LG Multi V 5 - Checking Point

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Checking Point

1. LGMV 064

2. Lack of Cooling 065

3. Lack of Heating 067

4. Check The Amount of Refrigerant 069

5. Cycle Changes by Amount of Refrigerant 073

Ⅲ. Trouble Shooting Guide

Basic Part

Multi V 5

Intorduction

Trouble Shooting

Function Control

Back

Basic PartBasic PartBasic PartBasic Part

Main Page

Table of Contents3
Ⅰ. Basic Part4
Unit Conversion5
Temperature Vs. Pressure of Ref5
P-H Diagram_R410A7
P-H Diagram_R134A8
Ⅱ. Multi V 5 Introduction9
Nomenclature10
Line up / Capacity11
Piping Diagrams13
Wiring Diagrams28
Checking Point32
Lgmv33
Lack of Cooling33
Lack of Heating34
Check the Amount of Refrigerant35
Cycle Changes by Amount of Refrigerant37
Self-Diagnosis Function38
Error Code Display39
Error Code Check41
Compressor50
Eev75
Solenoid Valve75
Way Valve75
The Phenomena from Main Component Failure76
Compressor76
Check Valve (Outdoor EEV Check Valve)85
Check Valve (Oil Separator)85
Outdoor Fan & Fan Motor86
Temperature Sensor87
Pressure(High/Low) Sensor87
Humidity Sensor88
Pressure Switch89
Main PCB89
External PCB90
Inverter PCB91
Fan PCB92
Communication PCB93
Phase Bridge Diode94
Inverter IGBT94
Fan IPM95
Central Controller PC Status96
App. Service & Replace Method of Control Box, Inverter PCB98
Ⅳ. Function Control98
Generation 4 Features99
Function Control Setting99
FDD Mode101
Function Mode106
FN 4 Overall Defrost109
FN 9 Low Ambient Kit112
FN 12 Compressor Max. Frequency Limit113
Auto Dust Removal Mode113
The Connecting of Central Control at IDU Terminals117
FN 21 the Smart Plug118
Overall Defrost Entrance for Low Temperature118
SVC Mode119
Display Cycle Information124
SE 9 Noise Reduction125
Heating Fan Low Noise126
IDU Mode127
EEV Pulse of Non-Operating IDU in Heating127
Set IDU Superheat128
Set IDU Subcool128
Set Auto Pipe Detection128
Start Auto Pipe Detection128
Set Zone Master129
Operating IDU Low Noise130
In Cooling IDU EEV Max. Pulse130
Comfort Cooling131
Non-Operating IDU Subcool132
Set IDU Superheat for Fan132

LG Multi V 5 - Checking Point

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