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MULTI V M ARNU07GTR 4 Series
LG MULTI V M ARNU07GTR 4 Series Manuals
Manuals and User Guides for LG MULTI V M ARNU07GTR 4 Series. We have
1
LG MULTI V M ARNU07GTR 4 Series manual available for free PDF download: Svc Manual
LG MULTI V M ARNU07GTR 4 Series Svc Manual (91 pages)
Brand:
LG
| Category:
Air Conditioner
| Size: 14.58 MB
Table of Contents
Table of Contents
2
Safety Precautions
3
Part 1 General Information
7
1 Model Names
8
Indoor Unit
8
Multi V M
8
2 External Appearance
9
Indoor Unit
9
Multi V M
10
3 Nomenclature
11
Indoor Unit
11
Multi V M
11
Part 2 MULTI V M
12
Function
14
1 Basic Control
15
Compressor Control
15
Normal Operation
15
Master and Slave Unit's EEV Control
16
2 Special Control
17
Oil Return Control
17
Defrost Control
19
Self-Diagnosis Function
19
Stop Operation
20
3 Protection Control
21
Pressure Protection Control
21
Discharge Temperature Control
22
Inverter Protection Control
22
Phase Detection
22
Pressure Switch
22
4 Other Control
23
Initial Setup
23
Pump down
26
Night Low Noise Function
27
Vacuum Mode
28
Static Pressure Compensation Mode
28
Cool & Heat Selector
29
Cycle Data View
30
Refrigerant Noise Reduction Mode
31
Part 3 PCB Setting and Test Run
32
Part 4 Trouble Shooting Guide
37
Trouble Shooting Guide
38
1 The Phenomena from Main Component Failure
39
2 Checking Method for Key Components
40
Compressor
40
Fan Motor
41
Electronic Expansion Valve
42
Phase Bridge Diode Checking Method
45
Inverter IPM Checking Method
46
Pressure Sensor(High/Low Pressure Sensor)
47
Outdoor Fan
47
Way Valve
48
Temperature Sensor
48
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