LG PAHCMS000 Manuel utilisateur

SERVICE MANUAL

AIR

CONDITIONER

Please read this manual carefully before operating

your set and retain it for future reference.

Applied(AHU)

COMMUNICATION KIT

PAHCMR000, PAHCMS000

CONFIDENTIAL

www.lg.comP/NO : MFL70041201

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Ventilation System Service Manual

TABLE OF CONTENTS

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

Standards for Model ..............................................................................................6

Functions & Accessory ..........................................................................................7

Wiring Diagram ......................................................................................................8

Disassembly Diagram (Deal Drawing) ..................................................................9

Troubleshooting ...................................................................................................13

Safety Precautions

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1.1 Cautions in Repair

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

nIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the

following indications.

This symbol indicates the possibility of death or serious injury.

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

nMeanings of symbols used in this manual are as shown below.

Be sure to disconnect all remote electric power supplies before servicing. Internal

components and circuit boards are at main potential when the equipment is

connected to the power cables. This voltage is extremely dangerous and may

cause death or severe injury if come in contact with it.

When removing the front panel or cabinet, execute short-circuit and discharge

between high voltage capacitor terminals. If discharge is not executed, an electric

shock is caused by high voltage resulted in a death or injury.

Be sure to provide the grounding when repairing the equipment in a humid or wet

place, to avoid electrical shocks.

Be sure not to do.

Be sure to follow the instruction.

Dangerous Voltage

Be sure to provide grounding.

Safety Precautions

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Do not use a defective or underrated circuit breaker. Use the correctly rated

breaker and fuse. Otherwise there is a risk of fire or electric shock.

Install the panel and the cover of control box securely. Otherwise there is risk of

fire or electric shock due to dust, water etc.

Comm.Kit/outdoor wiring connections must be secured tightly and the cable should be

routed properly so that there is no force pulling the cable from the connection

terminals. Improper or loose connections can cause heat generation or fire.

Do not touch, operate, or repaire the product with wet hands. Hoding the plug by

hand when taking out. Otherwise there is risk of electric shock or fire.

Do not turn on the breaker or power under condition that front panel, cabinet, top

cover, control box cover are removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

Be sure to earth the air conditioner with an earthing conductor connected to the

earthing terminal.

Do not tilt the unit when removing panels. Otherwise, the water inside the unit can

spill and wet floor.

Be sure to turn off power switch before connect or disconnect connector, or parts

damage may be occurred.

Safety Precautions

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1.2 Inspections after Repair

Check to see if the parts are mounted correctly and wires are connected.

Improper installation and connections can cause an electric shock or an injury.

Check the installation platform or frame has corroded. Corroded installation

platform or frame can cause the unit to fall, resulting in injury.

Be sure to check the earth wire is correctly connected.

After the work has finished, be sure to do an insulation tset to check the

resistance is 2[Mohm] or more between the charge section and the non-charge

metal section (Earth position). If the resistance value is low, a disaster such as a

leak or electric shock is caused at user’s side.

Check to see if the terminal block is not dirty or loose. If terminal block is dust or

loose it can cause an electrical shock or fire.

Do not use a joined power cable or extension cable, or share the same power

outlet with other electrical appliances. otherwise, it can cause an electrical shock,

excessive heat generation or fire.

Do not insert hands or other objects through the air inlet or outlet while the

product is operating. There are sharp and moving parts that could cause

personal injury.

Do not block the inlet or outlet of air flow. It may cause product failure

Standards for Model

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Standards for Model

P AHCM S 000

Series

000 : Multi V, Single

Model Classfication

R :Return Air Control

S :Supply Air Control

Model Type

AHCM : AHU Comm. Kit

Accessory Type

Functions & Accessory

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Functions & Accessory

1. Main Functions

2. Accessory

[Note]

• O: Applied, • X: Not applied

Accessory model name : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate

package.

Category Functions Model

Individual control Remote controller PQRCVSL0 / PQRCVSL0QW (Optional)

Functions

Model

PAHCMS000 PAHCMR000

Input

Operation (on/off)

O O

Operation mode (cool/heat)

O O

Output

Operation (on/off)

O O

Defrost signal

O O

Alarm signal

O O

Comp. status

O X

ODU Capacity control

O X

3rd Party DDC interlock

O X

Wiring Diagram

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Wiring Diagram

Model : PAHCMR000

Model : PAHCMS000

Wiring Diagram

- 9 -

nMain Module

Disassembly Diagram (Deal Drawing)

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Disassembly Diagram (Deal Drawing)

Model : PAHCMR000

263230A

263230B

263230C

247810A

W4810

137215C

137215A

137215B

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