Mitsubishi Electric MSZ-LN18VG2V-E3 User manual

INDOOR UNIT
SERVICE MANUAL No. OBH766
REVISED EDITION-G
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················5
3. SPECIFICATION ········································6
4. NOISE CRITERIA CURVE····························8
5. OUTLINES AND DIMENSIONS··················· 11
6. WIRING DIAGRAM···································13
7. REFRIGERANT SYSTEM DIAGRAM ···········18
8. SERVICE FUNCTIONS······························19
9. MICROPROCESSOR CONTROL·················26
10. TROUBLESHOOTING·······························37
11. DISASSEMBLY INSTRUCTIONS·················55
PARTS CATALOG (OBB766)
MSZ-LN25VGW/V/B/R
MSZ-LN35VGW/V/B/R
MSZ-LN50VGW/V/B/R
MSZ-LN60VGW/V/B/R
OBH766 REVISED EDITION-F is void.
Outdoor unit service manual
MUZ-LN•VG Series (OBH767)
MUZ-LN•VGHZ Series (OBH768)
Revision G:
• MSZ-LN18VG2W- SC1, ET2 , ER2, E3 ,
MSZ-LN18VG2V/B/R- E3 ,
MSZ-LN25/35/50VG2W/V/B/R- SC1 , E3 , ET3 , ER3
and MSZ-LN60VG2W/V/B/R- E3 , ET3 , ER3
have been added.
Models
MSZ-LN18VGW/V/B/R -E1
MSZ-LN18VG2W -E1 , ER1 , EN1 , ET1 , SC1 , E2 , ET2 , ER2 , E3
MSZ-LN18VG2V/B/R -E1 , EN1 , ET1 , E2 , E3
MSZ-LN25VGW/V/B/R -E1 , ER1
MSZ-LN25VG2W/V/B/R -E1 , ER1 , EN1 , ET1 , SC1 , E2 , ER2 , EN2 , ET2 , E3 , ET3 , ER3
MSZ-LN35VGW/V/B/R -E1 , ER1
MSZ-LN35VG2W/V/B/R -E1 , ER1 , EN1 , ET1 , SC1 , E2 , ER2 , EN2 , ET2 , E3 , ET3 , ER3
MSZ-LN50VGW/V/B/R -E1 , ER1
MSZ-LN50VG2W/V/B/R -E1 , ER1 , EN1 , ET1 , SC1 , E2 , ER2 , EN2 , ET2 , E3 , ET3 , ER3
MSZ-LN60VGW/V/B/R -E1 , ER1
MSZ-LN60VG2W/V/B/R -E1 , ER1 ,ET1 , E2 , ER2 , ET2 , E3 , ET3 , ER3

2
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.
Revision D:
• 10. TROUBLESHOOTING has been modified.
Revision E:
• MSZ-LN18VG2W- ER1 and MSZ-LN25/35/50/60VG2W/V/B/R- ER1 have been added.
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.
<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 pull 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.
Revision F:
• MSZ-LN18VG2W/V/B/R- E2 , MSZ-LN25/35/50VG2W/V/B/R- E2 , ER2, EN2 , ET2 and MSZ-LN60VG2W/V/B/R- E2 , ER2, ET2
have been added.
Revision G:
• MSZ-LN18VG2W- SC1, ET2 , ER2, E3 , MSZ-LN18VG2V/B/R- E3 , MSZ-LN25/35/50VG2W/V/B/R- SC1, E3 , ET3 , ER3
and MSZ-LN60VG2W/V/B/R- E3 , ET3 , ER3 have been added.
WARNING
• When the refrigeration circuit has a leak, do not execute pump down with the compressor.
• When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
The compressor may burst if air etc. get into it.
• When opening or closing the valve below freezing temperatures, refrigerant may spurt out from the gap
between the valve stem and the valve body, resulting in injuries.
OBH766G

3
TECHNICAL CHANGES1
MSZ-LN25VGW - E1 , ER1 MSZ-LN35VGW - E1 , ER1 MSZ-LN50VGW - E1 , ER1 MSZ-LN60VGW - E1 , ER1
MSZ-LN25VGV - E1 , ER1 MSZ-LN35VGV - E1 , ER1 MSZ-LN50VGV - E1 , ER1 MSZ-LN60VGV - E1 , ER1
MSZ-LN25VGB - E1 , ER1 MSZ-LN35VGB - E1 , ER1 MSZ-LN50VGB - E1 , ER1 MSZ-LN60VGB - E1 , ER1
MSZ-LN25VGR - E1 , ER1 MSZ-LN35VGR - E1 , ER1 MSZ-LN50VGR - 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 ,ER1 ,ET1 MSZ-LN50VG2W - EN1 ,ER1 ,ET1
MSZ-LN18VGV - E1 MSZ-LN25VG2V - EN1 ,ER1 ,ET1 MSZ-LN50VG2V - EN1 ,ER1 ,ET1
MSZ-LN18VGB - E1 MSZ-LN25VG2B - EN1 ,ER1 ,ET1 MSZ-LN50VG2B - EN1 ,ER1 ,ET1
MSZ-LN18VGR - E1 MSZ-LN25VG2R - EN1 ,ER1 ,ET1 MSZ-LN50VG2R - EN1 ,ER1 ,ET1
MSZ-LN18VG2W - EN1 ,ER1 ,ET1 MSZ-LN35VG2W - EN1 ,ER1 ,ET1 MSZ-LN60VG2W - ET1 ,ER1 ,ET1
MSZ-LN18VG2V - EN1 , ET1 MSZ-LN35VG2V - EN1 ,ER1 ,ET1 MSZ-LN60VG2V - ET1 ,ER1 ,ET1
MSZ-LN18VG2B - EN1 , ET1 MSZ-LN35VG2B - EN1 ,ER1 ,ET1 MSZ-LN60VG2B - ET1 ,ER1 ,ET1
MSZ-LN18VG2R - EN1 , ET1 MSZ-LN35VG2R - EN1 ,ER1 ,ET1 MSZ-LN60VG2R - ET1 ,ER1 ,ET1
1. New model
MSZ-LN18VGW - E1 MSZ-LN18VG2W - E1 MSZ-LN50VGW - E1 MSZ-LN50VG2W - E1
MSZ-LN18VGV - E1 MSZ-LN18VG2V - E1 MSZ-LN50VGV - E1 MSZ-LN50VG2V - E1
MSZ-LN18VGB - E1 MSZ-LN18VG2B - E1 MSZ-LN50VGB - E1 MSZ-LN50VG2B - E1
MSZ-LN18VGR - E1 MSZ-LN18VG2R - E1 MSZ-LN50VGR - E1 MSZ-LN50VG2R - E1
MSZ-LN25VGW - E1 MSZ-LN25VG2W - E1 MSZ-LN60VGW - E1 MSZ-LN60VG2W - E1
MSZ-LN25VGV - E1 MSZ-LN25VG2V - E1 MSZ-LN60VGV - E1 MSZ-LN60VG2V - E1
MSZ-LN25VGB - E1 MSZ-LN25VG2B - E1 MSZ-LN60VGB - E1 MSZ-LN60VG2B - E1
MSZ-LN25VGR - E1 MSZ-LN25VG2R - E1 MSZ-LN60VGR - E1 MSZ-LN60VG2R - 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-LN18VG2W - E1 MSZ-LN18VG2W - E2
MSZ-LN18VG2V - E1 MSZ-LN18VG2V - E2
MSZ-LN18VG2B - E1 MSZ-LN18VG2B - E2
MSZ-LN18VG2R - E1 MSZ-LN18VG2R - E2
MSZ-LN25VG2W - E1 ,ER1 ,EN1 ,ET1 MSZ-LN25VG2W - E2 ,ER2 ,EN2 ,ET2
MSZ-LN25VG2V - E1 ,ER1 ,EN1 ,ET1 MSZ-LN25VG2V - E2 ,ER2 ,EN2 ,ET2
MSZ-LN25VG2B - E1 ,ER1 ,EN1 ,ET1 MSZ-LN25VG2B - E2 ,ER2 ,EN2 ,ET2
MSZ-LN25VG2R - E1 ,ER1 ,EN1 ,ET1 MSZ-LN25VG2R - E2 ,ER2 ,EN2 ,ET2
MSZ-LN35VG2W - E1 ,ER1 ,EN1 ,ET1 MSZ-LN35VG2W - E2 ,ER2 ,EN2 ,ET2
MSZ-LN35VG2V - E1 ,ER1 ,EN1 ,ET1 MSZ-LN35VG2V - E2 ,ER2 ,EN2 ,ET2
MSZ-LN35VG2B - E1 ,ER1 ,EN1 ,ET1 MSZ-LN35VG2B - E2 ,ER2 ,EN2 ,ET2
MSZ-LN35VG2R - E1 ,ER1 ,EN1 ,ET1 MSZ-LN35VG2R - E2 ,ER2 ,EN2 ,ET2
MSZ-LN50VG2W - E1 ,ER1 ,EN1 ,ET1 MSZ-LN50VG2W - E2 ,ER2 ,EN2 ,ET2
MSZ-LN50VG2V - E1 ,ER1 ,EN1 ,ET1 MSZ-LN50VG2V - E2 ,ER2 ,EN2 ,ET2
MSZ-LN50VG2B - E1 ,ER1 ,EN1 ,ET1 MSZ-LN50VG2B - E2 ,ER2 ,EN2 ,ET2
MSZ-LN50VG2R - E1 ,ER1 ,EN1 ,ET1 MSZ-LN50VG2R - E2 ,ER2 ,EN2 ,ET2
MSZ-LN60VG2W - E1 ,ER1 ,ET1 MSZ-LN60VG2W - E2 ,ER2 ,ET2
MSZ-LN60VG2V - E1 ,ER1 ,ET1 MSZ-LN60VG2V - E2 ,ER2 ,ET2
MSZ-LN60VG2B - E1 ,ER1 ,ET1 MSZ-LN60VG2B - E2 ,ER2 ,ET2
MSZ-LN60VG2R - E1 ,ER1 ,ET1 MSZ-LN60VG2R - E2 ,ER2 ,ET2
1. Wi-Fi interface has been changed.
2. Indoor electronic control P.C. baord has been changed.
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 technical
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 example
because of relocation. In that case, the MUZ-LN·VG series outdoor units will not operate without taking a step. Follow the proce-
dure "Deleting the memorized abnormal condition" described in 10-2.1.
OBH766G

4
MSZ-LN18VG2W - ET1 ,E2 ,ER1 MSZ-LN18VG2W - ET2 ,E3 ,ER2
MSZ-LN18VG2V - E2 MSZ-LN18VG2V - E3
MSZ-LN18VG2B - E2 MSZ-LN18VG2B - E3
MSZ-LN18VG2R - E2 MSZ-LN18VG2R - E3
1. Indoor electronic control P.C. baord has been changed.
MSZ-LN25VG2W - E2 ,ET2 ,ER2 MSZ-LN25VG2W - E3 ,ET3 ,ER3
MSZ-LN25VG2V - E2 ,ET2 ,ER2 MSZ-LN25VG2V - E3 ,ET3 ,ER3
MSZ-LN25VG2B - E2 ,ET2 ,ER2 MSZ-LN25VG2B - E3 ,ET3 ,ER3
MSZ-LN25VG2R - E2 ,ET2 ,ER2 MSZ-LN25VG2R - E3 ,ET3 ,ER3
MSZ-LN35VG2W - E2 ,ET2 ,ER2 MSZ-LN35VG2W - E3 ,ET3 ,ER3
MSZ-LN35VG2V - E2 ,ET2 ,ER2 MSZ-LN35VG2V - E3 ,ET3 ,ER3
MSZ-LN35VG2B - E2 ,ET2 ,ER2 MSZ-LN35VG2B - E3 ,ET3 ,ER3
MSZ-LN35VG2R - E2 ,ET2 ,ER2 MSZ-LN35VG2R - E3 ,ET3 ,ER3
MSZ-LN50VG2W - E2 ,ET2 ,ER2 MSZ-LN50VG2W - E3 ,ET3 ,ER3
MSZ-LN50VG2V - E2 ,ET2 ,ER2 MSZ-LN50VG2V - E3 ,ET3 ,ER3
MSZ-LN50VG2B - E2 ,ET2 ,ER2 MSZ-LN50VG2B - E3 ,ET3 ,ER3
MSZ-LN50VG2R - E2 ,ET2 ,ER2 MSZ-LN50VG2R - E3 ,ET3 ,ER3
MSZ-LN60VG2W - E2 ,ET2 ,ER2 MSZ-LN60VG2W - E3 ,ET3 ,ER3
MSZ-LN60VG2V - E2 ,ET2 ,ER2 MSZ-LN60VG2V - E3 ,ET3 ,ER3
MSZ-LN60VG2B - E2 ,ET2 ,ER2 MSZ-LN60VG2B - E3 ,ET3 ,ER3
MSZ-LN60VG2R - E2 ,ET2 ,ER2 MSZ-LN60VG2R - E3 ,ET3 ,ER3
1. Indoor fan motor has been changed.
2. Indoor electronic control P.C. baord has been changed.
MSZ-LN18VG2W - SC1 MSZ-LN50VG2W - SC1
MSZ-LN25VG2W - SC1 MSZ-LN50VG2V - SC1
MSZ-LN25VG2V - SC1 MSZ-LN50VG2B - SC1
MSZ-LN25VG2B - SC1 MSZ-LN50VG2R - SC1
MSZ-LN25VG2R - SC1
MSZ-LN35VG2W - SC1
MSZ-LN35VG2V - SC1
MSZ-LN35VG2B - SC1
MSZ-LN35VG2R - SC1
1. New model
OBH766G

5
PART NAMES AND FUNCTIONS2
ACCESSORIES
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
OBH766G

6
SPECIFICATION3
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.
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
OBH766G

7
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(-E1 ,EN1 ,ET1 ,ER1
,E2 ,EN2 ,ET2 ,ER2 )
RC0J40-SB (-SC1 ,E3 ,ET3 ,ER3 )
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, ER, ET SG19N XG19D XG19F XG19E
-EN , SC 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.
OBH766G

8
NOISE CRITERIA CURVE4
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
45
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
NC-10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
45
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
NC-10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
45
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
NC-10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
42
45
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
NC-10
MSZ-LN18VGW MSZ-LN18VGB
MSZ-LN18VGV MSZ-LN18VGR
MSZ-LN25VGW MSZ-LN25VGB
MSZ-LN25VGV MSZ-LN25VGR
MSZ-LN18VG2W MSZ-LN18VG2B
MSZ-LN18VG2V MSZ-LN18VG2R
MSZ-LN25VG2W MSZ-LN25VG2B
MSZ-LN25VG2V MSZ-LN25VG2R
OBH766G

9
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
43
45
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
NC-10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
46
47
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
NC-10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
43
45
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
NC-10
MSZ-LN35VGW MSZ-LN35VGB
MSZ-LN35VGV MSZ-LN35VGR
MSZ-LN50VGW MSZ-LN50VGB
MSZ-LN50VGV MSZ-LN50VGR
MSZ-LN50VG2W MSZ-LN50VG2B
MSZ-LN50VG2V MSZ-LN50VG2R
MSZ-LN35VG2W MSZ-LN35VG2B
MSZ-LN35VG2V MSZ-LN35VG2R
OBH766G

10
COOLING
FUNCTION SPL(dB(A)) LINE
Super High
FAN SPEED
HEATING
49
49
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
NC-10
MSZ-LN60VGW MSZ-LN60VGB
MSZ-LN60VGV MSZ-LN60VGR
MSZ-LN60VG2W MSZ-LN60VG2B
MSZ-LN60VG2V MSZ-LN60VG2R
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
OBH766G

11
OUTLINES AND DIMENSIONS5
Unit: mm
890
505
70
38.5
5669
43
43
1240
176212
225 22581 81
85360
48 217.5
57
259
385
60
217.5
259
7
38.5
127
74.5
21.5
57 150 683
28.523.5 95
118
100
180.5
33.5
303
874
81
237.5
7.5 48
307
5
233
AIR OUT
AIR IN INSTALLATION PLATE
DRAIN HOSE
INSTALLATION PLATE 11×20 OBLONG HOLE
11×26 OBLONG HOLE
INDOOR UNIT
PIPING
WALL HOLE ø65
193
60 19
193
60 21.4
<IN CASE OF T01>
<IN CASE OF T02>
REMOTE CONTROLLER
MSZ-LN18/25/35/50/60VGW
MSZ-LN18/25/35/50VG2W
MSZ-LN18/25/35/50/60VGV,VGB,VGR
MSZ-LN18/25/35/50VG2V,VG2R,VG2B
MSZ-LN18VGW/V/B/R-
E1
MSZ-LN18VG2W/V/B/R-
E1
,
ER1
,
EN1
,
ET1
,
E2
MSZ-LN25VGW/V/B/R-
E1
,
ER1
MSZ-LN25VG2W/V/B/R-
E1
,
ER1
,
ET1
,
E2
,
ER2
,
ET2
MSZ-LN35VGW/V/B/R-
E1
,
ER1
MSZ-LN35VG2W/V/B/R-
E1
,
ER1
,
ET1
,
E2
,
ER2
,
ET2
MSZ-LN50VGW/V/B/R-
E1
,
ER1
MSZ-LN50VG2W/V/B/R-
E1
,
ER1
,
ET1
,
E2
,
ER2
,
ET2
MSZ-LN60VGW/V/B/R-
E1
,
ER1
MSZ-LN60VG2W/V/B/R-
E1
,
ER1
,
ET1
,
E2
,
ER2
,
ET2
MSZ-LN25/35VGW-E1/ER1
MSZ-LN18VGW-E1/ER1 MSZ-LN50VGW-E1/ER1 MSZ-LN60VGW-E1/ER1/ET1
MSZ-LN60VG2W-E1/E2/ER1/ER2/ET1/ET2
PIPING
INSULATION ø 35 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø12.7)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
MSZ-LN18/25/35/50VG2W-E1/E2/ER1/ET1
MSZ-LN25/35/50VG2W-ER2/ET2 MSZ-LN18/25/35/50VG2W-EN1 MSZ-LN/25/35/50VG2W-EN2
PIPING
INSULATION ø 37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.64m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.59m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
MSZ-LN25/35VGV,VGR,VGB-E1/ER1
MSZ-LN18VGV,VGR,VGB-E1/ER1 MSZ-LN18/25/35/50VG2V,VG2R,VG2B-E1/E2/ ER1/ET1
MSZ-LN25/35/50VG2V,VG2R,VG2B-ER2/ET2
PIPING
INSULATION ø 35 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
MSZ-LN50VGV,VGR,VGB-E1/ER1
MSZ-LN60VGV,VGR,VGB-E1/ER1/ET1
MSZ-LN60VG2V,VG2R,VG2B
-E1/E2/ER1/ER2/ET1/ET2/A
MSZ-LN18/25/35/50VG2V,VG2R,VG2B-EN1
MSZ-LN25/35/50VG2V,VG2R,VG2B-EN2
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.64m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.59m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
OBH766G

12
MSZ-LN18VG2W-SC1 ,ER2 ,E3 MSZ-LN35VG2W-SC1 ,E3 ,ER3 MSZ-LN60VG2W-SC1 ,E3 ,ER3
MSZ-LN18VG2V- E3 MSZ-LN35VG2V- SC1 ,E3 ,ER3 MSZ-LN60VG2V-SC1 ,E3 ,ER3
MSZ-LN18VG2B- E3 MSZ-LN35VG2B-SC1 ,E3 ,ER3 MSZ-LN60VG2B-SC1 ,E3 ,ER3
MSZ-LN18VG2R- E3 MSZ-LN35VG2R-SC1 ,E3 ,ER3 MSZ-LN60VG2R-SC1 ,E3 ,ER3
MSZ-LN25VG2W-SC1 ,E3 ,ER3 MSZ-LN50VG2W
-
SC1
,
E3
,
ER3
MSZ-LN25VG2V-SC1 ,E3 ,ER3 MSZ-LN50VG2V
-
SC1
,
E3
,
ER3
MSZ-LN25VG2B-SC1 ,E3 ,ER3 MSZ-LN50VG2B
-
SC1
,
E3
,
ER3
MSZ-LN25VG2R-SC1 ,E3 ,ER3 MSZ-LN50VG2R
-
SC1
,
E3
,
ER3
MSZ-LN18/25/35/50VG2W-SC1 MSZ-LN25/35/50VG2V,VG2R,VG2B-SC1
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.64m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.59m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.64m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.59m
(FLARED CONNECTION ø12.7)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
MSZ-LN18/25/35/50VG2W-E3
MSZ-LN18VG2W-ER2/ET2
MSZ-LN25/35/50VG2W-ER3/ET3
MSZ-LN18/25/35/50VG2V,VG2R,VG2B-E3
MSZ-LN25/35/50VG2V,VG2R,VG2B-ER3/ET3
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø9.52)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
<IN CASE OF T01>
<IN CASE OF T02>
REMOTE CONTROLLER
MSZ-LN18/25/35/50/60VG2W
MSZ-LN18/25/35/50/60VGV2,VGB,VGR
890
177224
225 225
85
360
48 217.5
259
385
60
217.5
259
7
81
237.5
48
5
233
INSTALLATION PLATE 11×20 OBLONG HOLE
11×26 OBLONG HOLE
INDOOR UNIT
WALL HOLE ø65
115.5
115.5
505
70
38.5
1240
303
5669
43
57 150 683
874
193
60 19
193
21.4
60
57
38.5
127
74.5
95
118
100
180.5
AIR OUT
AIR IN INSTALLATION PLATE
DRAIN HOSE
PIPING
28.523.5
7.5 307
33.5
43
Unit: mm
MSZ-LN60VG2W-E3/ER2/ET2 MSZ-LN60VGW,VGV,VGB,VGR-E3/ER2/ET2
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø12.7)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
PIPING
INSULATION ø37 O.D
LIQUID LINE
ø6.35 - 0.5m
(FLARED CONNECTION ø6.35)
GAS LINE
ø9.52 - 0.45m
(FLARED CONNECTION ø12.7)
DRAIN HOSE
INSULATION ø29
CONNECTED PART ø16 O.D
OBH766G

13
WIRING DIAGRAM6
MSZ-LN18VGW MSZ-LN25VGW MSZ-LN35VGW MSZ-LN60VGW
MSZ-LN18VGV MSZ-LN25VGV MSZ-LN35VGV MSZ-LN60VGV
MSZ-LN18VGB MSZ-LN25VGB MSZ-LN35VGB MSZ-LN60VGB
MSZ-LN18VGR MSZ-LN25VGR MSZ-LN35VGR MSZ-LN60VGR
OBH766G

14
MSZ-LN18VG2W-E1 ,EN1 ,SC1 ,E2 ,E3 ,ER2
MSZ-LN18VG2V-E1 ,EN1 ,E2 ,E3
MSZ-LN18VG2B-E1 ,EN1 ,E2 ,E3
MSZ-LN18VG2R-E1 ,EN1 ,E2 ,E3
MSZ-LN25VG2W-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN25VG2V-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN25VG2B-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN25VG2R-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN35VG2V-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN35VG2B-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN35VG2R-E1 ,ER1 ,EN1 ,SC1 ,E2 ,ER2 ,EN2 ,E3 ,ER3
MSZ-LN60VG2W-E1 ,ER1 ,SC1 ,E2 ,ER2 ,E3 ,ER3
MSZ-LN60VG2V-E1 ,ER1 ,SC1 ,E2 ,ER2 ,E3 ,ER3
MSZ-LN60VG2B-E1 ,ER1 ,SC1 ,E2 ,ER2 ,E3 ,ER3
MSZ-LN60VG2R-E1 ,ER1 ,SC1 ,E2 ,ER2 ,E3 ,ER3
OBH766G

15
Konektör
Terminal bloğu
i-see
SENSÖR
SİVİÇ/
BUZZER
KARTI
HAVA
TEMİZLEME
CİHAZI
KANAT MOTORU
(DİKEY)
i-see SENSÖR
MOTORU
RESİSTÖR
PARÇA ADI
SİGORTA
(T3.15AL250V)
FAN MOTORU
VARİSTÖR
ODA SICAKLIK
TERMİSTÖRÜ
BORU SICAKLIK
TERMİSTÖRÜ
(ANA)
BORU SICAKLIK
TERMİSTÖRÜ
(YARDIMCI)
TERMİNAL BLOĞU
İÇ ÜNİTE GÜÇ
KARTI
İÇ ÜNİTE
ELEKTRONİK
KONTROL
KARTI
KİLİTLEME
ANAHTARI
(HAVA TEMİZLEME
CİHAZI)
RÖLE
DIŞ ÜNİTEYE
Wİ-Fİ ARAYÜZÜ
EKRAN
KAYDEDİCİ
DEVRE KARTI
NOTLAR :
1. Dış ünite elektronik kablolaması için dış ünite
elektronik kablo devre şemasını referans alınız.
2. Sadece bakır besleme kablosu kullanın
3. Sembolleri gösterir
KANAT MOTORU
(YATAY)
MSZ-LN18VG2W-
ET1
,
ET2
MSZ-LN35VG2W-
ET1
,
ET2
,
ET3
MSZ-LN18VG2V-
ET1
MSZ-LN35VG2V-
ET1
,
ET2
,
ET3
MSZ-LN18VG2B-
ET1
MSZ-LN35VG2B-
ET1
,
ET2
,
ET3
MSZ-LN18VG2R-
ET1
MSZ-LN35VG2R-
ET1
,
ET2
,
ET3
MSZ-LN25VG2W-
ET1
,
ET2
,
ET3
MSZ-LN60VG2W-
ET1
,
ET2
,
ET3
MSZ-LN25VG2V-
ET1
,
ET2
,
ET3
MSZ-LN60VG2V-
ET1
,
ET2
,
ET3
MSZ-LN25VG2B-
ET1
,
ET2
,
ET3
MSZ-LN60VG2B-
ET1
,
ET2
,
ET3
MSZ-LN25VG2R-
ET1
,
ET2
,
ET3
MSZ-LN60VG2R-
ET1
,
ET2
,
ET3
OBH766G

16
MSZ-LN50VGW
MSZ-LN50VGV
MSZ-LN50VGB
MSZ-LN50VGR
OBH766G

17
MSZ-LN50VG2W -
E1
,
ER1
,
EN1
,
SC1
,
E2
,
ER2
,
EN2
,
E3
,
ER3
MSZ-LN50VG2V -
E1
,
ER1
,
EN1
,
SC1
,
E2
,
ER2
,
EN2
,
E3
,
ER3
MSZ-LN50VG2B -
E1
,
ER1
,
EN1
,
SC1
,
E2
,
ER2
,
EN2
,
E3
,
ER3
MSZ-LN50VG2R -
E1
,
ER1
,
EN1
,
SC1
,
E2
,
ER2
,
EN2
,
E3
,
ER3
MSZ-LN50VG2W -
ET1
,
ET2
,
ET3
MSZ-LN50VG2V -
ET1
,
ET2
,
ET3
MSZ-LN50VG2B -
ET1
,
ET2
,
ET3
MSZ-LN50VG2R -
ET1
,
ET2
,
ET3
Konektör
Terminal bloğu
i-see
SENSÖR
SİVİÇ/
BUZZER
KARTI
HAVA
TEMİZLEME
CİHAZI
KANAT MOTORU
(DİKEY)
i-see SENSÖR
MOTORU
REAKTÖR
PARÇA ADI
SİGORTA
(T3.15AL250V)
FAN MOTORU
VARİSTÖR
ODA SICAKLIK
TERMİSTÖRÜ
BORU SICAKLIK
TERMİSTÖRÜ
(ANA)
BORU SICAKLIK
TERMİSTÖRÜ
(YARDIMCI)
TERMİNAL BLOĞU
İÇ ÜNİTE GÜÇ
KARTI
İÇ ÜNİTE
ELEKTRONİK
KONTROL
KARTI
KİLİTLEME
ANAHTARI
(HAVA TEMİZLEME
CİHAZI)
RÖLE
DIŞ ÜNİTEYE
Wİ-Fİ ARAYÜZÜ
EKRAN
KAYDEDİCİ
DEVRE KARTI
NOTLAR:
1. Dış ünite elektronik kablolaması için dış ünite
elektronik kablo devre şemasını referans alınız.
2. Sadece bakır besleme kablosu kullanın
3. Sembolleri gösterir
KANAT MOTORU
(YATAY)
OBH766G

18
REFRIGERANT SYSTEM DIAGRAM7
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Flared connection
Refrigerant pipe ø9.52
(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
Indoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Flared connection
Refrigerant pipe ø9.52 (LN50)
ø12.7 (LN60)
(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
MSZ-LN18VGW MSZ-LN25VGW MSZ-LN35VGW
MSZ-LN18VGV MSZ-LN25VGV MSZ-LN35VGV
MSZ-LN18VGB MSZ-LN25VGB MSZ-LN35VGB
MSZ-LN18VGR MSZ-LN25VGR MSZ-LN35VGR
MSZ-LN18VG2W MSZ-LN25VG2W MSZ-LN35VG2W
MSZ-LN18VG2V MSZ-LN25VG2V MSZ-LN35VG2V
MSZ-LN18VG2B MSZ-LN25VG2B MSZ-LN35VG2B
MSZ-LN18VG2R MSZ-LN25VG2R MSZ-LN35VG2R
MSZ-LN50VGW MSZ-LN60VGW
MSZ-LN50VGV MSZ-LN60VGV
MSZ-LN50VGB MSZ-LN60VGB
MSZ-LN50VGR MSZ-LN60VGR
MSZ-LN50VG2W MSZ-LN60VG2W
MSZ-LN50VG2V MSZ-LN60VG2V
MSZ-LN50VG2B MSZ-LN60VG2B
MSZ-LN50VG2R MSZ-LN60VG2R
OBH766G

19
SERVICE FUNCTIONS8
8-1. TIMER SHORT MODE
For service, the following set time can be shortened by bridging the timer short mode point on the electronic control P.C.
board.
(Refer to 10-7.)
• The set time for the ON/OFF timer can be reduced to 1 second for each minute.
• After the breaker is turned on, the time for starting the compressor, which normally takes 3 minutes, can be reduced to 1
minute. Restarting the compressor, which takes 3 minutes, cannot be reduced.
8-2. HOW TO SET REMOTE CONTROLLER EXCLUSIVELY FOR A PARTICULAR INDOOR UNIT
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
To operate the indoor units individually with each remote controller, assign a number to each remote controller according
to the number of the indoor unit.
This setting can be set only when all the following conditions are met:
• The remote controller is powered OFF.
• Weekly timer is not set.
• Weekly timer is not being edited.
(1) Hold down button on the remote controller for 2 seconds to enter the pairing mode.
(2) Press button again and assign a number to each remote controller.
Each press of button advances the number in the following order: 1 → 2 → 3 → 4.
(3) Press button to complete the pairing setting.
After you turn the breaker ON, the remote controller that first sends a signal to an indoor unit will be regarded as the
remote controller for the indoor unit.
Once they are set, the indoor unit will only receive the signal from the assigned remote controller afterwards.
8-3. SETTING THE INSTALLATION POSITION
Be sure to set the remote controller according to the installed position of the indoor unit.
Installation position:
Left: Distance to objects (wall, cabinet, etc.) is less than 50 cm to the left
Center: Distance to objects (wall, cabinet, etc.) is more than 50 cm to the left and right
Right: Distance to objects (wall, cabinet, etc.) is less than 50 cm to the right
The installation position can be set only when all the following conditions are met:
• The remote controller is powered OFF.
• Weekly timer is not set.
• Weekly timer is not being edited.
(1) Hold down button on the remote controller for 2 seconds to enter the position setting mode.
(2) Select the target installation position by pressing button. (Each press of the button displays the
positions in order: center → right → left.)
(3) Press button to complete the position setting.
Installation position Left Center Right
Remote controller
display
(Left)(Center)(Right)
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
OBH766G

20
8-4. AUTO RESTART FUNCTION
When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed
are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation
in the same mode just before the shutoff of the main power.
Operation
If the main power has been cut, the operation settings remain.
After the power is restored, the unit restarts automatically according to the memory.
(However, it takes at least 3 minutes for the compressor to start running.)
How to disable “AUTO RESTART FUNCTION”
Turn off the main power for the unit.
Cut the jumper wire to JR77 on the indoor electronic control P.C. board. (Refer to 10-7.)
NOTE:
• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote
controller.
• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is can-
celled.
• If the unit has been turned OFF with the remote controller before power failure, the auto restart function does not work as
the power button of the remote controller is OFF.
• To prevent the breaker from tripping OFF due to the rush of starting current, systematize other home appliance not to
turn ON at the same time.
• When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current
by adding to the system that allows the units to start one by one.
JR77
CN1J1CN151
INDOOR electronic control
P.C. board
CN102
OBH766G