LG AS-H306DGM0(S30AHP-ND6/UD6) User manual

Room Air Conditioner
SVC MANUAL(Exploded View)
MODEL : AS-H306DGM0(S30AHP-ND6/UD6)
LS-C306DGB0(S326GC SD0)
LS-C306DGB0(S306GC SD0)
LS-C306DGM1(S306GP SD1)
LSNC306DGB0.AMBAIDA
LS-H306DGB0(S306GH SD0)
LS-H306DGM1(S326GQ SD1)
LS-H306DGM1(S306GQ SD1)
LS-H306DGM1(S30LHP)
LS-C302DGB1(S302CG SD1)
LS-C302DGM1(S302CP SD1)
LS-C362DGB1(S362CG SD1)
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
LS-C362DGM1(S362CP SD1)
LS-H366DGM1(S366GQ SD1)
LS-H366DGB0(S366GH SD0)
LS-C366DGM1(S366GP SD1)
LS-C366DGB0(S366GC SD0)
LS-C366DGB0(S386GC SD0)
LS-H366DGM1(S386GQ SD1)
LS-H362DGB1(S362HG SD1)
AS-W246DGH0(S25AWN-ND6/UD6)
AS-H366DGM1(S36AHP-ND6/UD6)
AS-H366DGM2(S36AHP-ND7/UD7)

- 2 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name ...............................................................................................................................................3
Safety Precautions..........................................................................................................................................5
Dimensions....................................................................................................................................................10
Symbols Used in this Manual...................................................................................................................10
Indoor Unit................................................................................................................................................10
Product Specifications ................................................................................................................................13
Installation .....................................................................................................................................................16
Selection of the Best Location..................................................................................................................16
Piping Length and Elevation.....................................................................................................................16
How to Fix Installation Plate.....................................................................................................................17
Drill a Hole in the Wall ..............................................................................................................................17
Drain hose junction...................................................................................................................................17
Flaring work and connection of piping .......................................................................................................18
Flaring work..............................................................................................................................................18
Connection of piping -- Indoor..................................................................................................................18
Connection of the pipes-Outdoor .............................................................................................................22
Connecting the cable between indoor unit and outdoor unit ...................................................................23
Connect the cable to the Indoor unit. .......................................................................................................23
Connect the cable to the outdoor unit ......................................................................................................24
Checking the drainage and forming the pipings........................................................................................25
Checking the drainage .............................................................................................................................25
Form the piping ........................................................................................................................................25
AIR PURGING ................................................................................................................................................26
Air purging................................................................................................................................................26
Air purging with vacuum pump .................................................................................................................26
TEST RUNNING .............................................................................................................................................28
Operation .......................................................................................................................................................29
Function of Controls .................................................................................................................................29
Portection from overheating of power module..........................................................................................33
Portection from overheating of compressor .............................................................................................33
Display Function ......................................................................................................................................34
Self-diagnosis Function............................................................................................................................34
Remote Control Operations......................................................................................................................35
Disassembly ..................................................................................................................................................36
Indoor Unit................................................................................................................................................36
Schematic Diagram.......................................................................................................................................39
Electric Control Device.............................................................................................................................39
Wiring Diagram.........................................................................................................................................41
Components Location ..............................................................................................................................50
Troubleshooting Guide .................................................................................................................................54
Refrigeration Cycle Diagram ....................................................................................................................54
2-way, 3-way Valve .................................................................................................................................56
Cycle Parts...............................................................................................................................................62
Electronic Parts ........................................................................................................................................63
Exploded View...............................................................................................................................................70

- 3 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
LG Model Name
LG Model Name
2003
12 - 345678910
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
V: AC Inverter C/O
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" →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
7 Chassis A~Z Name of Chassis of Unit
Ex. LSP →SP Chassis
8 Look A~Z Look,
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

- 4 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
LG Model Name
2004~
12 - 345678910
Code Type Code of Model Meaning
1 Producing Center, A~Z
L Chang_won R22
A Chang_won R410A
C Chang_won R407C
T China
K Turkey R22
E Turkey R410A
H Thailand
N India
Z Brazil
D Indonesia
X Mexico
V Vietnam
S Out sourcing
Refrigerant
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
V: AC Inverter C/O
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" →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
CHASSIS Look
D
K
L
G
M
N
D
P
Division
Panel Type(Deluxe)
Fighting 'Look'
(LG1)
(LG2)-SEMI PANEL
OEM1
OEM2
Panel Type(Deluxe)
LG3
, 50/60Hz
8: 380-415V/50Hz
9: 380-415V/60Hz
7 Chassis A~Z Name of Chassis of Unit
Ex. LSP →SP Chassis
8 Look A~Z Look,
Color (Artcool Model)
9 Function A~Z
10 Serial No. 1~9 LG Model De
* ARTCOOL COLOR
velopment Serial No.
R Mirror
W White
B Blue
D Wood
M Metal
C Cherry
S4/S5
S6
SQ
SR
ST
Basic A
Basic+4Way B
Plasma Filter C
Plasma Filter+4 Way D
Tele+LCD E
Tele+LCD+Nano plasma+4Way F
NBF F+(A/changeove)+A/clean+Low A G
NBF F+(A/changeove)+A/clean+4way+Low A H
Tele+LED+4way I
Internet J
Plasma F+4Way+Oxy generator K
NBF F+(A/changeove)+A/clean L
NBF F+(A/changeove)+A/clean+4way M
NBF F+(A/changeove)+A/clean+PTC N
NBF F+(A/changeove)+Autoclean+4way+PTC P
NBF F+(A/changeove)+A/clean+4way+Low A+PTC Q
(Nano)Plasma+ION+A/Clean S
4way+(Nano)Plasma F+
Negative ION+Healthy dehumidification +A/Clean T
Nano Plasma F+4Way+(A/changeove)+A/clean+Oxy generator U
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator V
Dry contact W
Wire remocon 8

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
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.
Always use the power plug and socket with the
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.
.Do not modify or extend the power cord.
• There is risk of fire of electric shock. • No grounding may cause electric shock.
■Installation

- 6 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
Do not install the product on a defective instal-
lation stand.
Be sure the installation area does not
deteriorate with age.
• It may cause injury, accident, or damage to the
product.
• If the base collapses, the air conditioner could fall
with it, causing property damage, product failure,
and personal injury.
• Sharp edges could cause injury. Be especially care-
ful of the case edges and the fins on the condenser
and evaporator.
• There is risk of fire, electric shock, explosion, or injury.
Be cautious when unpacking and installing the
product.
For installation, always contact the dealer or
an Authorized service center
For re-installation of the installed product,
always contact a dealer or an authorized ser-
vice center.
Do not install, remove, or re-install the unit by
yourself.
• There is risk of fire, electric shock, explosion, or
injury.
• There is risk of fire, electric shock, explosion, or
injury.

- 7 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
■Operation
Do not turn the air-conditioner ON or OFF by
plugging or unplugging the power plug.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock. • There is risk of fire or electrical shock.
Grasp the plug to remove the cord from the
outlet. Do not touch it with wet hands.
Do not place a heater or other appliances near
the power cable.
• There is risk of fire or electrical shock. • There is risk of fire and electric shock.
Do not allow water to run into electrical parts. Do not store or use flammable gas or com-
bustibles near the air conditioner.
• There is risk of fire, failure of the product, or electric
shock.
• There is risk of fire or failure of product.
Wax
Thinner

- 8 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Always check for gas (refrigerant) leakage after
installation or repair of product.
Install the drain hose to ensure that water is
drained away properly.
• Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage.
Keep level even when installing the product. Use two or more people to lift and transport
the air conditioner.
• To avoid vibration or water leakage. • Avoid personal injury.
■Installation
90˚
Unplug the unit if strange sounds, odors, or
smoke comes from it.
Be cautious that water could not enter the
product.
•There is risk of electric shock or fire. •There is risk of fire, electric shock, or product dam-
age.
Safety Precautions

- 9 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Use a soft cloth to clean. Do not use harsh
detergents, solvents, etc.
Do not touch the metal parts of the product
when removing the air filter. They are very
sharp!
•There is risk of fire, electric shock, or damage to the
plastic parts of the product.
•There is risk of personal injury.
Do not step on or put anyting on the product.
(outdoor units)
Do not insert hands or other objects through
the air inlet or outlet while the air conditioner
is plugged in.
•There is risk of personal injury and failure of product. •There are sharp and moving parts that could cause
personal injury.
■Operation
Wax
Safety Precautions

- 10 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
Dimensions
Installation plate
D
H
W
W mm 1209
H mm 346
D mm 205
Model
Dimension
24k~38k Btu Series
Indoor Unit
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Symbols Used in this Manual

Dimensions
- 11 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
MODEL
DIM
W
L7 L6 L8 L9
D
L1
L2
L3
L10L11
L4L5
H
Gas side
3-way valve
Liquid side
2-way valve
W mm 870
H mm 800
D mm 320
L1 mm 370
L2 mm 340
L3 mm 25
L4 mm 775
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54
L10 mm 79
L11 mm 76.4
24k, 30k, 32k Btu Series
• 24k, 30k, 32k Series

- 12 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
L6L7 L8
L9
L4
H
L5
W
D
L1
L3
L2
L10 L11
Gas side
3-way valve
Liquid side
3-way valve
36k, 38k Btu Series
MODEL
DIM
W mm 870
H mm 1038
D mm 320
L1 mm 360
L2 mm 340
L3 mm 25
L4 mm 1035
L5 mm 25
L6 mm 546
L7 mm 160
L8 mm 160
L9 mm 44
L10 mm 75
L11 mm 80
• 36k, 38K Series
Dimensions

Model Name
Item Unit
Cooling Capacity kW
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input Cooling W
Heating
Running Cooling A
Current Heating
E.E.R. Cooling W/W
C.O.P Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant (R410A) g
(R22)
Airflow Direction Control (Up & Down)
Airflow Direction Control (Left & Right)
Chaos Wind
Timer
Self Diagnosis
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
Product Specifications
Product Specifications
Table-1
8.5 8.21 8.21 8.21 6.8
9.08 - 8.8 - 7.5
3.8 3.8 3.8 3.8 3.8
1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V, 60Hz 1Ø, 220V-240V, 50Hz
20/21.5 20 20/21.5 20 20/21.5
58 58 58 58 58
48 48 48 48 46
58 58 58 58 58
3250 3150 3150 3200 1980
3450 - 3440 - 2350
14.7 14.5 14.5 14.5 9
14.9 - 15.5 - 11
2.62 2.6 2.6 2.57 3.43
2.63 - 2.56 - 3.19
55 55 55 55.8 55
88 88 88 82 88
1209*346*205 1209*346*205 1209*346*205 1209*346*205 1209*346*205
870*800*320 870*800*320 870*800*320 870*800*320 870*800*320
18 18 18 18 18
75 75 75 75 75
2450 - - - 1700
- 2400 2400 2500 -
OOOOO
OOOOO
OOOOO
24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/OFF
OOOOO
L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless
1/4"(6.35) 1/4"(6.35) 1/4"(6.35) 1/4"(6.35) 1/4"(6.35)
5/8"(15.88) 5/8"(15.88) 5/8"(15.88) 5/8"(15.88) 5/8"(15.88)
OOOOO
OOOOO
0.75mm2*3, 0.75mm2*3 0.75mm2*3, 0.75mm2*2 0.75mm2*3, 0.75mm2*3 0.75mm2*3, 0.75mm2*2 0.75mm2*3, 0.75mm2*2
2.5mm2*3 2.5mm2*3 2.5mm2*3 2.5mm2*3 2.5mm2*3
AS-H306D
SERIES
LS-C306D
SERIES
LSNC306DGB0.
AMBAIDA
LS-H306D
SERIES
LS-C302D
SERIES AS-W246DGH0
- 13 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only

- 14 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Model Name
Item Unit
Cooling Capacity kW
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input Cooling W
Heating
Running Cooling A
Current Heating
E.E.R. Cooling W/W
C.O.P Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant (R410A) g
(R22)
Airflow Direction Control (Up & Down)
Airflow Direction Control (Left & Right)
Chaos Wind
Timer
Self Diagnosis
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
Table-2
9.97 10.55 10.55 10.55 10.00
- 10.55 - 10.55 10.25
4.2 4.2 4.2 4.2 4.2
1Ø, 220V, 60Hz 1Ø, 220V-240V, 50Hz 1Ø, 220V-240V, 50Hz 1Ø,220V,60Hz 1Ø,220V-240V,50Hz
22 22 22 22 25
64 64 64 64 58
51 51 51 51 51
60 60 60 60 60
3750 4200 4200 3700 3650
- 3900 - 3900 3600
17.5 19 19 17 16
- 18 - 18 16
2.66 2.51 2.51 2.85 2.73
- 2.69 - 2.71 2.85
77.2 76.1 76.1 77.2 76.1
41 41 41 41 41
1209*346*205 1209*346*205 1209*346*205 1209*346*205 1209*346*205
870*1038*320 870*1038*320 870*1038*320 870*1038*320 870*1038*320
19 19 19 19 19
80 80 80 80 80
- - - - 2600
2650 2660 2660 2600 -
OOOOO
OOOOO
OOOOO
24Hr On/OFF 24Hr On/OFF 24Hr On/OFF 24Hr On/Off 24Hr On/OFF
OOOOO
L.C.D wireless L.C.D wireless L.C.D wireless L.C.D wireless L.C.D Wireless
3/8"(9.52) 3/8"(9.52) 3/8"(9.52) 3/8"(9.52) 3/8"(9.52)
5/8"(15.88) 5/8"(15.88) 5/8(15.88) 3/4"(19.05) 3/4"(19.05)
OOOOO
OOOOO
0.75mm2*3, 0.75mm2*2 0.75mm2*3, 0.75mm2*2 0.75mm2*3, 0.75mm2*2 0.75mm2*3, 0.75mm2*2 0.75mm*3,0.75mm*3
3.5mm2*3 3.5mm2*3 3.5mm2*3 3.5mm2*3 3.5mm*3
LS-C362D
SERIES
LS-H366D
SERIES
LS-C366D
SERIES
LS-H362D
SERIES AS-H366DGM1
Product Specifications

- 15 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Model Name
Item Unit
Cooling Capacity kW
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input Cooling W
Heating
Running Cooling A
Current Heating
E.E.R. Cooling W/W
C.O.P Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant (R410A) g
(R22)
Airflow Direction Control (Up & Down)
Airflow Direction Control (Left & Right)
Chaos Wind
Timer
Self Diagnosis
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
Table-3
9.3
10.15
4.2
1_,220V-240V,50Hz
25
58
51
60
3680
3700
16
16
2.53
2.74
76.1
41
1209*346*205
870*1038*320
19
80
2600
-
O
O
O
24Hr On/OFF
O
L.C.D Wireless
3/8"(9.52)
3/4"(19.05)
O
O
0.75mm*3, 0.75mm*3
3.5mm*3
AS-H366DGM2
Product Specifications

- 16 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Installation
Installation
Indoor unit
•Do not have any heat or steam near the unit.
•Select a place where there are no obstacles in front of the
unit.
•Make sure that condensation drainage can be conveniently
routed away.
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.
•Use a stud finder to locate studs to prevent unnecessary
damage to the wall.
Outdoor unit
•If an awning is built over the unit to prevent direct sunlight
or rain exposure, make sure that heat radiation 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.
•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.
Rooftop Installations:
•If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
•Consult local codes regarding rooftop mounting.
More than "B"
More than
"A"
More than 2.3m
More than
"A"
•Capacity is based on standard length and maxi-
mum allowance length is on the basis of reliability.
•Oil trap should be installed every 5~7 meters.
Grade Clearance(cm)
AB
24K, 30~38K 30 12
Pipe Size
Capacity
(Btu/h) GAS LIQUID
Max.
Length
A (m)
Additional
Refrigerant
(g/m)
Max.
Elevation
B(m)
Standard
Length
(m)
30k~32k 5/8"(Ø15.88) 1/4"(Ø6.35) 7.5 15 30 40
36k~38k 5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 40
3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 40
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
Selection of the Best Location
Piping Length and Elevation
Install the indoor unit on the wall where the height
from the floors more than 2.3 meters.
More than 10cm More than 10cm
More
than 60cm
More than 60cm
More than 70cm

- 17 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Installation
The wall you select should be strong and solid
enough to prevent vibration
1. Mount the installation plate on the wall with four
type A screws. If mounting the unit on a concrete
wall, use anchor bolts.
•Mount the installation plate horizontally by aligning
the centerline using a level.
2. Measure the wall and mark the centerline. It is
also important to use caution concerning the
location of the installation plate-routing of the
wiring to power outlets is through the walls typi-
cally. Drilling the hole through the wall for pip-
ing connections must be done safely.
•Drill the piping hole with a ø70mm hole core drill.
Drill the piping hole at either the right or the left
with the hole slightly slanted to the outdoor side.
•Open the Front Grille.
•Pass Telephone Control Cord Wire through the hole
which the power cord goes through.
•Connect Telephone Control Cord Wire to the phone jack
of telephone PCB of Control Box.
•Fix Telephone Control Cord Wire inside Control box so
as not to disconnect.
•Close the Front Grille.
How to Fix Installation Plate Drill a Hole in the Wall
Drain hose junction
•Remove the rubber stopple in the desired drain direc-
tion.
•Insert drain hose into the handle of drain pan, and join
drain hose and connecting hose according to the figure
by.
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Connecting
part
Adhesive
Drain
hose
Only the
desired direction
Type "A" screw
Installation Plate
Installation plate
Left rear piping Right rear piping
CD
B
A
Chassis
Hook
ABCD
SD(24k, 30~38k) 120 110 43 43
CHASSIS
(Grade)
Distance (mm)

- 18 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Flaring work and connection of piping
Flaring work and connection of piping
Flaring work
Flaring work
Main cause for refrigerant leakage is due to defect in the
flaring work. Carry out correct flaring work using the follow-
ing procedure.
Cut the pipes and the cable.
•Use the piping kit accessory or pipes purchased locally.
•Measure the distance between the indoor and the outdoor unit.
•Cut the pipes a little longer than the measured distance.
•Cut the cable 1.5m longer than the pipe length.
Check
•Compare the flared work with figure below.
•If flare is noted to be defective, cut off the flared sec-
tion and re-flare it.
•Preparing the indoor unit's piping and drain hose for instal-
lation through the wall.
•Remove the plastic tubing retainer(see illustration below)
and pull the tubing and drain hose away from chassis.
•Replace the plastic tubing holder in the original
position.(Optional)
•Carry out flaring work using flaring tool as shown below.
Burr removal
•Completely remove all burrs from the cut cross section of
pipe/tube.
•Put the end of the copper tube/pipe in a downward direc-
tion as you remove burrs in order to avoid dropping burrs
into the tubing.
Putting nut on
•Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr removal.
(not possible to put them on after flaring work)
Flaring work
•Firmly hold copper pipe in a die in the dimension shown in
the table above.
Copper
pipe
90°Slanted Uneven Rough
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Pipe
Reamer
Point down
Flare nut
Copper tube
Drain hose
mm inch mm
Ø6.35 1/4 0~0.5
Ø9.52 3/8 0~0.5
Ø12.7 1/2 0~0.5
Ø15.88 5/8 0~1.0
Ø19.05 3/4 1.0~1.3
Outside diameter A
Connection of piping -- Indoor
When install, make sure that the
remaining parts must be removed
clearly so as not to damage the pip-
ing and drain hose, especially power
cord and connecting cable.

- 19 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
Ø12.7 1/2 5.5
Ø15.88 5/8 6.6
Ø19.05 3/4 6.6
Outside diameter Torque
Flaring work and connection of piping
Route the indoor tubing and the drain hose in the direction of
rear right.
Drain hose
Connecting
cable
Vinyl tape(narrow)
Connection
pipe
Connecting cable
Vinyl tape
(wide) Wrap with vinyl tape
Indoor
unit pipe
Pipe
Plastic bands Insulation material
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
Indoor unit tubing Flare nut Pipes
Connecting
pipe
Connecting cable
Tape
Drain hose
Drain hose
Insert the connecting cable into the indoor unit from the out-
door unit through the piping hole.
•Do not connect the cable to the indoor unit.
•Make a small loop with the cable for easy connection later.
Tape the tubing, drain hose, and the connecting cable. Be
sure that the drain hose is located at the lowest side of the
bundle. Locating at the upper side can cause drain pan to
overflow inside the unit.
NOTE: If the drain hose is routed inside the room, insulate
the hose with an insulation material* so that dripping from
"sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Indoor unit installation
•Hook the indoor unit onto the upper portion of the installa-
tion plate.(Engage the two hooks of the rear top of the
indoor unit with the upper edge of the installation plate.)
Ensure that the hooks are properly seated on the installa-
tion plate by moving it left and right.
Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their slots(click-
ing sound).
Connecting the pipings to the indoor unit and
drain hose to drain pipe.
•Align the center of the pipes and sufficiently tighten
the flare nut by hand.
•Tighten the flare nut with a wrench.
•When extending the drain hose at the indoor unit, install the
drain pipe.
Wrap the insulation material around the con-
necting portion.
•Overlap the connection pipe insulation material and the
indoor unit pipe insulation material. Bind them together with
vinyl tape so that there is no gap.
•Wrap the area which accommodates the rear piping hous-
ing section with vinyl tape.
For right rear piping

- 20 -
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Flaring work and connection of piping
•Bundle the piping and drain hose together by wrapping
them with vinyl tape for enough to cover where they fit into
the rear piping housing section.
Connecting the pipings to the indoor unit and
the drain hose to drain pipe.
•Align the center of the pipes and sufficiently tighten the
flare nut by hand.
•Tighten the flare nut with a wrench.
•When extending the drain hose at the indoor unit, install the
drain pipe.
Wrap the insulation material around the con-
necting portion.
•Overlap the connection pipe heat insulation and the indoor
unit pipe heat insulation material. Bind them together with
vinyl tape so that there is no gap.
Route the indoor tubing and the drain hose to
the required piping hole position.
Insert the piping, drain hose, and the connect-
ing cable into the piping hole.
Insert the connecting cable into the indoor unit.
•Don't connect the cable to the indoor unit.
•Make a small loop with the cable for easy connection later.
Indoor unit installation
•Hang the indoor unit from the hooks at the top of the instal-
lation plate.
•Insert the spacer etc. between the indoor unit and the
installation plate and separate the bottom of the indoor unit
from the wall.
Tape the drain hose and the connecting cable.
•Connecting cable
Drain pipe
Connecting cable
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
Indoor unit tubing Flare nut Pipes
Installation plate
Spacer
Indoor unit
8cm
Plastic bands Insulation material
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
Wrench
Indoor unit tubing
Connection pipe
Flare nut
Open-end wrench (fixed)
For left rear piping
mm inch kg.m
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
Ø12.7 1/2 5.5
Ø15.88 5/8 6.6
Ø19.05 3/4 6.6
Outside diameter Torque