Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : Outside unit
P/NO : MFL65003503
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
n 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 to properties only.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
n Installation
Have all electric work done by a licensed electrician
according to "Electric Facility Engineering Standard"
and "Interior Wire Regulations" and the instructions
given in this manual and always use a special circuit.
Ask the dealer or an authorized technician to install
the air conditioner.
• If the power source capacity is inadequate or electric work
is performed improperly, electric shock or fire may result.
• Improper installation by the user may result in water leakage, electric shock, or fire.
Always ground the product.
• There is risk of fire or electric shock.
For re-installation of the installed product, always contact a dealer or an Authorized Service Center.
• There is risk of fire, electric shock, explosion, or injury.
Do not store or use flammable gas or
combustibles near the air conditioner.
• There is risk of fire or failure of product.
Prepare for strong wind or earthquake and install the
unit at the specified place.
• Improper installation may cause the unit to topple and
result in injury.
Outdoor Unit
Always intstall a dedicated circuit and breaker.
• Improper wiring or installation may cause fire or electric
Do not install, remove, or re-install the unit by yourself
• There is risk of fire, electric shock, explosion, or injury.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
Do not install the product on a defective installation
• It may cause injury, accident, or damage to the product.
Safety Precautions
Do not reconstruct to change the settings of the protection devices.
• If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the
unit may be damaged.
• If the pressure switch, thermal switch, or other protection
device is shorted and operated forcibly, or parts other than
those specified by LGE are used, fire or explosion may result.
Ventilate before operating air conditioner when gas
leaked out.
• It may cause explosion, fire, and burn.
Securely install the cover of control box and the panel.
• If the cover and panel are not installed securely, dust or
water may enter the outdoor unit and fire or electric shock
may result.
If the air conditioner is installed in a small room, measures must be taken to prevent the
refrigerant concentration from exceeding the safety limit when the refrigerant leaks.
• Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, harzards due to lack of oxygen in the room could result.
Don't mix and use the R22 pipe and the installation
appliances that were used until now
Don't use the existing manifold gage for R22 refrigerant.
• Use the manifold gage for high pressure (R410A) as possible
as for stable refrigerant filling.
• Mixing the oil of R22 and R410A may cause
failure of the unit due to hydrolysis.
n Operation
Do not damage or use an unspecified power cord.
• There is risk of fire, electric shock, explosion, or injury.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock.
Be cautious that water could not enter the product.
• There is risk of fire, electric shock, or product damage.
Do not touch the power switch with wet hands.
• There is risk of fire, electric shock, explosion, or injury.
Take care so that children should not randomly operate the wire remote control for play.
• Frequent conversion to cold or heat mode may cause failure of the unit.
When the product is soaked (flooded or
submerged), contact an Authorized Service Center.
• There is risk of fire or electric shock.
Be cautious not to touch the sharp edges when
• It may cause injury.
Take care to ensure that nobody could step on or fall
onto the outdoor unit.
• This could result in personal injury and product damage.
Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so
• There is risk of physical injury, electric shock, or product failure.
Owner's Manual 3
When installing and moving the air conditioner to
another site, do not charge it with a different refrigerant from the refrigerant specified on the unit.
Safety Precautions
n Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
• Low refrigerant levels may cause failure of
Keep level even when installing the product.
• To avoid vibration or water leakage.
Use power cables of sufficient current
carrying capacity and rating.
• Cables that are too small may leak, generate heat, and
cause a fire.
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.
Do not install the unit where combustible gas may
• If the gas leaks and accumulates around the unit, an
explosion may result.
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.
Keep the unit away from children. The heat exchanger
is very sharp.
When installting the unit in a hospital, communication
station, or similar place, provide sufficient protection
against noise.
• It can cause the injury, such as cutting the finger. Also the
damaged fin may result in degradation of capacity.
• The inverter equipment, private power generator, high-frequency medical equipment, or radio communication equipment may
cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such
equipment by creating noise that disturbs medical treatment or
image broadcasting.
Do not install the product where it is 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.
n Operation
Do not use the air conditioner in special
• Oil, steam, sulfuric smoke, etc. can significantly reduce the
performance of the air conditioner or damage its parts.
Make the connections securely so that the outside
force of the cable may not be applied to the terminals.
• Inadequate connection and fastening may generate heat
and cause a fire.
Do not block the inlet or outlet.
• It may cause failure of appliance or accident.
Be sure the installation area does not deteriorate with
• If the base collapses, the air conditioner could fall with it,
causing property damage, product failure, and personal
Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual.
• A bad connection may cause water leakage.
Outdoor Unit
Safety Precautions
Be very careful about product transportation.
Safely dispose of the packing materials.
Turn on the power at least 6 hours before starting
operation.(In case of outdoor
temperature below 10°C)
• Packing materials, such as nails and other metal or wooden
parts, may cause stabs or other injuries.
• Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a plastic bag
which was not torn apart, they face the risk of suffocation.
• Starting operation immediately after turning on the main
power switch can result in severe
damage to internal parts. Keep the power switch turned on
during the operational season.
Do not touch any of the refrigerant piping during and
after operation.
Do not operate the air conditioner with the panels or
guards removed.
• It can cause a burn or frostbite.
Do not directly turn off the main power switch after
stopping operation.
• Rotating, hot, or high-voltage parts can cause injuries.
Auto-addressing should be done in condition of connecting the power of all indoor and outdoor units. Autoaddressing should also be done in case of changing the
Indoor unit PCB.
• Wait at least 5 minutes before turning off the main power
switch. Otherwise it may result in water leakage or other
Use a firm stool or ladder when cleaning or maintaining the air conditioner.
• Be careful and avoid personal injury.
Do not insert hands or other objects through the air
inlet or outlet while the air conditioner is plugged in.
• There are sharp and moving parts that could cause personal injury.
Avoid a place where rain may enter since the HR unit
is for indoor
Install the HR unit at a place in which it is not affected
by operation mode changing noise.
• There is risk of property damage, failure of product or electric shock.
• Installation within cell such as meeting room etc, may disturb business due to noise.
Owner's Manual 5
• Only one person should not carry the product if it weighs more than 20 kg.
• Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.
• Do not touch the heat exchanger fins. Doing so may cut your fingers.
• When transporting the outdoor unit, suspending it at the specified positions on the unit base. Also support the outdoor unit
at four points so that it cannot slip sideways.
Outdoor Unit
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