Mitsubishi Electric MSZ-EF18VEW User manual

CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS····················· 4
3. SPECIFICATION················································ 6
4. NOISE CRITERIA CURVES······························ 8
5. OUTLINES AND DIMENSIONS ······················ 10
6. WIRING DIAGRAM·········································· 12
7. REFRIGERANT SYSTEM DIAGRAM············· 13
8. SERVICE FUNCTIONS ··································· 14
9. MICROPROCESSOR CONTROL ··················· 16
10. TROUBLESHOOTING····································· 24
11. DISASSEMBLY INSTRUCTIONS···················· 38
SPLIT-TYPE AIR CONDITIONERS
SERVICE MANUAL No. OBH589
REVISED EDITION-D
INDOOR UNIT
PARTS CATALOG (OBB589)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Models
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
MSZ-EF18VE2W -E1 ,ER1 MSZ-EF22VE2W -E1 ,ER1 MSZ-EF25VE2W -E1 ,ER1
MSZ-EF35VE2W -E1 ,ER1 MSZ-EF42VE2W -E1 ,ER1 MSZ-EF50VE2W -E1 ,ER1
MSZ-EF18VE2B -E1 ,ER1 MSZ-EF22VE2B -E1 ,ER1 MSZ-EF25VE2B -E1 ,ER1
MSZ-EF35VE2B -E1 ,ER1 MSZ-EF42VE2B -E1 ,ER1 MSZ-EF50VE2B -E1 ,ER1
MSZ-EF18VE2S -E1 ,ER1 MSZ-EF22VE2S -E1 ,ER1 MSZ-EF25VE2S -E1 ,ER1
MSZ-EF35VE2S -E1 ,ER1 MSZ-EF42VE2S -E1 ,ER1 MSZ-EF50VE2S -E1 ,ER1
MXZ-D·VA Series (OBH626)
MXZ-8B Series (OCH480)
Please void OBH589 REVISED EDITION-C.
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.
Outdoor unit service manual
MUZ-EF·VE(H) Series (OBH590)
MXZ-C·VA Series (OB584)
MSZ-EF·VEW
MSZ-EF·VEB
MSZ-EF·VES

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.
OBH589D

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. Refer to
the technical guide (OBT17) about 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.
OBH589D

4
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
OBH589D

5
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
OBH589D

6
Indoor model
MSZ-EF18VEW
MSZ-EF18VEB
MSZ-EF18VES
MSZ-EF18VE2W
MSZ-EF18VE2B
MSZ-EF18VE2S
MSZ-EF22VEW
MSZ-EF22VEB
MSZ-EF22VES
MSZ-EF22VE2W
MSZ-EF22VE2B
MSZ-EF22VE2S
MSZ-EF25VEW
MSZ-EF25VEB
MSZ-EF25VES
MSZ-EF25VE2W
MSZ-EF25VE2B
MSZ-EF25VE2S
MSZ-EF35VEW
MSZ-EF35VEB
MSZ-EF35VES
MSZ-EF35VE2W
MSZ-EF35VE2B
MSZ-EF35VE2S
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1
Cooling W14
Heating 27 31
Running
current 1
Cooling A0.14
Heating 0.26 0.30
Fan motor
Model RC0J40
Current 1 Cooling 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)
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)
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
OBH589D

7
Specifications and rated conditions of main electric parts
Fuse (F11) T3.15AL250V
Horizontal vane motor (MV) 12 VDC
Varistor (NR11) S10K300E2K1 (ERZV10D471)
Terminal block (TB) 3P
Indoor model
MSZ-EF42VEW
MSZ-EF42VEB
MSZ-EF42VES
MSZ-EF42VE2W
MSZ-EF42VE2B
MSZ-EF42VE2S
MSZ-EF50VEW
MSZ-EF50VEB
MSZ-EF50VES
MSZ-EF50VE2W
MSZ-EF50VE2B
MSZ-EF50VE2S
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1
Cooling W14 18
Heating 31 34
Running
current 1
Cooling A0.14 0.18
Heating 0.30 0.32
Fan motor
Model RC0J40
Current 1 Cooling 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)
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)
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.
OBH589D

8
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
OBH589D

9
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
OBH589D

10
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
OBH589D