LG LWHD2500ER User manual

LG
Window-Type Air Conditioner
OWNER'S MANUAL
LG
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
ENGLISH ESPAÑOL
IMPORTANT
Please read through this manual. It contains valuable
information about your air conditioner.This manual may
help save time and money by explaining proper air
conditioner maintenance and preventing improper use.
PRECAUTIONS
Pay close attention to precautions in order to prevent
potential hazards and damage from misuse or improper
installation. LG is not responsible for any damages
caused by misuse of the air conditioner.
MODELS, MODELOS: LWHD2500ER

2Room Air Conditioner
Window-Type Air Conditioner Owner’s Manual
TABLE OF CONTENTS
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
■Staple your receipt to this page in the event you need it
to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use and
maintain your air conditioner properly. Just a little preventive
care on your part can save you a great deal of time and
money over the life of your air conditioner.
You'll find many answers to common problems in the chart
of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call for
service at all.
PRECAUTION
•Contact the authorized service technician for repair
or maintenance of this unit.
• Contact the installer for installation of this unit.
• The air conditioner is not intended for use by young
children or invalids without supervision.
• Young children should be supervised to ensure that
they do not play with the air conditioner.
• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel only
using only genuine replacement parts.
• Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.
Safety Precautions..........................3
Before Operation.............................7
Introduction ....................................8
Electrical Safety ..............................9
Installation ....................................11
Operating Instructions .................16
Maintenance and Service ............20

Owner’s Manual 3
ENGLISH
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.
WARNING
■Installation
Be sure not to do.
Be sure to follow the instruction.
Don’t use a power cord, a
plug or a loose socket which
is damaged.
• Otherwise, it may cause a fire
or electrical shock.
Always plug into a grounded
outlet.
• Otherwise, it may cause a fire
or electrical shock.
Do not modify or extend the
power cord length.
• It will cause electric shock or fire
due to heat generation.
Do not disassemble or
modify products.
• It may cause failure and
electric shock.
Be caution when unpacking
and installing.
• Sharp edges may cause
injury.
Do not use the power cord near
flammable gas or combustibles
such as gasoline, benzene,
thinner, etc.
• It may cause explosion or fire.
Gasolin

4Room Air Conditioner
Safety Precautions
■Operation
Do not place the power cord
near a heater.
• It may cause fire and electric
shock.
Do not allow water to run
into electric parts.
• It will cause failure of machine or
electric shock.
Use a soft cloth to clean. Do
not use wax, thinner, or a
strong detergent.
• The appearance of the air
conditioner may deteriorate,
change color, or develop surface
flaws.
Wax
Thinner
Ventilate the room well when
using this appliance
together with a stove, etc.
• An oxygen shortage may occur.
Turn off the power and
breaker firstly when
cleansing the unit.
• Since the fan rotates at high
speed during operation, it may
cause injury.
Turn off the main power
switch when not using it for
a long time.
• Prevent accidental startup and
the possibility of injury.
Unplug the unit if strange
sounds, odors, or smoke
come from it.
• Otherwise it may cause fire and
electric shock accident.
Do not open the suction
inlet grill of the product
during operation.
• Otherwise, it may electrical
shock and failure.
If water enters the product, turn
off the the power switch of the
main body of appliance. Contact
service center after taking the
power-plug out from the socket.
Do not place heavy object
on the power cord and take
care so that the cord should
not be pressed.
• There is danger of fire or electric
shock.
Do not share the outlet with
other appliances.
• It will cause electric shock or fire
due to heat generation.
Take the power plug out if
necessary, holding the head
of the plug and do not touch
it with wet hands.
• Otherwise, it may cause a fire
or electrical shock.

Owner’s Manual 5
ENGLISH
Safety Precautions
CAUTION
■Installation
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electric shock or fire
due to heat generation.
Do not damage or use an
unspecified power cord.
• It will cause electric shock or fire.
Do not operate with wet
hands or in damp
environment.
• It will cause electric shock.
Hold the plug by the head
when taking it out.
• It may cause electric shock and
damage.
When gas leaks, open the
window for ventilation
before operating the unit.
• Otherwise, it may cause
explosion, and a fire.
Never touch the metal parts
of the unit when removing
the filter.
• They are sharp and may cause
injury.
Install the product so that the noise or hot
wind from the outdoor unit may not cause
any damage to the neighbors.
• Otherwise, it may cause dispute with the
neighbors.
Keep level parallel in installing the product.
• Otherwise, it may cause vibration or water
leakage.

6Room Air Conditioner
Safety Precautions
■Operation
Be cautious not to touch the
sharp edges when
installing.
• It may cause injury.
Avoid excessive cooling and
perform ventilation
sometimes.
• Otherwise, it may do harm to
your health.
Do not insert the hands or
bars through the air inlet or
outlet during operation.
• Otherwise, it may cause
personal injury.
Do not put a pet or house
plant where it will be
exposed to direct air flow.
• It may cause injury.
Do not block the inlet or
outlet of air flow.
• It may cause product failure.
Use a soft cloth to clean. Do
not use wax, thinner, or a
strong detergent.
• The appearance of the air
conditioner may deteriorate,
change color, or develop surface
flaws.
Do not step on the
indoor/outdoor unit and do
not put anything on it.
• It may cause an injury through
dropping of the unit or falling
down.
Always insert the filter
securely.
Clean it every two weeks.
• Operation without filters will
cause failure.
Do not drink water drained
from air conditioner.
• It contains containments and will
make you sick.

Before Operation
Owner’s Manual 7
ENGLISH
Before Operation
1. Contact an installation specialist for installation.
2. Plug in the power plug properly.
3. Use a dedicated circuit.
4. Do not use an extension cord.
5. Do not start/stop operation by plugging/unplugging the power cord.
6. If the cord/plug is damaged, replace it with only an authorized replacement
part.
1. Being exposed to direct airflow for an extended period of time could be
hazardous to your health. Do not expose occupants, pets, or plants to direct
airflow for extended periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used
together with stoves or other heating devices.
3. Do not use this air conditioner for non-specified special purposes (e.g.
preserving precision devices, food, pets, plants, and art objects). Such usage
could damage the items.
1. Do not touch the metal parts of the unit when removing the filter. Injuries can
occur when handling sharp metal edges.
2. Do not use water to clean inside the air conditioner. Exposure to water can
destroy the insulation, leading to possible electric shock.
3. When cleaning the unit, first make sure that the power and breaker are turned
off. The fan rotates at a very high speed during operation. There is a
possibility of injury if the unit’s power is accidentally triggered on while
cleaning inner parts of the unit.
For repair and maintenance, contact your authorized service dealer.
Preparing for Operation
Usage
Cleaning and Maintenance
Service

8Room Air Conditioner
Introduction
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
This appliance should be installed in accordance with the National Electric Code.
Introduction
Symbols Used in this Manual
Features
AIR INTAKE (INLET GRILLE)
CABINET
FRONT GRILLE
AIR FILTER
VERTICAL AIR DEFLECTOR
(HORIZONTAL LOUVER)
AIR DISCHARGE
HORIZONTAL AIR DEFLECTOR
(VERTICAL LOUVER)
BRACE
COMPRESSOR
CONDENSER
BASE PAN
EVAPORATOR
CONTROL PANEL
REMOTE CONTROLLER POWER CORD

Electrical Safety
Owner’s Manual 9
ENGLISH
Electrical Safety
Electrical Data
115V~ 230V~
Power cord may include a current
interrupter device. A test and reset button is
provided on the plug case. The device
should be tested on a periodic basis by first
pressing the TEST button and then the
RESET button. If the TEST button does not
trip or if the RESET button will not stay
engaged, discontinue use of the air
conditioner and contact a qualified service
technician.
Use Wall Receptacle Power Supply
Standard 125V, 3-wire grounding
receptacle rated 15A, 125V AC
Standard 250V, 3-wire grounding
receptacle rated 15A, 250V AC
Use 15 AMP. time
delay fuse or 15 AMP.
circuit breaker.
Use 20 AMP. time
delay fuse or 20 AMP.
circuit breaker.
Standard 250V, 3-wire grounding
receptacle rated 20A, 250V AC
Never push the test button during
operation
Otherwise this plug can damaged.
This device contains chemical, including
lead, known to the State of California to
cause cancer, and birth defects or other
reproductive harm.
Wash hands after handling.
Do not remove, modify or immerse this plug.
If this device trips, the cause it to be
corrected before further use.
The conductors inside this cord are
surrounded by shields, which monitor
leakage current.
These shields are not grounded.
<Made in Tower>
Periodically examine the cord for any
damage. Do not use this product in the
event the shields become exposed.
Avoid shock hazard, this unit can not
be user serviced opening the tamper
resistant. Sealed portion of the unit
voids all warranties and performance
claims. This unit not intended for use
as an on-off switch.
The shape may be different according to its model.
NOTICE
DO NOT USE AN EXTENSION CORD on 230,
208, and 230/208 Volt units.
All wiring should be made in accordance with local
electrical codes and regulations.
Aluminum house wiring may pose special
problems. Consult a qualified electrician.
NOTICE

10 Room Air Conditioner
Electrical Safety
Electrical Safety
IMPORTANT
(PLEASE READ CAREFULLY)
FOR THE USER'S PERSONAL SAFETY, THIS
APPLIANCE MUST BE PROPERLY GROUNDED
The power cord of this appliance is equipped with a
three-prong (grounding) plug. Use this with a standard
three-slot (grounding) wall power outlet to minimize the
hazard of electric shock. The customer should have the
wall receptacle and circuit checked by a qualified
electrician to make sure the receptacle is properly
grounded.
DO NOT CUT OR REMOVE THE THIRD (GROUND)
PRONG FROM THE POWER PLUG.
A. SITUATIONS WHEN THE APPLIANCE WILL BE
DISCONNECTED OCCASIONALLY:
Because of potential safety hazards, we strongly
discourage the use of an adapter plug. However, if you
wish to use an adapter, a TEMPORARY CONNECTION
may be made. Use UL-listed adapter, available from
most local hardware stores.
The large slot in the adapter must be aligned with the
large slot in the receptacle to assure a proper polarity
connection.
: Attaching the adapter ground terminal to the wall
receptacle cover screw does not ground the appliance
unless the cover screw is metal, and not insulated, and
the wall receptacle is grounded through the house
wiring. The customer should have the circuit checked
by a qualified electrician to make sure the receptacle
is properly grounded.
Disconnect the power cord from the adapter, using one
hand on each. Otherwise, the adapter ground terminal
might break. DO NOT USE the appliance with a broken
adapter plug.
B. SITUATIONS WHEN THE APPLIANCE WILL BE
DISCONNECTED OFTEN.
Do not use an adapter plug in these situations.
Unplugging the power cord frequently can lead to an
eventual breakage of the ground terminal. The wall
power outlet should be replaced by a three-slot
(grounding) outlet instead.
USE OF EXTENSION CORDS
Because of potential safety hazards, we strongly
discourage the use of an extension cord. However, if
you wish to use an extension cord, use a CSA
certified/UL-listed 3-wire (grounding) extension cord,
rated at 15A, 125V.

Owner’s Manual 11
ENGLISH
Installation
Installation
How to Install the Unit
1. To prevent vibration and noise, make sure the unit
is installed securely and firmly.
2. Install the unit where the sunlight does not shine
directly on the unit.
3. There should be no obstacles, such as a fence
and 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.
All side louvers of the cabinet must remain
exposed to the outside of the structure.
4. Install the unit a little slanted so the back is slightly
lower than the front (about 1/2").
This will force condensed water to flow to the
outside.
5. Install the unit with the bottom about 30"~60"
above the floor level.
About 1/2"
30"~60"
Awning
Cooled air
Fence
Over 20"
Heat
radiation
Window Requirements
All supporting parts should be secured to firm
wood, masonry, or metal.
•This unit is designed for installation in standard
double hung windows with actual opening widths
from 29"
to 41".
•The top and bottom window sash must open
sufficiently to allow a clear vertical opening of 19"
from the bottom of the upper sash to the window
stool.
NOTICE
29" to 41"
19" min.
Inner sill Offset
Window
Sash
Sill
Exterior
Interior wall
26" min.
(Without frame curtain)

12 Room Air Conditioner
Installation Kits Contents
Suggested Tool Requirements
Installation
NO. NAME OF PARTS Q'TY
1 FRAME CURTAIN 2
2 SUPPORT BRACKET 2
3 SILL BRACKET 2
4 LOCK NUT 4
5 SCREW (TYPE A) 14
6 SCREW (TYPE B) 7
7 SCREW (TYPE C) 5
8 SCREW (TYPE D) 2
9 CARRIAGE BOLT 2
10 FOAM STRIP 1
11 FOAM SEAL 1
12 WINDOW LOCKING BRACKET 1
13 DRAIN PIPE 1
14 FRAME GUIDE 2
15 FOAM-PE 1
1 2 3 4 5
6 7 8 9 10
11
14 12 13
15
SCREWDRIVER(Philips and Flatead), RULER, KNIFE, HAMMER, PENCIL, LEVEL
PREPARATION OF CHASSIS
1. Remove the screws which fasten the cabinet at
both sides and at the back.
2. Slide the unit from the cabinet by gripping the
base pan handle and pulling forward while bracing
the cabinet.
3. Cut the window sash seal to the proper length.
Peel off the backing and attach the Foam-Seal
to the underside of the window sash.
4. Remove the backing from the top upper guide
Foam-PE and attach it to the bottom of the
Upper Guide.
5. Attach the upper guide onto the top of the cabinet
with 3 Type A screws .
6. Insert the Frame Guides into the bottom of the
cabinet.
7. Insert the Frame Curtain into the Upper Guide
and Frame Guides .
8. Fasten the curtains to the unit with 10 Type
A screws .
11
15
(Type A)
5
(Type A)
Upper Guide
Upper Guide
5
14
Shipping
Screws

Owner’s Manual 13
ENGLISH
Installation
Cabinet Installation
1. Open the window. Mark a line on the center of the
window stool between the side window stop
moldings.
Loosely attach the sill bracket to the support
bracket using the carriage bolt and the lock nut.
2. Attach the sill bracket to the window sill using the
screws (Type B).
Carefully place the cabinet on the window stool
and align the center mark on the bottom front with
the center line marked window stool.
3. Using the M-screw and the lock nut, attach the
support bracket to the cabinet track hole. Use the
first track hole after the sill bracket on the outer
edge of the window sill. Tighten the carriage bolt
and the lock nut. Be sure the cabinet slants
outward.
Do not drill a hole in the bottom pan. The unit is
designed to operate with approximately 1/2" of
water in bottom pan.
4. Pull the bottom window sash down behind the Top
retainer bar until they meet.
1. Do not pull the window sash down so tightly
that the movement of Frame curtain is restricted.
Attach the cabinet to the window stool by driving
the screws (Type B) through the cabinet into
window stool.
2. The cabinet should be installed with a very slight
tilt downward toward the outside.
NOTICE
3
9
2
6
3
15
11
2
4
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Support
Bracket
Lock nut
Sill
Bracket
Carriage
Bolt
Front angle
Window stool
Window sash Upper Guide
Cabinet
Foam
-Seal
Frame curtain
Foam-PE
(Type B)
Cabinet
Track hole
Support
Bracket
Carriage bolt
and lock nut
Machine screw(Type D)
and lock nut
Outer edge
of window
sill
Sill bracket
Upper
Guide

14 Room Air Conditioner
Installation
5. Pull each Frame curtain fully to each window sash
track, and pull the bottom window sash down
behind the Top retainer bar until it meets.
6. Attach each Frame curtain the window sash by
using screws (Type C.) (See Fig. 6)
7. Slide the unit into the cabinet.(See Fig. 7)
For security purpose, reinstall screws(Type A)
at cabinet's sides.
8. Cut the Foam-strip to the proper length and insert
between the upper window sash and the lower
window sash.(See Fig. 8)
9. Attach the Window locking bracket with a screw
(Type C.) (See Fig. 9)
(Type C)
6
7
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Screw(Type B)
Front Angle
Sash track
Window locking
bracket
Foam-Strip
Screw
Screw
Power Cord

Owner’s Manual 15
ENGLISH
Installation
10. Attach the front grille to the cabinet by inserting
the tabs on the grille into the tabs on the front of
the cabinet. Push the grille in until it snaps into
place. (See Fig.10)
11. Lift the inlet grille and secure it with a screw
(Type A) through the front grille.(See Fig. 10)
12. Window installation of room air conditioner is now
completed. See ELECTRICAL DATA for attaching
power cord to electrical outlet.
Fig. 10
Installing the Power cord
You can choose between two methods below according to your window stool shape and preference.
•Fasten the stopper using 2 screw holes, and lead
out the power cord through slit "A".
•Fasten the stopper using left screw hole, and rotate
properly to lead the power cord out through slit "B".
Using slit "A" Using slit "B"
B
A
Power Cord
Power Cord

16 Room Air Conditioner
Operating Instructions
Operating Instructions
Remote Control Operations
Power
Te m p
Fan Speed
Timer Mode
1
2
3
4
5
'
F
TIMER POWERMODE
TEMP
FAN
SPEED
F1 LOW
F2 MED
F3 HIGH
Dry Timer
Fan
Energy
Saver
Cool
1
2
6
3 45
The remote control and control panel will look like those represented in the following pictures.

Owner’s Manual 17
ENGLISH
Operating Instructions
1. POWER
Operation starts when this button is pressed and stops when you press the button again.
2. TEMPERATURE CONTROL
The thermostat monitors room temperature to maintain the desired temperature.
The thermostat can be set between 60°F~86°F (16°C~30°C).
The unit takes an average of 30 minutes to adjust the room temperature by 1°F.
3. OPERATION MODE SELECTOR
Select cooling mode to cool the room.
Select energy saver mode for energy saving operation.
Select fan mode for basic ventilating fan operation.
Select dry mode for dry operation.
4. FAN SPEED SELECTOR
For increased power while cooling, select a higher fan speed.
3 steps: High ➔Low ➔Med
5. ON/OFF TIMER
The timer can be set to start and stop the unit in hourly increments (up to 12 hours).
6. REMOTE CONTROL SENSOR
AUTO RESTART
In failure of electric power, the unit runs as previous setting operation.
1. Push out the cover on the back of the remote control with your thumb
2. Pay attention to polarity and insert two new AAA 1.5V batteries.
3. Reattach the cover.
Do not use rechargeable batteries. Make sure that both batteries are new.
Do not mix alkaline, standard(Carbon-zinc) or rechargeable(Nickel-cadmium)
batteries.
•In order to prevent discharge, remove the batteries from the remote control if the
air conditioner is not going to be used for an extended period of time
Keep the remote control away from extremely hot or humid places.
To maintain optimal operation of the remote control, the remote sensor should
not be exposed to direct sunlight.
•The remote control can be mounted on a wall using the mountable holder.
NOTICE
Inserting the Remote Control Batteries

18 Room Air Conditioner
Operating Instructions
Ventilation
The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions.
When fresh air is necessary in the room, set the ventilation lever to the OPEN position.
The damper is opened and room air is drawn out.
VENTCLOSE OPEN
Part A Part B
Before using the ventilation feature, position the lever, as
shown. First, pull down part to horizontal line with part .
NOTICE
Air Direction
Recommended orientation of louvers
Adjust louvers to face upwards when cooling to maximize cooling efficiency.
Airflow can be adjusted by changing the direction of the air conditioner's louvers. This can also increase the
cooling efficiency of the air conditioner.
Adjusting horizontal air flow Adjusting vertical air flow
Adjusting Horizontal Air Flow
Direction
Adjusting the vertical louvers left and right will
change horizontal airflow.
Adjusting Vertical Air Flow Direction
Adjusting the horizontal vane up and down will
change vertical airflow. The vane can be adjusted by
nudging the vane backward or forward.

Owner’s Manual 19
ENGLISH
Operating Instructions
How to Attach Drain Pan(Optional)
The air conditioner employs a proper drain method whereby the condensed water (moisture removed from the
air) is drained to the outside.
In very humid weather, (and for reverse cycle models in the reverse mode) excessive condensate water
removed from the air may cause some water to collect. To remove this excess water you can install the drain
pan as detailed below.
1. Take the drain pan which is located in the air discharge.
2. Remove the hole rubber from the base-pan (for some models).
3. Install the drain pan to the right corner of the cabinet with 4 (or 2)
screws.
4. Connect the drain hose of 3/5" inside diameter to the outlet located
at the bottom of the drain pan.You can purchase the drain hose or
tubing locally to satisfy your particular needs. (Drain hose is not
supplied).
CABINET
DRAIN
PAN
DRAIN HOSE
SCREW

20 Room Air Conditioner
Maintenance and Service
Maintenance and Service
Turn the power off and unplug the power plug before cleaning the air conditioner.
Air Filter
Drainage
The air filter behind the inlet grille should be checked and cleaned at least once every 2 weeks (or as
necessary) to maintain optimal performance of the air conditioner.
How to remove the air filter
1. The grille may be opened from the top for easy
maintenance after installation.
2. Open the inlet grille by pulling off the exposed door
on the top of the unit (based on installation).
3. Pull the tab slightly to release the filter. Pull the
filter in the same direction as the opening.
4. Clean the filter with warm, soapy water. The water
should be below 40°C (104°F).
5. Rinse off and gently shake off excess water from
the filter. Let it dry before replaceing it.
Drain pipe
Drain cap
The base pan may overflow due to high humidity. To drain the
excess water, remove the drain cap from the back of the unit
and secure the drainpipe.
When pressing the drainpipe into place, apply force in the
direction away from the fins to avoid injuring yourself.