LG L5004R User manual

LG Room
Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL: L5004R

2Room Air Conditioner
Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions..........................................................................................................................................3
Dimensions .....................................................................................................................................................7
Outside Dimensions...................................................................................................................................7
Product Specifications ..................................................................................................................................8
Installation .......................................................................................................................................................9
Select the Best Location ............................................................................................................................9
How to Install ..............................................................................................................................................9
Installation Kits Contents .........................................................................................................................10
How to Secure the Drain Pipe....................................................................................................................11
Operation ......................................................................................................................................................12
Feature ....................................................................................................................................................12
About the Controls of the Air Conditioner ................................................................................................13
Disassembly ..................................................................................................................................................14
Mechanical Parts......................................................................................................................................14
Air Handling Parts....................................................................................................................................15
Electrical Parts .........................................................................................................................................16
Refrigerating Cycle...................................................................................................................................17
Schematic Diagram.......................................................................................................................................20
Circuit Diagram.........................................................................................................................................20
Electronic Control Device.........................................................................................................................21
Components Location(For Main P.W.B ASM)...........................................................................................22
Troubleshooting Guide.................................................................................................................................23
Piping System ........................................................................................................................................23
Troubleshooting Guide .............................................................................................................................24
Exploded View ..............................................................................................................................................32
Replacement Parts List ................................................................................................................................33

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.
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.
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.
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
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property only.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property only.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property only.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property only.
WARNING
Installation
Always install the expansion panel(s).
• Improper assembly or installation may cause incorrect
operation, including injury, fire, and electric shock haz-
ards.
Do not place the power cord near a heater.
• It may cause fire and electric shock.
Be sure not to do.
Be sure to follow the instruction.
Installation
Always install the expansion panel(s).
• Improper assembly or installation may cause incorrect
operation, including injury, fire, and electric shock haz-
ards.
Do not place the power cord near a heater.
• It may cause fire and electric shock.
Be sure not to do.
Be sure to follow the instruction.
Installation
Always install the expansion panel(s).
• Improper assembly or installation may cause incorrect
operation, including injury, fire, and electric shock haz-
ards.
Do not place the power cord near a heater.
• It may cause fire and electric shock.
Be sure not to do.
Be sure to follow the instruction.
Installation
Always install the expansion panel(s).
• Improper assembly or installation may cause incorrect
operation, including injury, fire, and electric shock haz-
ards.
Do not place the power cord near a heater.
• It may cause fire and electric shock.
Be sure not to do.
Be sure to follow the instruction.
Do not use the power cord near flammable gas
or combustibles such as gasoline, benzene,
thinner, etc.
• It may cause explosion or fire.
Do not disassemble or modify products.
• It may cause electric shock and failure.
GasolinGasolinGasolinGasolinGasolinGasolinGasolinGasolin
CAUTION

4Room Air Conditioner
Safety Precautions
Plug in the power plug prop-
erly.
• Otherwise, it will cause electric
shock or fire.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electric shock or fire.
Do not damage or use an
unspecified power cord.
• It will cause electric shock or fire.
4Room Air Conditioner
Safety Precautions
Plug in the power plug prop-
erly.
• Otherwise, it will cause electric
shock or fire.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electric shock or fire.
Do not damage or use an
unspecified power cord.
• It will cause electric shock or fire.
4Room Air Conditioner
Safety Precautions
Plug in the power plug prop-
erly.
• Otherwise, it will cause electric
shock or fire.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electric shock or fire.
Do not damage or use an
unspecified power cord.
• It will cause electric shock or fire.
4Room Air Conditioner
Safety Precautions
Plug in the power plug prop-
erly.
• Otherwise, it will cause electric
shock or fire.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electric shock or fire.
Do not damage or use an
unspecified power cord.
• It will cause electric shock or fire.
Do not modify power cord
length.
• It will cause electric shock or fire
Use the air conditioner on a
single outlet circuit.(See page
7.) Do not share the outlet
with other appliances.
Always plug into a grounded
outlet.
• No grounding may cause electric
Unplug the unit if strange
sounds, odors, or smoke
come from it.
• Otherwise it will cause fire and
electric shock accident.
Do not use the socket if it is
loose or damaged.
• It may cause fire and electric
Do not operate with wet
hands or in damp environ-
ment.
• It ma cause electric shock.
OperationOperationOperationOperation
ON
• It will cause electric shock or fire.
shock.
shock.

Service Manual 5Service Manual 5Service Manual 5Service Manual 5
Close all doors, windows and other outside
openings to the room.
• The air conditioner must be operated in a enclosed
area to be most effective.
Ventilate before operating air conditioner
when gas goes out.
• It may cause explosion, fire, and burn.

Do not clean the air conditioner with water.If water enters the product, turn off the power
switch of the main body of appliance. Contact
service center after taking the power plug ut
from the socket.
• Water may enter the unit and degrage the insulation.
It may cause an electric shock.
CAUTION
Installation
• There is risk of fire or electric shock.
Never touch the metal parts
of the unit when removing
the filter.
• They are sharp and may cause
injury.
Do not block the inlet or out-
let.
• It may cause failure of appliance or
performance deteriorate.
Ensure that the outer case is
not damaged by age or wear.
• If the outer case is damaged, it
must be repaired or replaced
immediately. Leaving it damaged
could result in the air conditioner
falling out of the window, creating
a safety hazard.

• Since the fan rotates at high speed
during operation, it may cause
injury.
• This could injury the pet or plant. • It is an air conditioner, not a preci-
sion refrigeration system.
6Room Air Conditioner6Room Air Conditioner6Room Air Conditioner6Room Air Conditioner
Unplug the air conditioner
before cleaning it.
Do not put a pet or nouse
plant where it will be exposed
to direct air flow
Do not use this appliance for
special purposes such as
pets, foods, precision
machinery, or objucts of art.
Be cautious not to touch the
sharp edges when installing
• It may cause injury.
Hold the plug by the head
when taking it out.
• It may cause electric shock and
damage.
Unplug the air conditioner if
it will not be used for a long
period.
• It will waste power consumption in
vain and it may cause accident.
Sharp
edges
Always insert the filter
securely. Clean it every two
weeks.
• Operation without filters will cause
failure.
Use a soft cloth to clean. Do
not use wax, thinner, or a
strong detergent.
• The appearance of the air condi-
tioner may deteriorate, change
color, or develop surface flaws.
Do not drink water drained
from air conditioner. Do not
direct airflow at room occu-
pants only.
• It is not sanitary and could cause
illness or personal injury hazard.
Wax
Thinner
Wax
Thinner
OperationOperation

Service Manual 7
Dimensions
Dimensions
H
D
W
W mm(inch) 439(17 5/16")
H mm(inch) 283(11 1/8")
D mm(inch) 326(12 13/16")
Model
Dimension
All Model
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

8Room Air Conditioner
Product Specifications
Product Specifications
SPECIFICATIONS ARE SUBJECT TO MINOR CHANGE WITHOUT NOTICE FOR FURTHER
IMPROVEMENT.
8Room Air Conditioner
Product Specifications
Product Specifications
SPECIFICATIONS ARE SUBJECT TO MINOR CHANGE WITHOUT NOTICE FOR FURTHER
IMPROVEMENT.
8Room Air Conditioner
Product Specifications
Product Specifications
SPECIFICATIONS ARE SUBJECT TO MINOR CHANGE WITHOUT NOTICE FOR FURTHER
IMPROVEMENT.
8Room Air Conditioner
Product Specifications
Product Specifications
SPECIFICATIONS ARE SUBJECT TO MINOR CHANGE WITHOUT NOTICE FOR FURTHER
IMPROVEMENT.
NOTICE
COOLING CAPACITY (BTU/h) 5,050
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60HZ
INPUT (W) 520
OPERATING CURRENT (AMP.) 4.8
REFRIGERANT CONTROL CAPILLARY TUBE
REFRIGERANT CHARGE (R-22)
205g(7.2 Oz)
INSIDE FAN TURBO
OUTSIDE FAN ROPELLER FAN WITH SLINGER RING
AIR DISCHARGE 2-WAY (RIGHT AND LEFT)
CHASSIS TOP-DOWN
PROTECTOR
TEMPERATURE CONTROL THERMISTOR
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR FOR FAN MOTOR
GL5004
MODELS
ITEMS
COOLING CAPACITY (BTU/h) 5,050
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60HZ
INPUT (W) 520
OPERATING CURRENT (AMP.) 4.8
REFRIGERANT CONTROL CAPILLARY TUBE
REFRIGERANT CHARGE (R-22)
205g(7.2 Oz)
INSIDE FAN TURBO
OUTSIDE FAN ROPELLER FAN WITH SLINGER RING
AIR DISCHARGE 2-WAY (RIGHT AND LEFT)
CHASSIS TOP-DOWN
PROTECTOR
TEMPERATURE CONTROL THERMISTOR
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR FOR FAN MOTOR
MODELS
ITEMS
COOLING CAPACITY (BTU/h) 5,050
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60HZ
INPUT (W) 520
OPERATING CURRENT (AMP.) 4.8
REFRIGERANT CONTROL CAPILLARY TUBE
REFRIGERANT CHARGE (R-22)
205g(7.2 Oz)
INSIDE FAN TURBO
OUTSIDE FAN ROPELLER FAN WITH SLINGER RING
AIR DISCHARGE 2-WAY (RIGHT AND LEFT)
CHASSIS TOP-DOWN
PROTECTOR
TEMPERATURE CONTROL THERMISTOR
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR FOR FAN MOTOR
MODELS
ITEMS
COOLING CAPACITY (BTU/h) 5,050
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60HZ
INPUT (W) 520
OPERATING CURRENT (AMP.) 4.8
REFRIGERANT CONTROL CAPILLARY TUBE
REFRIGERANT CHARGE (R-22)
205g(7.2 Oz)
INSIDE FAN TURBO
OUTSIDE FAN ROPELLER FAN WITH SLINGER RING
AIR DISCHARGE 2-WAY (RIGHT AND LEFT)
CHASSIS TOP-DOWN
PROTECTOR
TEMPERATURE CONTROL THERMISTOR
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR FOR FAN MOTOR
MODELS
ITEMS

Service Manual 9
Window Requirements
All supporting parts should be secured to firm
wood, masonry, or metal.
1. This unit is designed for installation in standard double
hung windows with actual opening widths of 21" to 35".
The upper and lower sash must open sufficiently to allow
a clear vertical opening of 12" from the bottom of the
sash to the window stool.
2. If storm window presents interference, fasten a 2" wide
wood strip to the inner window sill across the full width of
the sill. The wood strip should be thick enough to raise
the height of the window sill so that the unit can be
installed without interference by the storm window frame.
See Figure. 3. Top of wood strip should be approximately
3/4" higher than the storm window frame (STORM WIN-
DOW FRAME) or wood strip (OUTDOORS) to help con-
densation to drain properly to the outside.
3. Install a second wood strip (approximately 6" long by
11/2" wide and same thickness as first strip) in the center
of the outer sill flush against the back off the inner sill.
This will raise the L bracket as shown Figure. 3.
4. If the distance between STORM WINDOW FRAME and
WOOD STRIP MOUNTED ON TOP OF INNER SILL is
more than 1", two of wood strip are not necessary.
NOTICE
Installation
Installation
Select the Best Location
How to Install
This air conditioner is designed with a button-down chassis so it can be easily installed in a window.
1. To prevent vibration and noise, make sure the unit is
installed securely and firmly.
2. Install the unit where the sun does not shine directly on
the unit.
3. The outside of the cabinet must extend outward for at
least 10" and there should be no obstacles, such as a
fence or wall, within 20" from the back of the cabinet
because it will prevent heat radiation of the condenser.
Restriction of outside air will greatly reduce the cooling
efficiency of the air conditioner.
CAUTION: All side louvers of the cabinet
must remain exposed on the outdside of
the structure.
4. Install the unit slanted slightly so the back is slightly
lower than the front (about 1/4"). This will force con-
densed water to the outside.
5. Install the unit with the bottom about 30"~60" above the
floor level.
ABOUT / "
Over 20"
HEAT
RADIATION
FENCE
AWNING
OUTSIDE
INSIDE
COOLED AIR
30"-60"
12
OUTDOORSINDOORS
INNER SILL
OUTER
SILL
INNER
SILL
WOOD STRIP MOUNTED
ON TOP OF INNER SILL
WOOD STRIP
FOR
L BRACKET
3/4"
CLEARANCE
1" MAX.
STORM
WINDOW
FRAME
OUTDOORSINDOORS
OUTER
SILL
Figure 1
Figure 2
Figure 3

10 Room Air Conditioner
Installation
Installation Kits Contents(some Models)
Before Installation (Some Models Including
Installation Kit)
1. Insert the guide panels into the guides of the air conditioner.
Fasten the curtains to the unit with screws (TYPE A), as shown
Figure. 4.
2. Cut the adhesive-backed seal strip (TYPE E) to the window
width.
Remove the backing from the seal strip and attach the seal strip
to the underside of the bottom window. (Figure. 5)
Start Installation (Some Models Including
Installation Kit)
1. Locating Unit in Window
Open the window and mark center line with pencil on the center
of the inner sill, as shown in Figure. 6.
2. Attach L Bracket
a. Install the L brackets behind the inner window sill, with the
short side of bracket as shown. Use the 2 screws (TYPE A)
provided.
b. The bracket helps to hold unit securely in place. Be sure to
place bracket edge flush against back of inner sill. See
Figure.7.
HARDWARE
TYPE F: 1EA
(SASH SEAL)
(Not adhesive backed)
TYPE E: 1EA
(SEAL STRIP)
(Adhesive backed)
TYPE G: 2EA
(GUIDE PANEL)
TYPE D: 3EA
( L BACKET)
TYPE A: 14EA
(SHORT SCREW)
10mm
TYPE B: 2EA
(WOOD SCREW)
16mm
TYPE H: 1EA
(UPPER GUIDE)
16mm
TYPE C: 2EA
(WOOD SCREW)
ROOM SIDE
CENTER LINE
INNER SILL
SEAL STRIP
(TYPE E)
OUTSIDE
INSIDE
L BRACKET
OUTER SILL
INNER SILL
TYPE A
7.5"
7.5"
CENTER LINE
TYPE A
TYPE A
TYPE A
Figure 4
Figure 5
Figure 6
Figure 7