LG Multi V Service Manual

- 101 -
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Self-diagnosis function
Display Title Cause of Error
Outdoor unit related error
3 6
Outdoor Unit Low Compression Ratio
Limited
Outdoor Unit Low Compression Ratio Limited
4 0
Outdoor Unit Inverter Compressor CT
Sensor Fault
Outdoor Unit Inverter Compressor CT Sensor open or short
4 1
Outdoor Unit Inverter Compressor1
Discharge Temperature Sensor Fault
Outdoor Unit Inverter Compressor Discharge Temperature
Sensor open or short
4 2 Outdoor Unit Low Pressure Sensor Fault Outdoor Unit Low Pressure Sensor open or short
4 3 Outdoor Unit High Pressure Sensor Fault Outdoor Unit High Pressure Sensor open or short
4 4 Outdoor Unit Air Temperature Sensor Fault Outdoor Unit Air Temperature Sensor open or short
4 5
Outdoor Unit Heat Exchanger Temperature
Sensor (Front side) Fault
Outdoor Unit Heat Exchanger Temperature Sensor(Front side)
open or short
4 6
Outdoor Unit Suction Temperature Sensor
Fault
Outdoor Unit Suction Temperature Sensor open or short
5 0
Omitting connection of R, S, T power of
Outdoor Unit
Omitting connection of outdoor unit
5 1 Excessive capacity of indoor units
Excessive connection of indoor units compared to capacity of
Outdoor Unit
5 2
Communication error : inverter PCB → Main
PCB
Failing to receive inverter signal at main PCB of Outdoor Unit
5 3
Communication error : indoor unit → Main
PCB of Outdoor Unit
Failing to receive indoor unit signal at main PCB of Outdoor
Unit .
5 7
Communication error : Main PCB →
inverter PCB
Failing to receive signal main PCB at inverter PCB of Outdoor
Unit
6 0
Inverter PCB EEPROM Error of Outdoor
Unit
Access Error of Inverter PCB of Outdoor Unit
6 2
Outdoor Unit Inverter Heatsink High
Temperature
System is turned off by Outdoor Unit Inverter Heatsink High
Temperature
6 5
Outdoor Unit Inverter Heatsink Temperature
Sensor Fault
Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
6 7 Outdoor Unit Fan Lock Restriction of Outdoor Unit
7 1 Converter CT Sensor Error of Outdoor Unit Converter CT Sensor Error of Outdoor Unit
8 6 Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Outdoor Unit Main MICOM and
EEPROM or omitting EEPROM

LG Multi V Specifications

General

Brand	LG
Model	Multi V
Category	Air Conditioner
Language	English