DOWNLOAD LG LWC1260ACG Service Manual ↓ Size: 3.43 MB | Pages: 127 in PDF or view online for FREE

—2—

1.1 SAFETY PRECAUTIONS................................2

1.2 INSULATION RESISTANCE TEST .................2

1.3 SPECIFICATIONS...........................................3

1.4 FEATURES......................................................7

1.5 CONTROL LOCATIONS .................................7

2.1 MECHANICAL PARTS ..................................12

2.1.1 FRONT GRILLE ...................................12

2.1.2 CABINET ..............................................12

2.1.3 CONTROL BOX ...................................12

2.2 AIR HANDLING PARTS ................................13

2.2.1 AIR GUIDE AND BLOWER ..................13

2.2.2 FAN ......................................................13

2.2.3 SHROUD ..............................................14

2.3 ELECTRICAL PARTS....................................14

2.3.1 OVERLOAD PROTECTOR ..................14

2.3.2 COMPRESSOR....................................14

2.3.3 CAPACITOR.........................................15

2.3.4 POWER CORD ....................................15

2.3.5 THERMOSTAT .....................................15

2.3.6 ROTARY SWITCH ...............................15

2.3.7 MOTOR ................................................16

2.4 REFRIGERATING CYCLE ............................16

2.4.1 CONDENSER.......................................16

2.4.2 EVAPORATOR.....................................16

2.4.3 CAPILLARY TUBE ...............................17

3.1 SELECT THE BEST LOCATION...................19

3.2 CHECK OF INSTALLATION..........................19

3.3 HOW TO DRAIN............................................19

3.4 HOW TO INSTALL ........................................20

4.1 OUTSIDE DIMENSIONS ...............................22

4.2 PIPING SYSTEM...........................................22

4.3 TROUBLESHOOTING GUIDE ......................23

5.1 CIRCUIT DIAGRAM ......................................33

5.2 ELECTRONIC CONTROL DEVICE...............38

5.3 COMPONENTS LOCATION (FOR MAIN P.C.B ASM)......40

5.4 COMPONENTS LOCATION (FOR DISPLAY P.C.B ASM)  ....40

..................................41

........42

This 

SERVICE MANUAL

provides various service information, including the mechanical and electrical

parts etc. This room air conditioner was manufactured and assembled under a strict quality control system.
The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1. When servicing the unit, set the ROTARY SWITCH

or POWER SWITCH to OFF and unplug the power
cord.

2. Observe the original lead dress.

If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.

3. After servicing the unit, make an insulation resis-

tance test to protect the customer from being
exposed to shock hazards.

1. Unplug the power cord and connect a jumper

between 2 pins (black and white).

2. The grounding conductor (green) is to be open.
3. Measure the resistance value with an ohm meter

between the jumpered lead and each exposed
metallic part on the equipment at all the positions
(except OFF) of the ROTARY SWITCH.

4. The value should be over 1M

Ω

.

—3—

POWER SUPPLY

COOLING CAPACITY

(Btu/h)

INPUT

(W)

RUNNING CURRENT

(A)

E.E.R

(BTU/W.h)

INDOOR

(°C)

OUTDOOR (°C)

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR 

COMPRESSOR

FAN MOTOR          

POWER CORD

DRAIN SYSTEM

NET WEIGHT

(lbs/kg)

OUTSIDE DIMENSION

(inch)

(W 

H 

D)  

(mm)

10,000

12,000

1,050

1,260

9.5

11.5

9.5

26.7(DB)*

19.4(WB)**

35(DB)*

23.9(WB)**

490g (17.3 Oz)

480g (17 Oz)

2 ROW 16 STACKS, SLIT-FIN TYPE

2 ROW 13 STACKS, LOUVERED-FIN TYPE

2 ROW 17 STACKS, LOUVERED-FIN TYPE

BLOWER

PROPELLER TYPE FAN WITH SLINGER-RING

2/3

2/2

2/3

2/2

6 POLES

ROTARY SWITCH

THERMOSTAT

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

1.8m(7") (3 WIRE WITH GROUDING)

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

90/41

95/43

23

5

/

8

x 14

31

/

32 

x 21

7

/

8

600 x 380 x 555

1ø, 115, 60Hz

OPERATING

CONDITION

* DB:Dry Bulb
** WB:Wet Bulb

—4—

POWER SUPPLY

COOLING CAPACITY

(Btu/h)

INPUT

(W)

RUNNING CURRENT

(A)

E.E.R

(BTU/W.h)

INDOOR

(°C)

OUTDOOR (°C)

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR 

COMPRESSOR

FAN MOTOR          

POWER CORD

DRAIN SYSTEM

NET WEIGHT

(lbs/kg)

OUTSIDE DIMENSION

(inch)

(W 

H  

D)  

(mm)

10,000

1,050

5.0

9.5

27(DB)*        19.5(WB)**

35(DB)*           24(WB)**

510g (18 Oz)

2 ROW 16 STACKS SLIT-FIN TYPE

2 ROW 17 STACKS, LOUVERED-FIN TYPE

BLOWER

PROPELLER TYPE FAN WITH SLINGER-RING

2/3 0/2

2/2

6 POLES

ROTARY SWITCH OR ROCKER SWITCH

WIRELESS REMOCON

THERMOSTAT

THERMISTOR

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

1.8m(7") (3 WIRE WITH GROUDING)

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

90/41

23

5

/

8

x 14

31

/

32 

x 21

7

/

8

600 x 380 x 555

1ø, 208/230V, 60Hz

OPERATING

CONDITION

* DB:Dry Bulb
** WB:Wet Bulb

—5—

POWER SUPPLY

COOLING CAPACITY

(Btu/h)

INPUT

(W)

RUNNING CURRENT

(A)

E.E.R

(BTU/W.h)

INDOOR

(°C)

OUTDOOR (°C)

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR 

COMPRESSOR

FAN MOTOR          

POWER CORD

DRAIN SYSTEM

NET WEIGHT

(lbs/kg)

OUTSIDE DIMENSION

(inch)

(W 

H  

D)  

(mm)

12,000

1,300

6.2

9.2

27(DB)*        19.5(WB)**

35(DB)*           24(WB)**

490g (17.3 Oz)

2 ROW 16 STACKS SLIT-FIN TYPE

2 ROW 17 STACKS, LOUVERED-FIN TYPE

BLOWER

PROPELLER TYPE FAN WITH SLINGER-RING

0/2

2/2

6 POLES

ROTARY SWITCH OR ROCKER SWITCH

WIRELESS REMOCON

THERMOSTAT

THERMISTOR

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

1.8m(7") (3 WIRE WITH GROUDING)

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

95/43

23

5

/

8

x 14

31

/

32 

x 21

7

/

8

600 x 380 x 555

1ø, 208/230V, 60Hz

OPERATING

CONDITION

* DB:Dry Bulb
** WB:Wet Bulb