LG AS-H126U / LS-C126U / LS-H126U Service Manual ▷ View online
SERVICE MANUAL
Room Air Conditioner
CAUTION
-
BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
PRECAUTIONS IN THIS MANUAL.
-
ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL: LS-C126U_Series
LS-H126U_Series
AS-H126U_Series
AS-H126U_Series
E-MAIL
Contents
Details of 2003 LG Model Name ............................................................................................ 3
Functions ................................................................................................................................ 4
Product References .............................................................................................................. 7
Dimensions ............................................................................................................................. 8
Refrigeration Cycle Diagram ............................................................................................... 10
Wiring Diagram..................................................................................................................... 11
Operation Details ................................................................................................................. 12
Display Function .................................................................................................................. 19
Installation ............................................................................................................................ 20
Operation .............................................................................................................................. 33
Disassembly of the parts (Indoor Unit) .............................................................................. 34
2-way, 3-way Valve................................................................................................................ 37
Cycle Troubleshooting Guide.............................................................................................. 45
Electronic Parts Troubleshooting Guide............................................................................ 46
Electronic Control Device.................................................................................................... 53
Schematic Diagram .............................................................................................................. 55
Exploded View and Replacement Parts List...................................................................... 56
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-3-
Details of 2003 LG Model Name
1
2
Code Type
Code
of
Model
Meaning
1
Producing Center/
A~Z
L: ChangWon R22, A: ChangWon R410A, C: ChangWon R407C
Refrigerant
2
Type of Air conditioner
A~Z
S: Split Type Air conditioner
3
Cooling/Heating
A~Z
C: C/O, H: H/P, X: C/O + E/H, Z: H/P + E/H
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
Chassis
A~Z
Name of tool of unit
8
Color
A~Z
R: Mirror
B: Blue
N: Walut
W: White
M: Metal
C: Cherry
9
Function
A~Z
10
Serial No.
0~9
-
Basic
A
Basic + 4Way
B
Plasma Filter
C
Plasma Filter + 4Way
D
Tele + LED + 4Way
E
Tele + LCD + Plasma F + 4Way
F
Tele Multi + LCD + Plasma F + 4Way
G
Low A + Plasma F
H
Low A + Plasma F + 4Way
J
Plasma F + 4Way + Oxygen Generator
K
A/change + Plasma F
L
A/change + Plasma F + 4Way
M
3
4
5
6
7
8
9
10
1) Selection of the best location
1. Indoor unit
• Do not have any heat or steam near the unit.
• Select a place where there are no obstacles in front of
• Select a place where there are no obstacles in front of
the unit.
• Make sure that condensation drainage can be conve-
niently routed away.
Do not install near a doorway.
Do not install near a doorway.
• Ensure that the space around the left and right of the
unit is more than "A". The unit should be installed as
high on the wall as possible, allowing a minimum of
"B" from ceiling.
high on the wall as possible, allowing a minimum of
"B" from ceiling.
• Use a stud finder to locate studs to prevent unneces-
sary damage to the wall.
2. Outdoor unit
• If an awning is built over the unit to prevent direct sun-
light or rain exposure, make sure that heat radiation
from the condenser is not restricted.
from the condenser is not restricted.
• Ensure that the space around the back and sides is
more than 10cm. The front of the unit should have
more than 70cm of space.
more than 70cm of space.
• Do not place animals and plants in the path of the
warm air.
• Take the air conditioner weight into account and select
a place where noise and vibration are minimum.
• Select a place so that the warm air and noise from the
air conditioner do not disturb neighbors.
2) Piping length and elevation
Installation
1. Installation of indoor, Outdoor unit
-20-
More than "A"
More than "B"
More than 2.3m
More than "B"
More than 10cm
More than 10cm
More
than 60cm
than 60cm
More than 60cm
More than 70cm
Install the indoor unit on the wall where the height
from the floors more than 2.3 meters.
from the floors more than 2.3 meters.
CAUTION
• Capacity is based on standard length and maximum
allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
CAUTION
Grade
Clearance(cm)
A
B
7K~14K
10
5
7k~14k
3/8"(Ø9.52) 1/4"(Ø6.35)
4 or 7.5
7
15
20
1/2"(Ø12.7) 1/4"(Ø6.35)
4 or 7.5
7
15
20
Pipe Size
Capacity
(Btu/h)
GAS
LIQUID
Max.
Length
A
(m)
Additional
Refrigerant
(g/m)
Max.
Elevation
B
(m)
Standard
Length
(m)
If case more than 5m
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit
B
I
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