LG LW1812HR/00 Owner’s Manual
OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE:WINDOW
MODELS:LW1812HR,LW2412HR
P/NO:MFL67462101
www.lgappliances.com
2 Room 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
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
8 Room 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
Vertical Air Deflector
(Horizontal Louver)
Horizontal Air Deflector
(Vertical Louver)
Cabinet
Front Grille Air Filter
Electric Heater
Air Discharge
Air Intake(Inlet Grille)
Remote Controller
Brace
Condenser
Base Pan
Compressor
Power Cord
Control Board
Evaporator
Electrical Safety
ENGLISH
Electrical Safety
Electrical Data
115V~ 230V~
NOTICE
The shape may be different according to its model.
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.
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.
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.
Use 20 AMP. time
delay fuse or 20 AMP.
Standard 250V, 3-wire grounding
receptacle rated 20A, 250V AC
circuit breaker.
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.
The conductors inside this cord are
surrounded by shields, which monitor
leakage current.
These shields are not grounded.
<
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.
Owner’s Manual 9
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.
10 Room Air Conditioner
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 20A, 250V.
Owner’s Manual 11
ENGLISH
Installation
Installation
How to Install the Unit
How to Use the Reversible Inlet Grille(For Some Models)
1. To avoid 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.
If the unit receives direct sunlight, build an awning to shade the cabinet.
3. There should be no obstacle, like a fence, within 20” which might restrict heat radiation from the condenser.
4. To prevent reducing performance, install the unit so that louvers of the cabinet are not blocked.
5. Install the unit a little obliquely outward not to avoid leaking the condensed water into the room (about 1/2”
or 1/4 bubble with level).
6. Install the unit with its bottom portion 30~60” above the floor level.
7. Stuff the foam between the top of the unit and the wall to prevent air and insects from getting into the room.
8. The power cord must be connected to an independent circuit. The green wire must be grounded.
9. Connect the drain tube to the base pan hole in the rear side if you need to drain (consult a dealer.)
Plastic hose or equivalent may be connected to the drain tube.
The grille is designed to clean the filter both upward and downward.
A. Before attaching the front grille to the cabinet, if you want to pull out the filter upward;
1. Open the inlet grille slightly (a).
2. Turn inside out the front grille (a).
3. Disassemble the inlet grille from the front grille with separating the hinged part by inserting a straight type
screw-driver tip (b).
4. Then, rotate the inlet grille 180 degrees and insert the hooks into bottom holes of the front grille.
5. Insert the filter and attach the front grille to the cabinet.
B. If you want to pull out the filter downward;
The grille is already designed that way.
About 1/2"
Over 20"
HEAT
RADIATION
FENCE
AWNING
INSIDE OUTSIDE
FOAM
COOLED
AIR
30-60"
Level
1/4 Bubble
(b)
b
(a) (c)
12 Room Air Conditioner
Installation
Window Requirements
Installation Kits Contents
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 from 29" to 41".
The top and bottom window sashes must open sufficiently to
allow a clear vertical opening of 18" from the bottom of the
upper sash to the window stool.
2. The stool offset (height between the stool and sill) must be
less than 1 1/4".
NOTICE
Left frame
curtain
18" min
Interior wall
(Without frame curtain)
Foam strip
(Plain-Back)
29" to 41"
Stool
26" min.
Foam-PE
(Adhesive-Backed)
Offset
Less
than 1
Sill
Exterior
Drain joint pipe
1
/4"
Frame guide(2)
Window locking
bracket
bracket
Sill
Type A (11)
(2)
Type B (7)
Support bracket(2)
Type C (5) Type D (2)
Right frame
curtain
Carriage Bolt (2) Lock Nut (4)
Owner’s Manual 13
ENGLISH
Installation
Suggested Tool Requirements
SCREWDRIVER(+, -), 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 out 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-PE to
the underside of the window sash.
4.
5.
6.
Insert the Frame guides into the bottom of the
cabinet.
Insert the Frame Curtain into the Top retainer bar
and Frame guides.
Fasten the curtains to the unit with 10 screws
(Type A) at both sides.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Shipping screws
Foam-PE
Top retainer bar
Screw
(Type A)
Frame guide
Screw(Type A)
14 Room Air Conditioner
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
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Sill
Bracket
Carriage
Bolt
(M-Screw)
Support
Bracket
Lock nut
Cabinet
Track hole
Support
Bracket
Carriage bolt
and lock nut
Top
retainer
bar
Window sash
Foam-PE
Cabinet
Frame curtain
Top retainer bar
Foam-PE
Machine screw(Type D)
and lock nut
Outer edge
of window
sill
Screw(Type B)
Sill bracket
Front angle
Window stool
Sash track
Screw(Type B)
Front Angle
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