LG LW1812HR/00 User manual

OWNER’S MANUAL
AIRCONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
P/NO:MFL67462101
www.lgappliances.com
TYPE:WINDOW
MODELS:LW1812HR,LW2412HR

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

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
Evaporator
Electric Heater
Control Board
Brace
Vertical Air Deflector
(Horizontal Louver)
Horizontal Air Deflector
(Vertical Louver)
Air Discharge
Cabinet
Front Grille Air Filter
Air Intake(Inlet Grille)
Condenser
Base Pan
Compressor
Power Cord
Remote Controller

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.
<
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 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
29" to 41"
18" min
Offset
Less
than 1 1/4"
Sill
Exterior
Interior wall
26" min.
(Without frame curtain)
Stool
Foam-PE
(Adhesive-Backed)
Type C (5) Type D (2)
Type A (11)
Carriage Bolt (2) Lock Nut (4)
Type B (7)
Foam strip
(Plain-Back)
Right frame
curtain
Window locking
bracket
Left frame
curtain
Frame guide(2)
Sill
bracket (2)
Support bracket(2)
Drain joint pipe

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.
Foam-PE
Top retainer bar
Screw
(Type A)
Screw(Type A)
Frame guide
Shipping screws
Fig. 1
Fig. 2
Fig. 3
Fig. 4

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
Support
Bracket
Lock nut
Sill
Bracket
Carriage
Bolt
(M-Screw)
Front angle
Window stool
Window sash Top retainer bar
Cabinet
Foam-PE
Frame curtain
Screw(Type B)
Front Angle
Sash track
Foam-PE
Cabinet
Track hole
Support
Bracket
Carriage bolt
and lock nut
Machine screw(Type D)
and lock nut
Outer edge
of window
sill
Screw(Type B)
Sill bracket
Top
retainer
bar
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Owner’s Manual 15
ENGLISH
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. 10)
7.
Slide the unit into the cabinet.(See Fig. 11)
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. 12)
9.
Attach the Window locking bracket with a screw
(Type C.) (See Fig. 13)
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.14)
Lift the inlet grille and secure it with a screw (Type
A) through the front grille.(See Fig. 14)
Window installation of room air conditioner is now
completed. See ELECTRICAL DATA for attaching
power cord to electrical outlet.
Power Cord
Screw (Type A)
Screw
Window locking
bracket
Foam-Strip
Screw(Type C)
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
3.
4.

16 Room Air Conditioner
1. POWER BUTTON
To turn the air conditioner ON, push the button. To turn the air conditioner OFF, push the button again.
This button takes priority over any other buttons.
2. OPERATION MODE SELECTION BUTTON
Everytime you push this button, it will toggle COOL, FAN and HEAT.
3. ON/OFF TIMER BUTTON
Everytime you push this button, timer is set as follows.(1Hour 2Hours 3Hours 4Hours 5Hours
6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours Cancel)
4. FAN SPEED SELECTOR
Everytime you push this button, it is set as follows. (Hi[ ] Low[ ] Hi[ ]....)
5. ROOM TEMPERATURE SETTING BUTTON
This button can automatically control the temperature of the room. The temperature can be set within a
range of 60°F to 86°F by 1°F.
Operating Instructions
You will usually use shut-off time while you sleep.
For your sleeping comfort,once timer is set,the temperature setting will raise 2 F after
30min and once again after another 30min.
。
Cool:
Heater runs and heats the room.
Compressor runs and cools the room.
Use the and FAN buttons to set the desied temperature
and circulation fan speed.
Fan ：
Fan circulate air but compressor does not run.
Use the FAN button to set the desired fan speed.
Heat：
Use the and FAN buttons to set the desied temperature
and circulation fan speed.
Remote control
The remote control and control panel will look like one of the following pictures.
Power
Temp
Fan Speed
Timer Mode
Energy
Saver Auto Swing
1
4
2
67
3
5
REMOTE CONTROLLER
1
7
8
5
46
2 3
Operating Instructions

Owner’s Manual 17
6. AUTO SWING
This button can automatically control the air flow direction.
7. ENERGY SAVER
The fan stops when the compressor stops cooling.
Approximately every 3 munutes the fan will turn on and check the room air to determine if cooling is needed.
8. REMOCON SIGNAL RECEIVER
ENGLISH
Operating Instructions
When the air conditioner has been performed its cooling operation and is turned off or set to the fan
position, wait at least 3 minutes before resetting to the cooling operation again.
AUTO RESTART
When power is restored after an electrical power failure, the unit will begin to run at its last setting.
A slight heat odor may come from the unit when first switching to HEAT after the cooling
season is over. This odor, caused by fine dust particles on the heater, will disappear quickly.
y
battery
battery
battery.
battery
battery
one

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.
The direction of air can be controlled wherever you
want to cool by adjusting the horizontal louver and the
vertical louver.
• HORIZONTAL AIR-DIRECTION CONTROL
To control horizontal direction of air flow, set to the
ON position the air-swing switch and the air flow will
be swept horizontally by the automatic air-swing
system.
If you want to stop the air flow from moving, switch off
the air swing switch at the desired position of the
vane.
• VERTICAL AIR-DIRECTION CONTROL
The vertical air direction is adjusted by moving the
horizontal louver.
Part A
Part B
VENTCLOSE OPEN
Before using the ventilation feature,
position the lever, as shown. First, pull down
part to horizontal line with part .
NOTICE
Air Direction

Owner’s Manual 19
ENGLISH
Operating Instructions
How to Attach Drain Pan(Optional)
How to Connect a Drain Hose
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).
A drain hole is provided at the rear of the air conditioner unit.
Select a drain method according to the following.
1. Remove the hole rubber from the base-pan. (for some models)
2. Connect a drain hose of 9/16" inside diameter to the drain pipe as
shown in Fig. 1.
3. Or connect a pipe elbow of 9/16" inside diameter to the drain pipe,
then connect a drain hose of 9/16" inside diameter to the pipe
elbow as shown in Fig. 2.
CABINET
DRAIN
PAN
DRAIN HOSE
SCREW
DRAIN PIPE
DRAIN HOSE
DRAIN PIPE
DRAIN ELBOW
DRAIN HOSE
Fig. 1
Fig. 2

20 Room Air Conditioner
Maintenance and Service
Maintenance and Service
TURN THE AIR CONDITIONER OFF AND REMOVE THE PLUG FROM THE POWER OUTLET.
he air filter should be checked at least twice a month to see if cleaning is necessary. Trapped particles in the
filter will build up and block the airflow. This reduces the cooling capacity and also causes an accumulation of
frost on the cooling coils.
1. Open the inlet grille upward by pulling out the bottom of the inlet grille.(a)
In another case, you can open the inlet grille downward by pulling out the top of the inlet grille.(b)
2. Remove the air filter from the front grille assembly by pulling the air filter up or down slightly.
3. Wash the filter using lukewarm water below 40°C (104°F).(c)
4. Gently shake the excess water from the filter completely. Replace the filter.
Mark ∆of inlet grille means opening direction.
NOTICE
Air Filter Cleaning
How to Attach Front Grille to Cabinet
1. Pull down front grille from the cabinet top.
2. Push front grille’s tips toward the cabinet in order
to insert front grille’s tabs into
the cabinet.
3. Open the inlet grille.
4. Tighten the screw through the front grille into the
plate of the evaporator or base pan.
5. Close inlet grille.
NOTICE
When the unit operateson extremely hot weather , it turnsoff automatically to protect compressor.