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Mitsubishi Electric MSZ-LN18VG2W-E1 - User Manual

Mitsubishi Electric MSZ-LN18VG2W-E1
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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

Table of Contents

Questions and Answers

  • E
    Eric DavisAug 19, 2025
    How to fix a malfunctioning Mitsubishi Electric Air Conditioner remote?
    • P
      Pam BoothAug 19, 2025
      If your Mitsubishi Electric Air Conditioner remote controller is malfunctioning, the batteries might be weak. Replacing the batteries should allow the remote controller to operate normally.
  • J
    James TaylorAug 21, 2025
    How to fix Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner remote controller malfunction?
    • M
      Matthew Campbell Jr.Aug 21, 2025
      Weak batteries can cause the remote controller for your Mitsubishi Electric Air Conditioner to malfunction. Replace the batteries to ensure normal operation.
  • A
    Amanda GarnerAug 23, 2025
    What to do if the POWER lamp on my Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner flashes 4 times?
    • K
      Kimberly WilliamsAug 23, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner flashes 4 times, it indicates a problem with the indoor unit control system. The suggested solution is to replace the indoor electronic control P.C. board.
  • L
    leekatherineAug 26, 2025
    What does it mean when the POWER lamp on my Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner flashes 7 times?
    • A
      Anthony GomezAug 26, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner flashes 7 times, it suggests an issue with the outdoor control system. The solution involves replacing the inverter P.C. board or the outdoor electronic control P.C. board.
  • C
    Christopher AdamsAug 28, 2025
    What to do if POWER lamp blinks 4 times on Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner?
    • M
      Mark BradleyAug 28, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 4 times, it means there's a problem with the indoor unit's control system. The suggested solution is to replace the indoor electronic control P.C. board.
  • B
    Bryce BrownAug 30, 2025
    What does POWER lamp 7-time blink mean on Mitsubishi Electric Air Conditioner?
    • L
      lhamiltonAug 30, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 7 times, it indicates a problem with the outdoor control system. The solution is to replace either the inverter P.C. board or the outdoor electronic control P.C. board.
  • P
    Paul RobertsonSep 1, 2025
    What to do if POWER lamp blinks 2 times on Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner?
    • C
      cantrelllindaSep 1, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 2 times, it indicates a problem with the room temperature or indoor coil thermistor in the indoor unit. Check the room temperature thermistor and the indoor coil thermistor, referring to section 10-7, "Test point diagram and voltage."
  • H
    Henry ArmstrongSep 4, 2025
    Why POWER lamp blinks 5 times on Mitsubishi Electric MSZ-LN18VG2W-E1 Air Conditioner?
    • I
      ivasquezSep 4, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 5 times, it indicates an abnormality in the outdoor power system. Refer to "How to check inverter/compressor."
  • C
    Christopher Gilbert MDSep 6, 2025
    What does POWER lamp 6-time blink mean on Mitsubishi Electric MSZ-LN18VG2W-E1?
    • B
      Bradley WallSep 6, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 6 times, it indicates a problem with the thermistor in the outdoor unit. Refer to "Check of outdoor thermistors."
  • K
    Karen PhillipsSep 8, 2025
    What does POWER lamp 3-time blink mean on Mitsubishi Electric Air Conditioner?
    • D
      douglas95Sep 8, 2025
      If the POWER lamp on your Mitsubishi Electric Air Conditioner blinks 3 times, it indicates a problem with the indoor fan motor. Refer to section 10-6, "Check of indoor fan motor."

Mitsubishi Electric MSZ-LN18VG2W-E1 Specifications

General IconGeneral
Cooling Capacity5.0 kW
Heating Capacity6.0 kW
Seasonal Energy Efficiency Ratio (SEER)8.5
Power Supply220-240 V, 50 Hz
RefrigerantR32
Indoor Unit Dimensions (HxWxD)307x890x233 mm
Outdoor Unit Dimensions (HxWxD)550x800x285 mm
Weight (Indoor Unit)15.5 kg
Weight (Outdoor Unit)35 kg
Noise Level (Indoor Unit)19-45 dB(A)
Noise Level (Outdoor Unit)49 dB(A)
Energy Efficiency Class CoolingA+++
Energy Efficiency Class HeatingA+++

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