LG LWHD8000RY6, LWHD1000R, LWHD8000RY5, LWHD8000R Service Manual

website http://www.lgservice.com

LG

LG Room

Air Conditioner

SERVICE MANUAL

MODEL: LWHD8000R,LWHD8000RY5,LWHD1000R,LWHD8000RY6

CAUTION

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

•ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions..........................................................................................................................................	3
Dimensions .....................................................................................................................................................	6
Outside Dimensions ...................................................................................................................................	6
Product Specifications ..................................................................................................................................	7
Installation .......................................................................................................................................................	8
Select the Best Location ............................................................................................................................	8
Installation Check .......................................................................................................................................	8
How to Secure the Drain Pipe ....................................................................................................................	8
How to Install..............................................................................................................................................	9
Operation ......................................................................................................................................................	12
Function of Controls .................................................................................................................................	12
Disassembly ..................................................................................................................................................	13
Mechanical Parts......................................................................................................................................	13
Air handling Parts.....................................................................................................................................	14
Electrical Parts .........................................................................................................................................	15
Refrigerating Cycle...................................................................................................................................	17
Schematic Diagram.......................................................................................................................................	20
Electronic Control Device. ........................................................................................................................	20
Wiring Diagram.........................................................................................................................................	21
Components Location ..............................................................................................................................	22
Troubleshooting Guide .................................................................................................................................	23
Pipeing System ........................................................................................................................................	23
Troubleshooting Guide .............................................................................................................................	24
Electrical Parts Troubleshooting Guide ....................................................................................................	26
Electrical Parts .........................................................................................................................................	30
Exploded View ..............................................................................................................................................	36
Replacement Parts List ................................................................................................................................	37

2 Room Air Conditioner

Safety Precautions

Safety Precautions

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

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

WARNING This symbol indicates the possibility of death or serious injury.

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

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

Be sure not to do.

Be sure to follow the instruction.

WARNING

Always install the expansion panel(s).			Do not place the power cord near a heater.
• Improper assembly or installation may cause			• It may cause fire and electric shock.
incorrect operation, including injury, fire, and
electric shock hazards.

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

• It may cause explosion or fire.

Do not disassemble or modify products.

• It may cause electric shock and failure.

Gasoli	n

Service Manual 3

Safety Precautions

Plug in the power plug properly.

•Otherwise, it will cause electric shock or fire.

Do not modify power cord length.

•It will cause electric shock or fire.

Do not operate or stop the unit by inserting or pulling out the power plug.

• It will cause electric shock or

fire.

ON

ON

Use the air conditioner on a single outlet circuit.

Do not share the outlet with other appliances.

•It will cause electric shock or fire.

Do not use the socket if it is	Do not operate with wet
loose or damaged.	hands or in damp
	environment.
• It may cause fire and electric	• It may cause electric shock.
shock.

Do not damage or use an unspecified power cord.

•It will cause electric shock or fire.

Always plug into a grounded outlet.

•No grounding may cause electric shock.

Ventilate before operating air conditioner when gas goes out.

•It may cause explosion, fire, and burn.

4 Room Air Conditioner

Safety Precautions

If water enters the product, turn off the the power switch of the main body of appliance. Contact service center after taking the power-plug out from the socket.

• It will cause electric shock or failure of machine.

Do not clean the air conditioner with water.

•Water may enter the unit and degrade the insulation. It may cause an electric shock.

CAUTION

Never touch the metal parts of the unit when removing the filter.

• They are sharp and may cause injury.

Ensure that the outer case is not damaged by age or wear.

•If the outer case is damaged, it must be repaired or replaced immediately.

Leaving it damaged could result in the air conditioner falling out of the window, creating a safety hazard.

Do not block the inlet or outlet.

•It may cause failure of appliance or performance deteriorate.

Be cautious not to touch the sharp edges when installing.

• It may cause injury.

Sharp edges

Service Manual 5

Dimensions

Dimensions

SymbolsUsedin this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the air conditioner.

NOTICE This symbol indicates special notes.

OutsideDimensions

492 (19 3/8")

3/16")

42 (1 21/32")

497 (19 9/16")

42 (1 21/32")

100.3 (3 15/16")

30 (1

27.5 (1 3/32")

315 (12 3/8")

12 (0.4 1/16")

		Cool			'F
		Energy
		Saver
		Fan
		Dry	Timer	TEMP
		MODE	TIMER	FAN	POWER
				SPEED

347 (13 21/32")

22.5(0.8 3/32") 243.3(9 9/16")

492 (19 3/8")		497 (19 9/16")

		Cool			'F
		Energy
		Saver
		Fan
		Dry	Timer	TEMP
		MODE	TIMER	FAN	POWER
				SPEED

315 (12 3/8")

6 Room Air Conditioner

Specfications

Product Specifications

			MODELS			LWHD8000R		LWHD8000RY5			LWHD1000R
	ITEMS							LWHD8000RY6
	POWER SUPPLY							1ø , 115V, 60Hz
		CAPACITY			(BTU/h)	8,000		8,000			10,000
	COOLING	INPUT			(W)	820			820		1,020
		RUNNING CURRENT (A)				7.3			7.3		9.4
		E.E.R		(BTU/W.h)		9.8			9.8		9.8
	OPERATING	INDOOR ( C)					26.7(DB)*		19.4(WB)**
	CONDITION
		OUTDOOR ( C)					35(DB)*		23.9(WB)**
	REFRIGERANT (R-22) CHARGE					370g(13.1 oz)		420g(14.8 oz)			480g(16.9 oz)
	EVAPORATOR					2 ROW 11 STACKS, LOUVER-FIN TYPE
	CONDENSER					2 ROW 15 STACKS, STRAGHT TYPE
	FAN, INDOOR							TURBO FAN
	FAN, OUTDOOR					PROPELLER TYPE FAN WITH SLINGER RING
	FAN SPEEDS, FAN/COOLING/HEATING								3/3
	FAN MOTOR							6 POLES
	OPERATION CONTROL							REMOTE CONTROLLER
	ROOM TEMP. CONTROL							THERMISTOR
	AIR DIRECTION CONTROL					VERTICAL LOUVER (RIGHT & LEFT)
						HORIZONTAL LOUVER (UP & DOWN)
	CONSTRUCTION							TOP DOWN CHASSIS
	PROTECTOR		COMPRESSOR				OVERLOAD PROTECTOR
			FAN MOTOR				INTERNAL THERMAL PROTECTOR
	POWER CORD						3 WIRE WITH GROUDING
						ATTACHMENT PLUG (CORD-CONNECTED TYPE)
	DRAIN SYSTEM					DRAIN PIPE OR SPLASHED BY FAN SLINGER
	NET WEIGHT				(lbs/kg)	62/28		62/28			71/32
	OUTSIDE DIMENSION				(inch)			19 9/16 x 12 3/8 x 19 3/8
	(W x H x D)				(mm)			497 x 315 x 492

*DB : dry bulb

**WB : wet bulb

Service Manual 7

Installation

Installation

SelecttheBest Location

1.To prevent vibration and noise, make sure the unit is installed securely and firmly.

2.Install the unit where the sun does not shine directly on the unit.

3.The outside of the cabinet must extend outward for at least 12" and there should be no obstacles, such as a fence or wall, within 20" from the back of the cabinet because it will prevent heat radiation of the condenser.

Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner.

CAUTION: All side louvers of the cabinet must remain exposed on the outdside of the structure.

INSIDE OUTSIDE

FENCE

	AWNING
COOLED AIR	HEAT
	RADIATION
60"	ABOUT 1/4 "
30"-	Over 20"

	4. Install the unit slanted slightly so the back is slightly lower	Figure 1
	than the front (about 1/4"). This will force condensed water
	to the outside.

5.Install the unit with the bottom about 30"~60" above the floor level.

Installation Check

The setting conditions must be checked prior to initial starting.

The following items are especially important checking points when the installation is finished.

1.Grounding wire (Green or Green and Yellow) is provided in the power cord. The green wire must be grounded.

2.Connect to a single-outlet 15A circuit. (or 20A circuit for Electric Heater Model)

3.To avoid vibration or noise, make sure the air conditioner is installed securely.

4 Avoid placing furniture or draperies in front of the air inlet and outlet.

HowtoSecure theDrainPipe

In humid weather, excess water may cause the Base Pan to overflow. To drain the water, remove the Drain Cap and secure the Drain Pipe to the rear hole of the Base Pan. (Figure. 2)

Drain Pipe

Drain Cap

Figure 2

8 Room Air Conditioner

Installation

HowtoInstall

Window Requirements	INNER
	SILL

NOTICE All supporting parts should be secured to firm wood, masonry, or metal.

1.This unit is designed for installation in standard double hung windows with actual opening widths of 22" to 36". The upper and lower sash must open sufficiently to allow a clear vertical opening of 13" from the bottom of the sash to the window stool.

2.If storm window presents interference, fasten a 2" wide wood strip to the inner window sill across the full width of the sill. The wood strip should be thick enough to raise the height of the window sill so that the unit can be installed without interference by the storm window frame. See Figure. 4. Top of wood strip should be approximately 3/4" higher than the storm window frame (STORM WINDOW FRAME) or wood strip (OUTDOORS) to help condensation to drain properly to the outside.

3.Install a second wood strip (approximately 6" long by 11/2" wide and same thickness as first strip) in the center of the outer sill flush against the back off the inner sill. This will raise the L bracket as shown Figure. 4.

4.If the distance between STORM WINDOW FRAME and WOOD STRIP MOUNTED ON TOP OF INNER SILL is more than 1", two of wood strip are not necessary.

	OUTER
	SILL
INDOORS	OUTDOORS
	Figure 3
WOOD STRIP MOUNTED	1" MAX.
ON TOP OF INNER SILL	3/4"
	CLEARANCE
	STORM
INNER	WINDOW
	FRAME
SILL
WOOD STRIP
FOR L BRACKET
	OUTER
	SILL
INDOORS	OUTDOORS

Figure 4

Installation

HARDWARE

	TYPE A: 11EA	TYPE B: 5EA	TYPE C: 3EA	DRAIN PIPE
	(SHORT SCREW)	(WOOD SCREW)	(L BACKET)
	10mm	16mm
	TYPE D: 1EA	TYPE E: 1EA	TYPE F: 2EA	TYPE G: 1EA
	(SEAL STRIP)	(SASH SEAL)	(GUIDE PANEL)	(SUPPORT BACKET)
	(Adhesive backed)	(Not adhesive backed)

Service Manual 9

Installation

BEFORE INSTALLATION

1.Insert the guide panels into the guides of the air conditioner. Fasten the curtains to the unit with screws (TYPE A) as shown Figure. 5.

2.Cut the adhesive-backed seal strip (TYPE D) to the window width.

Remove the backing from the seal strip and attach the seal strip to the underside of the bottom window. (Figure. 6)

NOW START INSTALLATION

1. LOCATING UNIT IN WINDOW

Open the window and mark center line on the center of the inner sill, as shown in Figure. 6.

2.ATTACH L BRACKET

a.Install the L brackets behind the inner window sill, with the short side of bracket as shown.

Use the 2 screws (TYPE A) provided.

b.The bracket helps to hold unit securely in place. Be sure to place bracket edge flush against back of inner sill. See Figure. 7.

CAUTION: During the following step, hold unit firmly until window sash is lowered to top

channel behind side panel frames. Personal injury or property damage may result if unit falls from window.

3.INSTALL THE AIR CONDITIONER IN THE WINDOW

a.Carefully lift the air conditioner and slide it into the open window. Make sure the bottom guide of the air conditioner drops into the notches of the

L bracket. See Figure. 8.

IMPORTANT :

When the air conditioner drops into the L bracket, the air conditioner will be centered in window opening as shown in Figure. 9.

b.While steadying the air conditioner, carefully bring the window sash down behind the upper guide of the air conditioner, as shown in Figure. 10.

Type A

Type A

Figure 5

SEAL STRIP (TYPE D)

Figure 6

CENTER LINE

INNER SILL

ROOM SIDE

Figure 7

INNER SILL

OUTER SILL	TYPE A INSIDE
	CENTER LINE
	8"
SHORT SIDE	8"
OUTSIDE

L BRACKET

Figure 8

C enter Line

Figure 9

WINDOW FRAME

UPPER GUIDE SEAL

ABOUT 1/4"

BOTTOM

GUIDE

Figure 10	L BRACKET

10 Room Air Conditioner

Installation

4. SECURE THE GUIDE PANELS

Extend the guide panels (TYPE F) to fill the window opening using 4 screws (TYPE B) to secure them, as shown in Figure. 11.

5.INSTALL THE SASH SEAL AND SASH LOCK

a.Cut the sash seal (TYPE E) to the window width. Stuff the sash seal between the glass and the window to prevent air and insects from getting into the room, as shown in Figure. 11.

b.Fasten the L bracket using a (TYPE A) screw, as shown in Figure. 11.

6.Window installation of room air conditioner is now completed. See ELECTRICAL DATA for attaching power cord to electrical outlet.

NOTICE REMOVAL FROM WINDOW

Trun the air conditioner off, disconnect the power cord, remove the L bracket and the screws installed through the top and bottom of the guide panels, and save for reinstallation later. Close the guide panels. keeping a firm grip on the air conditioner, raise the sash, and carefully tilt the air conditioner backward, draining any condensate water. Lift the air conditioner from the window ad remove the sash seal from between the windows.

L Bracket

Type A

Sash Seal

(Type F)

Type B

Figure 11

Service Manual 11

Operation

Operation

•Designed for COOLING ONLY.

•Powerful and quiet cooling.

•Top-down chassis for the simple installation and service.

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

•Built-in adjustable Thermistor

•Washable one-touch filter

•Compact size

•Equipped with reliable and efficient rotary compressor.

FunctionofControls

DISPLAY

REMOTE CONTROL

Cool	F1 LOW
Energy	F2 MED
	F3 HIGH
Saver

Fan

Dry Timer TEMP

	MODE	TIMER	FAN
			SPEED

3

5

4

	'F	Power
	6
	Temp
	2
	Fan Speed
	POWER
	Timer	Mode

5

1

1

2

4

3

PRECAUTION: The Remote Control unit will not

function properly if strong light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner.

POWER BUTTON

To turn the air conditioner ON, push the button. To turn the air conditioner OFF, push the button again. This button takes priority over any other buttons.

ROOM TEMPERATURE SETTING BUTTON

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

Select the lower number for lower temperature of the room.

OPERATION MODE SELECTION BUTTON

Every time you push this button, it will shift among COOL, ENERGY SAVER, FAN and DRY.

- Energy Saver: If Energy Save mode is selected, the fan stops when the compressor stops cooling.a

Approximately every 3 minutes the fan will turn on and check the room air to determine if cooling is needed.

FAN SPEED SELECTOR

Every time you push this button, it is set as follows.

(Hi [F3] Low [F1] Med [F2] Hi [F3] Low [F1] ...)

ON/OFF TIMER BUTTON

You can set the time when the unit will turn on or turn off automatically by pressing the timer button. If the unit is operating, this button controls the time it will be turned off. If the unit is off state, this button controls the time it will start. Every time you push this button, the remaining time will be set as follows.

-Stopping operation

(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours 0Hour 1Hour 2Hours ... )

-Starting operation

(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours off 1Hour 2Hours ... )

REMOCON SIGNAL RECEIVER

12 Room Air Conditioner