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CT18F NQ0
LG CT18F NQ0 User Manual
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Part 4 T
rouble Shooting
- 102
-
Copyright © 2019 - 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Items for
checking
Sub-items for
checking
Checking
power source
Installation
Checking
PCBA
Checking
input voltage
Checking
the wire
coating of
power source
Checking
reactor
connection
state
Checking
power
connection
state
Checking DC
Link voltage
charging
circuit
❈
Check for AC 190~260 V
❈
Check the wire for possible coat chopping and short.
Flow of trouble diagnosis
6.7 T
roubleshooting Outdoor Error
CH 23 (DC Link V
oltage Low)
101
103
Table of Contents
Table of Contents
2
Part 1 General Information
3
Safety Precautions
4
Model Line up
13
Nomenclature
16
Part 2 Functions & Controls
20
1 List of Functions & Accessory
21
2 Air Flow
32
Auto Swing (Left & Right)
32
Auto Swing (up & Down)
32
Chaos Swing (Up/Down)
32
Air Flow Step
33
Chaos Wind (Auto Wind)
33
Jet Cool Mode Operation
33
Swirl Wind Swing
33
3 Installation Functions
34
External Static Pressure) Setting
34
High Ceiling Operation
38
4 Reliability
39
Hot Start
39
Self-Diagnosis Function
39
Soft Dry Operation
39
5 Convenience Functions & Controls
40
Cooling & Heating Operations
40
Auto Cleaning Operation
41
Auto Changeover Operation
41
Auto Restart Opeartion
41
Child Lock Function
42
Forced Operation
42
Group Control
43
Sleep Timer Operation
44
Timer(On/Off)
44
Weekly Program
45
Two Thermistor Control
47
6 Special Function & KIT
48
Low Ambient Control
48
Space Control
48
Part 3 Basic Control
49
Normal Operation
50
Compressor Control
50
EEV( Electronic Expansion Valve) Control
50
Table of Contents
51
1 Self-Diagnosis Function
52
Error Indicator (Indoor)
52
Error Indicator (Outdoor)
53
2 Pump down
54
Evacuation (All Amount of Refrigerant Leaked)
55
3 Evacuation
55
Gas Charging (after Evacuation)
56
4 Gas Charging
56
5 Cycle Part
57
6 Electronic Parts
58
The Product Doesn't Operate at All
58
The Product Doesn't Operate with the Remote Controller
59
The Compressor/Outdoor Fan Are Don't Operate
60
When Indoor Fan Does Not Operate
61
When the Louver Does Not Operate
62
Troubleshooting Indoor Error
63
Troubleshooting Outdoor Error
70
4
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LG CT18F NQ0 Specifications
General
Brand
LG
Model
CT18F NQ0
Category
Air Conditioner
Language
English
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