LG multi V PLUS Service Manual

258 Trouble Shooting Guide
Self-diagnosis function
Connection of excessive capacity
(excessive Indoor Unit capacity)
IMV control part ➡ Main Outdoor Unit
control part
Indoor Unit ➡ Main Outdoor Unit con-
trol part
Reverse connection of the R,S,T
power line of Main Outdoor Unit
Transmission related error (Main
control part ➡ INV control part)
Excessive temperature of INV control
part radiation panel
Fan temperature sensor
Current detect (CT) sensor of Main Outdoor Unit Inverter
compressor open or short
Open or short of discharge temperature sensor of Main
Outdoor Unit Inverter compressor
Open or short of Outdoor Low Pressure sensor of Main
Outdoor Unit
Open or short of Outdoor High Pressure sensor of Main
Outdoor Unit
Open or short of Outdoor air sensor of Main Outdoor Unit
Open or short of heat exchanger sensor of Main Outdoor
Unit (front side)
Open or short of Suction temperature sensor of Main
Outdoor Unit
Open or short of discharge temperature sensor of the con-
stant speed compressor of Main Outdoor Unit
Open or short Heat exchanger sensor of Main Outdoor Unit
(rear side)
Current detect a(CT) sensor of Main
Outdoor Unit Inverter compressor
Discharge temperature sensor of Main
Outdoor Unit Inverter compressor
Outdoor Low Pressure sensor of Main
Outdoor Unit
Outdoor High Pressure sensor of Main
Outdoor Unit
Outdoor air sensor of Main Outdoor
Unit
Heat exchanger sensor of Main
Outdoor Unit (front side)
Suction temperature sensor of Main
Outdoor Unit
Discharge temperature sensor of the
constant speed compressor of Main
Outdoor Unit
Heat exchanger sensor of Main
Outdoor Unit (rear side)
Display Title Cause of Error
4
4
4
4
4
4
4
4
4
0
1
2
3
4
5
6
7
8
5
5
5
5
5
6
6
1
2
3
4
7
2
5
The displayed number of Indoor Units being connected is
over rated capacity of Outdoor Unit
Failing to receive signal of the Main Outdoor Unit control part
from the INV control part
Failing to receive signal of the Main Outdoor Unit control part
from the Indoor Unit control part
Misconnection or disconnection of R,S,T power line of Main
Outdoor Unit
Failing to receive signal of the INV control part from the Main
control part
Excessive temperature of INV control part radiation panel
Open or short of fan temperature sensor
Outdoor unit related errorTransmission related error
Outdoor Unit
related error

LG multi V PLUS Specifications

General

Brand	LG
Model	multi V PLUS
Category	Air Conditioner
Language	English