - E1
MSZ-EF50VEW - E1 MSZ-EF50VE2W - E1
MSZ-EF18VEB - E1 MSZ-EF18VE2B - E1
MSZ-EF22VEB - E1 MSZ-EF22VE2B - E1
MSZ-EF25VEB - E1 MSZ-EF25VE2B - E1
MSZ-EF35VEB - E1 MSZ-EF35VE2B - E1
MSZ-EF42VEB - E1 MSZ-EF42VE2B - E1
MSZ-EF50VEB - E1 MSZ-EF50VE2B - E1
MSZ-EF18VES - E1 MSZ-EF18VE2S - E1
MSZ-EF22VES - E1 MSZ-EF22VE2S - E1
MSZ-EF25VES - E1 MSZ-EF25VE2S - E1
MSZ-EF35VES - E1 MSZ-EF35VE2S - E1
MSZ-EF42VES - E1 MSZ-EF42VE2S - E1
MSZ-EF50VES - E1 MSZ-EF50VE2S - E1
1. Front panel has been changed.
2. Panel assembly has been changed.
3. Remote controller has been changed.
MSZ-EF18VE2W - ER1 MSZ-EF22VE2W - ER1 MSZ-EF25VE2W - ER1
MSZ-EF35VE2W - ER1 MSZ-EF42VE2W - ER1 MSZ-EF50VE2W - ER1
MSZ-EF18VE2B - ER1 MSZ-EF22VE2B - ER1 MSZ-EF25VE2B - ER1
MSZ-EF35VE2B - ER1 MSZ-EF42VE2B - ER1 MSZ-EF50VE2B - ER1
MSZ-EF18VE2S - ER1 MSZ-EF22VE2S - ER1 MSZ-EF25VE2S - ER1
MSZ-EF35VE2S - ER1 MSZ-EF42VE2S - ER1 MSZ-EF50VE2S - ER1
1. New model
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. In that case, the MUZ-EF·VE(H) series outdoor units will not operate without taking a step.
Follow the procedure "Deleting the memorized abnormal condition" described in 10-2.1.
OBH589G

4
MSZ-EF18VE2W - E1 MSZ-EF18VE3W - E1
MSZ-EF22VE2W - E1 MSZ-EF22VE3W - E1
MSZ-EF25VE2W - E1 MSZ-EF25VE3W - E1
MSZ-EF35VE2W - E1 MSZ-EF35VE3W - E1
MSZ-EF42VE2W - E1 MSZ-EF42VE3W - E1
MSZ-EF50VE2W - E1 MSZ-EF50VE3W - E1
MSZ-EF18VE2B - E1 MSZ-EF18VE3B - E1
MSZ-EF22VE2B - E1 MSZ-EF22VE3B - E1
MSZ-EF25VE2B - E1 MSZ-EF25VE3B - E1
MSZ-EF35VE2B - E1 MSZ-EF35VE3B - E1
MSZ-EF42VE2B - E1 MSZ-EF42VE3B - E1
MSZ-EF50VE2B - E1 MSZ-EF50VE3B - E1
MSZ-EF18VE2S - E1 MSZ-EF18VE3S - E1
MSZ-EF22VE2S - E1 MSZ-EF22VE3S - E1
MSZ-EF25VE2S - E1 MSZ-EF25VE3S - E1
MSZ-EF35VE2S - E1 MSZ-EF35VE3S - E1
MSZ-EF42VE2S - E1 MSZ-EF42VE3S - E1
MSZ-EF50VE2S - E1
MSZ-EF50VE3S - E1
1. Air filter has been changed.
2. Air cleaning filter has been changed.
MSZ-EF22VE2W - ER1 MSZ-EF22VE3W - ER1
MSZ-EF25VE2W - ER1 MSZ-EF25VE3W - ER1
MSZ-EF35VE2W - ER1 MSZ-EF35VE3W - ER1
MSZ-EF42VE2W - ER1 MSZ-EF42VE3W - ER1
MSZ-EF50VE2W - ER1 MSZ-EF50VE3W - ER1
MSZ-EF18VE2B - ER1 MSZ-EF18VE3B - ER1
MSZ-EF22VE2B - ER1 MSZ-EF22VE3B - ER1
MSZ-EF25VE2B - ER1 MSZ-EF25VE3B - ER1
MSZ-EF35VE2B - ER1 MSZ-EF35VE3B - ER1
MSZ-EF42VE2B - ER1 MSZ-EF42VE3B - ER1
MSZ-EF50VE2B - ER1 MSZ-EF50VE3B - ER1
MSZ-EF18VE2S - ER1 MSZ-EF18VE3S - ER1
MSZ-EF22VE2S - ER1 MSZ-EF22VE3S - ER1
MSZ-EF25VE2S - ER1 MSZ-EF25VE3S - ER1
MSZ-EF35VE2S - ER1 MSZ-EF35VE3S - ER1
MSZ-EF42VE2S - ER1 MSZ-EF42VE3S - ER1
MSZ-EF50VE2S - ER1 MSZ-EF50VE3S - ER1
1. Air filter has been changed.
2. Air cleaning filter has been changed.
OBH589G

5
MSZ-EF18VE3W - E1 MSZ-EF18VE3W - E2
MSZ-EF22VE3W - E1 MSZ-EF22VE3W - E2
MSZ-EF25VE3W - E1 MSZ-EF25VE3W - E2
MSZ-EF35VE3W - E1 MSZ-EF35VE3W - E2
MSZ-EF42VE3W - E1 MSZ-EF42VE3W - E2
MSZ-EF50VE3W - E1 MSZ-EF50VE3W - E2
MSZ-EF18VE3B - E1 MSZ-EF18VE3B - E2
MSZ-EF22VE3B - E1 MSZ-EF22VE3B - E2
MSZ-EF25VE3B - E1 MSZ-EF25VE3B - E2
MSZ-EF35VE3B - E1 MSZ-EF35VE3B - E2
MSZ-EF42VE3B - E1 MSZ-EF42VE3B - E2
MSZ-EF50VE3B - E1 MSZ-EF50VE3B - E2
MSZ-EF18VE3S - E1 MSZ-EF18VE3S - E2
MSZ-EF22VE3S - E1 MSZ-EF22VE3S - E2
MSZ-EF25VE3S - E1 MSZ-EF25VE3S - E2
MSZ-EF35VE3S - E1 MSZ-EF35VE3S - E2
MSZ-EF42VE3S - E1 MSZ-EF42VE3S - E2
MSZ-EF50VE3S - E1
MSZ-EF50VE3S - E2
MSZ-EF22VE3W - ER1 MSZ-EF22VE3W - ER2
MSZ-EF25VE3W - ER1 MSZ-EF25VE3W - ER2
MSZ-EF35VE3W - ER1 MSZ-EF35VE3W - ER2
MSZ-EF42VE3W - ER1 MSZ-EF42VE3W - ER2
MSZ-EF50VE3W - ER1 MSZ-EF50VE3W - ER2
MSZ-EF22VE3B - ER1 MSZ-EF22VE3B - ER2
MSZ-EF25VE3B - ER1 MSZ-EF25VE3B - ER2
MSZ-EF35VE3B - ER1 MSZ-EF35VE3B - ER2
MSZ-EF42VE3B - ER1 MSZ-EF42VE3B - ER2
MSZ-EF50VE3B - ER1 MSZ-EF50VE3B - ER2
MSZ-EF22VE3S - ER1 MSZ-EF22VE3S - ER2
MSZ-EF25VE3S - ER1 MSZ-EF25VE3S - ER2
MSZ-EF35VE3S - ER1 MSZ-EF35VE3S - ER2
MSZ-EF42VE3S - ER1 MSZ-EF42VE3S - ER2
MSZ-EF50VE3S - ER1 MSZ-EF50VE3S - ER2
1. These models came to be connected to the multi outdoor units using refrigerant R32.
OBH589G

6
ACCESSORIES
PART NAMES AND FUNCTIONS
2
Model
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-EF42VEW MSZ-EF50VEW
MSZ-EF42VEB MSZ-EF50VEB
MSZ-EF42VES MSZ-EF50VES
Installation plate 1
Installation plate fixing screw 4 × 25 mm 5
Remote controller holder 1
Fixing screw for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Soft dry cloth (VEB type only) 1
Operation
indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air filter
(Nano platinum filter)
Air cleaning filter
(Electrostatic anti-allergy
enzyme filter, option)
Heat exchanger
Front panel
Air outlet
Remote controller
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
OBH589G

7
ACCESSORIES
Model
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-EF42VE2W MSZ-EF50VE2W
MSZ-EF42VE2B MSZ-EF50VE2B
MSZ-EF42VE2S MSZ-EF50VE2S
Installation plate 1
Installation plate fixing screw 4 × 25 mm 5
Remote controller holder 1
Fixing screw for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Soft dry cloth (VEB type only) 1
Air cleaning filter 2
Remote controller
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
Operation
indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air filter
(Nano platinum filter)
Air cleaning filter
(Electrostatic anti-allergy
enzyme filter)
Heat exchanger
Front panel
Air outlet
OBH589G

8
ACCESSORIES
Model
MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W MSZ-EF35VE3W
MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B MSZ-EF35VE3B
MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S MSZ-EF35VE3S
MSZ-EF42VE3W MSZ-EF50VE3W
MSZ-EF42VE3B MSZ-EF50VE3B
MSZ-EF42VE3S MSZ-EF50VE3S
Installation plate 1
Installation plate fixing screw 4 × 25 mm 5
Remote controller holder 1
Fixing screw for 3.5 × 16 mm (Black) 2
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Soft dry cloth (VEB type only) 1
Air cleaning filter 2
Remote controller
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
Operation
indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air ¿lter
(Air purifying filter)
Air cleaning ¿lter
(Silver-ionized air purifier
filter)
Heat exchanger
Front panel
Air outlet
OBH589G

9
Indoor model
MSZ-EF18VEW
MSZ-EF18VEB
MSZ-EF18VES
MSZ-EF18VE2W
MSZ-EF18VE2B
MSZ-EF18VE2S
MSZ-EF18VE3W
MSZ-EF18VE3B
MSZ-EF18VE3S
MSZ-EF22VEW
MSZ-EF22VEB
MSZ-EF22VES
MSZ-EF22VE2W
MSZ-EF22VE2B
MSZ-EF22VE2S
MSZ-EF22VE3W
MSZ-EF22VE3B
MSZ-EF22VE3S
MSZ-EF25VEW
MSZ-EF25VEB
MSZ-EF25VES
MSZ-EF25VE2W
MSZ-EF25VE2B
MSZ-EF25VE2S
MSZ-EF25VE3W
MSZ-EF25VE3B
MSZ-EF25VE3S
MSZ-EF35VEW
MSZ-EF35VEB
MSZ-EF35VES
MSZ-EF35VE2W
MSZ-EF35VE2B
MSZ-EF35VE2S
MSZ-EF35VE3W
MSZ-EF35VE3B
MSZ-EF35VE3S
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1Cooling W14
Heating 27 31
Running
current 1Cooling A0.14
Heating 0.26 0.30
Fan motor
Model RC0J40
Current 1Cooling A0.14
Heating 0.26 0.30
Dimensions W × H × D mm 895 × 299 × 195 (EF•VEW/B/S) / 885 × 299 × 195 (EF•VE2W/B/S, EF•VE3W/B/S)
Weight kg 11.5
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
630
High 498
Med. 378
Low 276
Silent 240
Heating
Super High
m3/h
714 762
High 534
Med. 372
Low 276
Silent 240
Sound level
Cooling
Super High
dB(A)
42
High 36
Med. 29
Low 23 24
Silent 21
Heating
Super High
dB(A)
45 46
High 37 38
Med. 29 30
Low 24
Silent 21
Fan speed
Cooling
Super High
rpm
1,200
High 990
Med. 800
Low 630
Silent 570
Heating
Super High
rpm
1,330 1,400
High 1,050
Med. 790
Low 630
Silent 570
Fan speed regulator 5
Remote controller model SG11D (EF•VEW/B/S)/ SG14D (EF•VE2W/B/S)/ SG15D (EF•VE3W/B/S)
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C
Heating: Indoor Dry-bulb temperature 20°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
1 Measured under rated operating frequency.
SPECIFICATION
3
OBH589G

10
Specifications and rated conditions of main electric parts
Fuse (F11) T3.15AL250V
Horizontal vane motor (MV) 12 V DC
Varistor (NR11) 470 V
Terminal block (TB) 3P
Indoor model
MSZ-EF42VEW MSZ-EF42VE3W
MSZ-EF42VEB MSZ-EF42VE3B
MSZ-EF42VES MSZ-EF42VE3S
MSZ-EF42VE2W
MSZ-EF42VE2B
MSZ-EF42VE2S
MSZ-EF50VEW MSZ-EF50VE3W
MSZ-EF50VEB MSZ-EF50VE3B
MSZ-EF50VES MSZ-EF50VE3S
MSZ-EF50VE2W
MSZ-EF50VE2B
MSZ-EF50VE2S
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1Cooling W14 18
Heating 31 34
Running
current 1Cooling A0.14 0.18
Heating 0.30 0.32
Fan motor
Model RC0J40
Current 1Cooling A0.14 0.18
Heating 0.30 0.32
Dimensions W × H × D mm 895 × 299 × 195 (EF•VEW/B/S) / 885 × 299 × 195 (EF•VE2W/B/S, EF•VE3W/B/S)
Weight kg 11.5
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
618 660
High 534 558
Med. 462 474
Low 396 408
Silent 348
Heating
Super High
m3/h
762 792
High 594 666
Med. 468 540
Low 378 438
Silent 330 384
Sound level
Cooling
Super High
dB(A)
42 43
High 39 40
Med. 35 36
Low 31 33
Silent 28 30
Heating
Super High
dB(A)
48 49
High 41 43
Med. 35 37
Low 30 33
Silent 28 30
Fan speed
Cooling
Super High
rpm
1,180 1,240
High 1,050 1,080
Med. 930 950
Low 830 850
Silent 750
Heating
Super High
rpm
1,400 1,440
High 1,140 1,250
Med. 940 1,060
Low 800 890
Silent 720 810
Fan speed regulator 5
Remote controller model SG11D (EF•VEW/B/S)/ SG14D (EF•VE2W/B/S)/ SG15D (EF•VE3W/B/S)
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C
Heating: Indoor Dry-bulb temperature 20°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
1 Measured under rated operating frequency.
OBH589G

11
MSZ-EF18VEW MSZ-EF22VEW MSZ-EF25VEW
MSZ-EF18VEB MSZ-EF22VEB MSZ-EF25VEB
MSZ-EF18VES MSZ-EF22VES MSZ-EF25VES
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
46
NC-10
MSZ-EF35VEW
MSZ-EF35VEB
MSZ-EF35VES
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
45
NC-10
NOISE CRITERIA CURVES
4
MSZ-EF18VE2W MSZ-EF22VE2W MSZ-EF25VE2W
MSZ-EF18VE2B MSZ-EF22VE2B MSZ-EF25VE2B
MSZ-EF18VE2S MSZ-EF22VE2S MSZ-EF25VE2S
MSZ-EF35VE2W
MSZ-EF35VE2B
MSZ-EF35VE2S
MSZ-EF18VE3W MSZ-EF22VE3W MSZ-EF25VE3W
MSZ-EF18VE3B MSZ-EF22VE3B MSZ-EF25VE3B
MSZ-EF18VE3S MSZ-EF22VE3S MSZ-EF25VE3S
MSZ-EF35VE3W
MSZ-EF35VE3B
MSZ-EF35VE3S
OBH589G

12
Test conditions
Cooling: Dry-bulb temperature 27 °C
Wet-bulb temperature 19 °C
Heating: Dry-bulb temperature 20 °C
INDOOR UNIT WALL
MICROPHONE
0.8m
1m
MSZ-EF42VEW
MSZ-EF42VEB
MSZ-EF42VES
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
43
49
NC-10
MSZ-EF50VEW
MSZ-EF50VEB
MSZ-EF50VES
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, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
48
NC-10
MSZ-EF42VE2W
MSZ-EF42VE2B
MSZ-EF42VE2S
MSZ-EF50VE2W
MSZ-EF50VE2B
MSZ-EF50VE2S
MSZ-EF42VE3W
MSZ-EF42VE3B
MSZ-EF42VE3S
MSZ-EF50VE3W
MSZ-EF50VE3B
MSZ-EF50VE3S
OBH589G

13
Unit: mm
Piping
Insulation ø37 O.D
Liquid line ø6.35 - 0.5 m (Flared connection ø6.35)
Gas line ø9.52 - 0.43 m
(Flared connection: ø9.52 (18/22/25/35/42), ø12.7 (50))
Drain hose Insulation ø28 O.D Connected part ø16 O.D
OUTLINES AND DIMENSIONS
5
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
OBH589G

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
Piping
Insulation ø37 O.D
Liquid line ø6.35 - 0.5 m (Flared connection ø6.35)
Gas line ø9.52 - 0.43 m
(Flared connection: ø9.52 (18/22/25/35/42), ø12.7 (50))
Drain hose Insulation ø28 O.D Connected part ø16 O.D
OBH589G

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
Piping
Insulation ø37 O.D
Liquid line ø6.35 - 0.5 m (Flared connection ø6.35)
Gas line ø9.52 - 0.43 m
(Flared connection: ø9.52 (18/22/25/35/42), ø12.7 (50))
Drain hose Insulation ø28 O.D Connected part ø16 O.D
OBH589G

16
WIRING DIAGRAM
6
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

17
MSZ-EF18VE3W-
E2
MSZ-EF22VE3W-
E2
,
ER2
MSZ-EF25VE3W-
E2
,
ER2
MSZ-EF35VE3W-
E2
,
ER2
MSZ-EF42VE3W-
E2
,
ER2
MSZ-EF50VE3W-
E2
,
ER2
MSZ-EF18VE3B-
E2
MSZ-EF22VE3B-
E2
,
ER2
MSZ-EF25VE3B-
E2
,
ER2
MSZ-EF35VE3B-
E2
,
ER2
MSZ-EF42VE3B-
E2
,
ER2
MSZ-EF50VE3B-
E2
,
ER2
MSZ-EF18VE3S-
E2
MSZ-EF22VE3S-
E2
,
ER2
MSZ-EF25VE3S-
E2
,
ER2
MSZ-EF35VE3S-
E2
,
ER2
MSZ-EF42VE3S-
E2
,
ER2
MSZ-EF50VE3S-
E2
,
ER2
MSZ-EF18VE3W-
E1
MSZ-EF22VE3W-
E1
,
ER1
MSZ-EF25VE3W-
E1
,
ER1
MSZ-EF35VE3W-
E1
,
ER1
MSZ-EF42VE3W-
E1
,
ER1
MSZ-EF50VE3W-
E1
,
ER1
MSZ-EF18VE3B-
E1
MSZ-EF22VE3B-
E1
,
ER1
MSZ-EF25VE3B-
E1
,
ER1
MSZ-EF35VE3B-
E1
,
ER1
MSZ-EF42VE3B-
E1
,
ER1
MSZ-EF50VE3B-
E1
,
ER1
MSZ-EF18VE3S-
E1
MSZ-EF22VE3S-
E1
,
ER1
MSZ-EF25VE3S-
E1
,
ER1
MSZ-EF35VE3S-
E1
,
ER1
MSZ-EF42VE3S-
E1
,
ER1
MSZ-EF50VE3S-
E1
,
ER1
OBH589G

18
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Flared connection
Refrigerant pipe ø9.52 (MSZ-EF18/22/25/35/42)
ø12.7 (MSZ-EF50)
(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
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
OBH589G

19
8-1. TIMER SHORT MODE
For service, the following set time can be shortened by bridging JPG and JPS on the electronic control P.C. board.
(Refer to 10-7.)
• The set time for the ON/OFF timer can be reduced to 1 second for each minute.
• After the breaker is turned on, the time for starting the compressor, which normally takes 3 minutes, can be reduced to 1
minute. Restarting the compressor, which takes 3 minutes, cannot be reduced.
8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION ( MSZ-EF•VEW/B/S)
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the number of the indoor unit.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below:
The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.
After modification, press the RESET button.
NOTE: For modification, take out the batteries and press the OPERATE/STOP (ON/OFF) (MSZ-EF·VE/VE2)/ STOP/OPERATE
(OFF/ON) (MSZ-EF·VE3) button 2 or 3 times at first.
After modification, put back the batteries then press the RESET button.
Table 1
1 unit operation 2 units operation 3 units operation 4 units operation
No. 1 unit No modification Same as at left Same as at left Same as at left
No. 2 unit — Solder J1 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 controller that has been assigned to the indoor unit once they are set.
The setting will be cancelled if the breaker is turned OFF, or the power supply is shut down.
Please conduct the above setting once again after the power has restored.
SERVICE FUNCTIONS
8
J1 J2
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
OBH589G

20
8-4. 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.
(However, it takes at least 3 minutes for the compressor to start running.)
How to disable “AUTO RESTART FUNCTION”
Turn off the main power for the unit.
Solder the jumper wire to JR07 on the indoor electronic control P.C. board (MSZ-EF•VEW/B/S).
Cut the jumper wire to JR77 on the indoor electronic control P.C. board (MSZ-EF•VE2W/B/S, MSZ-EF•VE3W/B/S).
(Refer to 10-7.)
NOTE:
• The operation settings are memorized when 10 seconds have passed after 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 current, systematize other home appliance not to turn ON at the same
time.
• When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current
by adding to the system that allows the units to start one by one.
JR07
IC171
CN104CN112
BZ
Indoor electronic
control P.C. board
JR77
IC171
CN104CN112
BZ
Indoor electronic
control P.C. board
MSZ-EF•VEW/B/S MSZ-EF•VE3W/B/S
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.
This setting can be set only when all the following conditions are met:
• The remote controller is powered OFF.
• Weekly timer is not set.
• Weekly timer is not being edited.
(1) Hold down button on the remote controller for 2 seconds to enter the pairing mode.
(2) Press button again and assign a number to each remote controller.
Each press of button advances the number in the following order: 1 →2 →3 →4.
(3) Press button to complete the pairing setting.
After you turn the breaker ON, the remote controller that first sends a signal to an indoor unit will be regarded as the
remote controller for the indoor unit.
Once they are set, the indoor unit will only receive the signal from the assigned remote controller afterwards.
MSZ-EF•VE2W/B/S
OBH589G