website http://www.lgservice.com
LG
LG Ceiling Cassette
Air Conditioner
OWNER'S MANUAL
Dear Owner
Thank you for installing LG Air Conditioner. Your best choice guarantees you a great performance and service to make your life comfortable & pleasant.
IMPORTANT
•Please read this owner's manual carefully and thoroughly before installing and operating your room air conditioner.
•Please retain this owner's manual for future reference after reading it thoroughly.
P/No.: MFL37562504
Ceiling Cassette Air Conditioner Owner’s Manual
TABLE OF CONTENTS
Safety Precautions......................... |
3 |
Prior to Operation .......................... |
6 |
Introduction .................................... |
7 |
Electrical Safety ............................. |
8 |
Operating Instructions................... |
9 |
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 Ceiling Cassette 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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
•There is risk of fire or electric shock.
Install the panel and the cover of control box securely.
•There is risk of fire or electric shock.
Do not modify or extend the power cable.
•There is risk of fire or electric shock.
For installation, always contact the dealer or an Authorized Service Center.
•There is risk of fire, electric shock, explosion, or injury.
For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.
•Do not disassemble or repair the product. There is risk of fire or electric shock.
Always install a dedicated circuit and breaker.
Always ground the product.
•There is risk of fire or electric shock.
Use the correctly rated breaker or fuse.
• Improper wiring or installation |
• There is risk of fire or electric |
may cause fire or electric shock |
shock. |
Do not install, remove, or re-install the unit by yourself (customer).
•There is risk of fire, electric shock, explosion, or injury.
Do not install the product on a defective installation stand.
•It may cause injury, accident, or damage to the product.
Be cautious when unpacking and installing the product.
•Sharp edges could cause injury.
Be especially careful of the case edges and the fins on the condenser and evaporator.
Be sure the installation area does not deteriorate with age.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
Owner's Manual 3
Safety Precautions
■ Operation
Do not let the air conditioner run for a |
Take care to ensure that power |
long time when the humidity is very high |
cable could not be pulled out or |
and a door or a window is left open. |
damaged during operation. |
• Moisture may condense and wet |
• There is risk of fire or electric |
or damage furniture. |
shock. |
Do not plug or unplug the power supply plug during operation.
•There is risk of fire or electric shock.
Do not allow water to run into electric parts.
•It may cause There is risk of fire, failure of the product, or electric shock.
When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.
•Do not use the telephone or turn switches on or off.
There is risk of explosion or fire
Do not open the inlet grill of the product during operation.
(Do not touch the electrostatic filter, if the unit is so equipped.)
•There is risk of physical injury, electric shock, or product failure.
Do not touch(operate) the product with wet hands.
•There is risk of fire or electrical shock.
Do not store or use flammable gas or combustibles near the product.
•There is risk of fire or failure of product.
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.
When the product is soaked (flooded or submerged), contact an Authorized Service Center.
•There is risk of fire or electric shock.
Do not place anything on the power cable.
•There is risk of fire or electric shock.
Do not use the product in a tightly closed space for a long time.
• Oxygen deficiency could occur.
Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.
•There is risk of property damage, failure of product, or electric shock.
Be cautious that water could not enter the product.
•There is risk of fire, electric shock, or product damage.
Ventilate the product from time to time when operating it together with a stove, etc.
• There is risk of fire or electric shock.
When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.
•There is risk of product damage or failure, or unintended operation.
Turn the main power off when cleaning or maintaining the product.
• There is risk of electric shock.
Take care to ensure that nobody could step on or fall onto the outdoor unit.
•This could result in personal injury and product damage.
4 Ceiling Cassette Air Conditioner
Safety Precautions
■ Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
•Low refrigerant levels may cause failure of product.
Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
•It may cause a problem for your neighbors.
Install the drain hose to ensure that water is drained away properly.
•A bad connection may cause water leakage.
Use two or more people to lift and transport the product.
• Avoid personal injury.
Keep level even when installing the product.
•To avoid vibration or water leakage.
Do not install the product where it will be exposed to sea wind (salt spray) directly.
•It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
Do not expose the skin directly to cool air for long periods of time.
(Don't sit in the draft.)
• This could harm to your health.
Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.
•There is risk of damage or
loss of property.
Do not block the inlet or outlet of air flow.
• It may cause product failure.
Do not step on or put anyting on the product. (outdoor units)
•There is risk of personal injury and failure of product.
Use a soft cloth to clean. |
Do not touch the metal parts of |
Do not use harsh |
the product when removing the |
detergents, solvents, etc. |
air filter. They are very sharp! |
• There is risk of fire, electric shock, or |
• There is risk of personal injury. |
damage to the plastic parts of the product. |
|
Always insert the filter securely. Clean the filter every two weeks or more often if necessary.
•A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
Do not insert hands or other objects through the air inlet or outlet while the product is operated.
•There are sharp and moving parts that could cause personal injury.
Do not drink the water |
Use a firm stool or ladder |
drained from the product. |
when cleaning or |
|
maintaining the product. |
• It is not sanitary and could cause |
• Be careful and avoid personal |
serious health issues. |
injury. |
Do not recharge or |
If the liquid from the batteries |
disassemble the batteries. Do |
gets onto your skin or clothes, |
not dispose of batteries in a |
wash it well with clean water. |
fire. |
Do not use the remote if the |
|
batteries have leaked. |
• They may burn or explode. |
• The chemicals in batteries could |
|
cause burns or other health |
|
hazards. |
Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries.
• There is risk of fire or explosion
If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked.
•The chemicals in batteries could cause burns or other health hazards.
Owner's Manual 5
Prior to Operation
Prior to 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.
6 Ceiling Cassette Air Conditioner
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
WARNING
This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.
Anti-bacteria
Anti-bacteria
Air Outlet 
Air Inlet
Remote
Controller
Owner's Manual 7
Electrical Safety
Electrical Safety
WARNING
This appliance must be properly grounded.
To minimize the risk of electric shock, you must alway plug into a grounded oulet.
Preferred method
Ensure proper ground exists before use
WARNING
Do not cut or remove the grounding prong from the power wire.
WARNING
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.
WARNING
If you have any doubt whether the air conditioner is properly grounded, have the wall receptacle and circuit checked by a qualified electrician.
8 Ceiling Cassette Air Conditioner
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