Mitsubishi Electric MSZ-SF25VE-E1 User manual

Models
MSZ-SF25VE -E1 , E2 , EN1 , EN2 , ER2
MSZ-SF35VE -E1 , E2 , EN1 , EN2 , ER2
MSZ-SF42VE -E1 , E2 , EN1 , EN2 , ER2
MSZ-SF50VE -E1 , E2 , EN1 , EN2 , ER2
MSZ-SF25VE2 -E1 , EN1 , ER1
MSZ-SF35VE2 -E1 , EN1 , ER1
MSZ-SF42VE2 -E1 , EN1 , ER1
MSZ-SF50VE2 -E1 , EN1 , ER1
MSZ-SF25VE3 -E1 , EN1 , ER1
MSZ-SF35VE3 -E1 , EN1 , ER1
MSZ-SF42VE3 -E1 , EN1 , ER1
MSZ-SF50VE3 -E1 , EN1 , ER1
SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB600)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision E:
• MSZ-SF25/35/42/50VE3- E1 , EN1, ER1 have
been added.
Please void OBH600 REVISED EDITION-D.
Revision E:
• MSZ-SF25/35/42/50VE3- E1 , EN1, ER1 have
been added.
Please void OBH600 REVISED EDITION-D.
No. OBH600
REVISED EDITION-E
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS····················· 5
3. SPECIFICATION················································ 7
4. NOISE CRITERIA CURVES···························· 10
5. OUTLINES AND DIMENSIONS ·······················11
6. WIRING DIAGRAM·········································· 12
7. REFRIGERANT SYSTEM DIAGRAM············· 16
8. SERVICE FUNCTIONS ··································· 17
9. MICROPROCESSOR CONTROL ··················· 19
10. TROUBLESHOOTING····································· 27
11. DISASSEMBLY INSTRUCTIONS···················· 40
Outdoor unit service manual
MUZ-SF·VE(H) Series (OBH629)
MXZ-C·VA Series (OB584)
MXZ-D·VA Series (OBH626)
MXZ-8B Series (OCH480)
MXZ-E·VA Series (OBH723)

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:
• MSZ-SF25/35/42/50VE- E2 and MSZ-SF25/35/42/50VE- EN2 have been added.
Revision B:
• "How to check miswiring and serial signal error" for MUZ type has been added.
• The description about "Low standby power control" has been added to "TECHNICAL CHANGES".
Revision C:
• MSZ-SF25/35/42/50VE- ER2 have been added.
Revision D:
• MSZ-SF25/35/42/50VE2- E1 , EN1, ER1 have been added.
Revision E:
• MSZ-SF25/35/42/50VE3- E1 , EN1, ER1 have been added.
OBH600E

3
TECHNICAL CHANGES
1
MSZ-SF25VE- E1 MSZ-SF25VE-EN1
MSZ-SF35VE- E1 MSZ-SF35VE-EN1
MSZ-SF42VE- E1 MSZ-SF42VE-EN1
MSZ-SF50VE- E1 MSZ-SF50VE-EN1
1. New model
MSZ-SF25VE- E1 MSZ-SF25VE- E2 MSZ-SF25VE-EN1 MSZ-SF25VE-EN2
MSZ-SF35VE- E1 MSZ-SF35VE- E2 MSZ-SF35VE-EN1 MSZ-SF35VE-EN2
MSZ-SF42VE- E1 MSZ-SF42VE- E2 MSZ-SF42VE-EN1 MSZ-SF42VE-EN2
MSZ-SF50VE- E1 MSZ-SF50VE- E2 MSZ-SF50VE-EN1 MSZ-SF50VE-EN2
1. Indoor electronic control P.C. board has been changed.
E2 and EN2 models are compatible with the outdoor units with low standby power control.
Connecting these models to the MUZ-SF·VE(H)-series outdoor units enables the low standby power control. Refer to the tech-
nical guide (OBT17) about the low standby power control.
These models may be connected to the MUZ-SF·VE(H) series after once connected to the MXZ series and operated, for
example because of relocation. In that case, the MUZ-SF·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.
MSZ-SF25VE-ER2
MSZ-SF35VE-ER2
MSZ-SF42VE-ER2
MSZ-SF50VE-ER2
1. New model
MSZ-SF25VE2- E1
MSZ-SF35VE2- E1
MSZ-SF42VE2- E1
MSZ-SF50VE2- E1
1. New model
MSZ-SF25VE2-EN1
MSZ-SF35VE2-EN1
MSZ-SF42VE2-EN1
MSZ-SF50VE2-EN1
1. New model
MSZ-SF25VE2-ER1
MSZ-SF35VE2-ER1
MSZ-SF42VE2-ER1
MSZ-SF50VE2-ER1
1. New model
OBH600E

4
MSZ-SF25VE3- E1
MSZ-SF35VE3- E1
MSZ-SF42VE3- E1
MSZ-SF50VE3- E1
1. New model
MSZ-SF25VE3-EN1
MSZ-SF35VE3-EN1
MSZ-SF42VE3-EN1
MSZ-SF50VE3-EN1
1. New model
MSZ-SF25VE3-ER1
MSZ-SF35VE3-ER1
MSZ-SF42VE3-ER1
MSZ-SF50VE3-ER1
1. New model
OBH600E

5
ACCESSORIES
MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE
MSZ-SF25VE2 MSZ-SF35VE2 MSZ-SF42VE2 MSZ-SF50VE2
PART NAMES AND FUNCTIONS
2
Model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE
MSZ-SF25VE2 MSZ-SF35VE2 MSZ-SF42VE2 MSZ-SF50VE2
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
Operation
indicator lamp
Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air ¿lter
(Nano platinum ¿lter)
Air cleaning ¿lter
(Electrostatic anti-allergy
enzyme ¿lter, option)
Heat exchanger
Front panel
Air outlet
Remote controller
OBH600E

6
ACCESSORIES
MSZ-SF25VE3 MSZ-SF35VE3 MSZ-SF42VE3 MSZ-SF50VE3
Model MSZ-SF25VE3 MSZ-SF35VE3 MSZ-SF42VE3 MSZ-SF50VE3
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
Operation
indicator lamp Remote control
receiving section
Emergency
operation switch
Horizontal vane
Air inlet
Air ¿lter
(Air purifying ¿lter)
Air cleaning ¿lter
(Silver-ionized air
puri¿er ¿lter, option)
Front panel
Air outlet
Heat exchanger
Spec name plate
Remote controller
OBH600E

7
Indoor model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE
Power supply Single phase 230 V, 50 Hz
Electrical data
Power
input 1Cooling W18 22
Heating 24 27 35
Running
current 1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Fan motor
Model RC0J21-AA
Current
1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Dimensions W × H × D mm 798 × 299 × 195
Weight kg 10
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
546 594
High 432 474 492
Med. 336 402 420
Low 246 348 372
Silent 210 300 336
Heating
Super High
m3/h
618 660 720
High 492 498 546 588
Med. 402 432 480
Low 246 348 384
Silent 210 300 336
Sound level
Cooling
Super High
dB(A)
42 45
High 36 38 40
Med. 30 34 36
Low 24 31 33
Silent 21 28 30
Heating
Super High
dB(A)
45 46 47 49
High 39 40 42 43
Med. 34 36 38
Low 24 31 33
Silent 21 28 30
Fan speed
Cooling
Super High
rpm
1,200 1,280
High 1,000 1,070 1,100
Med. 820 940 970
Low 660 850 880
Silent 590 760 820
Heating
Super High
rpm
1,330 1,400 1,500
High 1,100 1,120 1,200 1,270
Med. 940 1,000 1,080
Low 660 850 910
Silent 590 760 820
Fan speed regulator 5
Remote controller model SG11D
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 Wet-bulb temperature 15°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 VDC
Varistor (NR11) S10K300E2K1 (ERZV10D471)
Terminal block (TB) 3P
OBH600E

8
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-SF25VE2 MSZ-SF35VE2 MSZ-SF42VE2 MSZ-SF50VE2
Power supply Single phase 230 V, 50 Hz
Electrical data
Power
input 1Cooling W18 22
Heating 24 27 35
Running
current 1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Fan motor
Model RC0J21-AA
Current 1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Dimensions W × H × D mm 798 × 299 × 195
Weight kg 10
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
546 594
High 432 474 492
Med. 336 402 420
Low 246 348 372
Silent 192 (210 2) 282 (300 2) 306 (336 2)
Heating
Super High
m3/h
618 660 684 720
High 492 498 546 588
Med. 402 432 480
Low 246 348 384
Silent 180 (210 2) 282 (300 2) 306 (336 2)
Sound level
Cooling
Super High
dB(A)
42 45
High 36 38 40
Med. 30 34 36
Low 24 31 33
Silent 19 (21 2) 26 (28 2) 28 (30 2)
Heating
Super High
dB(A)
45 46 47 49
High 39 40 42 43
Med. 34 36 38
Low 24 31 33
Silent 19 (21 2) 26 (28 2) 28 (30 2)
Fan speed
Cooling
Super High
rpm
1,200 1,280
High 1,000 1,070 1,100
Med. 820 940 970
Low 660 850 880
Silent 550 (590 2) 720 (760 2) 770 (820 2)
Heating
Super High
rpm
1,330 1,400 1,500
High 1,100 1,120 1,200 1,270
Med. 940 1,000 1,080
Low 660 850 910
Silent 530 (590 2) 720 (760 2) 770 (820 2)
Fan speed regulator 5
Remote controller model SG14D
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 Wet-bulb temperature 15°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
1 Measured under rated operating frequency.
2 For multi system.
OBH600E

9
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-SF25VE3 MSZ-SF35VE3 MSZ-SF42VE3 MSZ-SF50VE3
Power supply Single phase 230 V, 50 Hz
Electrical data
Power
input 1Cooling W18 22
Heating 24 27 35
Running
current 1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Fan motor
Model RC0J21-AA
Current 1Cooling A0.16 0.18
Heating 0.20 0.22 0.27
Dimensions W × H × D mm 798 × 299 × 195
Weight kg 10
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
546 594
High 432 474 492
Med. 336 402 420
Low 246 348 372
Silent 192 (210 2) 282 (300 2) 306 (336 2)
Heating
Super High
m3/h
618 660 684 720
High 492 498 546 588
Med. 402 432 480
Low 246 348 384
Silent 180 (210 2) 282 (300 2) 306 (336 2)
Sound level
Cooling
Super High
dB(A)
42 45
High 36 38 40
Med. 30 34 36
Low 24 31 33
Silent 19 (21 2) 26 (28 2) 28 (30 2)
Heating
Super High
dB(A)
45 46 47 49
High 39 40 42 43
Med. 34 36 38
Low 24 31 33
Silent 19 (21 2) 26 (28 2) 28 (30 2)
Fan speed
Cooling
Super High
rpm
1,200 1,280
High 1,000 1,070 1,100
Med. 820 940 970
Low 660 850 880
Silent 550 (590 2) 720 (760 2) 770 (820 2)
Heating
Super High
rpm
1,330 1,400 1,500
High 1,100 1,120 1,200 1,270
Med. 940 1,000 1,080
Low 660 850 910
Silent 530 (590 2) 720 (760 2) 770 (820 2)
Fan speed regulator 5
Remote controller model SG15D
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 Wet-bulb temperature 15°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
1 Measured under rated operating frequency.
2 For multi system.
OBH600E

10
MSZ-SF25VE
MSZ-SF25VE2
MSZ-SF25VE3
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-SF35VE
MSZ-SF35VE2
MSZ-SF35VE3
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
Test conditions
Cooling: Dry-bulb temperature 27°C
Wet-bulb temperature 19°C
Heating: Dry-bulb temperature 20°C
Wet-bulb temperature 15°C
INDOOR UNIT WALL
MICROPHONE
0.8m
1m
MSZ-SF42VE
MSZ-SF42VE2
MSZ-SF42VE3
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
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
45
49
NC-10
MSZ-SF50VE
MSZ-SF50VE2
MSZ-SF50VE3
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
47
NC-10
OBH600E