OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating your set and retain it for future reference.
TYPE : WINDOW
P/NO : MFL67740301 |
www.lg.com |
Window-Type Air Conditioner Owner’s Manual
TABLE OF CONTENTS
Safety Precautions .......................... |
3 |
Before Opeation .............................. |
7 |
Introduction .................................... |
8 |
Installation ...................................... |
9 |
Operating Instructions ................. |
14 |
Maintenance and Service ............ |
21 |
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.
2 Room Air Conditioner
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.
WARNING |
This symbol indicates the possibility of death or serious injury. |
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CAUTION |
This symbol indicates the possibility of injury or damage to properties only. |
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■ Installation
Don’t use a power cord, a plug or a loose socket which is damaged.
•Otherwise, it may cause a fire or electrical shock.
Do not disassemble or modify products.
•It may cause failure and electric shock.
Always ground the product.
•There is risk of fire or electric shock.
Be caution when unpacking and installing.
•Sharp edges may cause injury.
Do not modify or extend the power cable.
•There is risk of fire or electric shock.
Do not use the power cord near flammable gas or combustibles such as gasoline, benzene, thinner, etc.
•It may cause explosion or fire.
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Gasolin
Owner’s Manual 3
Safety Precautions
■ Operation
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 place the power cord near a heater.
Always install a dedicated circuit and breaker.
•Improper wiring or installation may cause fire or electric shock
Do not allow water to run into electric parts.
• It may cause fire and electric |
• It will cause failure of machine |
shock. |
or electric shock. |
Do not touch(operate) the product with wet hands.
•There is risk of fire or electrical 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.
If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable.
•There is risk of electric shock or fire.
Ventilate the room well when using this appliance together with a stove, etc.
•An oxygen shortage may occur.
Do not open the suction inlet grill of the product during operation.
•Otherwise, it may electrical shock and failure.
Turn off the power and breaker firstly when cleansing the unit.
•Since the fan rotates at high speed during operation, it may cause injury.
Wax |
Thinner |
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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.
Turn off the main power switch when not using it for a long time.
•Prevent accidental startup and the possibility of injury.
4 Room Air Conditioner
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Safety Precautions |
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Do not plug or unplug the |
Do not damage or use an |
Do not operate with wet |
power supply plug during |
unspecified power cord. |
hands or in damp |
operation. |
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environment. |
• There is risk of fire or |
• It will cause electric shock or |
• It will cause electric shock. |
electric shock. |
fire. |
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Take care to ensure that power |
When gas leaks, open the |
Never touch the metal parts |
cable could not be pulled out |
window for ventilation |
of the unit when removing |
or damaged during operation. |
before operating the unit. |
the filter. |
• There is risk of fire or |
• Otherwise, it may cause |
• They are sharp and may |
electric shock. |
explosion, and a fire. |
cause injury. |
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CAUTION
■ Installation
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.
Owner’s Manual 5
Safety Precautions
■ Operation
Do not put a pet or house plant where it will be exposed to direct air flow.
• It may cause injury.
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.
Be cautious not to touch the sharp edges when installing.
• It may cause injury.
Do not block the inlet or outlet of air flow.
• It may cause product failure.
Always insert the filter securely.
Clean it every two weeks.
•Operation without filters will cause failure.
Avoid excessive cooling and perform ventilation sometimes.
•Otherwise, it may do harm to your health.
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 drink water drained from air conditioner.
•It contains containments and will make you sick.
Do not insert the hands or bars through the air inlet or outlet during operation.
•Otherwise, it may cause personal injury.
6 Room Air Conditioner
Before to Operation
Before Operation
Preparing
for
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.
Usage
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.
Cleaning
and
Maintenance
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.
Service
For repair and maintenance, contact your authorized service dealer.
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Owner’s Manual 7
Introduction
Introduction
Symbols
Used
in
this
Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the air conditioner.
NOTICE This symbol indicates special notes.
Features
This appliance should be installed in accordance with the National Electric Code.
Vertical Air Deflector |
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(Horizontal Louver) |
Brace |
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Horizontal Air Deflector |
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(Vertical Louver) |
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Cabinet |
Front Grille |
Air Discharge
Air Intake(Inlet Grille)
Air Filter
Condenser
Evaporator |
Base Pan |
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Compressor |
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Control Board |
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Power Cord |
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Vertical Air Deflector |
Brace |
(Horizontal Louver) |
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Horizontal Air Deflector |
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(Vertical Louver) |
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Air Discharge |
Cabinet |
Air Intake(Inlet Grille) |
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Front Grille |
Air Filter |
Remote Controller |
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Condenser
Base Pan |
Compressor |
Power Cord |
Control Board |
Evaporator |
8 Room Air Conditioner
Installation
Installation
Select
the
Best
Location
1.Measure the space for installation to assure a good fit. The air conditioner must be installed firmly into place to prevent vibration and noise.
2.Avoid exposure to direct sunlight.
3.Remove all obstacles from the rear of the unit. There must be at least 50cm (20in.) of cleared space around the rear of the unit. Obstacles restricting the airflow may reduce the cooling efficiency of the unit.
4.The unit should be installed with a slight tilt towards the outside (approx. 3°) to allow condensed water to drain. (About 10~15mm or 1/4 bubble with level)
NOTICE
The external grille must be exposed outside for air discharge.
FOAM
COOLED
AIR
<![if ! IE]><![endif]>70-150cm
AWNING FENCE
HEAT
RADIATION
10~15mm Over 50cm
1/4 Bubble
Level
Remove
the
Air
Conditioner
From
the
Case
1.Remove 2 shipping screws from the back of the case.
2.Remove the 2 screws on each side of the case. Keep these for later use.
3.Slide out the air conditioner from the case by pulling the base-pan handle while bracing the case.
4.Remove the white Styrofoam shipping block from the compressor. (Applicable for some models)
White styrofoam block
Shipping screws
Attaching
the
Drain
Pan
(Optional)
The drain pan is used to collect condensed water.
The base-pan may overflow due to high humidity. The base-pan may also collect excess water when in reverse mode (in Reverse Cycle models only). To drain the excess water, remove the drain cap from the back of the unit and secure the drainpipe as follows:
1.Remove the drain pan located in the air discharge or on the barrier.
2.Remove the rubber cap from the hole on the base-pan. (Not applicable to all models)
3.Install the drain pan to the left corner of the cabinet with 2-4 screws.
4.Connect the drain hose to the hole located on the bottom of the drain pan.
You can purchase the drain hose or tubing locally to satisfy your particular needs. (Drain hose not included)
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Owner’s Manual 9
Installation
Installation
of
the
Housing
Step 1
Remove the air conditioner from it’s packaging and slide the air conditioner out of it’s housing.
Step 2
Prepare the hole in the wall so that the bottom of the housing is well supported, the top has minimum clearace and the air inlet louveres have clearance as shown. Holes from the outside through to the cavity should be sealed. The housing should slope down towards the rear by about 5mm to allow water formed during operation to drain.
Step 3
Install the housing into the wall and secure. Ensure the foam seals are not damaged. Flash, seal or fill gaps around the inside and outside to provide satisfactory appearance and protection against the weather, insects and rodents.
NOTICE |
UNIT MAY BE SUPPORTED BY A |
OR BY A HANGER FROM A |
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SOLID FRAME FROM BELOW |
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SOLID OVERHEAD SUPPORT. |
FLASH OR SEAL AROUND EXTERNAL
WALL FRAME OR ARCHITRAVE
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STURDY TIMBER |
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DRAIN CHUTE |
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EXTERNAL SUPPORT |
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FRAME ALL ROUND |
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FRAME AT BALANCE |
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UNIT |
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POINT OF RAC |
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TIMBER FRAMED |
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ALTERNATIVELY, BRACKETS |
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AS ILLUSTRATED BELOW |
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WALL OR PARTITION |
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MAY BE USED. |
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Preferred method of installation into
a timber framed wall, partition or window.
Installations
of
the
unit
into
the
Housing
1.Slide the unit into the housing until it is firmly against the rear of the housing. Care is required to ensure the foam sealing strips on the housing remain in position.
2.Connect the air conditioner to the power and coil excess cord length beneath the air conditioner base or control box.
3.Engage the Chassis Lock into the bottom housing rail and secure to the base with the screw provided.
4.Remove the front panel from i’s carton and plastic bag and fit as per the Operating Instruction.
5.Switch unit on. Check for operation of the unit and check for vibration in the installation.
6.Fit the drain chute to the housing and run a drain line to a suitable location if required.
FLASH OR SEAL AROUND EXTERNAL
WALL FRAME OR ARCHITRAVE
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ENSURE LOUVRES |
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ARE ENTIRELY |
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OUTSIDE THE WALL. |
STURDY TIMBER |
DRAIN CHUTE |
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FRAME |
STEADYING BRACKET |
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TIMBER FRAMED |
(ONE PER SIDE) |
WALL OR PARTITION |
TIMBER SUPPORT |
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Alternative method of installation if external support cannot be provided.
Installations
of
the
unit
into
the
wall
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45° BRICK CUT AWAY |
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45° BRICK CUT AWAY |
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TO CLEAR LOUVRES |
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TO CLEAR LOUVRES |
AIR IN |
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FRONT |
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BRICK |
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BRICK |
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AIR IN |
WALL |
100mm |
WALL |
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TOP |
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VIEW |
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AIR IN |
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AIR IN |
AIR IN |
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100mm |
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LOUVRE |
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AIR OUT |
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100mm minimum |
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AIR OUT |
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OPTION A |
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OPTION B |
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10 Room Air Conditioner
Installation
Install
the
Air
Conditioner
in
the
Case
1.Slide the air conditioner into the case. Reinstall the 2 screws removed earlier on each side of the case.
4.Attach the front grille to the case by inserting the tabs on the grille into the slots on the front of the case. Push the grille in until it snaps into place.
When you detach the front grille from the case, push the grille to your right side and pull it toward you.
Screw
Screw
Power Cord 
The power cord must be connected to an independent circuit.
The green wire must be grounded.
2.Stuff the foam between the top of the unit and the wall to prevent air and insects from getting into the room.
The Foam
5.Lift the inlet grill and secure the front grille with a screw(L:10mm). Lower the inlet grille into place. (for some models)
3.Before installing the front grille, pull out the vent control lever located above the unit control knobs, as shown. (for some models)
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Owner’s Manual 11
Installation
How to Use the Reversible Inlet Grille(For Some Models)
The grille is designed to clean the filter both upward and downward.
b
(a) |
(b) |
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.
12 Room Air Conditioner
Installation
Owner’s Manual 13
Operating Instructions
Operating Instructions
Controls
The controls will look like one of the following.
Thermostat
Turn the thermostat control to the desired setting. The control position is a normal setting for
average conditions. You can change this setting, if necessary, in accordance with your temperature preference.
The thermostat automatically controls cooling or heating, but the fan runs continuously
whenever the air conditioner is in operation. If the room is too warm, turn the thermostat
control clockwise. If the room is too cool, turn the thermostat control counterclockwise.
Operation
OFF |
: Turns the air conditioner off. |
MED FAN |
: Permits the medium fan speed |
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operation without cooling. |
LOW FAN |
: Permits the low fan speed |
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operation without cooling. |
HIGH COOL |
: Permits cooling with the high fan |
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speed operation. |
MED COOL |
: Permits cooling with the |
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medium fan speed operation. |
LOW COOL |
: Permits cooling with the low fan |
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speed operation. |
LOW HEAT |
: Permits heating with the low |
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fan speed operation. |
HIGH HEAT |
: Permits heating with the high |
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fan speed operation. |
14 Room Air Conditioner
Operating Instructions
■ COOLING DESCRIPTIONS
For Normal Cooling - Select High Cool or Med Cool with the Operation knob at the midpoint of
Thermostat knob.
For Maximum Cooling - Select High Cool with the Operation knob at the highest number available on your Thermostat knob.
For Quieter & Nighttime Cooling - Select Low Cool with the Operation knob at the midpoint of
Thermostat knob.
■ AUTO SWING (available in some models)
ON ( 
, SI ) : Air swing is operated while OPERATION knob is set to the COOL position. OFF( 
, NO ) : Stops the operation of air swing.
On |
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Off |
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Auto Swing
ation and is turned off or set to the ling operation again.
Owner’s Manual 15
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