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FM57AH U33
LG FM57AH U33 User Manual
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Multi Air Conditioner
SVC MANUAL(General)
MODEL : Multi-Inverter Type
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
2
Table of Contents
Table of Contents
2
Part 1 General Information
3
Safety Precautions
4
Model Line up
7
Outdoor Units
9
Nomenclature
12
Part 2 Functions & Controls
14
List of Functions & Controls
15
Air Flow
17
Auto Swing (Left & Right)
17
Auto Swing (up & Down)
17
Chaos Swing (Up/Down)
17
Air Flow Step
18
Chaos Wind (Auto Wind)
18
Jet Cool Mode Operation
18
Swirl Wind Swing
18
Air Purifying
19
PLASMA Air Purifying System
19
Installation Functions
20
External Static Pressure) Setting
20
High Ceiling Operation
23
Reliability
24
Hot Start
24
Self-Diagnosis Function
24
Soft Dry Operation
24
Convenience Functions & Controls
25
Auto Changeover Operation
25
Auto Cleaning Operation
29
Heat Pump
29
Cooling Only
29
Auto Operation (Fuzzy Operation)
30
Auto Restart Operation
31
Child Lock Function
32
Forced Operation
32
Group Control
33
Sleep Timer Operation
35
Timer(On/Off)
35
Weekly Program
35
Two Thermistor Control
36
Special Function & KIT
37
Zone Controller
37
Low Ambient Control
37
Space Control
38
Auto Elevation Grille
38
Defrost Control(Heating)
39
Part 3 Control Logic
40
Compressor
41
Step(Frequency) Control
43
Reversing Valve Operation
44
Reversing Valve Operaton
44
Discharge Pipe Control
45
Input Current Control
46
Outdoor Fan Control
47
Defrost Control
48
LEV Control
49
Oil Restoration Operation
51
Compressor Warm-Up Control Logic
51
Heat Sink Control
52
Part 4 Test Run
53
Check before Test Run
54
Test Run Flow Chart
55
Test Runing
56
Ceiling Cassette Type
58
Part 5 Trouble Shooting Guide
59
Self-Diagnosis Function
60
Pump down
64
Pumping down
64
Evacuation
65
Gas Charging
66
Cycle Part
67
Electronic Parts
68
When Indoor Fan Does Not Operate
71
When the Louver Does Not Operate
72
Troubleshooting Indoor Error
73
Troubleshooting Outdoor Error
76
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LG FM57AH U33 Specifications
General
Capacity
1.5 Ton
Star Rating
3 Star
Refrigerant
R32
Type
Split Air Conditioner
Power Supply
230V, 50Hz
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