Multi V PLUS2 - Service Manual.pdf - LG - impulsklima

Internal Use Only

http://biz.lgservice.com

System

Outdoor Unit

SERVICE MANUAL R410A

MODEL : ARUV Series

R410A

ARUN Series

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual.

Only for authorized service personnel.

Air Conditioner Service Manual

TABLE OF CONTENTS

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

Part 1 General Information ............................................................................................................. 10

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

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

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

Nomenclature .............................................................................................................................15

Outdoor Units Information ........................................................................................................16

Part 2 Outdoor Units ................................................................................................................ 19

Part 3 PCB Setting and Test Run ........................................................................................ 57

Part 4 Trouble shooting guide ............................................................................................. 69

- 2 -

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.

WARNING

This symbol indicates the possibility of death or serious injury.

CAUTION

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.

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.

- 3 -

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.

G a so li n

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.

R22

R407C

R410A

- 4 -

Only for training and service purposes

LGE Internal Use Only

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.

Operation

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.

Do not touch the power switch with wet

hands.

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

damage.

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

injury.

- 5 -

Only for training and service purposes

LGE Internal Use Only

Multi V PLUS2 - Service Manual.pdf

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