LG Multi V Manual de usuario

System

SVC MANUAL

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:

ARUN Series

(1Ø, 208/230V, 60Hz)

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Only for training and service purposes LGE Internal Use Only

Air Conditioner Service Manual

TABLE OF CONTENTS

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

Model Names...................................................................................................................................11

External Appearance ......................................................................................................................11

Nomenclature ..................................................................................................................................12

Outdoor Units..................................................................................................................................13

PCB Setting and Test Run..............................................................................................................39

Replacement Procedure.................................................................................................................46

Trouble Shooting Guide .................................................................................................................50

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Only for training and service purposes LGE Internal Use Only

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 properties only.

Be sure not to do.

Be sure to follow the instruction.

WARNING

■Installation

Have all electric work done by a licensed

electrician according to "Electric Facility

Engineering Standard" and "Interior Wire

Regulations" and the instructions given in

this manual and always use a special circuit.

• If the power source capacity is inadequate or

electric work is performed improperly, electric

shock or fire may result.

Ask the dealer or an authorized technician to

install the air conditioner.

• Improper installation by the user may result in

water leakage, electric shock, or fire.

Always ground the product.

• There is risk of fire or electric shock.

Always intstall a dedicated circuit and breaker.

• Improper wiring or installation may cause fire or

electric shock.

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Only for training and service purposes LGE Internal Use Only

Safety Precautions

For re-installation of the installed product,

always contact a dealer or an Authorized

Service Center.

• There is risk of fire, electric shock, explosion, or

injury.

Do not install, remove, or re-install the unit

by yourself (customer).

• There is risk of fire, electric shock, explosion, or

injury.

Do not store or use flammable gas or

combustibles near the air conditioner.

• There is risk of fire or failure of product.

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

Prepare for strong wind or earthquake and

install the unit at the specified place.

• Improper installation may cause the unit to top-

ple and result in injury.

Do not install the product on a defective

installation stand.

• It may cause injury, accident, or damage to the

product.

When installing and moving the air condition-

er to another site, do not charge it with a

different refrigerant from the refrigerant

specified on the unit.

• If a different refrigerant or air is mixed with the

original refrigerant, the refrigerant cycle may

malfunction and the unit may be damaged.

Do not reconstruct to change the settings of

the protection devices.

• If the pressure switch, thermal switch, or other

protection device is shorted and operated

forcibly, or parts other than those specified by

LGE are used, fire or explosion may result.

Gasolin

R22

R407C

R410A

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Only for training and service purposes LGE Internal Use Only

■Operation

Safety Precautions

Ventilate before operating air conditioner

when gas leaked out.

• It may cause explosion, fire, and burn.

Securely install the cover of control box and

the panel.

• If the cover and panel are not installed securely,

dust or water may enter the outdoor unit and fire

or electric shock may result.

If the air conditioner is installed in a small room, measures must be taken to prevent the

refrigerant concentration from exceeding the safety limit when the refrigerant leaks.

• Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceed-

ed. Should the refrigerant leak and cause the safety limit to be exceeded, harzards due to lack of oxy-

gen in the room could result.

Do not damage or use an unspecified power

cord.

• There is risk of fire, electric shock, explosion, or

injury.

Use a dedicated outlet for this appliance.

• There is risk of fire or electrical shock.

Be cautious that water could not enter the

product.

• There is risk of fire, electric shock, or product

damage.

Do not touch the power switch with wet

hands.

• There is risk of fire, electric shock, explosion, or

injury.

- 6 -

Only for training and service purposes LGE Internal Use Only

CAUTION

■Installation

Safety Precautions

When the product is soaked (flooded or

submerged), contact an Authorized Service

Center.

• There is risk of fire or electric shock.

Be cautious not to touch the sharp edges

when installing.

• It may cause injury.

Take care to ensure that nobody could step

on or fall onto the outdoor unit.

• This could result in personal injury and product

damage.

Do not open the inlet grille of the product

during operation. (Do not touch the electro-

static filter, if the unit is so equipped.)

• There is risk of physical injury, electric shock, or

product failure.

Always check for gas (refrigerant) leakage

after installation or repair of product.

• Low refrigerant levels may cause failure of

product.

Do not install the product where the noise or

hot air from the outdoor unit could damage

the neighborhoods.

• It may cause a problem for your neighbors.

Keep level even when installing the product.

• To avoid vibration or water leakage.

Do not install the unit where combustible gas

may leak.

• If the gas leaks and

accumulates around the

unit, an explosion may

result.

90˚

Gasolin

- 7 -

Only for training and service purposes LGE Internal Use Only

Safety Precautions

Use power cables of sufficient current

carrying capacity and rating.

• Cables that are too small may leak, generate

heat, and cause a fire.

Do not use the product for special purposes,

such as preserving foods, works of art, etc. It

is a consumer air conditioner, not a precision

refrigeration system.

• There is risk of damage or loss of property.

Keep the unit away from children. The heat

exchanger is very sharp.

• It can cause the injury, such as cutting the finger.

Also the damaged fin may result in degradation

of capacity.

When installting the unit in a hospital, com-

munication station, or similar place, provide

sufficient protection against noise.

•

The inverter equipment, private power generator,

high-frequency medical equipment, or radio com-

munication equipment may cause the air condition-

er to operate erroneously, or fail to operate. On the

other hand, the air conditioner may affect such

equipment by creating noise that disturbs medical

treatment or image broadcasting.

Do not install the product where it is exposed to sea wind (salt spray) directly.

• It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins,

could cause product malfunction or inefficient operation.

- 8 -

Only for training and service purposes LGE Internal Use Only

Safety Precautions

■Operation

Do not use the air conditioner in special

environments.

• Oil, steam, sulfuric smoke, etc. can significantly

reduce the performance of the air conditioner or

damage its parts.

Do not block the inlet or outlet.

• It may cause failure of appliance or accident.

Make the connections securely so that the

outside force of the cable may not be applied

to the terminals.

• Inadequate connection and fastening may gen-

erate heat and cause a fire.

Be sure the installation area does not deteri-

orate with age.

• If the base collapses, the air conditioner could

fall with it, causing property damage, product

failure, or personal injury.

Install and insulate the drain hose to ensure that water is drained away properly based on the

installation manual.

• A bad connection may cause water leakage.

Be very careful about product transportation.

• Only one person should not carry the product if it weighs more

than 20 kg (44 lbs).

• Some products use PP bands for packaging. Do not use any PP

bands for a means of transportation. It is dangerous.

• Do not touch the heat exchanger fins. Doing so may cut your fin-

gers.

• When transporting the outdoor unit, suspending it at the specified

positions on the unit base. Also support the outdoor unit at four

points so that it cannot slip sideways.

- 9 -

Only for training and service purposes LGE Internal Use Only

Safety Precautions

Safely dispose of the packing materials.

•

Packing materials, such as nails and other metal or

wooden parts, may cause stabs or other injuries.

•

Tear apart and throw away plastic packaging bags

so that children may not play with them. If children

play with a plastic bag which was not

torn apart, they face the risk of

suffocation.

Turn on the power at least 6 hours before

starting operation.

• Starting operation immediately after turning on

the main power switch can result in severe

damage to internal parts. Keep the power switch

turned on during the operational season.

Do not touch any of the refrigerant piping

during and after operation.

• It can cause a burn or frostbite.

Do not operate the air conditioner with the

panels or guards removed.

• Rotating, hot, or high-voltage parts can cause

injuries.

Do not directly turn off the main power

switch after stopping operation.

• Wait at least 5 minutes before turning off the

main power switch. Otherwise

it may result in water leakage

or other problems.

Auto-addressing should be done in condition of

connecting the power of all indoor and outdoour

units. Auto-addressing should also be done in

case of changing the indoor unit PCB.

Use a firm stool or ladder when cleaning or

maintaining the air conditioner.

• Be careful and avoid personal injury.

Do not insert hands or other objects through

the air inlet or outlet while the air conditioner

is plugged in.

• There are sharp and moving parts that could

cause personal injury.

- 10 -

Only for training and service purposes LGE Internal Use Only

Part 1

General Information

1. Model Names ................................................................11

1.1 Indoor Unit .............................................................11

1.2 Outdoor Unit ..........................................................11

2. External Appearance.....................................................12

2.1 Indoor Unit .............................................................12

2.2 Outdoor Unit ..........................................................13

3. Combination of Outdoor Units .....................................14

4. Nomenclature.................................................................15

4.1 Indoor Unit .............................................................15

4.2 Outdoor Unit ..........................................................15

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