Mitsubishi MSZ-EF35VEW, MSZ-EF35VES, MSZ-EF35VEB, MSZ-EF18VES, MSZ-EF18VE2W Service 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 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.

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 fi xing 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 fi xing 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 fi lter 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

W

14

Heating 27 31

Running
current 1

Cooling

A

0.14

Heating 0.26 0.30

Fan

motor

Model RC0J40

Current 1

Cooling

A

0.14

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

Airfl ow

Cooling

Super High

m3/h

630
High 498
Med. 378
Low 276
Silent 240

Heating

Super High

m

3

/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

W

14 18

Heating 31 34

Running
current

1

Cooling

A

0.14 0.18

Heating 0.30 0.32

Fan

motor

Model RC0J40

Current 1

Cooling

A

0.14 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

Airfl ow

Cooling

Super High

m3/h

618 660
High 534 558
Med. 462 474
Low 396 408
Silent 348

Heating

Super High

m

3

/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

11

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

OBH589D

12

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

OBH589D

13

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

OBH589D