S242SC
OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : WALL MOUNTED
P/NO : MFL42132808
www.lg.com
2 Room Air Conditioner
Room Air Conditioner Ownerʼs Manual
TABLE OF CONTENTS
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
n 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.
A. Safety Precautions ..............................3
B. Electrical Safety...................................6
Temporary Use of an Adapter ...............6
Temporary Use of an Extension Cord ...6
Symbols used in this Manual.................6
C. Product Introduction...........................7
Indoor Units ...........................................7
Operation Indication Lamps ..................8
Outdoor Unit ..........................................8
D. Operating Instructions........................9
How to insert the Batteries ....................9
Wireless Remote Controller
Maintenance..........................................9
Operating Method..................................9
Remote Control Operation ..................10
Operation Mode...................................11
E. Maintenance and Service..................15
Indoor Unit...........................................15
Outdoor Unit ........................................17
Operation Tips!....................................17
Self-Diagnosis Function ......................17
Troubleshooting Tips!
Save time and money!.........................18
Call the service immediately in the
following situations ..............................18
Owner's Manual 3
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.
n Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be sure to follow the instruction.
Always use a power plug and socket with
a ground terminal.
• There is a risk of electric shock.
Do not use a defective or underrated
circuit breaker. Use the correctly rated
breaker and fuse.
• There is risk of fire or electric shock .
Do not use a multi consent. Always use
this appliance on a dedicated cicuit and
breaker.
• Otherwise it can cause electric shock or fire.
For electrical work, contact the dealer, seller,
a qualified electrician, or an Authorized
Service Center. Do not disassemble or repair
the product by yourself.
• There is risk of fire or electric shock.
Always ground the product as per the
wiring diagram. Do not connect the
ground wire to gas or water pipes
lightening rod or telephone ground wire.
• 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 due to
dust , water etc.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
Do not modify or extend the power cable.
If the power cable or cord has scrathes or
skin peeled off or deteriorated then it
must be replaced.
• There is risk of fire or electric shock.
For installation, removal or reinstall ,
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. Be sure that the
installation area does not deteriorate with
age.
• It may cause product to fall.
Never install the outdoor unit on a
moving base or a place from where it
can fall down.
• The falling outdoor unit can cause damage or
injury or even death of a person.
When the product is soaked (flooded or
submerged) in water , contact an
Authorized Service Center for repair
before using it again.
• There is risk of fire or eletric shock.
In outdoor unit the step-up capacitor
supplies high voltage electricity to the
electrical components. Be sure to
discharge the capacitor completely
before conducting the repair work.
• An charged capacitor can cause electrical
shock.
When installing the unit, use the
installation kit provided with the product.
• Otherwise the unit may fall and cause severe
injury.
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, excessive heat generation or
fire.
4 Room Air Conditioner
Safety Precautions
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.
Safely dispose off the packing materials.
Like screws, nails, batteries, broken
things etc after installation or svc and
then tear away and thraw away the plastic
packaging bags.
• Children may play with them and cause
injury.
Make sure to check that the power cable
plug is not dirty, loose or broken and
then only insert the plug completely.
• Dirty, loose or broken power plug can
cause electric shock or fire.
Be sure to check the refrigerant to the
used. Please read the label on the product.
• Incorrect refrigerant used can prevent the
normal operation of the unit.
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 touch , operate, or repair the
product with wet hands. Hold the plug by
hand when taking out
• There is risk of electric shock or fire.
Do not place a heater or other heating
appliances near the power cable.
• There is risk of fire and electric shock.
Do not allow water to run into electric
parts. Install the unit away from water
sources.
• There is risk of fire, failure of the product, or
electric shock.
Do not store or use or even allow
flammable gas or combustibles near the
product.
• There is risk of fire.
Do not use the product in a tightly closed
space for a long time. Perform ventilation
regularly.
• Oxygen deficiency could occur and hence
harm your health.
Do not open the front grille 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.
If strange sounds, smell or smoke comes
from product.Immediately turn the breaker
off or disconnect the power supply cable.
• There is risk of electric shock or fire.
Ventilate the product room from time to
time when operating it together with a
stove, or heating element etc.
• Oxygen deficiency can occur and hence harm
your health.
Turn the main power off and unplug the
unit when cleaning or repairing the
product.
• There is risk of electric shock.
When the product is not to 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
especially kids could step on or fall onto
the outdoor unit.
• This could result in personal injury and
product damage.
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 to turn the unit
ON/OFF .
• There is risk of fire 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.
Two or more people must 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 corrosion on the product.
Install the drain hose to ensure that the
condensed water is drained away properly.
• A bad connection may cause water leakage.
Keep level even when installing the
product.
• To avoid vibration or noise.
Do not install the product where the noise
or hot air from the outdoor unit could
damage or disturb the neighborhoods.
• It may cause a problem for your neighbors
and hence dispute.
Always check for gas (refrigerant)
leakage after installation or repair of
product.
• Low refrigerant levels may cause failure of
product.
Owner's Manual 5
Safety Precautions
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.
Use a soft cloth to clean. Do not use
harsh detergents, solvents or splashing
water 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.
• 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 failure of
product.
Always insert the filter securely after
cleaning. Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency.
Do not insert hands or other objects
through the air inlet or outlet while the
product is operating.
• There are sharp and moving parts that could
cause personal injury.
Be cautious when unpacking and
installing the product.
• Sharp edges could cause injury.
If the refrigerant gas leaks during the
repair, do not touch the leakaing
refrigerant gas.
• The refrigernat gas can cause frostbite (cold
burn)
Do not tilt the unit when removing or
uninstalling it.
• The condensed water inside can spill .
Do not mix air or gas other than the
specified refrigerant used in the system .
• If air enters the refrigerant system, an
excessively high pressure results, causing
equipment damage or injury.
If the refrigerant gas leaks during the
installation, ventilate the area immediately.
• Otherwise it can be harmfull for your health.
Dismantling the unit, treatment of the
refrigerant oil and eventual parts should
be done in accordance with local and
national standards.
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 product failure.
Do not recharge or disassemble the
batteries. Do not dispose off batteries in
a fire.
• They may burn or explode.
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.
Do not expose your skin or kids or
plants to the cool or hot air draft.
• This could harm to your health.
Do not drink the water drained from the
product.
• It is not sanitary and could cause serious
health issues.
Use a firm stool or ladder when cleaning,
maintaining or repairing the product at
an height.
• Be careful and avoid personal injury.
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.
6 Room Air Conditioner
Electrical Safety
Electrical Safety
• This appliance must be properly grounded.
To minimize the risk of electric shock, you must alway plug into a grounded oulet.
• Do not cut or remove the grounding prong from the power plug.
• 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.
• If you have any doubt whether the air conditioner is properly grounded, have the wall receptacle and
circuit checked by a qualified electrician.
We strongly discourage the use of an adapter due to potential safety hazards. For temporary connections,
use only a genuine adapter, available from most local hardware stores. Ensure that the large slot in the
adapter is aligned with the large slot in the receptacle for a proper polarity connection.
To disconnect the power cord from the adapter, use one hand on each to avoid damaging the ground
terminal. Avoid frequently unplugging the power cord as this can lead to eventual ground terminal damage.
• Never use the appliance with a broken adapter.
We strongly discourage the use of an extension cord due to potential safety hazards.
Temporary Use of an Adapter
Temporary Use of an Extension Cord
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the
air conditioner.
This symbol indicates special notes.
NOTE
Symbols used in this Manual
This appliance should be installed in accordance with national wiring regulations. This guide acts as a
guide to help to explain product features.
Owner's Manual 7
Here is a brief introduction of the indoor and outdoor units. Please see the information specific to your
indoor unit type.
Product Introduction
Product Introduction
Indoor Units
Standard Split Type
Display panel LED indicators
Air inlet
Plasma filter (Optional)
Air filter
Grille tab
Front grille
ON/OFF button
Air outlet
Art Cool Type
Display panel LED indicators
Front panel
Signal receiver
ON/OFF button
Air discharge
Art Cool Type Wide
Display panel LED indicators
Air inlet
Front panel
Power cord
Louvers
(Vertical blades)
(Horizontal blade)
Flap
Signal
receiver
Plasma filter
Air filter
Power cord
Plasma filter
Air filter
Signal receiver
ON/OFF button
Air discharge
8 Room Air Conditioner
Product Introduction
Outdoor Unit
Operation Indication Lamps
Art Cool Deluxe(Type 1)
Display panel LED indicators
Art Cool Deluxe(Type 2)
Display panel LCD indicators
Air inlet
Air filter
Plasma filter
Power cord
ON/OFF button
Air discharge
Front panel
Signal receiver
Air inlet
Plasma filter
Air filter
Power cord
ON/OFF button
Air discharge
Front panel
Signal receiver
On/Off
Sleep mode
Energy-Saving
Cooling Mode
Plasma
Timer
Defrost mode
OUT
DOOR
Outdoor unit
operation
Power Display : Indicates the setting temperature and operation mode.
Dust Indicator : Lights up to indicate the time of cleaning the plasma filter. (Optional)
Cooling, heating,
Operation
Dehumidification
mode
Mode
Shape of
display
Setting
temperature
* Hot start operation: Stops the indoor fan in heating operation for minutes to prevent cold air from blowing out
from unit.
* In defrost mode unit stops heating operation for few minutes to remove formation of ice on the heat
exchanger coils to maintain the efficiency.
: Lights up during the system operation, error code and auto restart setting.
: Lights up during sleep mode auto operation.(non-Inverter Model)
: Lights up during Energy-Saving Cooling Mode Operation(Inverter Model only)
: The function illustrates its dynamic mode by using a multiple lighting system.
: Lights up during timer operation.(non-Inverter Model)
Lights up during timer operation or sleep mode auto operation (Inverter Model only)
: Lights up during defrost mode or *hot start operation (Heat pump model only)
: Lights up during outdoor unit operation. (Cooling model only)
Auto operation mode
Standard Too hot Hot Cold Too cold
Comfortable
Jet
Cool/Heat
Energy-saving
cooling mode
Test
operation
Auto
clean
Air intake vents
Air outlet vents
Base plate
Connecting
wires
Refrigerant pipes
Drain hose
Owner's Manual 9
Operating Instructions
How to insert the Batteries
Wireless Remote Controller Maintenance
1. Remove the battery cover by pulling it according to the arrow
direction.
2. Insert new batteries making sure that the (+) and (-) of battery are
installed correctly.
3. Reattach the cover by sliding it back into position.
1. Always use/replace both batteries of same type.
2. If the system is not to be used for a long time, remove the
batteries to save their working life.
3. If the display screen of remote controller starts, fading replace
both of the batteries.
4. Use 2 AAA(1.5 volt) batteries.
NOTE
1. Choose a suitable place where its safe & easy
to reach.
2. Fix the holder to wall etc with the supplied
screws firmly.
3. Slide the remote controller inside the holder.
1. Remote controller should never be exposed to
direct sunlight.
2. Signal transmitter & receiver should always be
clean for proper communication. Use a soft
cloth to clean them.
3. In case some other appliances also get
operated with remote control, change their
position or consult your serviceman.
1. The signal receiver is inside the unit.
2.
Aim the remote controller towards the unit to operate it.
There should not be any blockage in between.
NOTE
Operating Instructions
Operating Method
10 Room Air Conditioner
3
1
4
2
5
6
8
7
2
4
1
3
Operating Instructions
The remote control transmits the signals to the system.
Remote Control Operation
1. OPERATION DISPLAY
Displays the operation conditions.
2. CHAOS SWING BUTTON
Used to stop or start louver movement and set
the desired up/down airflow direction
3. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
4. OFF TIMER BUTTON
Used to set the time of stopping opertion.
5. START/STOP BUTTON
Operation starts when this button is pressed, and
stops when the button is pressed again.
6. ROOM TEMPERATURE SETTING BUTTONS
7. INDOOR FAN SPEED SELECTION BUTTON
Used to set the time of starting and stopping
operation.
8. JET COOL
Used to start or stop the speed cooling (Speed
cooling operates super high fan speed ing
cooling mode.)
(1) Operation Mode
(2) Operation Procedure
Owner's Manual 11
Operating Instructions
TEMP.
TIME
OFF
hr.
TIME
OFF
hr.
TEMP.
TIME
OFF
hr.
TEMP.
Cooling
Healthy
Dehumidification
Heating
(Heat pump model only)
TEMP.
TIME
OFF
hr.
TIME
OFF
hr.
TEMP.
Cooling
Healthy
Dehumidification
TIME
OFF
hr.
TEMP.
To raise the temperature
To lower the temperature
TIME
OFF
hr.
TEMP.
Cooling Operation
Healthy Dehumidification Operation Mode
This mode dehumidifies
without overcooling.
TIME
OFF
hr.
TEMP.
Press the START/STOP BUTTON to
turn the unit on.
The unit will respond with a beep.
1
Operation Mode
Select Cooling Operation.
Press the Operation Mode Selection Button.
Each time the button is pressed, the operation mode is
shifted in the arrow direction.
Set the temperature lower than the room temperature.
• The temperature can be set within a range of
18°C~30°C by 1°C
Set the fan speed.
•
Select the fan speed in four steps-low, medium, high or CHAOS.
• Each time the button is
pressed, the fan speed
mode is shifted.
• The display shows high
fan speed.
2
3
4
Natural wind by the CHAOS logic
o
For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to CHAOS mode. In this
mode, the wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic.
During Healthy Dehumidification Operation:
o
If you select the dehumidification mode on the operation selection button, the airconditioner starts to run the
dehumidification function, automatically setting the room temp. and airflow volume to the best condition for
dehumidification based on the sensed current room temp. In this case, however, the setting temp. is not displayed in
the remote control and you are not able to control the room temp. either.
o
During the healthy dehumidification function, the airflow volume is automatically set according to the optimization
algorithm responding to the current room temp. status and makes the room condition healthy and comfortable even in
the high humidity season.
12 Room Air Conditioner
Operating Instructions
TIME
OFF
hr.
TEMP.
TIME
OFF
hr.
TEMP.
TEMP.
TIME
OFF
hr.
TIME
OFF
hr.
TEMP.
TIME
OFF
hr.
TEMP.
Cooling
Healthy
Dehumidification
Heating
(Heat pump model only)
To raise the temperature
To lower the temperature
TEMP.
TIME
OFF
hr.
Press the OFF Time Button.
Timer control Setting
OFF TIMER CONTROL SETTING
Heating Operation(Heat pump model only)
Press the Start/Stop button. The unit
will respond with a beep.
1
To select Heating Operation, press the Operation Mode
Selection button.
Each time the button is pressed, the operation mode is
shifted in the direction of the arrow.
Set the temperature higher than the room temperature.
The temperature can be set within a range of 16°C~30°
in 1°C increments.
2
3
Set the fan speed again with the door of the
remote control still closed. You can select
the fan speed in four steps-low, medium,
high, or CHAOS.
Each time the button is pressed, the fan
speed mode is shifted.
1. Press the OFF Time Button.
2. Check the OFF Time LED of the room air conditioner.
3. The Timer is programmed by 1 hour each pressing
the OFF Time button from 1 hour to 7 hours.
4
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