Mitsubishi Electric MSZ-LN18VG2W-E1 User manual

INDOOR UNIT
SERVICE MANUAL No. OBH766
REVISED EDITION-C
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 3
3. SPECIFICATION················································ 4
4. NOISE CRITERIA CURVE ································ 6
5. OUTLINES AND DIMENSIONS ························ 9
6. WIRING DIAGRAM·········································· 10
7. REFRIGERANT SYSTEM DIAGRAM ············· 13
8. SERVICE FUNCTIONS ··································· 14
9. MICROPROCESSOR CONTROL ··················· 16
10. TROUBLESHOOTING····································· 27
11. DISASSEMBLY INSTRUCTIONS···················· 43
PARTS CATALOG (OBB766)
Outdoor unit service manual
MUZ-LN•VG Series (OBH767)
MUZ-LN•VGHZ Series (OBH768)
MSZ-LN25VGW/V/B/R
MSZ-LN35VGW/V/B/R
MSZ-LN50VGW/V/B/R
MSZ-LN60VGW/V/B/R
OBH766 REVISED EDITION-B is void.
Revision C:
• MSZ-LN18VG2W/V/B/R- E1 ,EN1 ,ET1 ,
MSZ-LN25VG2W/V/B/R- E1 ,EN1 ,ET1 ,
MSZ-LN35VG2W/V/B/R- E1 ,EN1 ,ET1 ,
MSZ-LN50VG2W/V/B/R- E1 ,EN1 ,ET1
and MSZ-LN60VG2W/V/B/R- E1 ,ET1
have been added.
Models
MSZ-LN18VGW -E1 MSZ-LN50VGW -E1 , ER1
MSZ-LN18VGV -E1 MSZ-LN50VGV -E1 , ER1
MSZ-LN18VGB -E1 MSZ-LN50VGB -E1 , ER1
MSZ-LN18VGR -E1 MSZ-LN50VGR -E1 , ER1
MSZ-LN18VG2W -E1 , EN1 , ET1 MSZ-LN50VG2W -E1 , EN1 , ET1
MSZ-LN18VG2V -E1 , EN1 , ET1 MSZ-LN50VG2V -E1 , EN1 , ET1
MSZ-LN18VG2B -E1 , EN1 , ET1 MSZ-LN50VG2B -E1 , EN1 , ET1
MSZ-LN18VG2R -E1 , EN1 , ET1 MSZ-LN50VG2R -E1 , EN1 , ET1
MSZ-LN25VGW -E1 , ER1 MSZ-LN60VGW -E1 , ER1
MSZ-LN25VGV -E1 , ER1 MSZ-LN60VGV -E1 , ER1
MSZ-LN25VGB -E1 , ER1 MSZ-LN60VGB -E1 , ER1
MSZ-LN25VGR -E1 , ER1 MSZ-LN60VGR -E1 , ER1
MSZ-LN25VG2W -E1 , EN1 , ET1 MSZ-LN60VG2W -E1 , ET1
MSZ-LN25VG2V -E1 , EN1 , ET1 MSZ-LN60VG2V -E1 , ET1
MSZ-LN25VG2B -E1 , EN1 , ET1 MSZ-LN60VG2B -E1 , ET1
MSZ-LN25VG2R -E1 , EN1 , ET1 MSZ-LN60VG2R -E1 , ET1
MSZ-LN35VGW -E1 , ER1
MSZ-LN35VGV -E1 , ER1
MSZ-LN35VGB -E1 , ER1
MSZ-LN35VGR -E1 , ER1
MSZ-LN35VG2W -E1 , EN1 , ET1
MSZ-LN35VG2V -E1 , EN1 , ET1
MSZ-LN35VG2B -E1 , EN1 , ET1
MSZ-LN35VG2R -E1 , EN1 , ET1

2
MSZ-LN25VGW - E1 , ER1 MSZ-LN50VGW - E1 , ER1
MSZ-LN25VGV - E1 , ER1 MSZ-LN50VGV - E1 , ER1
MSZ-LN25VGB - E1 , ER1 MSZ-LN50VGB - E1 , ER1
MSZ-LN25VGR - E1 , ER1 MSZ-LN50VGR - E1 , ER1
MSZ-LN35VGW - E1 , ER1 MSZ-LN60VGW - E1 , ER1
MSZ-LN35VGV - E1 , ER1 MSZ-LN60VGV - E1 , ER1
MSZ-LN35VGB - E1 , ER1 MSZ-LN60VGB - E1 , ER1
MSZ-LN35VGR - E1 , ER1 MSZ-LN60VGR - E1 , ER1
1. New model
(Wi-Fi interface has been set as a standard part.)
MSZ-LN18VGW - E1 MSZ-LN25VG2W - EN1 , ET1 MSZ-LN50VG2W - EN1 , ET1
MSZ-LN18VGV - E1 MSZ-LN25VG2V - EN1 , ET1 MSZ-LN50VG2V - EN1 , ET1
MSZ-LN18VGB - E1 MSZ-LN25VG2B - EN1 , ET1 MSZ-LN50VG2B - EN1 , ET1
MSZ-LN18VGR - E1 MSZ-LN25VG2R - EN1 , ET1 MSZ-LN50VG2R - EN1 , ET1
MSZ-LN18VG2W - EN1 , ET1 MSZ-LN35VG2W - EN1 , ET1 MSZ-LN60VG2W - ET1
MSZ-LN18VG2V - EN1 , ET1 MSZ-LN35VG2V - EN1 , ET1 MSZ-LN60VG2V - ET1
MSZ-LN18VG2B - EN1 , ET1 MSZ-LN35VG2B - EN1 , ET1 MSZ-LN60VG2B - ET1
MSZ-LN18VG2R - EN1 , ET1 MSZ-LN35VG2R - EN1 , ET1 MSZ-LN60VG2R - ET1
1. New model
MSZ-LN18VGW - E1 MSZ-LN18VG2W - E1
MSZ-LN18VGV - E1 MSZ-LN18VG2V - E1
MSZ-LN18VGB - E1 MSZ-LN18VG2B - E1
MSZ-LN18VGR - E1 MSZ-LN18VG2R - E1
MSZ-LN25VGW - E1 MSZ-LN25VG2W - E1
MSZ-LN25VGV - E1 MSZ-LN25VG2V - E1
MSZ-LN25VGB - E1 MSZ-LN25VG2B - E1
MSZ-LN25VGR - E1 MSZ-LN25VG2R - E1
MSZ-LN35VGW - E1 MSZ-LN35VG2W - E1
MSZ-LN35VGV - E1 MSZ-LN35VG2V - E1
MSZ-LN35VGB - E1 MSZ-LN35VG2B - E1
MSZ-LN35VGR - E1 MSZ-LN35VG2R - E1
1. Heat exchanger has been changed.
2. Refrigerant amount has been changed.
3. Remote controller has been changed.
MSZ-LN50VGW - E1 MSZ-LN50VG2W - E1
MSZ-LN50VGV - E1 MSZ-LN50VG2V - E1
MSZ-LN50VGB - E1 MSZ-LN50VG2B - E1
MSZ-LN50VGR - E1 MSZ-LN50VG2R - E1
MSZ-LN60VGW - E1 MSZ-LN60VG2W - E1
MSZ-LN60VGV - E1 MSZ-LN60VG2V - E1
MSZ-LN60VGB - E1 MSZ-LN60VG2B - E1
MSZ-LN60VGR - E1 MSZ-LN60VG2R - E1
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.
TECHNICAL CHANGES
1
These models are compatible with the outdoor units with low standby power control.
Connecting these models to the MUZ-LN·VG-series outdoor units enables the low standby power control. Refer to the techni-
cal guide about the low standby power control.
These models may be connected to the MUZ-LN·VG series after once connected to the MXZ series and operated, for exam-
ple because of relocation. In that case, the MUZ-LN·VG series outdoor units will not operate without taking a step. Follow the
procedure "Deleting the memorized abnormal condition" described in 10-2.1.
Revision A:
• For Wi-Fi interface, 10. TROUBLE SHOOTING has been modified.
Revision B:
• MSZ-LN18VGW/V/B/R- E1 have been added.
Revision C:
• MSZ-LN18VG2W/V/B/R- E1 ,EN1 ,ET1 , MSZ-LN25VG2W/V/B/R- E1 ,EN1 ,ET1 , MSZ-LN35VG2W/V/B/R- E1 ,EN1 ,ET1 ,
MSZ-LN50VG2W/V/B/R- E1 ,EN1 ,ET1 and MSZ-LN60VG2W/V/B/R- E1 ,ET1 have been added.
OBH766C

3
ACCESSORIES
PART NAMES AND FUNCTIONS
2
Operation indicator lamp
Remote control
receiving section
Emergency operation
switch
Horizontal
vane
Air inlet
Air filter
Air cleaning filter
(Deodorizing filter, black)
(Silverionized air purifier
filter, blue, option)
Front panel
Air outlet
Air purifying
device
i-see sensor
(Air purifying)
(Power)
Spec name plate
Wi-Fi interface
Remote controller
Model
All models
Installation plate 1
Installation plate xing screw
4 × 25 mm 5
Wireless remote controller 1
Felt tape
(For left or left-rear piping) 1
Corner box R 4
Corner box L 4
Battery (AAA) for remote controller 2
Air cleaning lter
(Deodorizing lter, black) 1
Air purifying device 1
MSZ-LN18VGW MSZ-LN25VGW MSZ-LN35VGW MSZ-LN50VGW MSZ-LN60VGW
MSZ-LN18VGV MSZ-LN25VGV MSZ-LN35VGV MSZ-LN50VGV MSZ-LN60VGV
MSZ-LN18VGB MSZ-LN25VGB MSZ-LN35VGB MSZ-LN50VGB MSZ-LN60VGB
MSZ-LN18VGR MSZ-LN25VGR MSZ-LN35VGR MSZ-LN50VGR MSZ-LN60VGR
MSZ-LN18VG2W MSZ-LN25VG2W MSZ-LN35VG2W MSZ-LN50VG2W MSZ-LN60VG2W
MSZ-LN18VG2V MSZ-LN25VG2V MSZ-LN35VG2V MSZ-LN50VG2V MSZ-LN60VG2V
MSZ-LN18VG2B MSZ-LN25VG2B MSZ-LN35VG2B MSZ-LN50VG2B MSZ-LN60VG2B
MSZ-LN18VG2R MSZ-LN25VG2R MSZ-LN35VG2R MSZ-LN50VG2R MSZ-LN60VG2R
OBH766C

4
Indoor model
MSZ-LN18VGW
MSZ-LN18VGV
MSZ-LN18VGB
MSZ-LN18VGR
MSZ-LN25VGW
MSZ-LN25VGV
MSZ-LN25VGB
MSZ-LN25VGR
MSZ-LN35VGW
MSZ-LN35VGV
MSZ-LN35VGB
MSZ-LN35VGR
MSZ-LN50VGW
MSZ-LN50VGV
MSZ-LN50VGB
MSZ-LN50VGR
MSZ-LN60VGW
MSZ-LN60VGV
MSZ-LN60VGB
MSZ-LN60VGR
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input *1 Cooling W20 24 29 40
Heating 29 34 40
Running current
*1
Cooling A0.21 0.23 0.28 0.37
Heating 0.28 0.33 0.37
Fan motor
Model RC0J30-ME
Current *1 Cooling A0.21 0.23 0.28 0.37
Heating 0.28 0.33 0.37
Dimensions W × H × D mm 890 × 307 × 233
Weight kg 15.5
Special remarks
Air direction 5
Airow
Cooling
Super High
m3/h
714 768 834 942
High 528 636 762
Med. 426 528 636
Low 348 450 528
Silent 258 342 426
Heating
Super High
m3/h
864 822 942 942
High 510 642 816
Med. 426 510 690
Low 342 384 564
Silent 240 258 324 390
Sound level
Cooling
Super High
dB(A)
42 43 46 49
High 36 39 45
Med. 29 35 41
Low 23 24 31 37
Silent 19 27 29
Heating
Super High
dB(A)
45 47 49
High 36 39 45
Med. 29 34 41
Low 24 29 37
Silent 19 25 29
Fan speed
Cooling
Super High
rpm
1,030 1,090 1,160 1,280
High 820 940 1,080
Med. 700 820 940
Low 610 730 820
Silent 500 600 700
Heating
Super High
rpm
1,190 1,150 1,280 1,280
High 800 950 1,140
Med. 700 800 1,000
Low 600 650 860
Silent 480 500 580 660
Fan speed regulator 5
Remote controller model W: SG16L V: XG16A B: XG16C R: XG16B
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 rating conditions of main electric parts
Fuse (F11) T3.15AL250 V
Horizontal vane motor (MV1) 12 V DC
Vertical vane motor (MV2) 12 V DC
i-see SENSOR MOTOR (MT) 12 V DC
Varistor (NR11) 470 V
Terminal block (TB) 3P
OBH766C

5
Indoor model
MSZ-LN18VG2W
MSZ-LN18VG2V
MSZ-LN18VG2B
MSZ-LN18VG2R
MSZ-LN25VG2W
MSZ-LN25VG2V
MSZ-LN25VG2B
MSZ-LN25VG2R
MSZ-LN35VG2W
MSZ-LN35VG2V
MSZ-LN35VG2B
MSZ-LN35VG2R
MSZ-LN50VG2W
MSZ-LN50VG2V
MSZ-LN50VG2B
MSZ-LN50VG2R
MSZ-LN60VG2W
MSZ-LN60VG2V
MSZ-LN60VG2B
MSZ-LN60VG2R
Power supply Single phase 230 V, 50 Hz
Electrical data
Power input *1 Cooling W20 23 29 40
Heating 27 34 40
Running current
*1
Cooling A0.21 0.23 0.28 0.37
Heating 0.26 0.33 0.37
Fan motor
Model RC0J40-SB RC0J30-ME
Current *1 Cooling A0.21 0.23 0.28 0.37
Heating 0.26 0.33 0.37
Dimensions W × H × D mm 890 × 307 × 233
Weight kg W: 14.5
V, B, R: 15.5
W: 15
V, B, R: 16
Special remarks
Air direction 5
Airow
Cooling
Super High
m3/h
744 780 834 942
High 552 636 762
Med. 426 528 636
Low 354 450 528
Silent 282 342 426
Heating
Super High
m3/h
834 942 942
High 660 642 816
Med. 450 510 690
Low 396 384 564
Silent 270 324 390
Sound level
Cooling
Super High
dB(A)
42 43 46 49
High 36 39 45
Med. 29 35 41
Low 23 24 31 37
Silent 19 27 29
Heating
Super High
dB(A)
45 47 49
High 38 39 45
Med. 29 34 41
Low 24 29 37
Silent 19 25 29
Fan speed
Cooling
Super High
rpm
1,040 1,080 1,160 1,280
High 820 940 1,080
Med. 670 820 940
Low 580 730 820
Silent 500 600 700
Heating
Super High
rpm
1,140 1,280 1,280
High 940 950 1,140
Med. 700 800 1,000
Low 630 650 860
Silent 480 580 660
Fan speed regulator 5
Indoor model
MSZ-LN18/25/35/50/60VG2
W V B R
Remote controller model -E, ET SG19N XG19D XG19F XG19E
-EN SG19L XG19A XG19C XG19B
Specifications and rating conditions of main electric parts
Fuse (F11) T3.15AL250 V
Horizontal vane motor (MV1) 12 V DC
Vertical vane motor (MV2) 12 V DC
i-see SENSOR MOTOR (MT) 12 V DC
Varistor (NR11) 470 V
Terminal block (TB) 3P
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.
OBH766C