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Therma V AHBW Series
LG Therma V AHBW Series User Manual
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CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com
System
GENERAL SVC MANUAL
MODEL : AHBW Series
2
Table of Contents
Table of Contents
2
Safety Precautions
3
General Information
7
External Appearance
8
Model Name and Related Information
8
Cycle Compartment
9
Description
9
Model Number Nomenclature
11
Features and Controls
13
List of Function
14
Summarized Features
16
Emergency Control
16
Remote Controller
16
Controller Configuration
16
Display Panel
17
Special Function
18
Child Lock Function
18
Sleep Timer Operation
19
Timer (on / Off)
19
Weekly Program
19
Sanitary Tank Heating/Heater Scheduler
19
System Set-Up
20
DIP Switch Setting
20
DIP Switch Information
21
Notice
22
Control Panel Setting
24
How to Enter Installer Setting Mode
24
Summary
25
Example of Function Code Display
25
Common Setting
31
Temperature Range Setting
32
Temperature Control Parameter Setting and Etc
33
Check before Test Run
38
Test Run Flow Chart
39
Basic Control
40
Normal Operation
41
Compressor Control
41
EEV Control
41
Replacement
42
Replacement Procedure for Compressor
43
Replacement Procedure for INV PCB
44
Caution for Assembling Outdoor Panels after Test Run
45
Trouble Shooting
46
Checking Key Components of Unit
48
Flow Switch
48
Water Pump
49
Electric Heater
50
Cautions When Measuring Voltage and Current of Inverter Power Circuit
52
Compressor
52
Fan Motor
53
Concept of ‘Classified Trouble’
54
Self-Diagnosis Feature
54
Error Code List
55
Main PCB Assembly
55
Inverter
56
Check Flow Chart
57
Trouble Shooting Guide
57
Error Diagnosis and Countermeasure Flow Chart
59
Comp Checking Method
67
Inspecting Inverter Compressor Discharge Sensor
80
Inspecting Cond Pipe Sensor
87
Sensor Resistance Table
95
Check Resistance of the Compressor
97
Check Insulation Resistance of the Compressor
97
4
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LG Therma V AHBW Series Specifications
General
Brand
LG
Model
Therma V AHBW Series
Category
Air Conditioner
Language
English
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