LG LC8000 Schematic

Room Air Conditioner

SERVICE MANUAL

CAUTION

website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html

• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODELS: LC6000, LC8000, LC1000Y3

LC1200Y3, LC6000Y4, LC8000Y4 LC1000Y4, LC1200Y4, LEA0610ACL, LEA0810ACL, LEA1010ACLY3, LEA1210ACL LV080CE, LV100CE, LV120CE HBLG1000CY3, HBLG1004C

Air Conditioner Service Manual

TABLE OF CONTENTS

Preface ........................................................................3

Electronic Type ........................................................3

Mechanical Type......................................................3

Safety Precautions.....................................................4

Product Specifications ..............................................6

Operation ....................................................................8

Features ..................................................................8

Control Locations ....................................................8

Mechanical type model .......................................8

Electronic type model..........................................9

Disassembly Instructions........................................10

Mechanical Parts...................................................10

Front grille .........................................................10

Cabinet..............................................................10

Control box........................................................10

Air Handling Parts .................................................11

Refrigerating Cycle................................................14

Condenser ........................................................14

Evaporator.........................................................14

Capillary tube ....................................................15

Installation ................................................................17

How to Install the unit ............................................17

Checking installation..............................................17

How to drain ..........................................................17

Window Requirements ..........................................18

Installation Kits Contents.......................................18

Horizontal Sliding Window Installation...................19

Casement Window Installation ..............................20

Troubleshooting Guide ............................................21

Outside dimensions ..............................................21

Piping system ........................................................21

Troubleshooting Guide...........................................22

Air guide and turbo fan......................................11

Fan....................................................................11

Shroud ..............................................................12

Electrical Parts ......................................................12

Overload protector ............................................12

Compressor ......................................................12

Capacitor...........................................................13

Power cord ........................................................13

Thermostat........................................................13

Rotary switch ....................................................13

Motor.................................................................14

Room Air Conditioner Voltage Limits.....................29

Mechanical type model .....................................29

Electronic type model........................................29

Schematic Diagram.................................................33

Circuit Diagram......................................................33

Electronic Control Device ......................................38

Components Location

(For Main P.C.B ASM)............................................39

Components Location

(For Display P.C.B ASM)........................................39

Exploded View & Replacement Parts List .............40

2 Room Air Conditioner

Preface

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.

Electronic Type

1. Unplug the power cord and connect a jumper between 2 pins (black and white).

2. The grounding conductor (green or green and yellow) 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 Mode [except POWER OFF].

4. The value should be over 1MΩ.

Mechanical Type

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 1MΩ.

Service Manual 3

Safety Precautions

WARNING

CAUTION

WARNING

Gasolin

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

■ Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

■ Installation

Don’t use a power cord, a plug or a loose socket which is damaged.

• Otherwise, it may cause a fire or

electrical shock.

Do not disassemble or modify products.

• It may cause failure and electric shock.

Always plug into a grounded outlet.

• Otherwise, it may cause a fire or electrical shock.

Be caution when unpacking and installing.

• Sharp edges may cause injury.

Do not modify or extend the power cord length.

• It will cause electric shock or fire due to heat generation.

Do not use the power cord near flammable gas or combustibles such as gasoline, benzene, thinner, etc.

• It may cause explosion or fire.

4 Room Air Conditioner

■ Installation

Safety Precautions

Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.

• Otherwise, it may cause dispute with the neighbors.

Keep level parallel in installing the product.

• Otherwise, it may cause vibration or water leakage.

Service Manual 5

Product Specifications

FOR LC6000/LC8000/LC1000Y3/LC1200Y3/LC6000Y4/LC8000Y4/LC1000Y4/LC1200Y4/LEA0610ACL/ LEA0810ACL/LEA1010ACLY3/LEA1210ACL/HBLG1000CY3

MODELS

ITEMS

POWER SUPPLY

COOLING CAPACITY (Btu/h)

INPUT (W)

RUNNING CURRENT (A)

E.E.R (BTU/W.h)

OPERATING

CONDITION

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

INDOOR (°C)

OUTDOOR (°C)

LC6000

LEA0610ACL

280g(9.9 oz) 300g(10.6 oz) 460g(16.2 oz) 445g (15.7 oz) 530g(18.7 oz) 520g(18.3 oz) 510g(18.0 oz)

2 ROW 16 STACKS, SLIT FIN TYPE 3 ROW 16 STACKS, SLIT FIN TYPE

1 ROW 23 STACKS,

SLIT FIN TYPE

LC6000Y4

6,000 8,000 10,000 12,000

630 840 1,050 1,260

5.8 7.7 9.6 11.5

LC8000

LEA0810ACL

LC8000Y4

115V, 60Hz

26.7(DB)* 19.4(WB)**

35(DB)* 23.9(WB)**

TURBO FAN

AXIAL FAN

LC1000Y3

LEA1010ACLY3

HBLG1000CY3

9.5

2 ROW 23 STACKS,

LOUVER FIN TYPE

2/3

LC1000Y4

LC1200Y3

LEA1210ACL

LC1200Y4

FAN MOTOR

OPERATION CONTROL

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT (lbs/kg)

OUTSIDE DIMENSION (inch)

(W x H x D) (mm)

* DB:Dry Bulb **

WB:Wet Bulb

COMPRESSOR

FAN MOTOR

6 POLES

ROTARY SWITCH

THERMOSTAT

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

TOP-DOWN CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

3 WIRE WITH GROUNDING

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE SPLASHED BY FAN SLINGER

57/26 66/30 77/35 79/36

141/2 x 201/2 x 233/5

368 x 521 x 607

6 Room Air Conditioner

FOR LV080CE/LV100CE/LV120CE/HBLG1004C

Product Specifications

MODELS

ITEMS

POWER SUPPLY

COOLING CAPACITY (Btu/h)

INPUT (W)

RUNNING CURRENT (A)

E.E.R (BTU/W.h)

OPERATING

CONDITION

INDOOR (°C)

OUTDOOR (°C)

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

LV080CE

LV100CE

HBLG1004C

LV120CE

115V, 60Hz

8,000 10,000 12,000

840 1,050 1,260

7.7 9.6 11.5

9.5

26.7(DB)* 19.4(WB)**

35(DB)* 23.9(WB)**

300g(10.6 oz) 445g(15.7 oz) 510g(18.0 oz)

2 ROW 16 STACKS, SLIT FIN TYPE

3 ROW 16 STACKS, SLIT FIN TYPE

2 ROW 23 STACKS,

LOUVER FIN TYPE

TURBO FAN

AXIAL FAN

3/3

6 POLES

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 x H x D) (mm)

* DB:Dry Bulb **

WB:Wet Bulb

REMOTE CONTROLLER

THERMISTOR

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

TOP-DOWN CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

3 WIRE WITH GROUNDING

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE SPLASHED BY FAN SLINGER

66/30 77/35 79/36

141/

2 x 20

2 x 23

368 x 521 x 607

Service Manual 7

NOTICE

Operation

VENTCLOSE

OPEN

Inlet Grille

Operation

Features

• Designed for COOLING ONLY.

• Powerful and whispering cooling.

• Simple installation and service.

• Low air-intake, top cooled-air discharge.

Control Locations

MECHANICAL TYPE MODEL

• VENTILATION

The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions. When a fresh air is necessary in the room, set the ventilation lever OPEN position. The damper is opened and room air is exhausted.

• TEMP

Thermostat will automatically control the temperature of the room. Select a higher number for a cooler temperature in the room. The temperature is selected by moving the knob to the desired position. The 5 or 6 position is a normal setting for average conditions.

• Built-in adjustable THERMOSTAT or THERMISTOR

• Washable one-touch filter

• Compact size

• Reliable and efficient rotary compressor is equipped.

• MODE

- Turns air conditioner off.

- Med speed fan operation without cooling.

- Low speed fan operation without cooling.

- Cooling with high speed fan operation.

- Cooling with med speed fan operation.

- Cooling with low speed fan operation.

Before using the air conditioner secure the front grille with two screws enclosed with the owner’s manual.

1. Open the inlet grille downward and remove the air filter.

2. Fasten the front grille with screws.

3. Reinstall the air filter.

4. Close the inlet grille.

8 Room Air Conditioner

ELECTRONIC TYPE MODEL

Power

Temp

Fan Speed

Timer Mode

°C

Dry

4 5

Operation

Precaution: The Remote Control unit will not function properly if bright light strikes the sensor window of the air conditioner or

if there are obstacles between the Remote Control unit and the air conditioner.

1. POWER

• To turn the air conditioner ON, push this button. To turn the air conditioner OFF, push the button again.

FAN SPEED

• Every time you push this button, it advances the setting as follows: {High(F3) → Low(F1) → Med(F2) → High(F3)}

• This button takes priority over any other button.

• When you first turn it on, the unit is in cool mode, high fan speed, temperature setting at 22˚C(72˚F).

5. TIMER

- SHUT-OFF TIME

• You will usually use shut-off time while you sleep.

2. TEMPERATURE SETTING

• Use this button to automatically control the temperature of the room. The temperature can be set within a range of 16˚C(60°F) to 30˚C(86°F) by increments of 1˚C(1°F).

• With unit running, use Timer to set number of hours until shut-off.

• For your sleeping comfort, once Time is set, the Temperature setting will raise 1°C(2°F) after 30 min, and 1°C(2°F) after another 30 min.

• Every time you push Timer button, it advances the Timer

3. MODE

- Every time you push this button, it will cycle through the following modes: COOL, ENERGY SAVER, FAN and DRY.

- ENERGY SAVER

• The fan stops when the compressor stops cooling. Approximately every 3 minutes the fan will turn on and the unit will check the room air to determine if cooling is needed.

AUTO RESTART

When power is restored after an electrical power failure, the unit will begin to run at its last setting.

setting as follows: 1 Hour → 2 Hours → etc. → 12 Hours maximum.

- START TIME

• With unit not running, use timer to set number of hours before unit starts.

• Every time you push Timer button, it advances the Timer setting as follows: 1 Hour → 2 Hours → etc. → 12 Hours maximum.

6. REMOTE CONTROL SENSOR

Service Manual 9

Disassembly Instructins

Inlet GrilleInlet Grille

Disassembly Instructions

— Before the following disassembly, set POWER SWITCH to OFF and disconnect the power cord.

Mechanical Parts

FRONT GRILLE

1. Open the inlet grille downward and remove the air filter.

2. Remove the screws which fasten the front grille.(See Figure 1)

3. Pull the front grille from the right side.

4. Remove the front grille.(There are 4 hooks.)

5. Re-install the components by referring to the removal procedure, above.

CABINET

1. After disassembling the FRONT GRILLE, remove the 6 screws which fasten the cabinet at both sides.(See Figure 2)

2. Remove the 4 screws which fasten the cabinet at back.

3. Remove the cabinet.

4. Re-install the components by referring to the removal procedure, above.

Figure 1

CONTROL BOX

1. Remove the front grille. (Refer to section 2.1.1)

2. Remove the cabinet. (Refer to section 2.1.2)

3. Remove the 1 screw which fasten the power cord. (See Figure 3)

4. Disconnect the grounding screw from the evaporator channel.

5. Remove the 2 screws which fasten the control box.(See Figure 3)

6. Remove the housing which connects motor wire in the control box.

7. Remove three leads which connect compressor.

8. Discharge the capacitor by placing a 20,000 ohm resistor across the capacitor terminals.

9. Raise the control box upward completely.

10. Re-install the components by referring to the removal procedure, above. (Refer to the circuit diagram found on pages 29~32 in this manual and on the control box.)

Figure 2

10 Room Air Conditioner

Figure 3

Air Handling Parts

AIR GUIDE AND TURBO FAN

1. Remove the front grille. (Refer to section 2.1.1)

2. Remove the cabinet. (Refer to section 2.1.2)

3. Remove the control box. (Refer to section 2.1.3)

4. Remove the 4 screws which fasten the brace.

5. Remove the brace.

6. Remove the 2 screws which fasten the upper air guide. (See Figure 4)

7. Remove the upper air guide.

8. Remove the 2 screws which fasten the evaporator.

9. Move the evaporator forward and pulling it upward slightly. (See Figure 5)

10. Remove orifice by pulling two taps.

11. Remove the clamp with a hand plier which

secures the turbo fan.

12. Remove the turbo fan. (See Figure 6)

13. Remove the motor. (Refer to section 2.3.7)

14. Remove the 2 screws which fasten the lower air

guide from the base pan.

15. Remove the 2 screws which fasten the motor

mount from the base pan.

16. Remove the 2 screws which fasten the lower air

guide and motor mount.

17. Move the lower air guide backward and pull out

from the base pan. (Move the lower air giude carefully.)

18. Re-install the components by referring to the

removal procedure, above.

Disassembly Instructins

Figure 4

Figure 5

FAN

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the brace (Refer to section 2.2.1)

3. Remove 6 screws which fasten the condenser.

4. Move the condenser to the right carefully.

5. Remove the clamp with a hand plier which secures the

fan.

6. Remove the fan. (See Figure 7)

7. Re-install by referring to the removal procedure.

Figure 6

Figure 7

Service Manual 11

Disassembly Instructins

SHROUD

1. Remove the fan. (Refer to section 2.2.2)

2. Remove the shroud. (See Figure 8)

3. Re-install the components by referring to the removal procedure, above.

Electrical Parts

OVERLOAD PROTECTOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the nut which fastens the terminal cover.

3. Remove the terminal cover. (See Figure 9)

4. Remove all the leads from the overload protector.

5. Remove the overload protector.

6. Re-install the components by referring to the removal procedure, above.

Figure 8

COMPRESSOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Discharge the refrigerant system using a Freon Recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system.

3. Remove the overload protector. (Refer to section

2.3.1)

4. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections.

5. Remove the 3 nuts and the 3 washers which fasten the compressor.

6. Remove the compressor. (See Figure 10)

7. Re-install the components by referring to the removal procedure, above.

Figure 9

Figure 10

12 Room Air Conditioner

CAPACITOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the screw and the clamp which fastens the capacitor.

3. Disconnect all the leads of capacitor terminals.

4. Re-install the components by referring to the removal procedure, above. (See Figure 11)

POWER CORD

1. Remove the cabinet. (Refer to section 2.1.2)

2. Disconnect the grounding screw from the control box.

3. Disconnect the 2 receptacles.

4. Remove a screw which fastens the clip cord. (See Figure 12)

5. Remove the power cord.

6. Re-install the component by referring to the above removal procedure, above. (Use only one ground-marked hole for ground connection.)

7. If the supply cord of this appliance is damaged, it must be replaced by the special cord. (The special cord means the cord which has the same specification marked on the supply cord attached at the unit.)

Disassembly Instructins

Figure 11

Mechanical Type

Figure 12

THERMOSTAT(For Mechanical Type)

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the 2 screws which fasten the thermostat.

3. Disconnect 2 leads of thermostat terminals.

4. Remove the thermostat.

5. Re-install the components by refering to the above removal procedure. (See Figure 13)

THERMOSTAT(For Electronic Type)

1. Plug out thermistor from the main PCB.

ROTARY SWITCH

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the 2 screws which fasten the rotary switch.

3. Disconnect all the leads of the rotary switch terminals.

4. Remove the rotary switch.

5. Re-install the components by referring to the above removal procedure. (See Figure 14)

Electronic Type

Figure 13

Figure 14

Service Manual 13

Disassembly Instructins

MOTOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the turbo fan. (Refer to section 2.2.1)

3. Remove the fan. (Refer to section 2.2.2)

4. Remove the 4 screws which fasten the motor from the Motor Mount. (See Figure 15)

5. Remove the motor.

6. Re-install the components by referring to the removal procedure, above.(See Figure 15)

Refrigerating Cycle

CONDENSER

CAUTION

Discharge the refrigerant system using a FreonTMRecovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system.

Figure 15

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the 4 screws which fasten the brace.

3. Remove the 4 screws which fasten the condenser and shroud. (See Figure 16)

4. Remove the 2 screws which fasten the condenser and base pan.

5. After discharging the refrigerant completely, unbraze the interconnecting tube at the condenser connections.

6. Remove the condenser.

7. Re-install the components by referring to notes. (See Figure 16)

EVAPORATOR

1. Remove the cabinet. (Refer to section 2.1.2)

2. Remove the control box.(Refer to section 2.1.3)

3. Remove the upper air guide. (Refer to section

2.2.1)

4. Remove the 2 screws which fasten the evaporator from lower air guide.

5. Move the evaporator sideways carefully. (Refer to section 2.2.1)

6. After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections.

7. Remove the evaporator.

8. Re-install the components by referring to notes. (See Figure 17)

Figure 16

Figure 17

14 Room Air Conditioner

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