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2 Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name ...............................................................................................................................................3
Safety Precautions..........................................................................................................................................5
Dimensions ...................................................................................................................................................10
Safety Precautions..........................................................................................................................................5
Dimensions ...................................................................................................................................................10
Symbols Used in this Manual ...................................................................................................................10
Indoor Unit................................................................................................................................................10
Outdoor Unit .............................................................................................................................................11
Indoor Unit................................................................................................................................................10
Outdoor Unit .............................................................................................................................................11
Product Specifications ................................................................................................................................12
Installation .....................................................................................................................................................15
Installation .....................................................................................................................................................15
Selection of the Best Location..................................................................................................................15
Piping Length and Elevation.....................................................................................................................15
How to Fix Installation Plate .....................................................................................................................16
Drill a Hole in the Wall ..............................................................................................................................16
Flaring Work .............................................................................................................................................17
Connection of Piping Indoor .....................................................................................................................18
Connection of the Pipes-Outdoor .............................................................................................................21
Connect the Cable to the Indoor Unit. ......................................................................................................22
Connect the Cable to the Outdoor Unit ....................................................................................................23
Checking the Drainage.............................................................................................................................24
Form the Piping ........................................................................................................................................24
Test Running ............................................................................................................................................25
Piping Length and Elevation.....................................................................................................................15
How to Fix Installation Plate .....................................................................................................................16
Drill a Hole in the Wall ..............................................................................................................................16
Flaring Work .............................................................................................................................................17
Connection of Piping Indoor .....................................................................................................................18
Connection of the Pipes-Outdoor .............................................................................................................21
Connect the Cable to the Indoor Unit. ......................................................................................................22
Connect the Cable to the Outdoor Unit ....................................................................................................23
Checking the Drainage.............................................................................................................................24
Form the Piping ........................................................................................................................................24
Test Running ............................................................................................................................................25
Operation ......................................................................................................................................................26
Function of Controls .................................................................................................................................26
Display Function ......................................................................................................................................30
Self-diagnosis Function ............................................................................................................................30
Remote Control Operations......................................................................................................................31
Display Function ......................................................................................................................................30
Self-diagnosis Function ............................................................................................................................30
Remote Control Operations......................................................................................................................31
Disassembly ..................................................................................................................................................32
Indoor Unit................................................................................................................................................32
Schematic Diagram.......................................................................................................................................35
Electric Control Device .............................................................................................................................35
Wiring Diagram.........................................................................................................................................37
Components Location ..............................................................................................................................39
Wiring Diagram.........................................................................................................................................37
Components Location ..............................................................................................................................39
Troubleshooting Guide ................................................................................................................................41
Refrigeration Cycle Diagram ....................................................................................................................41
Pipe Length and the Elevation .................................................................................................................42
2-way, 3-way Valve .................................................................................................................................43
Cycle Parts ...............................................................................................................................................49
Electronic Parts ........................................................................................................................................50
Pipe Length and the Elevation .................................................................................................................42
2-way, 3-way Valve .................................................................................................................................43
Cycle Parts ...............................................................................................................................................49
Electronic Parts ........................................................................................................................................50
Exploded View ..............................................................................................................................................57
Replacement Parts List ................................................................................................................................60
Replacement Parts List ................................................................................................................................60
Service Manual 3
LG Model Name
1
2
3
4
5
6
7
8
9
Code
Type
Code of Model
Meaning
1,2
Type of Airconditioner
A~Z
LS: LG Split Type Airconditioner
3
Chassis
A~Z
Name of toll of Unit
Ex. LS-R
Ex. LS-R
➔
S R Chassis
4,5
Capacity(Btu/h)
1~9
Cooling/Heating Capacity
Ex. "09"
Ex. "09"
➔
9,000Btu/h
6
Electric Range
1~9
Electric Standard
1
1
➔
115V/60Hz
6
➔
220~240V/50Hz
2
➔
220V/60Hz
7
➔
110V, 50/60Hz
3
➔
208~230V/60Hz 8
➔
380~415V/50Hz
5
➔
200~220V/50Hz
9
➔
380~415V/60Hz
7
Serial No.
0~9
A~Z
8
Cooling/Heating
A~Z
9
LG/OEM Brand
A~Z
L: LG Brand
M: 1st OEM Brand
G: 2nd LG Brand
N: 2nd OEM Brand
-
Basic
A
0
Plasma Filter
B
1
Auto Swing + Plasma Filter
C
2
Telephone + LED Display
D
3
Telephone + LCD Display
E
4
Auto Swing + Plasma Filter + Telephone + LCD
F
5
Low Ambient + Ambient/change
G
6
Plasma Filter + Low Ambient + Ambient/change
H
7
Internet
J
8
Auto Swing + Plasma Filter + Oxygen Generator
K
9
Auto Swing + Soft Start
Z
L
Auto Swing + Star Rating
M
Y
Auto Swing + Star Rating + Plasma Filter
N
X
Auto Swing + Soft Start + Star Rating
P
W
Auto Swing + Soft Start + Star Rating 4 + Plasma
Q
V
Auto Swing + Telephone + LCD
R
U
Auto Swing + Telephone + LCD + Soft Start
S
T
C/O
C
A
D
G
K
H/P
H
B
E
J
L
E/H+C/O
X
5
7
-
-
E/H+H/P
Y
6
8
-
-
C/O
F
M
Q
-
-
H/P
R
P
S
-
-
C/O
V
W
1
3
H/P
N
Y
2
4
H/P
T
H/P
U
INDOOR
BASIC
BASIC
PLASMA
PLASMA
GOLD FIN
OUTDOOR
BASIC
GOLD FIN
GOLD FIN
BASIC
GOLD FIN
UNIT
R22
HFC
R22+AC INV.
HFC+AC
INV.
HFC+DC
INV.
2002
4 Room Air Conditioner
1
2
-
3
4
5
6
7
8
9
10
Code
Type
Code of Model
Meaning
1
Producing Center,
A~Z
L: Chang-won R22
N: India
Refrigerant
A: Chang-won R410A
Z: Brazil
C: Chang-won R407C
D: Indonesia
T: China
M: Mexico
K: Turkey R22
V: Vietnam
E: Turkey R410A
S: Out Sourcing
H: Thailand
2
Product Type
A~Z
S: Split Type Air Conditioner
3
Cooling/Heating/Inverter
A~Z
C: Cooling only
H: Heat pump
X: C/O + E/Heater
Z: H/P + E/Heater
H: Heat pump
X: C/O + E/Heater
Z: H/P + E/Heater
V: AC Inverter C/O
N: AC Inverter H/P
Q: DC Inverter C/O
W: DC Inverter H/P
N: AC Inverter H/P
Q: DC Inverter C/O
W: DC Inverter H/P
4, 5
Capacity
0~9
Cooling/Heating Capacity
Ex. "09"
Ex. "09"
→
9,000 Btu/h
6
Electric Range
1~9
1: 115V/60Hz,
A: 220V, 50Hz, 3Phase
A~Z
2: 220V/60Hz
B: 208~230V, 60Hz, 3Phase
3: 208-230V/60Hz
C: 575V, 50Hz, 3Phase
5: 200-220V/50Hz
D: 440~460, 60Hz, 3Phase
6: 220-240V/50Hz
E: 265V, 60Hz
7: 110V, 50/60Hz
F: 200V, 50/60Hz
8: 380-415V/50Hz
9: 380-415V/60Hz
9: 380-415V/60Hz
7
Chassis
A~Z
Name of Chassis of Unit
Ex. LSP
Ex. LSP
→
SP Chassis
8
Look
A~Z
Look,
Color (Artcool Model)
Color (Artcool Model)
9
Function
A~Z
10
Serial No.
1~9
LG Model De
* ARTCOOL COLOR
velopment Serial No.
Basic
A
Basic+4Way
B
Plasma Filter
C
Plasma Filter+4 Way
D
Tele+LCD
E
Tele+LCD+Nano plasma+4Way
F
Nano Plasma F+(A/changeove)+A/clean+Low A
G
Nano Plasma F+(A/changeove)+A/clean+4way+Low A
H
Tele+LED+4way
I
Internet
J
Plasma F+4Way+Oxy generator
K
Nano Plasma F+(A/changeove)+A/clean
L
Nano Plasma F+(A/changeove)+A/clean+4way
M
Nano Plasma F+(A/changeove)+A/clean+PTC
N
Nano Plasma F+(A/changeove)+Autoclean+4way+PTC
P
Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC
Q
Negative ION+A/Clean
R
(Nano)Plasma+Negative ION+A/Clean
S
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean
T
Nano Plasma F+4Way+(A/changeove)+A/clean+
U
R
Mirror
W
White
B
Blue
D
Wood
M
Metal
C
Cherry
2003~
Service Manual 5
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
be followed.
■
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
classified by the following indications.
■
Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
Do not use damaged power cords, plugs, or a
loose socket.
loose socket.
Always use the power plug and socket with the
ground terminal.
ground terminal.
• There is risk of fire of electric shock.
• There is risk of electric shock.
Install the panel and the cover of control box
securely.
securely.
.Do not modify or extend the power cord.
• There is risk of fire of electric shock.
• No grounding may cause electric shock.
■
Installation