LG ARNU243M2A4, ARNU483BRA2 Owner's Manual
OWNER’S MANUAL
AIR CONDITIONER
Read this owner’s manual thoroughly before operating the
appliance and keep it handy for reference at all times.
TYPE : Ceiling Concealed Duct
EN ENGLISH FR FRANÇAIS ES ESPAÑOL
MFL69889202
Rev.08_061220
www.lghvac.com
www.lg.com
Copyright © 2017 - 2020 LG Electronics Inc. All rights reserved.
TABLE OF CONTENTS
3 SAFETY INSTRUCTIONS
3 IMPORTANT SAFETY INSTRUCTIONS
8 PRIOR TO OPERATION
8 Preparing for operation
8 Usage
8 Cleaning and maintenance
8 Service
8 FOR YOUR RECORDS
9 OPERATION DETAILS
9 Operation range
9 Usage Limitations
10 OPERATION
10 Parts and Functions
11 MAINTENANCE
11 Cleaning the Air Filter
12 When air conditioner is not going to be used for a long period of time
12 When using the air conditioner after a long period of non-use
12 Operation Tips
13 TROUBLESHOOTING
13 Before Calling for Service
14 WARRANTY (USA)
16 WARRANTY (CANADA)
SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USE
3SAFETY INSTRUCTIONS
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always
read and follow all safety messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or injure you and others.
All safety messages will follow the safety alert symbol and either the word WARNING, or CAUTION.
WARNING
Failure to follow these instructions could result in death or serious injury.
CAUTION
Failure to follow these instructions could result in minor or moderate injury or damage to the product.
All safety messages will tell you what the potential hazard is, inform you as to how to reduce the chance of
injury, and tell you what may happen if the instructions are not followed.
IMPORTANT SAFETY INSTRUCTIONS
WARNING
ENGLISH
FRANÇAIS ESPAÑOL
To reduce the risk of explosion, fire, death, electric shock, scalding or injury
to persons when using this product, follow basic precautions, including the
following:
• Installation or repairs done by unauthorized persons can pose hazards to you and others.
• Installation MUST conform to the local building codes or, in the absence of local codes, the National Electrical
Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical Code Part 1 CSA C22. 1.
• The information contained in this manual is intended for use by a qualified service technician who is familiar
with the safety procedures and equipped with the proper tools and test instruments.
• Failure to read and follow all instructions in this manual can result in equipment malfunction, property damage,
personal injury and/or death.
• When the power cord needs to be replaced, the replacement work should be performed by authorized
personnel using only genuine replacement parts.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning the use of the appliance by a person responsible for their safety. Children should be supervised to
ensure that they do not play with the appliance.
4 SAFETY INSTRUCTIONS
Important Safety Instructions
WARNING
Installation
Contact the dealer to have the air conditioner
installed.
• Incomplete installation performed by yourself
may result in a water leakage, electric shock,
and fire.
Check the foundation for damaged on a continuous
basis, especially if it has been in use for a long time.
• It may cause injury or damage to the unit or
other property.
Contact the dealer for repairs, maintenance and to
reinstall the airconditioner.
• Incomplete installation performed by yourself
may result in a water leakage, electric shock,
and fire.
Be sure to only use accessories made by LG which
are specifically designed for use with the equipment
and have them installed by a professional.
• Improper installation or attachment of equipment
or accessories could result in electric shock, a
short circuit, leaks, fire or other damage to the
equipment.
Power
Do not attempt to do electrical work or grounding
work unless you are licensed to do so. Consult with
the dealer for electrical work and grounding work.
• There is a risk.
Do not modify or extend the power cable.
• There is risk of fire or electric shock.
Be sure to establish an earth.
• There is risk of fire or electric shock.
Be sure to install an earth leakage breaker.
• There is risk of fire or electric shock.
Always install a dedicated circuit and breaker.
• Improper wiring or installation may cause fire or
electric shock.
Do not turn on the breaker or power if the front panel,
cabinet, top cover, or control box cover are removed
or opened.
• Doing so could cause fire, electric shock, explo-
sion or death.
Do not use a defective or underrated circuit breaker.
Use this appliance on a dedicated circuit.
• There is a risk of fire or electric shock.
In the case of refrigerant leakage, consult the dealer.
When installing the air conditioner in a small room, it
is necessary to take proper measures so that even
when it leaks, the amount of any leaked refrigerant
does not exceed the limiting concentration even
when it leaks. If the refrigerant leakage exceeds the
limiting concentration level, an oxygen deficiencyrelated accident may occur.
• There is a risk of asphyxiation which could lead
to serious injury or death.
Do not install the unit in an area where there are
flammable materials.
• There is a risk of explosion that could result in
serious injury or death.
Use a vacuum pump or insert (nitrogen) gas when
performing a leakage test or air purge. Do not
allow air etc. to enter the refrigerant circuit (piping).
Never use refrigerants that are not specified on the
specification. label and in the manuals.
• There is a risk of death, injury, fire or explosion.
Consult with the installation contractor for cleaning
or maintenance. Turn off all electrical power before
doing any cleaning or maintenance.
• There is a risk of water leakage, electric shock or
serious injury.
Take care to ensure that the power cable cannot be
pulled out or damaged during operation.
• There is a risk of fire or electric shock.
Do not place anything on the power cable.
• There is a risk of fire or electric shock.
Do not turn off the power immediately after stopping
operation. Always wait for at least five minutes before
turning off the power.
• Otherwise, water leakage may occur.
Indoor/outdoor wiring connections must be secured
tightly and the cable should be routed properly so
that there is no force pulling the cable from the
connection terminals.
• Improper or loose connections can cause heat
generation or fire.
Do not touch (operate) the product with wet hands.
• There is a risk of electrical shock.
5SAFETY INSTRUCTIONS
Operation
Be sure to use only those parts which are listed
in the SVC parts list. Never attempt to modify the
equipment.
• The use of inappropriate parts can cause an
electrical shock or fire.
Do not install the air conditioner at any place where
flammable gas may leak out. If the gas leaks out and
stays around the air conditioner, a fire may break out.
• There is a risk of explosion, fire and serious
injury.
Never use flammable spray such as hair spray,
lacquer or paint near the unit.
• Flammable spray may cause a fire.
If equipment utilizing a burner is used in the same
room as the air conditioner,
there is the danger of oxygen deficiency, which could
lead to asphyxiation. Be sure to ventilate the room
sufficiently to avoid this hazard.
• There is a risk of serious injury or death.
Do not put fingers or other objects into the air inlet or
air outlet. Never remove the fan guard of the unit.
• The fan rotates at a high speed and will cause
injury.
Never sprinkle or spill water or liquids on unit.
• Doing so could cause fire, failure of the product,
or electric shock.
If the product becomes soaked (flooded or
submerged), contact the dealer.
• There is a risk of fire or electric shock.
Do not use the product in a tightly closed space for a
long time.
• Doing so could result in a state of oxygen
deficiency.
Maintenance
The heat exchanger fins are sharp edges enough
to cut. To avoid injury, wear gloves or cover the fins
while working around them.
Tear apart and throw away plastic packaging bags
so that children will not play with them.
• Children playing with plastic bags are at risk of
death by suffocation.
Safely dispose of the packing materials. Packing
materials, such as nails and other metal or wooden
parts.
• These materials could cause puncture wounds
or other injuries.
ENGLISH
FRANÇAIS ESPAÑOL
Never let the indoor unit or the remote controller get
wet.
• Water can cause an electric shock or a fire.
Do not let the air conditioner run while a door
or window is open on a day with high humidity.
This could result in excessive moisture and water
damage.
• Excess moisture may collect and cause water
damage to walls or furniture.
If there are any abnormalities in the operation of
the air conditioner such as strange sounds, smoke
or fire. turn off the power and contact the dealer
immediately.
• There is a risk of severe injury or death.
Take care to ensure that nobody can step on or fall
onto the outdoor unit.
• This could result in personal injury and product
damage.
Stop operation and close all window in storm or
hurricane. If possible, remove the product from the
window before the hurricane arrives.
• There is a risk of property damage, product
failure, or electric shock.
6 SAFETY INSTRUCTIONS
CAUTION
Installation
If the refrigerant gas leaks during the installation,
ventilate the area immediately.
• Such leakage it can be harmful for your health.
Always check for gas (refrigerant) leakage after
installation or repair of product.
• Low refrigerant levels may cause product failure.
Keep the product level, even when installing it.
• This will help to avoid vibration or water leakage.
Use two or more people to lift and transport the
product.
• This will help to avoid personal injury.
Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.
Do not place objects in direct proximity of the
outside unit. Do not let leaves and other debris
accumulate around the unit. Leaves are a hotbed
for small animals, which can enter the unit. Once
inside the unit, these animals can lead to the unit
malfunctioning, and end up causing in smoke or fire
when they make contact with electrical parts.
• There is a risk of fire or electric shock.
Do not install the product where it will be exposed to
sea wind (salt spray) directly.
• This can cause corrosion on the product.
Corrosion, particularly on the condenser and
evaporator fins, could cause product malfunction
or inefficient operation.
Make sure that the drainpipe is installed properly to
drain water. Arrange the drain hose to ensure smooth
drainage.
• Incomplete drainage may lead to water damage
done to the building, furniture, etc. If no water
is discharged from the drainpipe while the air
conditioner or heat pump is in the cooling mode,
it may be because the drainpipe has become
clogged with dust or dirt, and could result in
water leakage in the indoor unit. In such a
situation, stop operating the air conditioner or
heat pump and contact the dealer.
The Limited Warranty is void and of no effect, and
LG will have no liability hereunder to any Customer
or third party, to the extent any of the following occur:
acts, omissions, and conduct of any and all third
parties including, but not limited to, the installing
contractor and any repairs, service or maintenance
by unauthorized or unqualified persons.
Do not install the unit in potentially explosive
atmospheres.
Operation
If refrigerant gas leaks while the unit is being repaired
do not touch the leakaing refrigerant gas.
• The refrigernat gas can cause frostbite (cold
burn)
Do not mix air or gases other than the specified
refrigerant used in the system.
• Air entering the refrigerant system can lead to
excessively high pressure causing equipment
damage or injury.
Make sure that there are no obstacles close to the
outdoor unit. The presence of obstacles close to the
outdoor unit may reduce the performance of outdoor
unit or increase its operating sound.
• This could cause product failure.
Do not use the air conditioner for any other purposes
other than comfort cooling or heating. Do not use the
unit for cooling precision instruments, food, plants,
animals or works of art.
• Doing so could lead to risk of damage or loss of
property.
Replace all the batteries in the remote control with
new ones of the same type. Do not mix old and new
batteries or different types of batteries.
• Doing so could lead to a risk of fire or explosion.
Do not recharge or disassemble the batteries. Do not
dispose of batteries in a fire.
• They may burn or explode.
If the liquid from the batteries gets onto your skin or
clothes, wash it well with clean water. Do not use the
remote if the batteries have leaked.
• The chemicals in batteries could cause burns or
other health hazards.
Do not install the product where the noise or hot
air from the outdoor unit could be harmful to your
immediate surroundings.
• Improper placement could cause problems for
your neighbors.
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