Ceiling Cassette Air Conditioner SVC MANUAL ... - Jordans Manuals

Internal Use Only
http://biz.lgservice.com
Ceiling Cassette Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LT-E1820CL/LT-E1820HL
LT-E1860CL/LT-E1860HL
LT-E1860AA
LT-E1862HL/BA
LT-E2460CL/LT-E2460HL
LT-E2460BL
LT-E2462HL/LT-E2462CL/BA
LT-E2460AA
LT-C182ELE0/LT-H182ELE0
LT-H246ELE0/ELF0
LT-C246ELE0/ELF0
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.

Contents
Functions .................................................................................................................................3
Product Specifications (Cooling & Heating) ..........................................................................7
Dimensions ..............................................................................................................................9
Refrigeration Cycle Diagram ................................................................................................12
Wiring Diagram ......................................................................................................................14
Operation Details ...................................................................................................................17
Installation of Indoor, Outdoor Unit .....................................................................................20
Cycle .......................................................................................................................................38
Cycle Troubleshooting Guide ...............................................................................................41
Electronic Parts Troubleshooting Guide .............................................................................42
Electronic Control Device .....................................................................................................45
Schematic Digram ..................................................................................................................46
Exploded View ........................................................................................................................47
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 2 -
LGE Internal Use Only

Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
• Room temperature sensor. (Thermistor)
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• Jet, High, Med, Low
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
Auto Restart
• Although the air-conditioner is turned off by a power failure, it is restarted automatically
previous operation mode after power supply.
• The setting temperature and desired operation mode are automatically
set by fuzzy
Auto Operation(Auto Change Over)
logic.
Deice (defrost) control (Heating)
Hot-start Control (Heating)
Compact and light design
Low noise
Long life filter
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.
• The indoor fan stops until the evaporator piping temperature
will be reached at 28°C.
• To install a unit is very convenient because of smaller size
than textile. ( 600 x 600 )
• The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger
give the quietest operation.
• Long life wrinkle(type) and washable and anti-bacteria filter
is adopted.
Plasma Air Purifying Filter(2HL Only)
High head Drain pump
High-Ceiling corresponding Function
Central Control(Optional)
Group Control(Optional Wiring)
Elevation Grille (Optional)
• Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm is possible.
• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
• It is operating individually or totally by central control function.
• Each controller can control 16 units and 8 controllers can be
connected.
• It operates maximum 16 units by only one wired remote controller
and each unit starts sequentially to prevent overcurrent.
• Auto Elevation Grille is automatically down to height of max 3m.
So it enables to install the indoor unit at high celling space and
Auto Elevation Grille makes you clean the filter easily.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 3 -
LGE Internal Use Only

Remote Controller
Operation ON/OFF
Operation Mode Selection
(Cooling
model only)
(Heating
model only)
Cooling Operation Mode ( ) Soft Dry Operation Mode ( )
Heating Operation Mode ( ) Auto Operation Mode ( )
Fan Speed Selection
LO
MED
(Low) (Med) (High)
HI JET AUTO
Room Temperature Display
: High:39°C ↔ LOW:11°C
Temperature Setting
Cooling
Down to 18°C
Up to 30°C
Heating
Down to 16°C
Up to 30°C
Setting the Timer
Timer
Cancel
Weekly Program
Program
Week
Holiday
SET/CLR
: Fan Operates without cooling & heating
Hour
Min
Fan Operation Mode
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 4 -
LGE Internal Use Only

■ ELEVATION GRILL (REMOTE CONTROLLER_Accessory)
Signal transmitter
Ascend
Descend
• Main Components of Lift Grill
➀ Lift grill front panel assembly
➁ Bolts for installation (4 EA, P/No. 3A00255K)
➂ Instruction manual
➃ Remote Controller for lift grill
Stop
• How to Use Remote Controller
As for operation of Remote Controller, use it by directing the transmitter
part of Remote Controller to the receiver part of front panel
directly under front panel.
• Do not drop it down or into water. Or else there is worry about
trouble failure.
• Do not press hard the Remote Controller button with nail (ballpoint
pen or other sharp substance). Or else there is worry
about trouble failure.
• In case when obstacle such as curtain hides the signal reception
part of receiver in between the space interval, Remote Controller
operation is infeasible.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 5 -
LGE Internal Use Only

• How to Operate the Lift Grill
• Always stop the air conditioner operation for safety before operating lift grill.
• Take heed _ there is worry about dust fall etc. when suction grill descends.
• In case when the set automatic stop distance goes wrong, check the set value of operation panel and confirm
if there is neither obstacle nor mankind.
• When you are not to remove obstacle, stop the operation before touching the obstacle.
1. Stop the Air Conditioner Operation
Automatic Stop Distance of Grill
2. Descend the Suction Grill
- Depress the down button( ).
Then suction grill descends and stops automatically at a certain
distance.
- You may stop it at wanted distance point by depressing the stop button
( ) when descending.
3. Raise the Suction Grill
- Depress the up button( ).
Then suction grill goes up and enters into the front panel.
Automatic stop distance
4. Stop the Suction Grill during Rising
- Depress the stop button( ).
Make use of this when you want to stop it at your wished position.
Ceiling height
Low
Medium
(Height: 3~4 m)
High
Automatic stop distance 1.5±0.5 m 2.5±0.5 m 3.5±0.5 m
✳ If you want to change automatic distance setting,
consult with your sale agency.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 6 -
LGE Internal Use Only

Product Specifications (Cooling & Heating)
Model
Power Supply
ø, V, Hz
Capacity Cooling kcal/h(W)
Btu/h
Heating
kcal/h(W)
Btu/h
Input Cooling W
Heating
W
Running Current Cooling A
Heating
A
Starting Current Cooling A
Heating
A
E.E.R
kcal/h(W)
C.O.P
W/W
Air Circulation Indoor m 3 /min
Outdoor
m 3 /min
Moisture Removal
l / h
Air-Flow Direction Control
Heating Operation Mode
Fan Speeds (steps)
Auto Operation (Changeover)
Forced Operation
Jet Cool
Soft Dry Operation
Timer Delay Safety Function
Feature
Air Deflection (Way)
Self Diagnosis
Hot start
Auto Restart
Air refresh (Hole)
High Ceiling
Group Control (Optional wiring)
Central Control
Wired remote controller (with weekly Program)
Plasma A/Cleaner
Refrigerant(R-22) Charge
g
Dimensions Indoor mm
(W x D x H) Panel mm
Outdoor
mm
Net Weight Indoor kg
Outdoor
kg
Main Power Cord AWG#:P*mm 2
Connection Cable AWG#:P*mm 2
Service Valve Liquid (inch)
Gas
(inch)
Installation Pipe Length (m)
Elevation
(m)
Insulation(material/thickness)
Drain Hose(I.D/O.D)
mm
LT-E2460AA LT-E1860CL LT-E1860HL LT-E1862HL
LT-E1862BA
1, 220-240, 50
4,536(5,274)
18,000
-
-
1,900
-
9.5
-
53
-
2.39
-
13
50
1.9
O
X
4
O
O
O
O
O
4
O
X
O
O
O
O
Optional
O
O
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
60
14:3*2.5
18:4*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
1, 220-240, 50
4,536(5,274)
18,000
-
-
1,900
-
9.5
-
53
-
2.39
-
13
50
1.9
O
X
4
O
O
O
O
O
4
O
X
O
O
O
O
Optional
O
X
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
60
14:3*2.5
18:4*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
1, 220-240, 50
4,536(5,274)
18,000
4,536(5,274)
18,000
2,050
1,850
9.5
9.0
53
53
2.21
2.85
13
50
1.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
X
1,800
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
61
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
1, 220-240, 50
4,536(5,274)
18,000
4,536(5,274)
18,000
2,050
1,850
9.5
9.0
53
53
2.21
2.85
13
50
1.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
O
1,800
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
61
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
LT-E1820CL
LT-C182ELE0
1, 220, 60
4,536(5,274)
18,000
-
-
1,970
-
9
-
53
-
2.30
-
13
50
1.9
O
X
4
O
O
O
O
O
4
O
X
O
O
O
O
Optional
O
X
1,050
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19
60
14:3*2.5
18:4*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
LT-E1820HL
LT-H182ELE0
1, 220, 60
4,536(5,274)
18,000
4,536(5,274)
18,000
1,900
1,900
8.8
8.8
53
53
2.39
2.78
13
50
1.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
X
1,910
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19
61
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 7 -
LGE Internal Use Only

Model
Power Supply
ø, V, Hz
Capacity Cooling kcal/h(W)
Btu/h
Heating
kcal/h(W)
Btu/h
Input Cooling W
Heating
W
Running Current Cooling A
Heating
A
Starting Current Cooling A
Heating
A
E.E.R
kcal/h(W)
C.O.P
W/W
Air Circulation Indoor m 3 /min
Outdoor
m 3 /min
Moisture Removal
l / h
Air-Flow Direction Control
Heating Operation Mode
Fan Speeds (steps)
Auto Operation (Changeover)
Forced Operation
Jet Cool
Soft Dry Operation
Timer Delay Safety Function
Feature
Air Deflection (Way)
Self Diagnosis
Hot start
Auto Restart
Air refresh (Hole)
High Ceiling
Group Control (Optional wiring)
Central Control
Wired remote controller (with weekly Program)
Plasma A/Cleaner
Refrigerant(R-22) Charge
g
Dimensions Indoor mm
(W x D x H) Panel mm
Outdoor
mm
Net Weight Indoor kg
Outdoor
kg
Main Power Cord AWG#:P*mm 2
Connection Cable AWG#:P*mm 2
Service Valve Liquid (inch)
Gas
(inch)
Installation Pipe Length (m)
Elevation
(m)
Insulation(material/thickness)
Drain Hose(I.D/O.D)
mm
LT-E2460CL
LT-C246ELE0
1, 220-240, 50
5,871(6,827)
23,300
-
-
2,600
-
13.5
-
62
-
2.26
-
15.5
50
2.9
O
X
4
O
O
O
O
O
4
O
X
O
O
O
O
Optional
O
X
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
61
14:3*2.5
18:4*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
LT-E2460HL LT-E2460BL LT-E2462HL/BL
LT-H246ELE0/ELF0
1, 220-240, 50
5,871(6,827)
23,300
5,922(6,886)
23,500
2,600
2,600
13.5
13.5
62
60
2.26
2.65
15.5
50
2.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
X
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
62
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
1, 220-240, 50
5,871(6,827)
23,300
5,922(6,886)
23,500
2,600
2,600
13.5
13.5
62
60
2.26
2.65
15.5
50
2.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
X
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
62
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
1, 220-240, 50
5,871(6,827)
23,300
5,922(6,886)
23,500
2,600
2,600
13.5
13.5
62
60
2.26
2.65
15.5
50
2.9
O
O
4
O
O
O
O
O
4
O
O
O
O
O
O
Optional
O
O
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
62
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
LT-E2462CL
LT-E2460AA
1, 220-240, 50
5,871(6,827)
23,300
-
-
2,600
-
13.5
-
62
-
2.26
-
15.5
50
2.9
O
X
4
O
O
O
O
O
4
O
X
O
O
O
O
Optional
O
O
1,900
570 x 570 x 269
670 x 670 x 30
870 x 655 x 320
19(16.5+2.5)
61
14:3*2.5
18:6*0.75
1/4(6.35mm)
5/8(15.88mm)
50
30
FoamPE/5mm
ø25/32
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 8 -
LGE Internal Use Only

CLOSE OPEN OPEN CLOSE
Dimensions
(1) Indoor Unit
670
269
670
670
570
670
521
55
570
450
40
269
120.4 30
90
110 110
90
52
160
190.5
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 9 -
LGE Internal Use Only

LT-H***ELE0
LT-H***FLE0
LT-H***DLE0
W
H
D
(unit : mm)
DIM
Model
Unit
LT-H***ELE0 LT-H***FLE0 LT-H***DLE0
W mm 670 850 950
H mm 90 90 90
D mm 670 850 950
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 10 -
LGE Internal Use Only

(2) Outdoor Unit
W
L5 L4
L3
D
L2
L7 L6
L8 L9
L1
L11
L10
Gas side
3-way valve
Liquid side
3-way valve
DIM
MODEL
All Models
W mm 870
H mm 655
D mm 320
L1 mm 370
L2 mm 25
L3 mm 340
L4 mm 630
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54
L10 mm 74.5
L11 mm 79
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 11 -
LGE Internal Use Only

Refrigeration Cycle Diagram
• HEAT PUMP
INDOOR UNIT
OUTDOOR UNIT
ACCUM.
H/EX
CAPI A
H/EX
Liquid Gas Side
VALVE REVERSING
CAPI C1
Heating
Cooring
CAPI C2
(
COMPRESSOR
Liquid Gas Side
CAPI B
Capacity
Pipe Size
GAS
LIQUID
Length (m)
Rated
Max.
Elevation (m)
Rated
Max.
* Additional
refrigerant
(g/m)
18K 5/8" 1/4" 7.5 50 5 30 25
24K 5/8" 1/4" 7.5 50 5 30 30
• Rated performance for refrigerant line length of: 7.5m
• If 18K Capacity is installed at a distance of 15m, 187.5g of refrigerant
should be added ....................................................(15-7.5)x25g
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 -
LGE Internal Use Only

• COOLING ONLY
INDOOR UNIT
OUTDOOR UNIT
H/EX
CAPI A
H/EX
Gas Side
COMPRESSOR
ACCUM.
CAPI C1
CAPI C2
Liquid Side
CAPI B
Capacity
Pipe Size
GAS
LIQUID
Length (m)
Rated
Max.
Elevation (m)
Rated
Max.
* Additional
refrigerant
(g/m)
18K 5/8" 1/4" 7.5 50 5 30 25
24K 5/8" 1/4" 7.5 50 5 30 30
• Rated performance for refrigerant line length of: 7.5m
• If 18K Capacity is installed at a distance of 15m, 187.5g of refrigerant
should be added ....................................................(15-7.5)x25g
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 13 -
LGE Internal Use Only

Wiring Diagram
• HEAT PUMP
Model No.: LT-E1862HL/ LT-E1862BA/ LT-E2462HL
LT-E2462BA/ LT-E2460BL/ LT-H182ELEO/LT-H246ELE0/LT-H246ELF0
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
FUSE 5A
BR
R
COMP S
BL
FUSE 5A
BL
C
POWER
RELAY
POWER
INPUT
GN/YL
BL
RD
BR
4
2
BR
BL
CAPACITOR
H C F
8
6
BL
BL
1
0
GN/YL
RD
YL
OR
BK
TO INDOOR UNIT
REVERSING
VALVE
BK
FAN
MOTOR
BK
TB2
1(L) 2(N) 3(L) 4(N) 5 6 7 8
TERMINAL
BLOCK
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
TERMINAL
BLOCK
BR
BL
GN/YL
RD
BK
YL
DOOR S/W
FUSE T3.15A
COMP
BK
RD
WH
BR
INDOOR
MOTOR
YL
BK
OR
H.V. ASSY
OUT FAN
4 WAY
RD
BK
GN/YL
DRAIN
PUMP
BL
AIR
CLEANER
BL
STEP
MOTOR
CN - DISP
TEMP.
THERMISTOR
DISPLAY PCB
Only for LT-Exxx2HL
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
LT-E2460HL(Australia only)
OUTDOOR WIRING DIAGRAM
BR
FUSE 5A
BR
R
COMP S
BL
FUSE 5A
C
BL
POWER
RELAY
POWER
INPUT
GN/YL
RD
BR
4
2
YL
BR
BL
8
6
BL
BL
CAPACITOR
H C F
BL
S/CAPACITOR
BL
1
0
WH
3 3
4 4
RY- RY-
COMP S/CAPA
CN-POWER
GN/YL
RD
TO INDOOR UNIT
YL
YL
OR
BK
REVERSING
VALVE
BK
FAN
MOTOR
BK
TB2
1(L) 2(N) 3(L) 4(N) 5 6 7 8
TERMINAL
BLOCK
3854A20119A
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 14 -
LGE Internal Use Only

• HEAT PUMP
Model No.: LT-E1860HL/ LT-E2460HL/
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
INDOOR
MOTOR
YL
BK
OR
GN/YL
DRAIN
PUMP
BL
BL
STEP
MOTOR
TEMP.
THERMISTOR
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
BR
BL
GN/YL
RD
BK
YL
FUSE T3.15A
BK
RD
COMP
WH
OUT FAN
4 WAY
CN - DISP
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
TERMINAL
BLOCK
DOOR S/W
H.V. ASSY
RD
BK
AIR
CLEANER
DISPLAY PCB
Only for LT-Exxx2HL
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 15 -
LGE Internal Use Only

• COOLING ONLY
Model No.: LT-E1860CL/LT-E1860AA/LT-C182ELE0
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
INDOOR
MOTOR
YL
BK
OR
GN/YL
DRAIN
PUMP
BL
BL
STEP
MOTOR
TEMP.
THERMISTOR
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
BR
BL
GN/YL
RD
FUSE T3.15A
COMP
CN - DISP
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
TERMINAL
BLOCK
DISPLAY PCB
Model No.: LT-E2460CL/LT-E2462CL/LT-E2460AA/LT-C246ELE0
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
FUSE 5A
BR
R
COMP S
BL
FUSE 5A
BL
C
POWER
RELAY
GN/YL
BL
RD
BR
4
2
BR
BL
CAPACITOR
H C F
8
6
BL
BL
1
0
GN/YL
RD
YL
OR
BK
FAN
MOTOR
TB2
1(L) 2(N) 3(L) 4(N) 5 6 7 8
POWER
INPUT
TO INDOOR UNIT
BK
TERMINAL
BLOCK
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
TERMINAL
BLOCK
BR
BL
GN/YL
RD
YL
DOOR S/W
FUSE T3.15A
COMP
RD
BK
WH
BR
INDOOR
MOTOR
YL
BK
OR
H.V. ASSY
OUT FAN
RD
BK
GN/YL
DRAIN
PUMP
BL
BL
AIR
CLEANER
STEP
MOTOR
LT-E 2HL ONLY
***
CN - DISP
TEMP.
THERMISTOR
DISPLAY PCB
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 16 -
LGE Internal Use Only

■ ELEVATION GRILL WIRING DIAGRAM (INDOOR)
LT-H***DLE0/LT-C***DLE0
LT-H***ELE0/LT-C***ELE0
LT-H***FLE0/LT-C***FLE0
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 17 -
LGE Internal Use Only

Operation Details
(1) The function of main control
1. Time Delay Safety Control
• 3min The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
• 5sec Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind.
• 30sec The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Auto Swing Control
• This function is to swing the louver up and down automatically.
3. Air-Filter Checking Control
• 'Filter' will display in the remote controller display and main body display when an air-filter is polluted. Then clean
the air-filter for reference to Owners Manual.
4. Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
5. Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller
and the operation diagram is as following
Intake Air temp.
SET TEMP.+0.5°C
(COMP. ON)
SET TEMP. -0.5°C
(COMP. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
INDOOR FAN Low Low
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 18 -
LGE Internal Use Only

6. Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows.
Intake Air temp.
minimum 3min
Setting temp.+3°C
(Compressor OFF)
A
B
A
Setting temp.
(Compressor ON)
1min
minimum
10sec.
minimum
1min.
minimum
10sec.
INDOOR FAN
(Hot Start)
Selected
Low
Low OFF Low
Selecting fan
Low OFF
OFF
Fan Speed
speed
COMPRESSOR ON OFF ON OFF
A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when
it becomes lower than 40˚C fan stops.
B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at selected fan
speed, when it becomes lower than 39°C, the fan operates at low speed.
7. Hot-Start Control
• The indoor fan stops until the evaporator piping temperature reaches to 25°C.
• If the evaporator piping temperature drops below 22°C, indoor fan stops again.
• The operation diagram is as follows.
PIPING
TEMPERATURE
25°C
1min
22°C
INDOOR FAN
OFF
LOW
Selected
fan speed
COMPRESSOR
ON
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 19 -
LGE Internal Use Only

8. Defrost Control (18k, 24k)
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to
cooling cycle to defrost the evaporator pipe of the outdoor unit.
• Defrost control is available 45 min. later since heating mode operation started, and it will not prolong over 10 min.
• Defrost control is carried out according to the following priority order while in heating mode operation.
1st priority : Defrost control is carried out according to the indoor pipe temp 60 min. later since heating mode operation
started.
2nd priority : The temp differences between the indoor pipe temp and the intake air temp 25 min. later(∆T1) and 45
min. later (∆T2) since heating mode operation started are measured, then defrost control is carried out
according to the dirrerence (∆T=∆T1-∆T2)
3rd priority : Defrost control is carried out according to the temp difference (E=TE1-TE2) between the indoor pipe
temperatures of 25 min later(TE1) and 45 min later (TE2) after heating mode operation started.
• When the indoor pipe temp is 41°C or above, defrost control is not carried out even if the condition is one of the
defrost conditions above.
• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.
The outdoor
piping Temp.
12°C OFF
More than 45 minutes
of heating operation
Within
9min. 45sec.
More than 45 minutes
of heating operation
More than 10 min.
running of compressor
-6°C ON
HOT-
START
INDOOR FAN
ON
OFF
ON
COMPRESSOR
ON
4-WAY VALVE
ON
OFF
ON
9. Self-diagnosis Function
• 'CHECK' will flash in the remote controller display when a problem occurs.
• Correct the (fault messages) as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
Remote controller LCD
CH 01
CH 02
CH 03
CH 04
FAULT MESSAGES
Indoor room temperature thermistor error
Indoor piping thermistor error
Indoor main body / Remote controller unit communication error
Water level float switch error
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 20 -
LGE Internal Use Only

Installation of Indoor, Outdoor Unit
1. Selection of the best location
1) Indoor unit
• There should not be any heat source or steam
near the unit.
• There should not be any obstacles to the air circulation.
• A place where air circulation in the room will be
good.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken into consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from the
wall, ceiling, or other obstacles.
• The indoor unit must have the maintenance
space around.
Ceiling
Ceiling Board
50 or
more
100
or more
Above 250
330 or less
Floor
30 or more
Ceiling Board
50 or
more
Unit:cm
30 or less
2) Outdoor unit
• If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat
radiation from the condenser is not restricted.
• There should not be any animals or plants which
could be affected by hot air discharged.
• Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
More than
30cm
Fence or
obstacles
Sunroof
More than
30cm
More than 50cm
More than 70cm
3) Piping length and the elevation
CAPACITY
Pipe Size
GAS
LIQUID
Length A (m)
Rated
Max.
Elevation B (m)
Rated
Max.
18K Btu/h 5/8" 1/4" 7.5 50 5 30 25
24K Btu/h 5/8" 1/4" 7.5 50 5 30 30
• Rated performance for refrigerant piping length: 7.5m
• If 18K Model is installed at a distance of 15m, 187.5g of
refrigerant should be added (15-7.5)x25g
* Additional
refrigerant
(g/m)
Indoor unit
B
A
Outdoor unit
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 21 -
LGE Internal Use Only

2. Ceiling opening dimensions and hanging bolt location
• The dimensions of cardboard for installing are the
same as those of the ceiling opening dimensions.
600 (Ceiling opening)
39.5
521(Hanging bolt) 39.5
Ceiling
CAUTION
Level gauge
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level gauge.
• During the installation, be careful not to damage
electric wires.
570 Unit size
570 Unit size
450 (Hanging bolt) 75
75
600 (Ceiling opening)
Unit:mm
• Select and mark the position for fixing bolts and piping hole.
• Decide the position for fixing bolts slightly tilted to the drain
direction after considering the direction of drain hose.
• Drill the hole for anchor bolt on the wall.
Ceiling board
NOTE:
• Avoid the following installation location.
1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated.
These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
In these cases, take the following actions;
• Make sure that ventilation fan is enough to cover all noxious gases from this place.
• Ensure enough distance from the cooking room to install the air conditioner in such a place where it may
not suck oily steam.
Air conditioner
Take enough
distance
Cooking table
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
3. Avoid places where inflammable gas is generated.
4. Avoid place where noxious gas is generated.
5. Avoid places near high frequency generators.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 22 -
LGE Internal Use Only

3. The Indoor Unit Installation
Ceiling
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Keep the length of the bolt
from the bracket to 40mm
Flat washer for M10
(accessory)
Ceiling board
Air Conditioner body
150mm
Ceiling board
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
Cardboard
for installation
Adjust the same height
Set screw of
cardboard (4 pieces)
Open the ceiling board
along the outer edge of the
paper model
• The following parts are local purchasing.
Hanging Bolt - W 3/8 or M10
Nut
- W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
CAUTION
• Tighten the nut and bolt to prevent the unit from
falling off.
• Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø 70 hole-core drill.
Indoor
Wall
Outdoor
5~7mm
4. Remote Controller Installation
• Although the room temperature sensor is in the indoor unit, the remote controller should be installed
in such places away from direct sunlight and high humidity.
Installation of the remote controller
• Select places that are not splashed with water.
• Select control position after discussion with customer.
• The room temperature sensor is built in the indoor unit.
• This remote controller is equipped with liquid crystal display. If this position is higher or lower, display is difficult
to see.(The standard height is 1.2 ~ 1.5m high)
Routing of the remote controller cord
• Keep the remote controller cord away from the refrigerant piping and the drain piping.
• To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power
cables (audio equipment, television set, etc.)
• If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water
droplets from running to the controller.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 23 -
LGE Internal Use Only

WIRED REMOTE CONTROL INSTALLATION
DISASSEMBLING
Front case
• Separate the under plate from Remote control box.
The lower part
Lever carefully
the box open
using a screw
driver, etc.
Remote control
box body
• Fix the under plate on the wall
Face of wall
Under plate
• Fix the cord clamps on the wall by ø 3 tapping
screws (accessory).
• Fix the remote control cord.
Cord clamp
(accessory)
Screw (accessory)
ELECTRICAL WIRING
(Main board)
CN REMO
Remote controller
REMOTE CONTROL PREPARATION(OPTIONAL)
HOW TO MOUNT ON A WALL
Make sure that wire and teminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m,
use a wire size greater than 0.5mm 2 .
HOW TO INSERT BATTERIES
Remove the battery cover from the remote controller.
• Pull out the cover according to the arrow direction.
Insert the two batteries.
• Be sure that the (+) and (-) directions are correct.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
• Do not use rechargeable batteries,
such batteries different from standard
dry cells in shape, dimensions, and
performance.
• Remove the batteries from the remote
controller if the air conditioner is not
going to be used for long time.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 24 -
LGE Internal Use Only

5. Wiring Connection
• Open the control box cover and connect the Remote controller cord and Indoor power wires.
Indoor
power cord
Remote
controller
cord
Control box cover
Control box cover
fitting screw(2 units)
[Air inlet side view]
• Heat Pump Model
Terminal Block of Indoor Unit
Terminal Block of Outdoor Unit
3(L) 4(N) 5 6 7 1(L) 2(N) 3(L) 4(N) 5 6 7 8
Power Cord
• Cooling Model
Terminal Block of Indoor Unit
Terminal Block of Outdoor Unit
3(L) 4(N) 5 6 7 1(L) 2(N) 3(L) 4(N) 5 6 7 8
Power Cord
The power cord connected to the outdoor unit should be complied
with the following specifications (Rubber insulation, type H05RN-F
approved by HAR or SAA).
CAUTION
The connecting cable connected to the indoor and outdoor unit should
be complied with the following specifications (Rubber insulation,
type H05RN-F approved by HAR or SAA).
8.5mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 2.5mm
7.5mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
20mm
If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer
or its service agent.
20mm
WARNING
Make sure that the screws of the terminal are free from looseness.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 25 -
LGE Internal Use Only

ELECTRICAL WIRING
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.
Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Circuit Breaker
Use circuit breaker or time delay fuse.
Switch box
Refrigerant pipe
CONNECTING THE CABLE TO OUTDOOR UNIT
1. Remove the Cover control from the unit by loosening a
screw.
Connect the wires to the terminals on the control
board individually as following.
2. Secure the cable onto the control board with the holder
(clamper).
3. Refix the cover control to the original position with the
screw.
4. Use a recongnized circuit breaker 20A(18K, 24K)
between the power source and the unit. A disconnection
device to adequately disconnect all supply lines
must be fitted.
Outdoor unit
Terminal block
Over 5mm
Holder for
power supply
cord
Cover control
Holder for
connecting
cable
Power supply
cord
Connecting
cable
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 26 -
LGE Internal Use Only

6. Connecting Pipes to the Indoor Unit
• Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cutting the pipes and the cable.
■ Use the accessory piping kit or the pipes purchased
locally.
■ Measure the distance between the indoor and the outdoor
unit.
■ Cut the pipes a little longer than measured distance.
■ Cut the cable 1.5m longer than the pipe length.
Copper
tube 90° Slanted Uneven Rough
2) Burrs removal
■ Completely remove all burrs from the cut cross section
of pipe/tube.
■ Put the end of the copper tube/pipe to downward direction
as you remove burrs in order to avoid to let burrs
drop in the tubing.
Point down
Pipe
Reamer
3) Putting nut on
■ Remove flare nuts attached to indoor and outdoor units,
than put them on pipe/tube having completed burr
removal.
(Not possible to put them on after flaring work)
Copper tube
Flare nut
4) Flaring work
■ Carry out flaring work using flaring tool as shown below.
Outside diameter
A
mm inch mm
Ø6.35 1/4 0.5~0.8
Bar
"A"
Bar
Handle
Yoke
Cone
Ø15.88 5/8 0.8~1.0
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
Copper pipe
Clamp handle
Red arrow mark
5) Check
■ Compare the flared work with figure below.
■ If flare is noted to be defective, cut off the flared section
and do flaring work again.
Smooth all round
Inside is shining without scratches
= Improper flaring =
Even length
all round
Inclined
Surface Cracked Uneven
damaged thickness
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 27 -
LGE Internal Use Only

Piping Connection
1. Form the piping according to its routing. Avoid bending
and bending back the same piping point more
than three times. (This will result in hardening of
pipe.)
2. After deforming the piping, align centers of the union
fitting of the indoor unit and the piping, and tighten
them firmly with wrenches.
3. Connect pipe to the service valve or ball valve which
is located below the outdoor unit.
4. After completing the piping connection, be sure to
check if there is gas leakage in indoor and outdoor
connection.
Outdoor
unit
Liquid side
Gas side
Flare connection
Indoor
unit
Flare connection
Vacuum drying
After completing the piping connection, execute vacuum
drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out using the service
ports of both the liquid and gas side valves.
Model Liquid side piping Gas side piping
18K, 24K Btu/h Ø 6.35mm Ø15.88mm
CAUTION
Use two wrenches and tighten with regular torque.
Ø6.35mm
Ø9.52mm
Ø12.7mm
Ø15.88mm
Ø19.05mm
Flare nut fastening torque
1.8kg . m
4.0kg . m
5.5kg . m
6.6kg . m
6.6kg . m
Union
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 28 -
LGE Internal Use Only

7. Installation of Decoration Panel
The decoration panel has its installation
direction.
Before installing the decoration panel,
always remove the paper template.
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by
amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included the indoor unit box.
2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decoration panel key hole ( ) on the screws fixed in step above, and slide the panel so
that the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector and display connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
Air conditioner unit
Piping side
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)
Inlet Louver Grille motor
Control box cover
Decoration panel
Key holes
Display
Lead wire for
louver motor and
display
Decoration panel fixing screws
(Hexagon M5 screw)
CAUTION
Inlet Grille
Install certainly the decoration panel.
Cool air leakage causes sweating.
Water drops fall.
Good example
Air conditioner
unit
Bad example
Air
Air conditioner unit
Cool air leakage
(no good)
Ceiling
board
Decoration panel
Fit the insulator (this part) and
be careful for cool air leakage
Ceiling
board
Decoration
panel
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 29 -
LGE Internal Use Only

8. Installation of Decoration Panel(Elevation Grille)
The decoration panel has its installation
direction.
Before installing the decoration panel,
always remove the paper template.
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by
amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included unit box.
2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decoration panel key hole ( ) on the screws fixed in step above, and slide the panel so
that the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector display connector, elevation grille connector and power supply connector
6. After tightening these screws, install the air inlet grille (including the air filter).
Air conditioner unit
Piping side
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)
Inlet Louver Grille motor
Decoration panel
Control box cover
Key holes
Display
Decoration panel fixing screws
(Hexagon M5 screw)
Inlet grille
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 30 -
LGE Internal Use Only

• Don't lay any material upon suction grill.
• Suction grill comprises 2 strands of wire. If any substance is placed on it then balance may be destroyed so that
the substance would drop down and cause a breakage or damage. Also the matter may cause trouble owing to
which the grill would not be correctly inserted at front panel.
• Don't shake suction grill. Or else there is worry that it may collide with adjacent material and the suction grill fall
down.
• Don't pull suction grill. Don't draw out suction grill irrationally. Or else there is worry that lift grill drive part is
damaged and suction grill might drop down.
• Don't place obstacle in lift passage of lift grill.
When suction grill descends, it automatically stops at a certain distance.
If there is any obstacle in lift passage, suction grill might drop down and there may be caused trouble failure of lift grill drive part.
• Turn off the air conditioner operation button before operating the lift grill.
Always stop the air conditioner operation for safety when suction grill descends.
• Don't damage lift rope by a sharp material. Or else there is worry about suction grill dropping because of rope
cutoff.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 31 -
LGE Internal Use Only

9. Indoor Unit Drain Piping
• Drain piping must have down-slope (1/50 to 1/100): be sure
not to provide up-and-down slope to prevent reversal flow.
• During drain piping connection, be careful not to exert extra
force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the indoor
unit is 32mm.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
Drain test
Pipe clamp
Indoor unit
Maintenance
drain port
Upward
routing
not allowed
1/50~1/100
MAX 700mm
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Feed water
Drain Pump
Drain pan
CAUTION
Flexible drain hose
(accessory)
Main
drain pipe
Drain
port Glue the joint
Drain hose connection
Use the clip (accessory)
The supplied flexible drain hose should not be curved,
neither screwed. The curved or screwed hose may
cause a leakage of water.
CAUTION
• Connect the main drain pipe to the exterior
and leave it provisionally until the test
comes to an end.
• Feed water to the flexible drain hose and
check the piping for leakage.
• Be sure to check the drain pump for normal
operating and noise when electrical wiring
is complete.
• When the test is complete, connect the
flexible drain hose to the drain port on the
indoor unit.
Flexible drain hose
Flexible drain hose
1/50~1/100
MAX 700mm
After the confirmation of the above conditions, prepare the wiring as follows:
Flexible drain hose
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the
circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the
unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they
are loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a
overload protection device.
• Proper starting power is not given to the compressor.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 32 -
LGE Internal Use Only

HEAT INSULATION
1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
2. Precautions in high humidity circumstance:
This air conditioner has been tested according to the
"KS Standard Conditions with Mist" and confirmed
that there is not any default. However, if it is operated
for a long time in high humid atmosphere (dew point
temperature: more than 23°C), water drops are liable
to fall. In this case, add heat insulation material
according to the following procedure:
• Heat insulation material to be prepared... Adiabatic
glass wool with thickness 10 to 20mm.
Indoor unit
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
• Stick glass wool on all air conditioners that are located in ceiling atmosphere.
• In addition to the normal heat insulation (thickness: more than 8mm) for refrigerant piping (gas piping: thick piping)
and drain piping, add further 10mm to 30mm thickness material.
FORM THE PIPINGS
1. Wrap the connecting portion of indoor unit with
the Insulation material and secure it with two
Plastic Bands. (for the right pipings)
•If you want to connect an additional drain hose, the
end of the drain-outlet should keep distance from
the ground. (Do not dip it into water, and fix it on the
wall to avoid swinging in the wind.)
In case of the Outdoor unit being installed
below position of the Indoor unit.
Seal a small opening
around the pipings
with gum type sealer.
Drain hose
Taping
2. Tape the Pipings, drain hose and Connecting
Cable from bottom to top.
3. Form the pipings gathered by taping along the
exterior wall and fix it onto the wall by saddle or
equivalent.
Plastic Band
Pipings
Connecting
cable
Power supply
cord
Trap is required to prevent water from entering
into electrical parts.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 33 -
LGE Internal Use Only

In case of the Outdoor Unit being installed
above position of the Indoor Unit.
2. Tape the Pipings and Connecting cable from bottom
to top.
Seal a small opening
around the pipings
with gum type sealer.
Trap
3. Form the pipings gathered by taping along the
exterior wall, and make the trap prevent water
from entering into the room.
4. Fix the pipings onto the wall by saddle or equivalent.
Test running
1) PRECAUTIONS IN TEST RUN
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
For test run, carry out the cooling operation first even during winter season. If heating operation is
Caution carried out first, it leads to the trouble of compressor.
Carry out the test run more than 5 minutes without stopping.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3 seconds
at the same time.
• To cancel the test run, press any button.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
• After completing work, be sure to measure and record trial run properties, and store measured data, etc.
• Measuring data are room temperature, outside temperature, suction temperature, blow out temperature,
air velocity, air volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping
temperature.
• As to the structure and appearance, check following items.
❏ Is the circulation of air adequate?
❏ Is the drainage OK?
❏ Is the heat insulation complete
(refrigerant and drain piping)?
❏ Is there any leakage of refrigerant?
❏ Does the romote controller works properly?
❏ Is there any error on wiring?
❏ Aren't terminal screws loosened?
M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 34 -
LGE Internal Use Only

2) Connection of power supply
1. Connect the power supply cord to the independent
power supply.
• Circuit breaker is required.
2. Operate the unit for fifteen minutes or more.
3) Evaluation of the performance
1. Measure the temperature of the intake and discharge
air.
2. Ensure the difference between the intake temperature
and the discharge one is more than 8°C (Cooling)
or reversely (Heating).
Thermometer
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of
wiring, be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal
function of a overload protection device.
• Proper starting power is not given to the compressor.
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning,
temperature control, etc.).
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 35 -
LGE Internal Use Only

Optional Operation
1) Two Thermistor System
(1) Open the rear cover of the wired remote-controller to set the mode.
(2) Select one of three selectable modes as follows.
• Position 1:
The room temperature is controlled by the thermistor of the main body.
• Position 2:
The room themperature is controlled by the thermistor of the wired remote-controller, control the
temperature according to the position of wired remote-controller.
• Position 3:
The room temperature is controlled by lower temperature between the temperature of main body and of
remote-controller sensor.
(3) Move the slide switch to set position.
Room Temp. sensor
Slide switch for 2 Thermistor
TH
R13H R12H OP5R16H OP4
CO1H
Position 2
Position 1
Position 3
REMO
MAIN
2TH
R14H
OP3 OP2 OP1
R19H
SW TH
R11H
REMO
MAIN
2TH
OP7
R18H
R17H
OP6
LO
STAND
HI
R03S
C070 R04S
R01S
R15H
SW
HIGH
R02S
Slide switch for ceiling height
(4) Close the rear cover and check if it works normally.
CAUTION
• Select the position after counselling with a customer.
• In case of cooling mode, room temperature is controlled by the main body sensor.
• To control the room temperature by a wired remote controller, install controller(room temp. sensor) to sense
the temperature more accurately.
• Maunfactured in the position 3.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 36 -
LGE Internal Use Only

2) Adjusting air volume to the height of ceiling
You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the comfortable
atmosphere to consumers.
Procedure
1. Choose the selectable position in the table after measuring the height of ceiling.
Ceiling height Mode of slide switch Change of air volume Remark
more than 3.3m High Ceiling Increasing
Maunfactured in standard
mode
2.7~3.3m Standard -
less than 2.7m Low Ceiling Decreasing
2. In the case of changing the height as "high" or "low", open the rear cover of the wired remote-controller.
3. Move the slide switch to the set position.
Slide switch for 2 Thermistor
Low ceiling
Standard
(Default)
High Ceiling
Lo
STAND
Hi
TH
R14H
OP3 OP2 OP1
R19H
SW TH
R11H
REMO
MAIN
2TH
OP7
R18H
R17H
OP6
R13H R12H OP5R16H OP4
CO1H
R15H
Slide switch for ceiling height
LO
STAND
HI
SW HIGH
C070 R04S
R02S
R03S
R01S
4. Close the rear cover and check if it works nomally.
NOTICE
Wiring Diagram for Heat pump
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
FUSE 5A
BR
R
COMP S
BL
FUSE 5A
BL
C
POWER
RELAY
POWER
INPUT
GN/YL
BL
RD
BR
4
2
BR
BL
CAPACITOR
H
8
6
BL
BL
C
1
0
F
GN/YL
RD
YL
OR
BK
TO INDOOR UNIT
REVERSING
VALVE
BK
FAN
MOTOR
BK
TB2
1(L) 2(N) 3(L) 4(N) 5 6 7 8
TERMINAL
BLOCK
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
TERMINAL
BLOCK
BR
BL
GN/YL
RD
BK
YL
FUSE T3.15A
DOOR S/W
COMP
BK
RD
WH
BR
INDOOR
MOTOR
YL
BK
OR
(OPTION)
H.V. ASSY
OUT FAN
4 WAY
RD
BK
GN/YL
DRAIN
PUMP
BL
BL
AIR
CLEANER
STEP
MOTOR
CN - DISP
TEMP.
THERMISTOR
DISPLAY PCB
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 37 -
LGE Internal Use Only

AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
Room Temp
HI AUTO Heater Preheat
MED JET Defrost Humidify
LO
Filter Out door
Time ZONE 1 2 3 4
Timer Operation unit
Program set
On Off
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
3) Group Control(Optional Wiring)
It operates maximum 16 Units by only one Wired Remote Controller,
and each Unit starts sequentially to prevent overcurrent.
Main PCB
RED(12V)
YL(SIGNAL)
BR(GND)
Indoor Unit 1
Terminal(Local Supply)
Block
Connector
RED(12V)
YL(SIGNAL)
BR(GND)
Main PCB
#1
YL(SIGNAL)
BR(GND)
Indoor Unit 2
Terminal(Local Supply)
Block
Connector
YL(SIGNAL)
BR(GND)
Main PCB
#2
....
YL(SIGNAL)
BR(GND)
Indoor Unit 16
Terminal(Local Supply)
Block
Connector
YL(SIGNAL)
BR(GND)
Main PCB
#16
....
Connecting Cable(Local Supply)
Slide Switch2
Wired Remote Controller
(Standard)
Single
Group
Remote
Controller
PCB
• Using the supplied Wired Remote Controller, wire
them like above.
• Move slide switch 2 to "Group" position.
• Ensure that the color of wire.
CAUTION
• Be careful not to exchange the color of wires.
• The maximum length of connecting wire should be below 200m(25Ω) on connecting each units.
• Use a wire more than 0.5mm 2
NOTICE
]Wiring Diagram for Cooling only
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
BR
FUSE 5A
BR
R
COMP S
BL
FUSE 5A
BL
C
POWER
RELAY
POWER
INPUT
GN/YL
BL
RD
BR
4
2
BR
BL
CAPACITOR
H
8
6
BL
BL
C
1
0
F
GN/YL
RD
TO INDOOR UNIT
YL
OR
BK
FAN
MOTOR
BK
TB2
1(L) 2(N) 3(L) 4(N) 5 6 7 8
TERMINAL
BLOCK
TO OUTDOOR UNIT
3(L) 4(N) 5 6 7
TERMINAL
BLOCK
BR
BL
GN/YL
RD
FUSE T3.15A
COMP
BR
INDOOR
MOTOR
YL
BK
OR
GN/YL
DRAIN
PUMP
BL
BL
STEP
MOTOR
CN - DISP
TEMP.
THERMISTOR
DISPLAY PCB
PIPE
THERMISTOR
FLOAT S/W
REMOTE
CONTROL
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 38 -
LGE Internal Use Only

Cycle
1. Installation (Connecting the piping between indoor and outdoor unit)
Indoor unit
Liquid side
3-Way
valve
Outdoor unit
Gas side
Gas cylinder
3-Way
valve
R22
Lo
Purge the air
• Installation
(1) Connect the piping between the indoor and outdoor
unit firmly.
– Incorrect connection may cause the leakage and
incomplete vacuuming.
(2) Attach the charging hose (manifold gage) to the
service port.
– Charging hose is necessary to check the pressure
and to inject N2 for leakage test.
– The valve of charging hose must be closed before
being connected.
(3) Inject the 100~300g N2 through the charging hose
opening the valve.
(4) Check the joint part using a gas detector or soapy
water for leakage.
– On checking, the service valve of main service port
must be closed, this test is only for checking whether
pipe connection is OK or not.
(5) If there is no leakage, discharge N2 in piping completely
into tank for retrieving.
– Completely discharge is needed for vacuuming.
– If leakage is found, please fasten the joint more tightly.
(6) After closing the valve of charging hose, disconnect
the tank and connect the vacuum pump to
charging hose and open the valve again for vacuuming.
(7) Turn on the vacuum pump until the pressure drops
below 0 kg/cm 2 .
(8) After vacuuming, disconnect the vacuum pump and
open the spindle of service port (liquid-side) slightly
for 30 sec and then open the spindle of service
port (gas side) with hexagonal wrench.
(9) Open the liquid side completely first and then the
gas side fully in order.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2. Disconnection (on moving)
Indoor unit
Liquid side
Closed
2-Way
valve
Outdoor unit
Retrieving Tank
Gas side
3-Way
valve
Closed
Lo
• Disconnection
(1) Attach the charging hose (manifold gage) to
the service port.
– Connect the manifold gage once to the service
port not stopping. Stopping in the middle of
process may cause the leakage.
(6) Disconnect the piping between indoor and
outdoor unit and then put on service cap to
the service port.
(2) Purge the air in hose into special device such
as retrieving tank opening the valve of charging-
hose (gas side) slightly and then close it
tightly.
(3) Operate the air conditioner for 10~15 min until
cycle is stabilized.
(4) Close the spindle of service port (liquid sidehigh
pressure) and wait till pressure of gas
side (low pressure) drops below 0 kgf/cm 2 .
(5) After the needle of gage indicates below
0 kgf/cm 2 , close the valve of gas side quickly
and turn off the power.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 40 -
LGE Internal Use Only

3. Gas Charging
(After Evacuation)
Indoor unit
Liquid side
2-Way
valve
Open
Outdoor unit
Gas side
Charging
cylinder
Check valve
3-Way
valve
Open
Lo
(1)
OPEN
CLOSE
• Procedure
(1) Connect the charge hose to the charging
cylinder.
– Connect the charge hose which you dis-connected
from the vacuum pump to the valve at
the bottom of the cylinder.
– If you are using a gas cylinder, also use a scale
and reverse the cylinder so that the system can
be charged in liquid state.
(2) Purge the air from the charge hose.
– Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air. (Be careful of the liquid refrigerant).
The procedure is the same if using a gas
cylinder.
(3) Open the valve (Lo side on the charge set and
charge the system with liquid refrigerant.
– If the system can not be charged with the specified
amount of refrigerant, it can be charged
with a little at a time (approximately 150g each
time) while operating the air conditioner in the
cooling cycle; however, one time is not sufficient,
wait approximately 1 minute and then
repeat the procedure.
\
This is different from previous procedures.
Because you are charging with liquid refrigerant
from the gas side, absolutely do not attempt to
charge with larger amounts of liquid refrigerant
while operating the air conditioner.
(4) Immediately disconnect the charge hose from
the 3-way valve’s service port.
– Stopping partway will allow the gas to be discharged.
– If the system has been charged with liquid
refrigerant while operating the air conditioner,
turn off the air conditioner before disconnecting
the hose.
(5) Mount the valve stem nuts and the service
port nut.
– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.
– Be sure to check for gas leakage.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 41 -
LGE Internal Use Only

Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air and operating current.
Temp. difference : approx. 0°C
Current
: less than 80% of
rated current
All amount of refrigerant leaked out
Check refrigeration cycle
Temp. Difference
Temp. difference : approx. 8°C
Current
: less than 80% of
rated current
Refrigerant leakege
Clog of refrigeration cycle
Defective compressor
Operating Current
Temp. difference : less than 8°C
Current
: over the rated
current
Excessive amount of refrigerant
Temp. difference : over 8°C
Normal
Notice :
Temperature difference between intake and discharge air depends on room air humidity. When the room air
humidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower temperature
difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Suction pressure Temperature
(Compared with (Compared with Cause of Trouble Description
the normal value) the normal value)
Higher
High
Defective compressor
Defective 4-way reverse valve
Current is low
Excessive amount of
High pressure does not quickly
Normal refrigerant rise at the beginning of
operation
Insufficient amount of
Lower Higher refrigerant (Leakage)
Clogging
Current is low
Current is low
Notice :
1. The suction pressure is usually 4.5~6.0 kg/cm 2 G at normal condition.
2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 42 -
LGE Internal Use Only

Electronic Parts Troubleshooting Guide
Possible Trouble 1
: The unit does not operate.
Is the input voltage
AC230V?
NO
Check the FUSE
and the wiring diagram.
YES
Is the input voltage
of IC03D about DC12V?
NO
Check the main P.C.B
pattern.
YES
Is the output voltage
of IC03D DC5V?
YES
NO
Exchange IC03D.
Is the PIN 49,58 of
MICOM. DC5V?
NO
Check the
5V P.C.B pattern.
YES
Exchange MICOM.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 43 -
LGE Internal Use Only

Possible Trouble 2
: The indoor fan does not operate.
Is it the HOT
START mode?
NO
YES
It is normal operation.
Is IC01M operated
normally?
YES
NO
Exchange IC01M.
Is the each Relay
any problem?
NO
YES
Exchange Relay.
Check the fan motor
and connector.(CN-MOTOR)
Possible Trouble 3
: Ineffective Heating
Is it Heating Mode?
NO
Adjust operation mode.
YES
Does the temperature
set all right?
NO
Adjust set temperature.
YES
Is IC01M operated
normally?
YES
NO
Change IC01M.
Is 4way-valve operated?
NO
Check RY-4Way.
YES
Check the connector.
(CN-OUT)
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 44 -
LGE Internal Use Only

Possible Trouble 4
: Auto Air direction louver does not operate.
Is IC01M operated
normally?
YES
NO
Exchange IC01M.
Check the motor and
connector.
(CN-LOUVER)
Possible Trouble 5
: Wired remote controller does not operate.
Is the LCD operated
normally?
NO
YES
Check the parts of
communication.
Is the terminal of wired
Remocon T2 DC12V?
YES
NO
Connector CN-Remo, and
terminals of wired
Remocon exactly.
Is the pin 39, 40 of
Micom DC 5V?
YES
NO
Check the wired Remocon
PCB and DC 12V pattern.
Change the wired Remocon.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 45 -
LGE Internal Use Only

Electronic control device
■ MAIN P.C.B ASM
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 46 -
LGE Internal Use Only

DC310V
NF01J R01J D01D
250V/ ZNR01J 22mH/3A 1M,1/2W 1N4007
T3.15A,3A INR14D561K
1 2
NTC01D
ZD01D
NF
10D-9
P6KE200A
3 4
AC_N
C01J C02J
D02D
100nF 100nF
C01D
UF4005
SIGNAL
275V 275V
10uF/
M_RTX
400V
IC01D
RY-COMP
TNY255P
AC_L
3,7,8
IC02M
DC 12V KID65004AF
DC 12V
STEP M
STEP M5
MED
D/PUMP
RY-D/PUMP
STEP M
STEP M2
STEP M
STEP M3
NF02M
LOUVER
SSR
NF01M
NF01M
HIGH
1 1
LOW
2 2
ZNR01M
3 3
IC01M
KID65004AF
DC 12V
FREQ
50/60Hz
REMO
REMO
C02L
681
BZ01E
PHASE
R02A 10K
5V
KIA7036P
Vout
GND
PRE AMP
TFMS-2380B
Force
SW
DISPLAY
Vcc LED1
LED2
LED3
LED4
1 1
7
2
3
4
5
6
4
5
6
7
2
3
5V
5V
REMO
OSC01B
8.00MHZ
GND
NC
NC
RESET
XIN
XOUT
LED1
LED2
LED3
LED4
LOUVER
FLOAT
C02F
C01F
1 1
103
103
2 2
C05D
681
S/Trans
1 6,7
D
IC02D(TLP521)
EN
TNY
255P
BP
S
C03D
ZD02D
103
11V
C04D
103/250VA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
P76
P77
P00
P01
P02
P03
P04
P05
P06
P07
P10(INT0)
P11(INT1)
P12(INT2/TC1)
P13(DVO)
P14(PPG)
P15(TC2)
P16
P17
P20(INT5/STOP)
TEST
P21(XTIN)
P22(XTOUT)
RESET
XIN
XOUT
VSS
P30
P31
P32
P33
P34
P35
P75
P74
P73
P72
P71
P70
VDD
(AIN7)/P67
(AIN6)/P66
(AIN5)/P65
(AIN4)/P64
(AIN3)/P63
(AIN2)/P62
(AIN1)/P61
(AIN0)/P60
VARF
VASS
P54
P53
(PWM/PDO)/P52
(INT4/TC4)/P51
(INT3/TC3)/P50
(SO2)/P47
(SI2)/P46
(SCK2)/P45
(SO1)/P44
(SI1)/P43
(SCK)/P42
NC
NC
NC
NC
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
IC02M
KID65004AF
DC 12V
HEATER
4WAY
OUTFAN
A/C
COMP
STEP M4
STEP M
5V
OPTION6
OPTION5
OPTION4
OPTION3
OPTION2
PIPE TH
ROOM TH
OPTION 1
SB3
SB2
SB1
SB0
CC RX
CC TX
TX
RX
TX
RX
CN-REMO
3
2
1
3
2
1
CN-PIPE
CN-ROOM
1
3
1
3
1
2
3
+
3
5
2
4
1
1 3 1 3
1 3 1 3
CN-POWER
2 2
1 1
3 3
LIVE
NEUTRAL
CN-D/PUMP
Drain
Motor
CN-MOTOR2
FAN
MOTOR
R02E
20
IC01A
3.6V
C01A C02A
3.3uF 102
/50V
R01E
1K
R01A 1K
R03L 1K
R04L 1K
R05L 1K
R06L 1K
CN-DISP
R01L
10K
R02L 1K
R01B
1.0M
5V
R02F
R01F
1K
1K
CN-FLOAT
12V
L01D
D03D
3.3uH
UF5402
R04D
C06D
39
470uF/35V
4,5
C07D
330uF/35V
R03D
150
IC03D C09D
KID78L05BP 220uF/50V
I O
7805
G
C08D
C10D
104
103
C11D
223/1KV
C12D
103/1KV
5V
S_B3
GND
S_B2
S_B1
S_B0
RX
TX
RX
TX
5V
5V
Q01K
KRA104M
5V
12V
R01K
1K
C01K
102
Q02K
KRC104M
C02K
102
R08H
12.1K
1%
R07H
12.1K
1%
R05H R03H
12.1K 12.1K
1% 1%
R06H R04H
12.1K 12.1K
1% 1%
R02H
6.2K
1%
5V
R01H
12.1K
1%
OR6 OR5 OR4 OR3 OR2 OR1 C02H C01H
103 103
10K*6
1/10W
5V
AC_L
IC01C
R03C
10K
R04C
4.7K
R02C
1K
R05C
1K
AC_N
R01C
200K/2W
Q04K
KRA104M
C01C
103
C03K
102
D02K
DAN212K
CN-CC
5V
R06C
10K
50/60Hz
Q01C
1
2
3
4
5
6
7
8
9
Schematic Digram
R06T
R01T
R02T
R03T
R04T
R05T
12V
Q03K
KRC104M
5V
S B0
S B1
S_B2
S_B3
L01K
100nH
R02K
4.7K
C04K
104
C05K
C06K
103
12V
5V
DC12V
Signal
GND
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 47 -
LGE Internal Use Only

Exploded View
1. Indoor Unit
266090
249951
268711B
159830
354212
352118
35211A
263230A
158591
266010
330870
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 48 -
LGE Internal Use Only

Accessory : Front Panel
130411
W0CZZA
349600
346810
359012
146811
268711A
140570
152312
135800
130911B
135303
137211
352150A
130911A
Accessory
267110A
Option
267110B
352150B
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 49 -
LGE Internal Use Only

Elevation Grille
137211
W4811-1
146812-1
W4811-2 146812-2
750830
249951
668713
268712
146811
266011-2
266011-2
146811
152312
267110
435310
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 50 -
LGE Internal Use Only

2. Outdoor Unit
435301
435512
349480
437210
559010
447910
430411
554031
549610
546810
550140
552113
W6920
W0CZZB
561410
554160
552202
437212
435511
649950
552203A
552203B
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 51 -
LGE Internal Use Only

P/NO : 3828A20048D JUNE, 2008