LG LT1030HR Manuale utente

Room

Air Conditioner

SERVICE MANUAL

MODEL: LT1030HR, LT1230HR

CAUTION

website http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions..........................................................................................................................................3

Installation.......................................................................................................................................................7

Installation requirements ...........................................................................................................................7

Installation..................................................................................................................................................8

How to Install..............................................................................................................................................8

Procedure A ...............................................................................................................................................9

Procedure B .............................................................................................................................................11

Procedure C.............................................................................................................................................12

Operating Instructions .................................................................................................................................14

Controls....................................................................................................................................................14

Remote control.........................................................................................................................................15

How to insert batteries .............................................................................................................................16

Ventilation Control....................................................................................................................................16

Air Direction..............................................................................................................................................16

Disassembly instructions.............................................................................................................................17

Mechanical Parts......................................................................................................................................17

Air Handling Parts....................................................................................................................................18

Electrical Parts .........................................................................................................................................19

Refrigeration Cycle...................................................................................................................................21

Schematic Diagram.......................................................................................................................................24

Wiring Diagram.........................................................................................................................................24

Troubleshooting Guide.................................................................................................................................25

Piping System ..........................................................................................................................................25

Troubleshooting Guide .............................................................................................................................26

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

Product specifications..................................................................................................................................31

Exploded View ..............................................................................................................................................32

Replacement Parts List ................................................................................................................................33

Service Manual 3

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.

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

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

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

WARNING

■Installation

Don’t use a power cord, a plug

or a loose socket which is dam-

aged.

• Otherwise, it may cause a fire or

electrical shock.

Always plug into a grounded

outlet.

• Otherwise, it may cause a fire or

electrical shock.

Do not modify or extend the

power cord length.

• It will cause electric shock or fire

due to heat generation.

Do not disassemble or modify

products.

• It may cause failure and electric

shock.

Be caution when unpacking and

installing.

• Sharp edges may cause injury.

Do not use the power cord near flam-

mable gas or combustibles such as

gasoline, benzene, thinner, etc.

• It may cause explosion or fire.

Be sure not to do.

Be sure to follow the instruction.

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

Gasolin

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

4Room Air Conditioner

Safety Precautions

■Operation

Do not place heavy object on the

power cord and take care so that

the cord should not be pressed.

• There is danger of fire or electric

shock.

Do not share the outlet with

other appliances.

• It will cause electric shock or fire

due to heat generation.

Take the power plug out if neces-

sary, holding the head of the plug

and do not touch it with wet hands.

• Otherwise, it may cause a fire or

electrical shock.

Do not place the power cord

near a heater.

• It may cause fire and electric

shock.

Do not allow water to run into

electric parts.

• It will cause failure of machine or

electric shock.

Use a soft cloth to clean. Do not

use wax, thinner, or a strong

detergent.

• The appearance of the air condi-

tioner may deteriorate, change

color, or develop surface flaws.

Unplug the unit if strange

sounds, odors, or smoke come

from it.

• Otherwise it may cause fire and

electric shock accident.

Do not open the suction inlet

grill of the product during opera-

tion.

• Otherwise, it may electrical

shock and failure.

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.

Ventilate the room well when

using this appliance together

with a stove, etc.

• An oxygen shortage may occur.

Turn off the power and breaker

firstly when cleansing the unit.

• Since the fan rotates at high speed

during operation, it may cause

injury.

Turn off the main power switch

when not using it for a long

time.

• Prevent accidental startup and the

possibility of injury.

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

Wax

Thinner

MODE TIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

Service Manual 5

Safety Precautions

Do not operate or stop the unit

by inserting or pulling out the

power plug.

• It will cause electric shock or fire

due to heat generation.

Do not damage or use an

unspecified power cord.

• It will cause electric shock or fire.

Do not operate with wet hands

or in damp environment.

• It will cause electric shock.

Hold the plug by the head when

taking it out.

• It may cause electric shock and

damage.

When gas leaks, open the win-

dow for ventilation before oper-

ating the unit.

• Otherwise, it may cause explo-

sion, and a fire.

Never touch the metal parts of

the unit when removing the fil-

ter.

• They are sharp and may cause

injury.

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.

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

CAUTION

■Installation

6Room Air Conditioner

Safety Precautions

Do not put a pet or house plant

where it will be exposed to

direct air flow.

• It may cause injury.

Do not block the inlet or outlet

of air flow.

• It may cause product failure.

Use a soft cloth to clean. Do not

use wax, thinner, or a strong

detergent.

• The appearance of the air condi-

tioner may deteriorate, change

color, or develop surface flaws.

Do not step on the indoor/out-

door unit and do not put any-

thing on it.

• It may cause an injury through

dropping of the unit or falling

down.

Always insert the filter securely.

Clean it every two weeks.

• Operation without filters will cause

failure.

Do not drink water drained from

air conditioner.

• It contains containments and will

make you sick.

Be cautious not to touch the

sharp edges when installing.

• It may cause injury.

Avoid excessive cooling and

perform ventilation sometimes.

• Otherwise, it may do harm to

your health.

Do not insert the hands or bars

through the air inlet or outlet

during operation.

• Otherwise, it may cause person-

al injury.

■Operation

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

Service Manual 7

Installation

Remove packing sheet from the back of the sleeve,

and packing corner and blue tape from the air condi-

tioner.

If you use an existing wall sleeve, you should mea-

sure its dimensions.

Install the new air conditioner according to these instal-

lation instructions to achieve the best performance.

All wall sleeves used to mount the new air conditioner

must be in good structural condition and have a rear

grille to securely attach the new air conditioner.

(FIG. 1)

With the LGE sleeve(optionally supplied with your

unit), you can maintain the best performance of the

new air conditioner. (FIG. 2)

ELECTRICAL SERVICE

Check your available electrical service. The power

supply available must be the same as that shown on

the unit nameplate (found on left side of cabinet).

All models are equipped with a 3-prong service plug to

provide proper service and safe positive grounding. Do

not change plug in any way. Do not use an adapter

plug. If your present wall outlet does not match your

plug, call a qualified electrician to make the necessary

corrections. SAVE CARTON for storage and this

OWNER'S MANUAL for future reference. The carton is

the best way to store unit during winter or when not in

use.

INSTALLATION HARDWARE

14-

(366 mm)

24-

(626 mm)

18"(458 mm)

19-

(499 mm)

MODETIMERPOWER

FAN

SPEED

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Saver

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Timer

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F2HIGH

2 Size options

To avoid risk of personal injury, property damage, or

product damage due to the weight of this device and

sharp edges that may be exposed:

•Air conditioners covered in this manual pose an

excessive weight hazard. Two or more people are

needed to move and install the unit.

To prevent injury or strain, use proper lifting and

carrying techniques when moving unit.

•Carefully inspect location where air conditioner will

be installed. Be sure it will support the weight of the

unit over an extended period of time.

•Handle air conditioner with care. Wear protective

gloves whenever lifting or carrying the unit. AVOID

the sharp metal fins of front and rear coils.

•Make sure air conditioner does not fall during instal-

lation.

REQUIRED TOOLS:

•Tight Fitting gloves

•Standard screwdriver

•Phillips screwdriver

•Pliers

•Sharp knife

•3/8-inch open end

wrench or adjustable

wrench

•1/4-inch hex socket and

ratchet

•Tape measure

•Electric drill

•1/4-inch drill bit

FIG. 1

Air Conditioner

ITEM NAME OF PARTS Q'TY

1 PLASTIC GRILLE 1

2 HORIZONTAL INSULATION STRIPS 2

3 AROUND INSULATION STRIPS 2

4 SUPPORT BLOCK 2

5 BAFFLE 1

6 TRIM FRAME 2

7 SHIM 2

PLASTIC NUTS AND WASHER SCREWS

9 GRILLE REAR 1

15-17/32"

(394 mm)

16-23/32"

(425 mm)

25-7/8"

(656 mm)

Expanded

aluminum metal grille

FIG. 2

LGE Wall Sleeve

Installation requirements

•Pick a location which will allow the conditioned air to

blow into the area you want. Good installation with

special attention to the proper position of the unit will

lessen the chance that service will be needed.

ITEMS IN INSTALLATION HARDWARE

You may not need all parts in the kit. Discard unused

parts

1. Identify the existing wall sleeve before installing the

unit from the listed below.

All wall sleeves used to mount the new Air

Conditioner must be in sound structural condition and

have a rear grille that securely attaches to sleeve, or

rear flange that serves as a stop for the Air

Conditioner,

2. Remove old air conditioner from existing wall

sleeve.

3. Clean the interior of an existing sleeve.

(Do not disturb seals.)

4. Wall sleeve must be securely fastened in wall

before installing the air conditioner. Use the nails or

screws through sleeve into wall, if needed. Repaint

sleeve if needed.

5. Prepare the wall sleeve for installation of the unit. If

you plan to use your existing wall sleeve, and it is

not LGE, use procedure B or C below.

6. Install new unit into wall sleeve.

When installation is completed, replacement unit

MUST have a rearward slope as shown. To achieve

1/4" slope, remove the backing from the 11-13/16"

shim strips and attach them as shown below in Fig. 3.

Place the higher portion of shim to the front of the rib

on base of wall sleeve.

NOTICE

8Room Air Conditioner

Installation

How to Install

We strongly recommend the removal of the old wall

sleeve and the installation of a new LGE Wall Sleeve.

If you decide to keep the existing wall sleeve, you have

to redirect the louvers at the back of the wall sleeve illus-

tration. The use of pliers is recommended. If you DO

NOT redirect, you run the risk of poor performance or

product failure. This is not covered under the terms of the

LGE warranty.

ITEM (inches) Qty.

Plastic grille 263/4x 161/21

Horizontal Insulation Strips 13/8x 5/8x 273/16 1

13/8x 13/8x 273/16 1

Around Insulation Strips 13/8x 3/4x 611/21

13/8x 13/8x 611/21

Support Block 13/4x 13/8x 45/16 2

Baffle

14 x

41/2

1/81

Shim 13 x 1 x 3/42

Trim Frame 2

Washer Screw 4

Nuts(Plastic) 4

Grille Rear 1

Wall Sleeve Dimensions (inches)

Brand Width Height Depth

White-Westinghouse 25-1/2 15-1/4 16, 17-1/2

Frigidaire or 22

Carrier (52F series)

General Electric 26 15-5/8 16-7/8

/Hotpoint

Whirlpool 25-7/8 16-1/2 17-1/8

or 23

Fedders/Emerson 27 16-3/4 16-3/4

or 19-3/4

LGE 25-7/8 15-17/32 16-23/32

Emerson/Fedders 26-3/4 15-3/4 15

Carrier (51S Series) 25-3/4 16-7/8 18-5/8

Friedrich 27 16-3/4 16-3/4

Procedure Brand

Depth(inches)

A LGE 16-23/32

White-Westinghouse

Frigidaire Carrier 16, 17-1/2

(52F series) or 22

BGeneral Electric 16-7/8

/Hotpoint

Whirlpool 17-1/8 or 23

Carrier (51S series) 18-5/8

Fedders/Emerson 16-3/4

or 19-3/4

CEmerson/Fedders 15

Friedrich 16-3/4

1/4"

Wall Sleeve

FRONT

UNIT

SHIM PLACEMENT UNIT INSTALLATION

1" high 3/4" High

Shim

6" 6"

FIG. 3

Service Manual 9

Installation

Procedure A

1. If you are using the new sleeve (optionally supplied

with your unit),skip to step 3. Otherwise, install the

plastic grille from the kit. Cut the plastic grille to 25-

1/2" wide and 15-1/4" high. Place the plastic grille to

the inside of the wall sleeve at the rear flange.

2. Fasten the 4 washer screws to secure the grille to

the wall sleeve. If you need plastic nuts to mount

plastic grille to the inside of the wall sleeve, there

are plastic nuts in the installation kit. The nuts are

installed from the inside of the sleeve and are

pressed into the square holes of the rear flanges.

3. Remove the backing from the Horizontal Insulation

strip 13/8x 3/88 x 273/16 and attach that to the inside

bottom of the sleeve as shown below. Remove the

backing from the Around Insulation strip 13/8x 3/4x

611/2and attach that to the inside front of the sleeve

as shown below.

4. Remove the metal rear grille and replace it with the

plastic rear grille to improve unit energy efficiency.

The plastic grille reduces the amount of hot air dis-

charge that recirculates through the unit.

5. Install the new unit into the wall sleeve.

6. To assemble trim, snap the tab of each piece into

the slot of the other piece as shown below. Slide

trim over the front of the air conditioner until trim is

flush with sleeve as shown below.

FIG. 4

Around Insulation

Horizontal Insulation

FIG. 6

FIG. 5

Wall

Trim (2 ea)

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

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Timer

TEMP

F1LOW

F2HIGH

Steel rear grille

Plastic rear grille

MODETIMERPOWER

FAN

SPEED

Fan

Heat

Energy

Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

•Air conditioners covered in this manual pose an

excessive weight hazard. Two or more people are

needed to move and install the unit.

To prevent injury or strain, use proper lifting and

carrying techniques when moving unit.

•When handling the air conditioner, be careful to

avoid cuts from sharp metal fins on front and rear

coils.

•Make sure air conditioner does not fall during

removal.

FIG. 7

FIG. 8

10 Room Air Conditioner

Installation

Procedure B

1. Redirect the louvers at the back of the wall sleeve to

60°angle as shown in the FIG 9. The use of pliers is

recommended.

2. If the wall sleeve already has a rear grille, skip to

step 4. If the wall sleeve does not have a rear grille

or louvered panel, install the plastic grille from the

kit. Cut the plastic grille to 25-1/2" wide and 15-1/4"

high. Place the plastic grille to the inside of the wall

sleeve at the rear flange.

3. Fasten the 4 washer screws to secure the grille to

the wall sleeve. If you need plastic nuts to mount

plastic grille to the inside of the wall sleeve, there

are plastic nuts in the installation kit. The nuts are

installed from the inside of the sleeve and are

pressed into the square holes of the rear flanges.

4. Remove the backing from the Horizontal Insulation

strip 1

3/8

5/8

x 27

3/16

and attach that to the inside bot-

tom of the sleeve as shown below. Remove the

backing from the Around Insulation strip 1

3/8

3/4

1/2

and attach that to the inside front of the sleeve

as shown below.

5. Remove the metal rear grille and replace it with the

plastic rear grille to improve unit energy efficiency.

The plastic grille reduces the amount of hot air dis-

charge that recirculates through the unit.

6. If the depth of your existing wall sleeve is less than

or equal to 18", skip to step 7. Otherwise, cut the

baffles and the support blocks according to length

"A" in the table below.

Rear Louvers

(Top View)

60°60°

7 5/16"

FIG. 9

FIG. 10

Place the plastic grille

FIG. 11

Fasten the screws

Around Insulation

Horizontal Insulation

FIG. 12

Steel rear grille

Plastic rear grille

MODETIMERPOWER

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SPEED

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Saver

Cool

Timer

TEMP

F1LOW

F2HIGH

FIG. 13

Depth"D" of the existing

wall sleeve (inches)

Length "A"

(inches)

Support

Block

Baffle

3/4

1-3/4

18 D 18-

18-5/8 D 19-3/4

19-

D 22

FIG. 14

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