Please read this manual carefully before operating
your set and retain it for future reference.
Ceiling suspended air conditioner
MFL68525402
P/NO : MFL68525402
www.lg.com
TIPS FOR SAVING ENERGY
2
ENGLISH
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block
the air flow or weaken the cooling / dehumidifying functions.
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For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
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IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
WARNING
!
It can result in serious injury or death when the directions are ignored
CAUTION
!
It can result in minor injury or product damage when the directions are ignored
WARNING
!
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• The product shall be installed according to the Wiring regulations of the corresponding country.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
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.
• 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 ground the product. 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.
• Always install a dedicated circuit and breaker. Improper wiring or installation may cause fire or
electric shock
• Use the correctly rated breaker or fuse. There is risk of fire or electric shock.
• Do not modify or extend the power cable. There is risk of fire or electric shock.
• Do not install, remove, or re-install the unit by yourself (customer). There is risk of fire, electric
shock, explosion, or injury.
• 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.
• For installation, always contact the dealer or an Authorized Service Center. 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 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.
• Do not let the air conditioner run for a long time when the humidity is very high and a door or
a window is left open. Moisture may condense and wet or damage furniture.
3
IMPORTANT SAFETY INSTRUCTIONS
4
Operation
• Take care to ensure that power cable could not be pulled out or damaged during operation.
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 plug or unplug the power supply plug during operation. There is risk of fire or electric
shock.
• Do not touch(operate) the product with wet hands. There is risk of fire or electrical shock.
• Do not place a heater or other appliances near the power cable. There is risk of fire and 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.
• Do not store or use flammable gas or combustibles near the product. There is risk of fire or
failure of product.
• Do not use the product in a tightly closed space for a long time. Oxygen deficiency could
occur.
• 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
• 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.
• 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.
• 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.
• When the product is soaked (flooded or submerged), contact an Authorized Service Center.
There is risk of fire 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.
• Turn the main power off when cleaning or maintaining the product. There is risk of 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.
• Take care to ensure that nobody could step on or fall onto the outdoor unit. This could result
in personal injury and product damage.
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CAUTION
!
Installation
• This appliance is intended to be used by expert or trained users in shops, in light industry and on
farms, or for commercial use by lay persons.
• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant lev-
els may cause failure of product.
• Install the drain hose to ensure that water is drained away properly. A bad connection may cause
water leakage.
• Keep level even when installing the product. To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the outdoor unit could damage the neigh-
borhoods. It may cause a problem for your neighbors.
Batteries :
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IMPORTANT SAFETY INSTRUCTIONS
• Use two or more people to lift and transport the product. Avoid personal injury.
• Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause cor-
rosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause
product malfunction or inefficient operation.
Operation
• 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 use of the appliance by a person responsible for their safety.
• Children being supervised not to play with appliance.
• 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 con-
sumer 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.
• Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. There is risk of fire, electric
shock, or damage to the plastic parts of the product.
• Do not touch the metal parts of the product when removing the air filter. They are very sharp! There
is risk of personal injury.
• Do not step on or put anyting on the product. (outdoor units) There is risk of personal injury and fail-
ure of 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 drained from the product. It is not sanitary and could cause serious health is-
sues.
• Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal
injury.
• 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
• 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.
• 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.
5
Do not burn, do not try to open it, do not dispose in ordinary trash. Preserve
environment and your health.
After use, batteries must be delivered to the merchant or service authorized
network (Conama number 401 dated 11/2008).
TABLE OF CONTENTS
6
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TABLE OF CONTENTS
ENGLISH
2TIPS FOR SAVING EN-
ERGY
3IMPORTANT SAFETY IN-
STRUCTIONS
7BEFORE USE
7Preparing for operation
7Usage
7Cleaning and maintenance
7Service
8PRODUCT INTRODUC-
TION
8Name and function of parts
8Operation indication lamps
9Wireless remote controller
11OPERATING INSTRUC-
TION
11How to insert the batteries
11Wireless remote controller mainte-
nance
12OWNER'S INSTRUC-
TION
12Cooling mode -standard operation
12Cooling mode - power cooling
13Heating mode
14Auto changeover mode
15Auto operation mode
16Dehumidification mode
17Fan mode
18Temperature setting/room tempera-
ture checking
19
Airflow setting
Celsius/fahrenheit switching
19
20Timer
21MAINTENANCE AND
SERVICE
21Indoor unit
22Operation tips!
22When the air conditioner is not
going....
23Troubleshooting Tips! Save time and
money!
23Call the service immediately in the fol-
lowing situations
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BEFORE USE
BEFORE USE
Preparing for operation
- Contact an installation specialist for installation.
- Use a dedicated circuit.
Usage
- 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.
- Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves
or other heating devices.
- 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
- Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling sharp metal edges.
- Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.
- 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.
7
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Service
For repair and maintenance, contact your authorized service dealer.
PRODUCT INTRODUCTION
On/Off
Filter sign
Timer
Defrost mode
8
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PRODUCT INTRODUCTION
Name and function of parts
7
6
4
5
1
4
3
1 Indoor unit
2 Outdoor unit
3 Remote controller
4 Inlet air
5 Discharge air
6 Refrigerant piping, connection electric wire
7 Drain pipe
8 Ground wire
Wire to ground outdoor unit to prevent electrical shocks.
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2
8
Operation indication lamps
O
: Lights up during the system operation.
: Lights up after 2400 hours from the time of first operating unit.
: Lights up during timer operation.
: Lights up during defrost mode or hot start operation.
(heat pump type)
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Wireless remote controller
1
2
3
4
5
6
7
8
9
Operation Mode
Cooling Mode
Auto Mode or Auto Changeover
Dehumidification mode
Heating Mode
Fan Mode
Cooling Model( ), Heat Pump Model( )
PRODUCT INTRODUCTION
1
VANE ANGLE button (Useless)
Used to set each vane angle.
2
FUNCTION SETTING button (Useless)
Used to set or clear auto clean, smart clean,
electric heater or individual vane angle control.
3
ON/OFF button
Used to turn on/off the unit.
10
11
12
13
14
15
16
17
4
JET COOL button
Speed cooling operates super high fan
speed.
5
LEFT/RIGHT AIRFLOW button (Useless)
Used to set the desired left/right(horizontal)
airflow direction.
6
UP/DOWN AIRFLOW button
Used to stop or start louver movement and
set the desired up/down airflow direction.
7
ON TIMER button
Used to set the time of starting operation.
8
SLEEP TIMER button
Used to set the time of sleeping operation.
(Refer to timer setting)
9
SET / CLEAR button
Used to SET / CLEAR the timer.
Used to set the current time (if it input for
3 sec.)
10
PLASMA button (Useless)
Used to start or stop the plasma-purification
function.
11
ROOM TEMPERATURE SETTING button
Used to select the room temperature.
12
OPERATION MODE SELECTION button
Used to select the operation mode.
13
INDOOR FAN SPEED SELECTION button
Used to select fan speed in four steps low,
medium, high and auto.
14
ROOM TEMPERATURE CHECKING button
Used to check the room temperature.
15
OFF TIMER button
Used to set the time of stopping operation.
16
TIMER SETTING(Up/Down)/LIGHT button
Used to set the timer.
Used to adjust the brightness.(if it is not
time adjust mode)
17
RESET button
Used to reset the remote controller.
9
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PRODUCT INTRODUCTION
Caution of handling the remote controller
10
CAUTION
!
- Aim at the signal receiver on the wired remote controller so as to operate.
- Be sure that there are no obstructions between the remote controller and the signal receptor.
- Do not drop or throw the remote controller.
- Do not place the remote controller in a location exposed to direct sunlight, or near the heating
unit, or any other heat source.
- Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal
operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)
NOTE
!
-
The wireless remote controller do not operate the swirl mode.(4Way type)
-
For more details refer to the wireless remote control accessory manual.
-
The actual product can be different from above contents depending upon model type.
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OPERATING INSTRUCTION
OPERATING INSTRUCTION
11
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How to insert the batteries
Remove the battery cover by pulling it according to the arrow direction.
Insert new batteries making sure that the (+)
and (-) of battery are installed correctly.
Reattach the cover by sliding it back into position.
NOTE
!
- Always use/replace both batteries of
same type.
- If the system is not to be used for a
long time, remove the batteries to save
their working life.
- If the display screen of remote controller starts, fading replace both of the
batteries.
Wireless remote controller
maintenance
Choose a suitable place where its safe & easy
to reach.
Fix the holder to wall etc with the supplied
screws firmly.
Slide the remote controller inside the holder.
NOTE
!
- Remote controller should never be exposed to direct sunlight.
- Signal transmitter & receiver should always be clean for proper communication. Use a soft cloth to clean them.
- In case some other appliances also get
operated with remote control, change
their position or consult your serviceman.
OWNER'S INSTRUCTION
12
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OWNER'S INSTRUCTION
ENGLISH
Cooling mode standard operation
Cooling mode - power cooling
1 Press the ON/OFF button.
The unit will respond with beep sound.
2 Press MODE button to select cooling
mode.
3 Set the desired temperature by pressing
TEMP button.
Press ROOM TEMPERATURE button to
check the room temperature. When setting the desired temperature is higher than
room temperature, cooling wind isn’t blow
out.
Setting temp. range : 18~30 °C(64~86 °F)
-
1 Press the ON/OFF button.
The unit will respond with beep sound.
2 Press MODE button to select cooling
mode.
3 Press the JET COOL button. The unit will
operate in super high fan speed in cooling
mode.
- Wall mounted models operate power
cooling mode for 30 minutes.
4 To cancel the power cooling mode press
the JET COOL button or the fan button or
the room temperature setting button again
and the unit will operate in high fan speed
in cooling mode.
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13
OWNER'S INSTRUCTION
14
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<For cooling model>
Code Feel
2 Cold
1 Slightly cool
0 Neutral
-1 Slightly warm
-2 Warm
❈ Please select the code
depend on your feeling.
During auto operation mode
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Auto operation mode
OWNER'S INSTRUCTION
- If the system is not operating as desired, manually switch to another mode.
The system will not automatically
switch from the cooling mode to the
heating mode, or from heating to cooling, then you must set the mode and
the desired temperature again.
15
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1 Press the ON/OFF button.
The unit will respond with beep sound.
2 Press MODE button to select auto opera-
tion mode.
3 Set the desired temperature.
The temperature and fan speed are automatically set by the electronic controls
based on the actual room temperature.
If you feel hot or cold, press TEMPERATURE SETTING buttons for more cooling
or heating effect.
You cannot switch the indoor fan speed.
It has already been set by the auto operation mode rule.
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