LG LW1815HR User manual

LG Room
Air Conditioner
SERVICE MANUAL
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL:
LW1815HR,LW2415HR
•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
Dimensions......................................................................................................................................................5
Product Specifications...................................................................................................................................6
Installation.......................................................................................................................................................8
How to Install the Unit ................................................................................................................................8
How to use the Reversible Inlet grille.........................................................................................................8
Window Requirements...............................................................................................................................9
Installation Kits Contents (some models including installation kit)...........................................................10
Suggested tool Requirements..................................................................................................................10
Cabinet Installation...................................................................................................................................11
Operation.......................................................................................................................................................13
Disassembly instructions.............................................................................................................................14
Mechanical parts......................................................................................................................................14
Air Handling Parts ....................................................................................................................................15
Electrical Parts.........................................................................................................................................16
Refrigeration cycle ...................................................................................................................................19
Schematic Diagram.......................................................................................................................................22
Troubleshooting guide..................................................................................................................................23
Piping System ..........................................................................................................................................23
Troubleshooting guide..............................................................................................................................24
Room Air Conditioner Voltage Limits........................................................................................................26
Exploded View...............................................................................................................................................28
Replacement Parts List ................................................................................................................................29

Service Manual 3
Safety Precautions
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
Do not use damaged power cord plugs, or a
loose socket.
• There is risk of fire or electric shock.
Always use the power plug and socket with
the ground terminal.
• There is risk of electric shock.
Be sure not to do.
Be sure to follow the instruction.

4Room Air Conditioner
Safety Precautions
Do not modify or extend the power cord.
• There is risk or fire or electric shock.
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 condenser and
evaporator.
Do not store or use flammable gas or com-
bustibles near the air conditioner.
• There is risk of fire or failure of product.
Be sure the installation area does not deterio-
rate with age.
• If the base collapses, the air conditioner could fall with
it, causing property damage, product failure, and per-
sonal injury.
Gasolin
Sharp edges

Dimensions
Dimensions
H
W
D
Outside Dimensions
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Symbols Used in this Manual
Service Manual 5
W mm(inch) 660 (26) 660 (26)
H mm(inch) 428 (16 27/32) 428 (16 27/32)
D mm(inch) 675 (26 9/16) 770 (30 5/16)
Model
Dimension
LWHD1800HR LWHD2400HR