LG LS-R126ABL / LS-R126ARL Service Manual ▷ View online
Contents
Details of 2002 LG Model Name ............................................................................................ 3
Functions ................................................................................................................................ 4
Product References .............................................................................................................. 7
Dimensions ............................................................................................................................. 8
Refrigeration Cycle Diagram ............................................................................................... 10
Wiring Diagram..................................................................................................................... 11
Operation Details ................................................................................................................. 12
Display Function .................................................................................................................. 19
Self-diagnosis Function....................................................................................................... 19
Installation ............................................................................................................................ 20
Operation .............................................................................................................................. 33
Disassembly of the parts (Indoor Unit) .............................................................................. 34
2-way, 3-way Valve................................................................................................................ 37
Cycle Troubleshooting Guide.............................................................................................. 44
Electronic Parts Troubleshooting Guide............................................................................ 45
Electronic Control Device.................................................................................................... 52
Schematic Diagram .............................................................................................................. 55
Exploded View and Replacement Parts List...................................................................... 56
-2-
Details of 2002 LG Model Name
-3-
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 A + A/change
G
6
Plasma Filter + Low A + A/change
H
7
Internet
J
8
Auto Swing + Plasma Filter + Oxygen Generator
K
9
Auto Swing + Soft Start
L
Z
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
BASIC
GOLD FIN
BASIC
GOLD FIN
UNIT
R22
HFC
R22+AC INV.
HFC+AC
INV.
HFC+DC
INV.
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~28K
10
5
30K~38K
30
12
Pipe Size
Capacity
(Btu/h)
GAS
LIQUID
Max.
Length
A
(m)
Additional
Refrigerant
(g/m)
Max.
Elevation
B
(m)
Standard
Length
(m)
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
1/2"(Ø12.7)
1/4"(Ø6.35)
4 or 7.5
15
30
20
18k~28k
5/8"(Ø15.88)
1/4"(Ø6.35)
4 or 7.5
15
30
20
5/8"(Ø15.88)
3/8"(Ø9.52)
4 or 7.5
15
30
30
30k~38k
5/8"(Ø15.88)
3/8"(Ø9.52)
7.5
15
30
30
3/4"(Ø19.05)
3/8"(Ø9.52)
7.5
15
30
50
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
-29-
4. Checking the Drainage and Forming the Pipings
1) Checking the drainage
1. To remove the front panel from the indoor unit.
• Set the air direction louvers up-and-down to the posi-
tion(horizontally) by hand.
• Remove the securing screws that retain the front pan-
el. Pull the lower left and right sides of the grille
toward you and lift it off.
toward you and lift it off.
2. To check the drainage.
• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of the
• Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the drain
exit.
exit.
3. Drain piping
• The drain hose should point downward for easy drain
flow.
• Do not make drain piping.
2) Form the piping
1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material and
secure it with two kinds of vinyl tapes.
secure it with two kinds of vinyl tapes.
• If you want to connect an additional drain hose, the
end of the drain outlet should be routed above the
ground. Secure the drain hose appropriately.
ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed below
the indoor unit perform the following.
• Tape the piping, drain hose and connecting cable from
down to up.
• Secure the tapped piping along the exterior wall using
saddle or equivalent.
3. In cases where the Outdoor unit is installed above
the Indoor unit perform the following.
• Tape the piping and connecting cable from down to up.
• Secure the taped piping along the exterior wall. Form
• Secure the taped piping along the exterior wall. Form
a trap to prevent water entering the room.
• Fix the piping onto the wall by saddle or equivalent.
Pull the right and
the left side.
the left side.
Taping
Drain
hose
hose
Pipings
Connecting
cable
cable
Trap is required to prevent water
from entering into electrical parts.
from entering into electrical parts.
Seal small openings
around pipings with a
gum type sealer.
around pipings with a
gum type sealer.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
Downward slope
Do not raise
Accumulated
drain water
drain water
Tip of drain hose
dipped in water
dipped in water
Air
Waving
Water
leakage
leakage
Water
leakage
leakage
Ditch
Less than
50mm gap
50mm gap
Water
leakage
leakage