Mitsubishi Electric MUZ-EF VG Series User manual

1
INDOOR UNIT No. OBH831
REVISED EDITION-A
Models
MSZ-EF18VGW/B/S -E1 ,E2 MSZ-EF18VGKW/B/S -E1
MSZ-EF22VGW/B/S -E1 ,ET1 ,E2 ,ET2 MSZ-EF22VGKW/B/S -E1 ,ET1
MSZ-EF25VGW/B/S -E1 ,ET1 ,E2 ,ET2 MSZ-EF25VGKW/B/S -E1 ,ET1
MSZ-EF35VGW/B/S -E1 ,ET1 ,E2 ,ET2 MSZ-EF35VGKW/B/S -E1 ,ET1
MSZ-EF42VGW/B/S -E1 ,ET1 ,E2 ,ET2 MSZ-EF42VGKW/B/S -E1 ,ET1
MSZ-EF50VGW/B/S -E1 ,ET1 ,E2 ,ET2 MSZ-EF50VGKW/B/S -E1 ,ET1
MSZ-EF∙VGW/VGKW
MSZ-EF∙VGB/VGKB
MSZ-EF∙VGS/VGKS PARTS CATALOG (OBB831)
CONTENTS
1. TECHNICAL CHANGES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 3
2. PART NAMES AND FUNCTIONS∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4
3. SPECIFICATION∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 5
4. NOISE CRITERIA CURVES∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 7
5. OUTLINES AND DIMENSIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 9
6. WIRING DIAGRAM∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 10
7. REFRIGERANT SYSTEM DIAGRAM∙∙∙∙∙∙∙∙∙∙∙∙∙ 15
8. SERVICE FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 16
9. MICROPROCESSOR CONTROL ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 19
10. TROUBLESHOOTING∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 27
11. DISASSEMBLY INSTRUCTIONS∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 44
SERVICE MANUAL
Outdoor unit service manual
MUZ-EF∙VG/H Series (OBH832)
MXZ-F∙VF Series(OBH790)
OBH831 is void.
Revision A:
• MSZ-EF18/22/25/35/42/50VGW/B/S - E2 ,
MSZ-EF22/25/35/42/50VGW/B/S - ET2 ,
MSZ-EF18/22/25/35/42/50VGKW/B/S - E1 and
MSZ-EF22/25/35/42/50VGKW/B/S - ET1
have been added.

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 speci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:
• MSZ-EF18/22/25/35/42/50VGW/B/S - E2 , MSZ-EF22/25/35/42/50VGW/B/S - ET2 ,
MSZ-EF18/22/25/35/42/50VGKW/B/S - E1 and MSZ-EF22/25/35/42/50VGKW/B/S - ET1 have been added.
OBH831A

3
TECHNICAL CHANGES
1
The following models are compatible with the outdoor units with low standby power control.
Connecting the following models to the MUZ-EF∙VG/H series outdoor units enables the low standby power control.
The following models may be connected to the MUZ-EF∙VG/H series after once connected to the MXZ series and operated,
for example because of relocation. In that case, the MUZ-EF∙VG/H series outdoor units will not operate without taking a step.
Follow the procedure "Deleting the memorized abnormal condition" described in 10-2.1.
MSZ-EF18VGW/B/S - E1 MSZ-EF18VGW/B/S - E2
MSZ-EF22VGW/B/S - E1 ,- ET1 MSZ-EF22VGW/B/S - E2 ,- ET2
MSZ-EF25VGW/B/S - E1 ,- ET1 MSZ-EF25VGW/B/S - E2 ,- ET2
MSZ-EF35VGW/B/S - E1 ,- ET1 MSZ-EF35VGW/B/S - E2 ,- ET2
MSZ-EF42VGW/B/S - E1 ,- ET1 MSZ-EF42VGW/B/S - E2 ,- ET2
MSZ-EF50VGW/B/S - E1 ,- ET1 MSZ-EF50VGW/B/S - E2 ,- ET2
1. Indoor electronic control P.C. board has been changed.
MSZ-EF18VGW/B/S - E1
MSZ-EF22VGW/B/S - E1 ,- ET1
MSZ-EF25VGW/B/S - E1 ,- ET1
MSZ-EF35VGW/B/S - E1 ,- ET1
MSZ-EF42VGW/B/S - E1 ,- ET1
MSZ-EF50VGW/B/S - E1 ,- ET1
MSZ-EF18VGKW/B/S - E1
MSZ-EF22VGKW/B/S - E1 ,- ET1
MSZ-EF25VGKW/B/S - E1 ,- ET1
MSZ-EF35VGKW/B/S - E1 ,- ET1
MSZ-EF42VGKW/B/S - E1 ,- ET1
MSZ-EF50VGKW/B/S - E1 ,- ET1
1. New model
OBH831A

4
PART NAMES AND FUNCTIONS
2
ACCESSORIES
MSZ-EF18VGW MSZ-EF22VGW MSZ-EF25VGW MSZ-EF35VGW MSZ-EF42VGW MSZ-EF50VGW
MSZ-EF18VGB MSZ-EF22VGB MSZ-EF25VGB MSZ-EF35VGB MSZ-EF42VGB MSZ-EF50VGB
MSZ-EF18VGS MSZ-EF22VGS MSZ-EF25VGS MSZ-EF35VGS MSZ-EF42VGS MSZ-EF50VGS
Operation
indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air filter
(Air purifying filter)
Air cleaning filter
(Silver-ionized air purifier
filter)
Heat exchanger
Front panel
Air outlet
Wi-Fi interface
(Only for MSZ-EF·VGKW/B/S)
MSZ-EF18VGKW MSZ-EF22VGKW MSZ-EF25VGKW MSZ-EF35VGKW MSZ-EF42VGKW MSZ-EF50VGKW
MSZ-EF18VGKB MSZ-EF22VGKB MSZ-EF25VGKB MSZ-EF35VGKB MSZ-EF42VGKB MSZ-EF50VGKB
MSZ-EF18VGKS MSZ-EF22VGKS MSZ-EF25VGKS MSZ-EF35VGKS MSZ-EF42VGKS MSZ-EF50VGKS
Remote controller
Model
MSZ-EF18VGW MSZ-EF18VGB MSZ-EF18VGS
MSZ-EF22VGW MSZ-EF22VGB MSZ-EF22VGS
MSZ-EF25VGW MSZ-EF25VGB MSZ-EF25VGS
MSZ-EF35VGW MSZ-EF35VGB MSZ-EF35VGS
MSZ-EF42VGW MSZ-EF42VGB MSZ-EF42VGS
MSZ-EF50VGW MSZ-EF50VGB MSZ-EF50VGS
MSZ-EF18VGKW MSZ-EF18VGKB MSZ-EF18VGKS
MSZ-EF22VGKW MSZ-EF22VGKB MSZ-EF22VGKS
MSZ-EF25VGKW MSZ-EF25VGKB MSZ-EF25VGKS
MSZ-EF35VGKW MSZ-EF35VGKB MSZ-EF35VGKS
MSZ-EF42VGKW MSZ-EF42VGKB MSZ-EF42VGKS
MSZ-EF50VGKW MSZ-EF50VGKB MSZ-EF50VGKS
Installation plate 1
Installation plate xing screw 4 × 25 mm 5
Battery (AAA) for remote controller 2
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Soft dry cloth (VGB type only) 1
Air cleaning lter 2
OBH831A

5
Indoor model
MSZ-EF18VGW
MSZ-EF18VGB
MSZ-EF18VGS
MSZ-EF18VGKW
MSZ-EF18VGKB
MSZ-EF18VGKS
MSZ-EF22VGW
MSZ-EF22VGB
MSZ-EF22VGS
MSZ-EF22VGKW
MSZ-EF22VGKB
MSZ-EF22VGKS
MSZ-EF25VGW
MSZ-EF25VGB
MSZ-EF25VGS
MSZ-EF25VGKW
MSZ-EF25VGKB
MSZ-EF25VGKS
MSZ-EF35VGW
MSZ-EF35VGB
MSZ-EF35VGS
MSZ-EF35VGKW
MSZ-EF35VGKB
MSZ-EF35VGKS
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1Cooling W20
Heating 26 30
Running
current 1Cooling A0.20
Heating 0.26 0.29
Fan motor
Model RC0J40
Current 1Cooling A0.20
Heating 0.26 0.29
Dimensions W × H × D mm 885 × 299 × 195
Weight kg 11.5
Special remarks
Air direction 5
Airow
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 30
Low 23 24
Silent 19 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 W: SG19A
B,S: SG19B
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
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
OBH831A

6
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-EF42VGW
MSZ-EF42VGB
MSZ-EF42VGS
MSZ-EF42VGKW
MSZ-EF42VGKB
MSZ-EF42VGKS
MSZ-EF50VGW
MSZ-EF50VGB
MSZ-EF50VGS
MSZ-EF50VGKW
MSZ-EF50VGKB
MSZ-EF50VGKS
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input
1Cooling W23 23
Heating 33 43
Running
current 1Cooling A0.23 0.23
Heating 0.31 0.39
Fan motor
Model RC0J40
Current 1Cooling A0.23 0.23
Heating 0.31 0.39
Dimensions W × H × D mm 885 × 299 × 195
Weight kg 11.5
Special remarks
Air direction 5
Airow
Cooling
Super High
m3/h
672 678
High 534 552
Med. 462 474
Low 396 408
Silent 348
Heating
Super High
m3/h
792 876
High 594 666
Med. 468 540
Low 378 432
Silent 330 384
Sound level
Cooling
Super High
dB(A)
43 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
1,260 1,270
High 1,050 1,080
Med. 930 950
Low 830 850
Silent 750
Heating
Super High
rpm
1,440 1,570
High 1,140 1,250
Med. 940 1,060
Low 800 890
Silent 720 810
Fan speed regulator 5
Remote controller model W: SG19A
B,S: SG19B
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.
OBH831A

7
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
NOISE CRITERIA CURVES
4
MSZ-EF18VGW MSZ-EF22VGW MSZ-EF25VGW MSZ-EF18VGKW MSZ-EF22VGKW MSZ-EF25VGKW
MSZ-EF18VGB MSZ-EF22VGB MSZ-EF25VGB MSZ-EF18VGKB MSZ-EF22VGKB MSZ-EF25VGKB
MSZ-EF18VGS MSZ-EF22VGS MSZ-EF25VGS MSZ-EF18VGKS MSZ-EF22VGKS MSZ-EF25VGKS
MSZ-EF35VGW MSZ-EF35VGKW
MSZ-EF35VGB MSZ-EF35VGKB
MSZ-EF35VGS MSZ-EF35VGKS
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
OBH831A

8
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
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
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
48
NC-10
MSZ-EF42VGW MSZ-EF42VGKW
MSZ-EF42VGB MSZ-EF42VGKB
MSZ-EF42VGS MSZ-EF42VGKS
MSZ-EF50VGW MSZ-EF50VGKW
MSZ-EF50VGB MSZ-EF50VGKB
MSZ-EF50VGS MSZ-EF50VGKS
OBH831A

9
OUTLINES AND DIMENSIONS
5
MSZ-EF18VGW MSZ-EF22VGW MSZ-EF25VGW MSZ-EF35VGW MSZ-EF42VGW MSZ-EF50VGW
MSZ-EF18VGB MSZ-EF22VGB MSZ-EF25VGB MSZ-EF35VGB MSZ-EF42VGB MSZ-EF50VGB
MSZ-EF18VGS MSZ-EF22VGS MSZ-EF25VGS MSZ-EF35VGS MSZ-EF42VGS MSZ-EF50VGS
Unit: mm
MSZ-EF18VGKW MSZ-EF22VGKW MSZ-EF25VGKW MSZ-EF35VGKW MSZ-EF42VGKW MSZ-EF50VGKW
MSZ-EF18VGKB MSZ-EF22VGKB MSZ-EF25VGKB MSZ-EF35VGKB MSZ-EF42VGKB MSZ-EF50VGKB
MSZ-EF18VGKS MSZ-EF22VGKS MSZ-EF25VGKS MSZ-EF35VGKS MSZ-EF42VGKS MSZ-EF50VGKS
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)
Drain hose Insulation ø28 O.D Connected part ø16 O.D
OBH831A

10
WIRING DIAGRAM
6
MSZ-EF18VGW- E1 MSZ-EF22VGW-
E1 , ET1 MSZ-EF25VGW- E1 , ET1
MSZ-EF35VGW- E1 , ET1 MSZ-EF42VGW-
E1 , ET1 MSZ-EF50VGW- E1 , ET1
MSZ-EF18VGB- E1 MSZ-EF22VGB-
E1 , ET1 MSZ-EF25VGB- E1 , ET1
MSZ-EF35VGB- E1 , ET1 MSZ-EF42VGB-
E1 , ET1 MSZ-EF50VGB- E1 , ET1
MSZ-EF18VGS- E1 MSZ-EF22VGS-
E1 , ET1 MSZ-EF25VGS- E1 , ET1
MSZ-EF35VGS- E1 , ET1 MSZ-EF42VGS-
E1 , ET1 MSZ-EF50VGS- E1 , ET1
OBH831A