Mitsubishi Electric MSZ-AP25VG-EN1 User manual

SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB788)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
No. OBH788
Outdoor unit service manual
MUZ-AP·VG(H) Series (OBH789)
MXZ-D·VA(H) Series (OBH626)
MXZ-E·VA(H) Series (OBH723)
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 3
3. SPECIFICATION················································ 4
4. NOISE CRITERIA CURVES······························ 5
5. OUTLINES AND DIMENSIONS ························ 6
6. WIRING DIAGRAM············································ 7
7. REFRIGERANT SYSTEM DIAGRAM··············· 9
8. SERVICE FUNCTIONS ··································· 10
9. MICROPROCESSOR CONTROL ··················· 12
10. TROUBLESHOOTING····································· 19
11. DISASSEMBLY INSTRUCTIONS···················· 33
Models
MSZ-AP25VG -E1 , EN1
MSZ-AP35VG -E1 , EN1
MSZ-AP42VG -E1 , EN1
MSZ-AP50VG -E1 , EN1
MSZ-AP25VGK -E1 , EN1
MSZ-AP35VGK -E1 , EN1
MSZ-AP42VGK -E1 , EN1
MSZ-AP50VGK -E1 , EN1

2
1
<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.
MSZ-AP25VG
-E1 , EN1
MSZ-AP35VG
-E1 , EN1
MSZ-AP42VG
-E1 , EN1
MSZ-AP50VG
-E1 , EN1
MSZ-AP25VGK
-E1 , EN1
MSZ-AP35VGK
-E1 , EN1
MSZ-AP42VGK
-E1 , EN1
MSZ-AP50VGK
-E1 , EN1
1. New model
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.
TECHNICAL CHANGES
These models are compatible with the outdoor units with low standby power control.
Connecting these models to the MUZ-AP·VG(H) series outdoor units enables the low standby power control.
These models may be connected to the MUZ-AP·VG(H) series after once connected to the MXZ series and operated, for
example because of relocation. In that case, the MUZ-AP·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.
OBH788

3
ACCESSORIES
MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG
MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK
Model MSZ-AP25VG MSZ-AP35VG MSZ-AP42VG MSZ-AP50VG
MSZ-AP25VGK MSZ-AP35VGK MSZ-AP42VGK MSZ-AP50VGK
Installation plate 1
Installation plate fixing screw 4 × 25 mm 5
Wireless remote controller 1
Felt tape (For left or left-rear piping) 1
Battery (AAA) for remote controller 2
Operation indicator lamp
Remote control receiving
section
Air inlet
Front panel
Air outlet
Spec name plate
Air ¿lter
(Air purifying ¿lter)
Air cleaning ¿lter
(Silver-ionized air
puri¿er ¿lter, option) Horizontal vane Emergency
operation switch
Wi-Fi interface
MSZ-AP·VGK
Remote controller
PART NAMES AND FUNCTIONS
2
OBH788

4
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-AP25VG
MSZ-AP25VGK MSZ-AP35VG MSZ-AP35VGK MSZ-AP42VG MSZ-AP42VGK MSZ-AP50VG MSZ-AP50VGK
Power supply Single phase 230 V, 50 Hz
Electrical data
Power
input 1Cooling W19 24
Heating 26 32
Running
current 1Cooling A0.18 0.24
Heating 0.26 0.32
Fan motor
Model RC0J30CV
Current 1Cooling A0.18 0.24
Heating 0.26 0.32
Dimensions W × H × D mm 798 × 299 × 219
Weight kg 10.5
Special remarks
Air direction 5
Airflow
Cooling
Super High
m3/h
684 756
High 522 558 600
Med. 426 462 504
Low 354 390 432
Silent 294 324 360
Heating
Super High
m3/h
774 840
High 534 564 600
Med. 438 462 492
Low 354 366 390
Silent 294 318 336
Sound level
Cooling
Super High
dB(A)
42 44
High 36 38 40
Med. 30 34 36
Low 24 29 33
Silent 19 21 28
Heating
Super High
dB(A)
45 48
High 39 38 40 43
Med. 34 31 35 38
Low 24 29 33
Silent 19 21 28
Fan speed
Cooling
Super High
rpm
970 1,050
High 790 830 880
Med. 670 720 770
Low 580 630 680
Silent 500 540 590
Heating
Super High
rpm
1,070 1,140
High 800 840 880
Med. 690 720 750
Low 580 600 630
Silent 500 530 560
Fan speed regulator 5
Remote controller model SG17B
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 Wet-bulb temperature 24°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.
SPECIFICATION
3
OBH788

5
MSZ-AP25VG
MSZ-AP25VGK
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
MSZ-AP35VG
MSZ-AP35VGK
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-AP42VG
MSZ-AP42VGK
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
44
48
NC-10
MSZ-AP50VG
MSZ-AP50VGK
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
OBH788