LG LT-E1820CL User guide

Ceiling Cassette Air Conditioner

SVC MANUAL(Exploded View)

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

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

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

- 2 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Functions

- 3 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Airflow Direction Control

Auto Operation(Auto Change Over)

Deice (defrost) control (Heating)

Auto Restart

Hot-start Control (Heating)

• The indoor fan stops until the evaporator piping tempera­ture will be reached at 28°C.

Compact and light design

• To install a unit is very convenient because of smaller size
than textile. ( 600 x 600 )

Low noise

• The most advanced low-noise design.

• The adoption of turbo fan and round type heat exchanger
give the quietest operation.

Long life filter

• Long life wrinkle(type) and washable and anti-bacteria filter
is adopted.

Plasma Air Purifying Filter(2HL Only)

High head Drain pump

• Built-in drain pump automatically drains water.

• A standard drain-head height of up to 700mm is possible.

High-Ceiling corresponding Function

• According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.

Central Control(Optional)

•

It is operating individually or totally by central control function.

Group Control(Optional Wiring)

Elevation Grille (Optional)

•

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.

• Room temperature sensor. (Thermistor)

•

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.

• 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 logic.

• Both the indoor and outdoor fan stops during defrosting.

• Hot start after defrost ends.

- 4 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Timer

Weekly Program

(Cooling

model only)

(Heating

model only)

(Low) (Med) (High)

Cooling Operation Mode ( )
Heating Operation Mode ( ) Auto Operation Mode ( )

Soft Dry Operation Mode ( )

Fan Operation Mode

HI JET AUTOMEDLO

Program Holiday

SET/CLR

MinHour

Week

Timer CancelTimer Cancel

: High:39°C ↔ LOW:11°C

: Fan Operates without cooling & heating

Cooling Heating

Down to 18°C
Up to 30°C

Down to 16°C
Up to 30°C

- 5 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

■ ELEVATION GRILL (REMOTE CONTROLLER_Accessory)

• How to Use Remote Controller

• Main Components of Lift Grill

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.

➀ Lift grill front panel assembly

➁ Bolts for installation (4 EA, P/No. 3A00255K)

➂ Instruction manual

➃ Remote Controller for lift grill

Ascend

Signal transmitter

Descend

Stop

- 6 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Automatic stop distance

✳

If you want to change automatic distance setting,
consult with your sale agency.

Automatic Stop Distance of Grill

Ceiling height Low

Medium

High

(

Height: 3~4 m)

Automatic stop distance

1.5±0.5 m 2.5±0.5 m 3.5±0.5 m

- 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.

- Depress the up button( ).
Then suction grill goes up and enters into the front panel.

1. Stop the Air Conditioner Operation

2. Descend the Suction Grill

3. Raise the Suction Grill

- Depress the stop button( ).
Make use of this when you want to stop it at your wished posi­tion.

4. Stop the Suction Grill during Rising

• 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 con-

firm if there is neither obstacle nor mankind.

• When you are not to remove obstacle, stop the operation before touching the obstacle.

• How to Operate the Lift Grill

Model

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

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

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

LT-E2460AA LT-E1860CL LT-E1860HL

LT-E1862HL
LT-E1862BA

LT-E1820CL

LT-C182ELE0

LT-E1820HL

LT-H182ELE0

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

- 7 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Product Specifications (Cooling & Heating)

- 8 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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

Model

LT-E2460CL

LT-C246ELE0

LT-E2460HL LT-E2460BL

LT-E2462HL/BL

LT-H246ELE0/ELF0

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
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

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

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

- 9 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Dimensions

269

67055

570

269

190.5

160

52

90

90

120.4

30

521

670

570

450

40

110 110

670

670

CLOSE OPEN OPEN CLOSE

(1) Indoor Unit

- 10 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

LT-H***ELE0
LT-H***FLE0
LT-H***DLE0

W

D

H

W mm 670 850 950

Hmm909090

D mm 670 850 950

(unit : mm)

Model

LT-H***ELE0 LT-H***FLE0 LT-H***DLE0

DIM

Unit

- 11 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

(2) Outdoor Unit

Gas side
3-way valve

Liquid side
3-way valve

W

L6L7 L8 L9

L4

L11

L10

D

L1

L2

L5

L3

MODEL

DIM

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

All Models

Refrigeration Cycle Diagram

• HEAT PUMP

• 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

- 12 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

INDOOR UNIT

H/EX

Liquid SideGas Side

COMPRESSOR

VALVE REVERSING

ACCUM.

H/EX

Gas SideLiquid Side

CAPI C1

CAPI A

CAPI B

Heating Cooring

CAPI C2

(

OUTDOOR UNIT

GAS LIQUID

Elevation (m)

Length (m)

* Additional

refrigerant

(g/m)

Pipe Size

Rated Rated

Max. Max.

Capacity

18K 5/8" 1/4"

7.

5 50 5 30 25

24K 5/8" 1/4"

7.5 50 5 30 30

- 13 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

• COOLING ONLY

• 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

INDOOR UNIT

H/EX

Liquid SideLiquid Side

COMPRESSOR

ACCUM.

H/EX

Gas SideGas Side

CAPI C1

CAPI A

CAPI B

CAPI C2

OUTDOOR UNIT

GAS LIQUID

Elevation (m)

Length (m)

* Additional

refrigerant

(g/m)

Pipe Size

Rated Rated

Max. Max.

Capacity

18K 5/8" 1/4" 7.5 50 5 30 25

24K 5/8" 1/4" 7.5 50 5 30 30

- 14 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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

LT-E2460HL(Australia only)

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

COMP

R

S

H

42861

0

CF

BL

YL

OR

BK

TB2

BR

BR

BR

BR

BL

BL

BL

BL

BL

GN/YL

GN/YL

BK

BK

RD

CAPACITOR

REVERSING

VALVE

RD

C

POWER
RELAY

FAN

MOTOR

FUSE 5A

FUSE 5A

POWER

INPUT

TO INDOOR UNIT

TERMINAL

BLOCK

1(L)2(N

)

3(L)4(N

)

5

6

7

8

INDOOR

MOTOR

DRAIN

PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

Only for LT-Exxx2HL

AIR

CLEANER

H.V. ASSY

DOOR S/W

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

BK

YL

BL

GN

/

YL

OUT FAN

COMP

4 WAY

RD

BK

WH

RD
BK

3

(

L

)

4

(

N

)

5 6 7

FUSE T3.15A

OUTDOOR WIRING DIAGRAM

COMP

R

S

H

42861

0

CF

BL

YL

YL

WH

YL

OR

BK

TB2

BR

BR

BR

BR

BL

BL

BL

BL

BL

BL

GN/YL

GN/YL

BK

BK

RD

CAPACITOR

S/CAPACITOR

REVERSING

VALVE

RD

C

POWER
RELAY

FAN

MOTOR

FUSE 5A

FUSE 5A

POWER

INPUT

TO INDOOR UNIT

TERMINAL

BLOCK

3854A20119A

1(L)2(N

)

3(L)4(N

)

5

6

7

8

3

RY­COMP

RY­S/CAPA

CN-POWER

434

• HEAT PUMP

Model No.: LT-E1860HL/ LT-E2460HL/

- 15 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

INDOOR
MOTOR

DRAIN
PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

Only for LT-Exxx2HL

AIR

CLEANER

H.V. ASSY

DOOR S/W

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

BK

YL

BL

GN

/

YL

OUT FAN

COMP

4 WAY

RD

BK

WH

RD
BK

3

(

L

)

4

(

N

)

5 6 7

FUSE T3.15A

- 16 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

• COOLING ONLY

Model No.: LT-E1860CL/LT-E1860AA/LT-C182ELE0

Model No.: LT-E2460CL/LT-E2462CL/LT-E2460AA/LT-C246ELE0

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

INDOOR

MOTOR

DRAIN
PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

BL

GN

/

YL

COMP

3

(

L

)

4

(

N

)

5 6 7

FUSE T3.15A

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

INDOOR

MOTOR

DRAIN
PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

LT-E

***

2

HL ONLY

AIR

CLEANER

H.V. ASSY

DOOR S/W

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

YL

BL

GN

/

YL

COMP

RD

BK

WH

RD
BK

3(L) 4(N)

5 6 7

FUSE T3.15A

OUT FAN

COMP

R

S

H

42861

0

CF

BL

YL

OR

BK

TB2

BR

BR

BR

BR

BL

BL

BL

BL

BL

GN/YL

GN/YL

BK

RD

CAPACITOR

RD

C

POWER
RELAY

FAN

MOTOR

FUSE 5A

FUSE 5A

POWER

INPUT

TO INDOOR UNIT

TERMINAL

BLOCK

1(L)2(N

)

3(L)4(N

)

5

6

7

8

- 17 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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

- 18 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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 con-

troller 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

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low

- 19 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Intake Air temp.

Setting temp.+3°C

(Compressor OFF)

Setting temp.
(Compressor ON)

INDOOR FAN

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.

6. Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows.

(Hot Start)

Low

OFF

Selected

Fan Speed

minimum 3min

Selecting fan

speed

LowLowLow OFF OFF

minimum

10sec.

1min

A

A

minimum

1min.

minimum

10sec.

B

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

1min

COMPRESSOR

INDOOR FAN

ON

OFF LOW

Selected

fan speed

22°C

25°C

- 20 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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 opera-

tion 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.

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 FAULT MESSAGES

CH 01 Indoor room temperature thermistor error

CH 02 Indoor piping thermistor error

CH 03

Indoor main body / Remote controller unit communication error

CH 04 Water level float switch error

More than 45 minutes

of heating operation

Within

9min. 45sec.

ON OFF

ON

ON

ON OFF

COMPRESSOR

4-WAY VALVE

INDOOR FAN

-6°C ON

12°C OFF

The outdoor

piping Temp.

More than 10 min.

running of compressor

More than 45 minutes

of heating operation

HOT-

START

ON

- 21 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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 con-

sideration.

• 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.

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.

3) Piping length and the elevation

More than
30cm

Sunroof

Fence or

obstacles

More than 70cm

More than 50cm

More than
30cm

More than
30cm

Indoor unit

Outdoor unit

B

A

Unit:cm

Ceiling

Ceiling Board

Ceiling Board

30 or more

Above 250

330 or less

100

or more

50 or
more

50 or
more

30 or less

Floor

• 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

18K Btu/h

5/8" 1/4"

7.

5 50 5 30 25

24

K Btu/h

5/8" 1/4"

7.

5 50 5 30 30

CAPACITY

GAS LIQUID

Elevation B (m)

Length A (m)

* Additional

refrigerant

(g/m)

Pipe Size

Rated Rated

Max. Max.

- 22 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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.

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.

2. Ceiling opening dimensions and hanging bolt location

Unit:mm

570 Unit size

570 Unit size

450 (Hanging bolt)

7575

600 (Ceiling opening)

600 (Ceiling opening)

521(Hanging bolt)

39.5

39.5

Ceiling board

Level gauge

Ceiling

Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.

Cooking table

Air conditioner

Take enough
distance

• The dimensions of cardboard for installing are the
same as those of the ceiling opening dimensions.

• 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.

• 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.

CAUTION

- 23 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Wall

5~7mm

Indoor Outdoor

Set screw of
cardboard (4 pieces)

Cardboard
for installation

Ceiling board

150mm

Adjust the same height

Ceiling board

Ceiling

Flat washer for M10

(accessory)

Keep the length of the bolt

from the bracket to 40mm

Open the ceiling board
along the outer edge of the
paper model

Flat washer for M10

(accessory)

Hanging bolt

(W3/8 or M10)

Nut
(W3/8 or M10)

Nut

(W3/8 or M10)

Spring washer

(M10)

Air Conditioner body

3. The Indoor Unit Installation

• 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

• Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø 70 hole-core drill.

• Tighten the nut and bolt to prevent the unit from
falling off.

CAUTION

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 diffi-

cult 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.

- 24 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

• Fix the under plate on the wall

• Separate the under plate from Remote control box.

• Fix the cord clamps on the wall by ø 3 tapping

screws (accessory).

• Fix the remote control cord.

Remote control

box body

Cord clamp
(accessory)

Lever carefully

the box open

using a screw

driver, etc.

Front case

The lower part

Face of wall

Under plate

Screw (accessory)

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.

WIRED REMOTE CONTROL INSTALLATION

REMOTE CONTROL PREPARATION(OPTIONAL)

DISASSEMBLING

ELECTRICAL WIRING

HO

W TO MOUNT ON A WALL

HOW TO INSERT BATTERIES

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

.

Remote controller

(Main board)

CN REMO

• 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.

HOW TO INSERT BATTERIES

- 25 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

[Air inlet side view]

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).

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).

CAUTION

8.5mm

20mm

GN/YL

7.5mm

20mm

GN/YL

NORMAL
CROSS-SECTIONAL
AREA 0.75mm

NORMAL
CROSS-SECTIONAL
AREA 2.5mm

Terminal Block of Indoor Unit

3(L) 4(N)

567

1(L) 2(N) 3(L) 4(N)

5678

Terminal Block of Outdoor Unit

Power Cord

Terminal Block of Indoor Unit

3(L) 4(N)

567

1(L) 2(N) 3(L) 4(N)

5678

Terminal Block of Outdoor Unit

Power Cord

Control box cover

Indoor

power cord

Remote

controller

cord

Control box cover
fitting screw(2 units)

5. Wiring Connection

• Open the control box cover and connect the Remote controller cord and Indoor power wires.

• Heat Pump Model

• Cooling Model

Make sure that the screws of the terminal are free from looseness.

WARNING

If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufac­turer or its service agent.

- 26 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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

Switch box

Refrigerant pipe

Circuit Breaker

Use circuit breaker or time delay fuse.

ELECTRICAL WIRING

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

Connecting
cable

Cover control

Holder for
connecting
cable

Over 5mm

Holder for
power supply
cord

Power supply
cord

- 27 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Copper

tube

90°

Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handle

Red arrow mark

Cone

Yoke

Handle

Bar

"A"

Inclined

Inside is shining without scratches

Smooth all round

Even length

all round

Surface

damaged

Cracked Uneven

thickness

= Improper flaring =

• Preparation of Piping

6. Connecting Pipes to the Indoor Unit

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.

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.

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)

4) Flaring work

■ Carry out flaring work using flaring tool as shown below.

Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.

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.

Outside diameter A

mm inch mm

Ø6.35 1/4 0.5~0.8

Ø15.88 5/8 0.8~1.0

- 28 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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.

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.

Use two wrenches and tighten with regular torque.

Outdoor

unit

Liquid side

Flare connection

Flare connection

Gas side

Indoor

unit

Union

Flare nut fastening torque

Ø6.35mm 1.8kg.m

Ø9.52mm 4.0kg.m

Ø12.7mm 5.5kg.m

Ø15.88mm 6.6kg.m

Ø19.05mm 6.6kg.m

Model Liquid side piping Gas side piping

18K, 24K Btu/h

Ø 6.35mm Ø15.88mm

Piping Connection

Vacuum drying

CAUTION

- 29 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

7. Installation of Decoration Panel

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).

Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)

Control box cover

Piping side

Inlet GrilleInlet Grille

Inlet Grille

Louver motor

Decoration panel fixing screws
(Hexagon M5 screw)

Air conditioner unit

Decoration panel

Key holes

Display

Lead wire for
louver motor and
display

The decoration panel has its installation
direction.

Before installing the decoration panel,
always remove the paper template.

CAUTION

Install certainly the decoration pan­el.
Cool air leakage causes sweating.

Water drops fall.

Air conditioner
unit

Ceiling

board

Decoration panel

Decoration
panel

Fit the insulator (this part) and
be careful for cool air leakage

Good example

Air

Cool air leakage

(no good)

Bad example

Ceiling

board

Air conditioner unit

- 30 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)

Control box cover

Piping side

Inlet Grille

Louver motor

Decoration panel fixing screws
(Hexagon M5 screw)

Air conditioner unit

Decoration panel

Key holes

Inlet grille

Display

8. Installation of Decoration Panel(Elevation Grille)

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).

The decoration panel has its installation
direction.

Before installing the decoration panel,
always remove the paper template.

- 31 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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.

- 32 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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.

•

Be sure to install heat insulation on the drain piping.

Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings

The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:

• 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.

Heat insulation material: Polyethylene foam with
thickness more than 8 mm.

Drain test

Maintenance
drain port

Upward
routing
not allowed

Pipe clamp

Indoor unit

1/50~1/100

MAX 700mm

Feed water

Drain Pump

Drain pan

Flexible drain hose
(accessory)

Main
drain pipe

Glue the joint

Drain
port

Drain hose connection
Use the clip (accessory)

CAUTION

The supplied flexible drain hose should not be curved,
neither screwed. The curved or screwed hose may
cause a leakage of water.

1/50~1/100

MAX 700mm

Flexible drain hoseFlexible drain hose

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.

CAUTION

- 33 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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.

• 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 pip-

ing) and drain piping, add further 10mm to 30mm thickness material.

Indoor unit

Thermal insulator
(accessory)

Fastening band
(accessory)

Refrigerant piping

HEAT INSULATION

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.)

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.

In case of the Outdoor unit being installed
below position of the Indoor unit.

FORM THE PIPINGS

Trap is required to prevent water from entering
into electrical parts.

Seal a small opening
around the pipings
with gum type sealer.

Taping

Drain hose

Pipings

Connecting
cable

Plastic Band

Power supply
cord

- 34 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

2. Tape the Pipings and Connecting cable from bot­tom to top.

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.

In case of the Outdoor Unit being installed
above position of the Indoor Unit.

Seal a small opening
around the pipings
with gum type sealer.

Trap

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
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.

• 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.

CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE

Caution

❏ 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}

Test running

- 35 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Thermometer

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 dis-

charge air.

2. Ensure the difference between the intake tempera-

ture and the discharge one is more than 8°C (Cool­ing) or reversely (Heating).

Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning,
temperature control, etc.).

HAND OVER

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 nor-

mal function of a overload protection device.

• Proper starting power is not given to the compressor.

- 36 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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.

(4) Close the rear cover and check if it works normally.

TH

R14H

SW TH

REMO
MAIN
2TH

OP7
R18H

R17H

OP6

LO

STAND

SW HIGH

HI

R03S

C070

R04S

R02S

R01S

OP3

OP2 OP1

R19H

R11H

R13H R12H

OP5R16H OP4

R15H

CO1H

REMO

Room Temp. sensor

2TH

MAIN

Position 2
Position 1
Position 3

Slide switch for ceiling height

Slide switch for 2 Thermistor

• 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.

CAUTION

- 37 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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.

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.

4. Close the rear cover and check if it works nomally.

Wiring Diagram f

or Heat pump

TH

R14H

SW TH

REMO
MAIN
2TH

OP7
R18H

R17H

OP6

LO

STAND

SW HIGH

HI

R03S

C070

R04S

R02S

R01S

OP3

OP2 OP1

R19H

R11H

R13H R12H

OP5R16H OP4

R15H

CO1H

Lo

Hi

STAND

Slide switch for ceiling height

Slide switch for 2 Thermistor

Standard

(Default)

Low ceiling

High Ceiling

Ceiling height Mode of slide switch Change of air volume Remark

more than 3.3m High Ceiling Increasing

2.7~3.3m Standard -

less than 2.7m Low Ceiling Decreasing

Maunfactured in stan-

dard mode

NOTICENOTICE

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

COMP

R

S

H

42861

0

CF

BL

YL

OR

BK

TB2

BR

BR

BR

BR

BL

BL

BL

BL

BL

GN/YL

GN/YL

BK

BK

RD

CAPACITOR

REVERSING

VALVE

RD

C

POWER
RELAY

FAN

MOTOR

FUSE 5A

FUSE 5A

POWER

INPUT

TO INDOOR UNIT

TERMINAL

BLOCK

1(L)2(N

)

3(L)4(N

)

5

6

7

8

INDOOR

MOTOR

DRAIN

PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

(

OPTION

)

AIR

CLEANER

H.V. ASSY

DOOR S/W

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

BK

YL

BL

GN

/

YL

OUT FAN

COMP

4 WAY

RD

BK

WH

RD
BK

3

(

L

)

4

(

N

)

5 6 7

FUSE T3.15A

- 38 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

3) Group Control(Optional Wiring)

]Wiring Diagram for Cooling only

• 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

CAUTION

NOTICE

OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM

INDOOR

MOTOR

DRAIN
PUMP

STEP

MOTOR

TEMP.

THERMISTOR

PIPE

THERMISTOR

REMOTE

CONTROL

FLOAT S/W

CN - DISP

DISPLAY PCB

TERMINAL

BLOCK

TO OUTDOOR UNIT

BR

YL

BK

OR

BL

BL

BR

GN/YL

RD

BL

GN

/

YL

COMP

3

(

L

)

4

(

N

)

5 6 7

FUSE T3.15A

COMP

R

S

H

42861

0

CF

BL

YL

OR

BK

TB2

BR

BR

BR

BR

BL

BL

BL

BL

BL

GN/YL

GN/YL

BK

RD

CAPACITOR

RD

C

POWER
RELAY

FAN

MOTOR

FUSE 5A

FUSE 5A

POWER

INPUT

TO INDOOR UNIT

TERMINAL

BLOCK

1(L)2(N

)

3(L)4(N

)

5

6

7

8

It operates maximum 16 Units by only one Wired Remote Controller,
and each Unit starts sequentially to prevent overcurrent.

Operation unit

ZONE

1234

Humidify

JET

AUTO

AUTO SWING OPERATION

FAN SPEED

Program set

SUB FUNCTION

SET TEMP

Room Temp

HI
MED
LO

Heater
Defrost
Filter

Preheat

Out door

Time

Timer

On

Set no. Time

Off

01 03 05 07 09 11 13 15 17 19 21 23

Indoor Unit 1

Ter minal(Local Supply)
Block

Ter minal(Local Supply)
Block

Ter minal(Local Supply)
Block

Main PCB

#1

Main PCB

#2

Main PCB

#16

Wired Remote Controller
(Standard)

Indoor Unit 2

Main PCB

Indoor Unit 16

Connector

RED(12V)

YL(SIGNAL)

BR(GND)

RED(12V)

YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)

Connecting Cable(Local Supply)

Connector Connector

....

....

YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)

Remote

Controller

PCB

Single
Group

Slide Switch2

• Using the supplied Wired Remote Controller, wire
them like above.

• Move slide switch 2 to "Group" position.

• Ensure that the color of wire.

Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

Cycle

• Installation

(1) Connect the piping between the indoor and out-

door 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 N

2 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 N

2 in piping com-

pletely into tank for retrieving.

– Completely discharge is needed for vacuuming.
– If leakage is found, please fasten the joint more tight-

ly.

(6) After closing the valve of charging hose, discon-

nect 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.

Lo

Purge the air

Outdoor unit

Indoor unit

Liquid side

Gas side

3-Way
valve

3-Way
valve

Gas cylinder

R22

1. Installation (Connecting the piping between indoor and outdoor unit)

- 40 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

2. Disconnection (on moving)

• 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.

(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 side-

high pressure) and wait till pressure of gas
side (low pressure) drops below 0 kgf/cm2.

(5) After the needle of gage indicates below

0 kgf/cm2, close the valve of gas side quickly
and turn off the power.

(6) Disconnect the piping between indoor and

outdoor unit and then put on service cap to
the service port.

Lo

Outdoor unit

Indoor unit

Liquid side

Gas side

Closed

Closed

2-Way
valve

3-Way
valve

Retrieving Tank

- 41 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

3. Gas Charging

(After Evacuation)

• Procedure

(1) Connect the charge hose to the charging

cylinder.

– Connect the charge hose which you dis-con-

nected 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 spec-

ified 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.

(4) Immediately disconnect the charge hose from

the 3-way valve’s service port.

– Stopping partway will allow the gas to be dis-

charged.

– 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.

\

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.

Lo

Charging
cylinder

Outdoor unit

Indoor unit

Liquid side

Gas side

CLOSE

Open

2-Way
valve

3-Way
valve

OPEN

Open

Check valve

(1)

- 42 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Cycle Troubleshooting Guide

Trouble analysis

1. Check temperature difference between intake and discharge air and operating current.

Temp. Difference

Temp. difference : approx. 0°C
Current : less than 80% of

rated current

Temp. difference : approx. 8°C
Current : less than 80% of

rated current

Temp. difference : less than 8°C
Current : over the rated

current

Temp. difference : over 8°C

Operating Current

All amount of refrigerant leaked out
Check refrigeration cycle

Refrigerant leakege
Clog of refrigeration cycle
Defective compressor

Excessive amount of refrigerant

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.

Notice :

1. The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.

2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.

Suction pressure Temperature

(Compared with (Compared with Cause of Trouble Description

the normal value) the normal value)

Defective compressor Current is low
Defective 4-way reverse valve

Excessive amount of High pressure does not quickly

Normal refrigerant rise at the beginning of

operation

Insufficient amount of Current is low

Lower Higher refrigerant (Leakage)

Clogging Current is low

High

Higher

- 43 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Electronic Parts Troubleshooting Guide

: The unit does not operate.

Possible Trouble 1

YES

NO

YES

Is the input voltage

AC230V?

Check the FUSE
and the wiring diagram.

Is the PIN 49,58 of

MICOM. DC5V?

Exchange MICOM.

YES

NO

Check the main P.C.B
pattern.

NO

YES

Is the output voltage

of IC03D DC5V?

NO

Exchange

IC03D

.

Is the input voltage

of IC03D about DC12V?

Check the
5V P.C.B pattern.

- 44 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Possible Trouble 2

: The indoor fan does not operate.

NO

NO

Is it the HOT

START mode?

Is IC01M operated

normally?

Check the fan motor
and connector.(CN-MOTOR)

YES

Is the each Relay

any problem?

YES

NO

YES

It is normal operation.

Exchange IC01M.

Exchange Relay.

YES

YES

NO

YES

Is it Heating Mode?

Does the temperature

set all right?

Change IC01M.

NO

NO

Adjust operation mode.

Adjust set temperature.

Is IC01M operated

normally?

YES

Check the connector.
(CN-OUT)

Check RY-4Way.

NO

Is 4way-valve operated?

Possible Trouble 3

: Ineffective Heating

- 45 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Possible Trouble 4

: Auto Air direction louver does not operate.

Possible Trouble 5

: Wired remote controller does not operate.

YES

NO

Is IC01M operated

normally?

Check the motor and
connector.
(CN-LOUVER)

Exchange IC01M.

NO

YES

YES

YES

Is the LCD operated

normally?

Is the terminal of wired

Remocon T2 DC12V?

Is the pin 39, 40 of

Micom DC 5V?

Change the wired Remocon.

Check the wired Remocon
PCB and DC 12V pattern.

NO

NO

Check the parts of
communication.

Connector CN-Remo, and
terminals of wired
Remocon exactly.

- 46 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Electronic control device

■ MAIN P.C.B ASM

- 47 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

P20(INT5/STOP)

P12(INT2/TC1)

22

11

Force

SW

P32

LOUVER

FLOAT

LED4

P35

P33

P34

8.00MHZ

OSC01B

XIN

LED1

LED2

LED3

XOUT

P30

P31

XIN

XOUT

VSS

NC

RESET

NC

GND

P21(XTIN)

P22(XTOUT)

RESET

TEST

KIA7036P

1

33

22

11

2

3

3

1

3

1

PHASE

FREQ

REMO

P15(TC2)

P17

P16

P13(DVO)

P14(PPG)

P11(INT1)

P10(INT0)

P05

P06

P07

STEP M3

STEP M2

D/PUMP

LOUVER

MED

STEP M5

HIGH

LOW

P03

P04

P02

P00

P01

P77

P76

NC

NCNCNC

CC TX

CC RX

SB0

SB2

SB1

(SI1)/P43

(SCK)/P42

(SI2)/P46

(SCK2)/P45

(SO1)/P44

(INT4/TC4)/P51

(INT3/TC3)/P50

(SO2)/P47

(PWM/PDO)/P52

P53

RX

(AIN7)/P67

SB3

OPTION 1

ROOM TH

PIPE TH

OPTION2

OPTION3

OPTION4

OPTION5

(AIN2)/P62

(AIN1)/P61

(AIN0)/P60

VARF

VASS

P54

(AIN4)/P64

(AIN6)/P66

(AIN5)/P65

(AIN3)/P63

OPTION6

STEP M4

COMP

A/C

HEATER

4WAY

OUTFAN

P71

P70

VDD

P73

P72

P74

P75

TX

TX

RX

CN-REMO

132

132

C06D

C04D

103/250VA

470uF/35V

IC02D(TLP521)

C05D

681

5V

DISPLAY

TFMS-2380B

PRE AMP

LED2

LED3

LED4

Vout

GND

Vcc

LED1

77

4

5

6

4

5

6

1 1

2

3

2

3

5V

293230

31

REMO

262728

24

25

212223

20

19

3,7,8

NF01M

5V

+

ZNR01M

NF01M

SSR

8

KID65004AF

IC01M

DC 12V

50/60Hz

REMO

13

18

17

161415

111210

9

DC 12V

STEP M

STEP M

STEP M

DC 12V

KID65004AF

IC02M

576

4

3

103

2

1

1M,1/2W

275V

C02J

100nF

3

1

3

1

2 2

M_RTX

AC_L

275V

C01J

100nF

3 4

NF

INR14D561K

ZNR01J

T3.15A,3A

250V/

22mH/3A

12

NF01J

P6KE200A

ZD01D

DC310V

NTC01D

400V

10uF/

C01D

10D-9

AC_N

1N4007

R01J

D01D

D03D

C03D

UF4005

TNY255P

IC01D

4

1

S

2

255P

TNY

5

D02D

D

3

EN

BP

4,5

UF5402

S/Trans

1

6,7

363335

34

393837

41

40

444342

46

45

CN-ROOM

CN-PIPE

ZD02D

57

52

474948

51

50

54

53

56

55

605958

62

61

11V

63

64

STEP M

KID65004AF

IC02M

DC 12V

1 13 3

C08D

104

3.3uH

R03D

R04D

150

39

330uF/35V

C07D

L01D

12V

223/1KV

103/1KV

G

C12D

C11D

C10D

103

C09D

220uF/50V

KID78L05BP

7805

IC03D

I O

5V

CN-CC

1 13 3

9

8

7

6

4

5

3

1

2

NF02M

C01A

3.6V

CN-DISP

5V

CN-FLOAT

C02F

103

1K

R02F

C01F

103

1K

R01F

R04L

1K

R06L

R05L

1K

1K

102

R03L

1K

/50V

3.3uF

R01B

1.0M

R02L

1K

R01L

10K

IC01A

R02A

MOTOR

FAN

CN-MOTOR2

C02A

R01A 1K

10K

CN-D/PUMP

Motor

Drain

RY-D/PUMP

C02L

BZ01E

1K

R01E

R02E

20

681

NEUTRAL

RY-COMP

SIGNAL

CN-POWER

LIVE

RX

TX

S_B0TXRX

S_B2

S_B1

1K

AC_N

200K/2W

R01C

AC_L

R02C

102

C01K

R01K

1K

5V

C01C

R05C

103

1K

DAN212K

102

C03K

KRC104M

10K

R03C

IC01C

5V

4.7K

R04C

C02K

Q02K

102

12V

KRA104M

Q04K

Q01C

10K

5V

R06C

50/60Hz

D02K

S_B3

GND

5V

5V

OR1OR4OR6 OR5 OR2OR3 C01H

103

C02H

103

R03H

12.1K

R08H

12.1K

1%

R07H

12.1K

1%

R06H

12.1K

1%

R04H

12.1K

1%

R05H

12.1K

1% 1%

5V

R02H

6.2K

1%

R01H

12.1K

1%

KRA104M

Q01K

5V

10K*6

R01T

R06T

R02T

R03T

R04T

R05T

S_B3

S_B2

S B1

1/10W

S B0

5V

103

C06K

C05K

100nH

12V

KRC104M

Q03K

4.7K

C04K

104

R02K

L01K

GND

Signal

DC12V

12V

5V

Schematic Digram

- 48 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Exploded View

1. Indoor Unit

354212

249951

266090

268711B

266010

35211A

263230A

352118

330870

158591

159830

- 49 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

346810

130411

349600

359012

152312

135800

135303

W0CZZA

137211

267110B267110A

352150A

352150B

130911B

130911A

140570

268711A

146811

Accessory : Front Panel

Accessory

Option

- 50 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

137211

W4811-2 146812-2

146812-1W4811-1

435310

152312

268712

668713

249951

146811

146811

267110

750830

266011-2

266011-2

Elevation Grille

- 51 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

2. Outdoor Unit

435512

546810

549610

554160

552203A

649950

435511

W6920

552202

561410

W0CZZB

552203B

447910

550140

559010

430411

435301

349480

437212

437210

552113

554031

P/NO : 3828A20048D

JUNE, 2008