LG Universal System Air Conditioner Bedienungsanleitung

Universal System

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.

2Universal System Air Conditioner

TABLE OF CONTENTS

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

I. Indoor Units

Introduction..............................................................................................................8

Ceiling Cassette 4-way..........................................................................................10

Ceiling & Floor.......................................................................................................31

Ceiling concealed Duct..........................................................................................45

II. Outdoor Units

Introduction............................................................................................................67

MPS Inverter Single A(AUUW-B, AUUW-O/R410A)..............................................69

III. Troubleshooting Guide

Self-diagnosis Function.........................................................................................96

Cycle Troubleshooting Guide.................................................................................97

Electronic Parts Troubleshooting...........................................................................98

General Information.............................................................................................103

IV. Electronic Control Device

Ceiling Cassette Type..........................................................................................120

Ceiling Duct Type.................................................................................................121

Ceiling & Floor.....................................................................................................123

V. Schematic Diagram

Ceiling Cassette Type..........................................................................................126

Ceiling Duct Type.................................................................................................127

Ceiling & Floor.....................................................................................................128

V. Functional Description

Ceiling Cassette Type..........................................................................................130

Ceiling Duct Type.................................................................................................132

Ceiling & Floor.....................................................................................................135

Outdoor Units ......................................................................................................138

VII. Explode View and Replacement Parts List

Indoor Units.........................................................................................................151

Outdoor Units ......................................................................................................169

Panel Assembly, Front.........................................................................................179

Safety Precautions

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.

This symbol indicates the possibility of death or serious injury.

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

■Installation

Be sure not to do.

Be sure to follow the instruction.

Do not use a defective or under-

rated circuit breaker. Use this

appliance on a dedicated circuit.

• There is risk of fire or electric

shock.

Always ground the product.

• There is risk of fire or electric

shock.

Install the panel and the cover

of control box securely.

• There is risk of fire or electric

shock.

Always install a dedicated cir-

cuit and breaker.

• Improper wiring or installation may

cause fire or electric shock

Use the correctly rated break-

er or fuse.

• There is risk of fire or electric

shock.

Do not modify or extend the

power cable.

• There is risk of fire or electric

shock.

Safety Precautions

4Universal System Air Conditioner

■Operational

Do not install, remove, or re-

install the unit by yourself

(customer).

• There is risk of fire, electric shock,

explosion, or injury.

Be cautious when unpacking

and installing the product.

• Sharp edges could cause injury.

Be especially careful of the case

edges and the fins on the con-

denser and evaporator.

For installation, always con-

tact the dealer or an

Authorized Service Center.

• There is risk of fire, electric shock,

explosion, or injury.

Do not install the product on a

defective installation stand.

• It may cause injury, accident, or

damage to the product.

Be sure the installation area

does not deteriorate with age.

• If the base collapses, the air condi-

tioner could fall with it, causing

property damage, product failure,

and personal injury.

Do not let the air conditioner

run for a long time when the

humidity is very high and a

door or a window is left open.

• Moisture may condense and wet or

damage furniture.

Do not touch(operate) the

product with wet hands.

• There is risk of fire or electrical

shock.

Do not place a heater or other

appliances near the power

cable.

• There is risk of fire or electric

shock.

Do not let electric parts of the

product get wet.

• There is risk of fire, failure of the

product, or electric shock.

Safety Precautions

Service Manual 5

■Installation

Do not open the inlet grill of the product during

operation. (Do not touch the electrostatic filter,

if the unit is so equipped.)

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

uct failure.

Be cautious that water could not enter the

product.

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

Always check for gas (refrigerant) leakage after

installation or repair of product.

• Low refrigerant levels may cause failure of product.

Install the drain hose to ensure that water is

drained away properly.

• A bad connection may cause water leakage.

Do not store or use flammable gas or com-

bustibles near the product.

• There is risk of fire or failure of product.

If strange sounds, or small or smoke comes

from product. Turn the breaker off or discon-

nect the power supply cable.

• There is risk of electric shock or fire.

Gasolin

Safety Precautions

6Universal System Air Conditioner

Keep level even when installing the product.

• To avoid vibration or water leakage.

Use two or more people to lift and transport

the product.

• Avoid personal injury.

Use a soft cloth to clean. Do not use harsh

detergents, solvents, etc.

• There is risk of fire, electric shock, or damage to the

plastic parts of the product.

Do not touch the metal parts of the product

when removing the air filter. They are very

sharp!

• There is risk of personal injury.

Do not step on or put anyting on the product.

(outdoor units)

• There is risk of personal injury and failure of product.

Do not insert hands or other objects through

the air inlet or outlet while the product is oper-

ated.

• There are sharp and moving parts that could cause

personal injury.

90˚

Wax

Thinner

■Operational

I. Indoor Units

Introduction.......................................................................................................8

Ceiling Cassette 4-way...................................................................................10

Ceiling & Floor................................................................................................31

Ceiling Concealed Duct..................................................................................45

Service Manual 7

• Models List

Type Refrigerant Chassis

name 18,000

(5.3) 24,000

(7.0) 30,000

(8.8) 36,000

(10.6)

Ceiling

Floor

R410A VB

12,000

(3.5)

48,000

(14.1) 60,000

(17.6)

1Ø, 220-240V,

50Hz

Model name

Nominal capacity [Btu/h(kW)] Power

Supply

R410A

Ceiling

Cassette

4-Way

Ceiling

Concealed

Duct

Indoor unit

R410A

ATNH126ELFB

[UT12 NEB] ATNH186ELFB

[UT18 NEB]

AVNH186BLAB

[UV18 NBB] AVNH246BLAB

[UV24 NBB] AVNH306BLAB

[UV30 NBB]

ABNH306GLAB

[UB30 NGB] ABNH366GLAB

[UB36 NGB]

ATNH246FLFB

[UT24 NFB] ATNH306FLFB

[UT30 NFB] ATNH366DLFB

[UT36 NDB] ATNH486DLFB

[UT48 NDB] ATNH606DLFB

[UT60 NDB]

ABNH486RLAB

[UB48 NRB] ABNH606RLAB

[UB60 NRB]

-- -

AVNH126ELAB

[UV12 NEB] ---

---

ABNH186HLAB

[UB18 NHB] ABNH246HLAB

[UB24 NHB]

----

8Universal System Air Conditioner

Introduction

• Model Number Nomenclature

Indoorunit

Decoration panel(For Ceiling Cassette Models)

A T N H 1 8 6 E L FB

Serial Number

Functions

A :Basic B : Low Ambient

C : Plasma Filter E : Elevation Grille

F : Elevation Grille + Plasma Filter

H : Plasma Filter + Low Ambient

L : Nano Plasma M : Nano Plasma + Elevation Grille

Look

L : Basic

Chassis Name

Electrical Ratings

6:1Ø,220V~240V,50Hz 8:3Ø,380V~415V,50Hz

Nominal CoolingCapacity in Btu/h

Ex) 18 -> 18,000 Btu/h, 48 -> 48,000 Btu/h

Model Type

C : Cooling Only H : HeatPump

Indicates that this is a indoor unit for R410A

ATN : Ceiling cassette type indoor unit

ABN : Ceiling concealed duct type indoor unit

AVN : Convertible type indoor unit

P T - H EC

Functions

A : Basic C : Plasma Air Purifier

E : Elevation Grille F : Elevation Grille + Plasma Air Purifier

Indoor Unit Chassis

D : D Chassis E : E Chassis F : F Chassis

Model Type

C : Cooling Only H : Heat Pump

Decoration Panel of Ceiling Cassette Type Indoor Unit

Service Manual 9

Introduction

10 Universal System Air Conditioner

Ceiling Cassette 4-way

Contents

1. Features & Benefits ..............................................................................11

2. List of Functions....................................................................................15

3. Specifications........................................................................................16

4. Dimensional Drawings ..........................................................................18

5. Wiring Diagrams ...................................................................................21

6. Piping Diagrams....................................................................................22

7. Operating Instructions...........................................................................23

8. Installation.............................................................................................25

9. Accessories ..........................................................................................30

Ceiling Cassette 4-way

(R410A·Indoor Units)

ATNH-EL/FL/DL

Ceiling Cassette 4-way

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