LG HBLG2504E User manual

LG Room
Air Conditioner
SERVICE MANUAL
LG
MODELS: HBLG2504E
LW250CE
LWHD2500ER
CAUTION
website http://www.lgservice.com
• 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
Outside dimensions....................................................................................................................................5
Product Specifications ..................................................................................................................................6
Installation .......................................................................................................................................................7
Select the Best Location ...........................................................................................................................7
Installation Check .......................................................................................................................................7
How to Secure the Drain Pipe ....................................................................................................................7
How to Install..............................................................................................................................................8
Cabinet Installation.....................................................................................................................................9
Operation ......................................................................................................................................................11
Function of Controls .................................................................................................................................11
Disassembly ..................................................................................................................................................12
Mechanical Parts......................................................................................................................................12
Air Handling Parts ....................................................................................................................................13
Electrical Parts .........................................................................................................................................14
Refrigerating Cycle...................................................................................................................................16
Schematic Diagram.......................................................................................................................................19
Electronic Control Device .........................................................................................................................19
Wiring Diagram.........................................................................................................................................20
Components Location ..............................................................................................................................21
Troubleshooting Guide .................................................................................................................................22
Piping System ..........................................................................................................................................22
Troubleshooting Guide .............................................................................................................................23
Electrical Parts Troubleshooting Guide ....................................................................................................25
Electric Parts ............................................................................................................................................29
Exploded View ..............................................................................................................................................35
Replacement Parts List ................................................................................................................................36

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 properties only.
Be sure not to do.
Be sure to follow the instruction.
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.

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.
Sharp
edges
Gasolin

Service Manual 5
Dimensions
Dimensions
D
W
H
'
F
TIMER POWERMODE
TEMP
FAN
SPEED
F1LOW
F2MED
F3HIGH
Dry Timer
Fan
Energy
Saver
Cool
W mm(inch) 660(25 31/32)
H mm(inch) 449(17 11/16)
D mm(inch) 721(28 13/32)
Model
Dimension
HBLG2504E, LW250CE, LWHD2500ER
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