LG A12LL User guide

P/NO : MFL68124603

OWNER’S MANUAL

Please read this manual carefully before operating
your set and retain it for future reference.

TYPE : WALL MOUNTED INVERTER

AIR
CONDITIONER

www.lg.com

ENGLISH

ITALIANO

ESPAÑOL

FRANÇAIS

DEUTSCH

ΕΛΛΗΝΙΚA

PORTUGUESE

NEDERLANDS

POLSKI

MAGYAR

БЪЛГАРСКИ

2

TIPS FOR SAVING ENERGY

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.

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 :

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.

• Appliance shall be installed in accordance with national wiring regulations.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.

• 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.

• When the power cord is to be replaced, replacement work shall be performed by authorized
personnel only using only genuine replacement parts.

Installation

• Use a standard circuit breaker and fuse conforming with the rating of the air conditioner. Fail­ure to do so may result in electric shock or product failure.

• Contact an authorized service center when you install or relocate the air conditioner. Failure to
do so may result in serious injury or product failure.

• Always use a power plug and socket with a ground terminal.Failure to do so may result in
electric shock or product failure

• Install the panel and the cover of the control box safely. Failure to do so may result in explo­sion or fire.

• Install a dedicated electric outlet and circuit breaker before you use the air conditioner. Failure
to do so may result in electric shock or product failure.

• Do not modify or extend the power cable. If the power cable or cord has scratches or skin
peeled off or deteriorated then it must be replaced. It may result in fire or electric shock.

• Be cautious when you unpack or install the air conditioner. Failure to do so may result in seri­ous injury or product failure.

• Do not install the air conditioner on an unstable surface or where there may be a danger of it
falling. It may result in death, serious injury, or product failure.

• Use inflammable gas (nitrogen) to inspect leak and to purge air, using compressed air or flam­mable gas may cause fire or explosion.

!

!

!

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IMPORTANT SAFETY INSTRUCTIONS

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Operation

• Do not let the air conditioner run for a long time when the humidity is very high or when a door or
window has been left open. Failure to do so may result in product failure.

• Make sure that the power cord is not pulled or damaged while the air conditioner is operating. Fail­ure to do so may result in fire, electric shock, or product failure.

• Do not place any objects on the power cord. It may result in electric shock or product failure.

• Do not turn on or off the air conditioner by plugging in or unplugging the power plug. It may result in
fire or electric shock.

• Do not touch, operate or repair the air conditioner with wet hands. It may result in electric shock or
product failure.

• Do not place a heater or other heating appliances near the power cable. It may result in fire, electric
shock, or product failure.

• Do not allow water to run into the air conditioner. It may result in explosion or fire.

• Do not leave flammable substances such as gasoline, benzene and thinner near the air conditioner.
It may result in explosion or fire.

• Do not use the air conditioner for an extended period of time in a small place without ventilation.
Ventilate the place regularly. Failure to do so may result in explosion or fire.

• When there is a gas leak, ventilate sufficiently before using the air conditioner again. Failure to do so
may result in explosion or fire.

• Unplug the power plug if there is a noise, smell or smoke coming from the air conditioner. Failure to
do so may result in explosion or fire.

• Stop operating and close the window in strom or hurricane.If possible remove the product from the
window before hurricane arrives

• Do not touch the electrostatic filter after opening the front grille. Failure to do so may result in elec­tric shock or product failure.

• Contact an authorized service center when the air conditioner is submerged into water due to flood­ing. Failure to do so may result in explosion or fire.

• Be cautious water could not enter the product

• Make sure to ventilate sufficiently when this air conditioner and a heating appliance such as a heater
are used simultaneously. Failure to do so may result in fire, serious injury, or product failure.

• Turn the main power off and unplug the power plug when you clean or repair the air conditioner.
Failure to do so may result in death, serious injury, or product failure.

• Unplug the power plug when the air conditioner is not used for an extended period of time. Failure
to do so may result in product failure.

• Do not place any objects on the air conditioner. It may result in product failure.

• For inner cleaning, contact an Authorized Service Center or a dealer. Do not use harsh detergent
that causes corrosion or damage on the unit. Harsh detergent may also cause failure of product, fire,
or electronic shock.

• 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 should be supervised to ensure that they do not play with the appliance.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION

Installation

• Make sure to check if there is a refrigerant leak after you install or repair the air conditioner. Failure
to do so may result in product failure.

• Install the drain hose properly for smooth drainage of condensed water. Failure to do so may result
in product failure.

• Keep level even when installing the product.

• Install the air conditioner where the noise from the outdoor unit or the exhaust gas will not incon­venience the neighbors. Failure to do so may result in conflict between neighbors.

• When transporting the equipment, there should be at least 2 or more people, or a forklift. It may re­sult in serious injury.

• Do not install the air conditioner where it will be exposed to sea wind (salt spray) directly. It may re­sult in product failure.

Operation

• Do not expose people, animals or plants to the cold or hot wind from the air conditioner. It may re­sult in serious injury.

• 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. It may result in death, fire or electric
shock.

• Do not block the inlet or outlet of air flow. It may result in explosion or product failure.

• Do not use strong cleaning agents or solvents when you clean the air conditioner, or spray water.
Use a smooth cloth. It may result in serious injury or product failure.

• Never touch the metal parts of the air conditioner when you remove the Air filter. It may result in se­rious injury or product failure.

• Do not place any objects on the air conditioner. It may result in product failure.

• Always insert the filter securely after cleaning. Clean the filter every two weeks or more often if
necessary.

• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is operat­ing. It may result in electric shock.

• Do not drink the water drained from the air conditioner. It may result in serious health complications.

• Use a sturdy stool or ladder when you clean, maintain or repair the air conditioner at a height. Failure
to do so may result in serious injury or product failure.

• Do not mix the batteries for the remote control with other types of batteries or mix new batteries
with used batteries. Failure to do so may result in product failure.

• Do not recharge or disassemble the batteries. Failure to do so may result in explosion, fire or serious
injury.

• Stop using the remote control if there is a battery fluid leak. If your cloth or skin is exposed to the
battery fluid from a leak, wash it off with clean water. Failure to do so may result in serious injury.

• If you swallow the battery fluid from a leak, wash out the inside of your mouth thoroughly and then
consult a doctor. Failure to do so may result in serious health complications.

• Do not open or close the front panel by force during the front panel moving.

• Should open front panel after lift down front panel slowly when the product is operating.

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TABLE OF CONTENTS

2

TIPS FOR SAVING ENERGY

3 IMPORTANT SAFETY

INSTRUCTIONS

7 BEFORE USE

7 Components

8 Using the remote control

9 - Inserting batteries

9 - Installing the remote control holder

10 BASIC FUNCTIONS

10 Cooling your room

10 Heating your room

10 Removing humidity

11 Airing your room

11 Adjusting the fan speed

11 Adjusting the air flow direction

11 Setting the timer

11 - Setting the current time

12 - Turning on the air conditioner

automatically at a set time

12 - Turning off the air conditioner

automatically at a set time

12 - Setting sleep mode

12 - Canceling the timer setting

13 ADVANCED FUNCTIONS

13 Changing room temperature quickly

13 Auto indoor cleaning

13 - Auto Clean operation

13 Display the current energy usage

14 Plasmaster Purification operation

14 Auto operation

14 Auto Changeover operation

15 Silent mode

15 Energy Control mode

15 Display screen brightness

16 Operating the air conditioner without the

remote control

17 Restarting the air conditioner

automatically

18 MAINTENANCE

20 Cleaning the Air filter

20 Cleaning the 3M filter

21 TROUBLESHOOTING

21 Self-diagnosis function

21 Before requesting service

TABLE OF CONTENTS

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BEFORE USE

Components

Outdoor unit

NOTE

!

• The number of operation lamps and their locations may vary, depending on the model of
the air conditioner.

7

BEFORE USE

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Indoor unit

* The feature can be changed according to a type of model.

* The feature can be changed according to a type of model.

Operation ranges

The table below indicates the temperature ranges the air conditioner can be operated within.

Mode Indoor temperature Outdoor temperature
Cooling 18°C~32°C -10°C~48°C
Heating 16°C~30°C -15°C~24°C

Front panel

3M filter

Air filter

Ionizer

Air outlet

Air inlet

Air deflector
(Vertical louver & Horizontal vane)

On/ Off button

Display

Signal
receiver

Air Intake Vents

Connecting
Wires

Piping

Air Outlet Vents

Drain Hose

Base Plate

BEFORE USE

8

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Using the remote control

You can operate the air conditioner more conveniently with the remote control.

Wireless remote control

* Some functions may not be supported, depending on the

model.

Control

panel

Display

screen

Description

A

K

IONIZER button* : Plasmaster Ionizer
sterilize the aerial bacteria and other
harmful substances.

l

l

Sleep mode auto button*: Sets the
sleep mode auto operation.

_

o

Temperature adjustment buttons:
Adjusts the room temperature when
cooling and heating.

|

- On/Off button: Turns the power on/off.

g

L

Indoor fan speed button: Adjusts the
fan speed.

f

AC

DBE

Operation mode selection button*:
Selects the operation mode.
Cooling operation (A) / Auto operation
or auto changeover (C) /
Dehumidifying operation (D) / Heating
operation (B) / Air circulation (E)

M

m

Jet cooling/heating button*: Warms up
or cools down the indoor temperature
within a short period of time.

DE

IJ

Air flow direction button: Adjusts the air
flow direction vertically or horizontally.

S

Temperature display button: Displays the
room temperature.

mn

n

Timer button: Sets the start / end time.

C
B

I

J

J

Navigation and functions button*: Adjusts
the time and sets the special functions.
I: Operates SILENT mode / J Operates
E/Control mode / J: Auto Clean. Press

for 3 sec. Silent Mode and E/Control

are not available at the same time.

G

-

LIGHT button: Adjusts the brightness
of the indoor unit display.

-

Energy Display Button : Set whether or not
to display information regarding Energy.

-

Filter button : When cleaning the filter,
press for 3sec.

p

-

Set/clear button: Sets or cancels
functions.

r

-

Reset button: Resets the air
conditioner settings.

Display
screen

Control
panel

9

BEFORE USE

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Inserting batteries

Insert batteries before using the remote
control. The battery type used is AAA (1.5 V)

1 Remove the battery cover.

2 Insert the new batteries and make sure

that the + and - terminals of the batteries
are installed correctly.

3 Reattach the battery cover.

Installing the remote control holder

Install the holder where there is no direct sun­light to protect the remote control.

1 Choose a safe and easily-accessible place.

2 Fix the holder by fastening the 2 screws

firmly with a screwdriver.

3 Slide the remote control into the holder.

Point the remote control towards the signal
receiver at the bottom of the air conditioner to
operate it.

NOTE

!

If the display screen of the remote control
starts to fade, replace the batteries.

NOTE

!

• The remote control may operate other
electronic devices if pointed towards
them. Make sure to point the remote
control towards the signal receiver of
the air conditioner.

• For proper operation, use a soft cloth to
clean the signal transmitter and receiver.

Operating method

BASIC FUNCTIONS

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Cooling your room

(Cooling operation)

1 Press | to turn on the power.
2 Press f repeatedly to select the cooling

operation.

- A is displayed on the display screen.

3 Press

G

or Hto set the desired temper-

ature.

- The temperature range is 18°C(64°F) –
30°C(86°F)

4 Press g to adjust the fan speed.

Heating your room

(Heating operation)

1 Press | to turn on the power.
2 Press f repeatedly to select the heating

operation.

- B is displayed on the display screen.

3 Press

G

or Hto set the desired temper-

ature.

- The temperature range is 16°C(60°F) –
30°C(86°F)

4 Press g to adjust the fan speed.

Removing humidity

(Dehumidifying operation)

This mode removes excess moisture from an
environment with high humidity or in the rainy
season, in order to prevent mold from setting
in. This mode adjusts the room temperature
and the fan speed automatically to maintain
the optimal level of humidity.

1 Press | to turn on the power.
2 Press f repeatedly to select the dehu-

midifying operation.

-

D is displayed on the display screen.

NOTE

!

• In this mode you cannot adjust the room
temperature, as it is adjusted automati­cally. Also, the room temperature is not
displayed on the display screen.

NOTE

!

Cooling-only models do not support this
function.

BASIC FUNCTIONS

11

BASIC FUNCTIONS

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Airing your room

(Air Circulation operation)

This mode only circulates the indoor air
without changing the room temperature.

1 Press | to turn on the power.
2 Press f to select the air circulation oper-

ation.

- E is displayed on the display screen.

3 Press g to adjust the fan speed.

Adjusting the fan speed

1 Press g repeatedly to adjust the fan

speed.

- Select 5if you want natural air.
The fan speed adjusts automatically.

Adjusting the air flow direc­tion

1 To adjust the direction of the air flow hori-

zontally(vertically), press ( ) repeat­edly and select the desired direction.

- Select I (J) to adjust the direction of

the air flow automatically.

Setting the timer

You can use the timer function to save energy
and to use the air conditioner more efficiently.

Setting the current time

1 Press t and hold it for longer than 3

seconds.

- The AM/PM icon flickers at the bottom of
the display screen.

2 Press

E

or Fto select the minutes.

3 Press

p

to finish.

NOTE

!

• Adjusting the air flow direction vertically
may not be supported, depending on
the model.

• Adjusting the air deflector arbitrarily may
cause product failure.

• If you restart the air conditioner, it starts
to operate with the previously set direc­tion of air flow, so the air deflector may
not match the icon displayed on the re­mote control. When this occurs, press

or to adjust the direction of the

air flow again.

Remark Speed

High

Medium-High

Medium

Medium-Low

Low

Natural Wind

BASIC FUNCTIONS

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Turning on the air conditioner auto­matically at a set time

1 Press m.

- The icon below flickers at the bottom of
the display screen.

2 Press

E

or Fto select the minutes.

3 Press p to finish.

- is displayed on the indoor unit display.

4 When setting the timer, current time and

ON icon are displayed on the display
screen indicating that the desired time is
set.

Turning off the air conditioner auto­matically at a set time

1 Press n.

- The icon below flickers at the bottom of
the display screen.

2 Press

E

or Fto select the minutes.

3 Press p to finish.

- is displayed on the indoor unit display.

4 When setting the timer, current time and

OFF icon are displayed on the display
screen indicating that the desired time is
set.

Setting sleep mode

Use the sleep mode to turn off the air condi­tioner automatically when you go to sleep.

1 Press | to turn on the power.
2 Press l.
3 Press

E

or Fto select the hour

(up to 7 hours).

4 Press p to finish.

-

T is displayed on the display screen in

sleep mode.

- is displayed on the indoor unit dis­play.

Canceling the timer setting

1 Press m, n or l to select the timer

setting to cancel.

2 Press p.

- To cancel all timer settings, press

p.

NOTE

!

• In the Cooling and Dehumidifying
modes, the temperature increases by
1°C after 30 minutes and by a further
1°C after another 30 minutes for a more
comfortable sleep.

• The temperature increases with up to
2°C from the preset temperature.

• Fan speed can't be changed in case of
sleep mode. Super low fan speed is set
up at cooling and low fan speed is set
up at heating.

13

ADVANCED FUNCTIONS

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NOTE

!

• In Air Circulation, Auto, or Auto
Changeover mode, this function cannot
be used.

• This function may not be supported, de­pending on the model.

Auto indoor cleaning

Auto Clean operation

In the cooling and dehumidifying operations,
moisture is generated inside the indoor unit.
Use the auto cleaning function to remove
such moisture.

1 Press | to turn on the power.
2 Press for 3 seconds.

-

J is displayed on the display screen.

- If you turn off the power, the fan oper­ates for 30 minutes and cleans the inside
of the indoor unit.

- is displayed on the indoor unit display.

Display the current energy usage

It is a function displaying the amount of elec­tricity generated on the indoor display as the
product operates.

1 Press | to turn on the power.
2 Press .

- The instantaneous power consumption is
displayed for a while on the indoor unit
display.

NOTE

!

Some buttons cannot be used while the
auto cleaning function is in operation.

NOTE

!

• When entering a function, it is not dis­played separately on the wireless re­mote control.

• The actual power may differ from its dis­played power.

The air conditioner offers some additional ad­vanced functions.

Changing room temperature
quickly

(Jet Cool/Heat operation)

This mode allows you to cool indoor air
quickly

in summer or warm it quickly in winter.

1 Press | to turn on the power.
2 Press

M

.

-

m is displayed on the indoor unit display.

- In jet cooling mode, strong air blows out
at a temperature of 18°C (64°F) for 30
minutes.

- In jet heating mode, strong air blows out
at a temperature of 30°C (86°F) for 30
minutes.

ADVANCED FUNCTIONS

ADVANCED FUNCTIONS

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ENGLISH

NOTE

!

• You can use this function by pressing

A

without turning the air conditioner

on.

• This function may not be supported, de­pending on the model.

• Do not touch Plasmaster ionizer during
operation.

Auto Changeover operation

This mode changes the operation mode automati­cally to maintain the set temperature at ±2°C.

1 Press | to turn on the power.
2 Press f repeatedly to select the auto

changeover operation.

-

C is displayed on the display screen.

3

PressG or Hto set the desired temperature.

- The temperature range is 18°C (64°F) ~
30°C (86°F).

4

Press g repeatedly to select the fan speed.

NOTE

!

This function may not be supported,
depending on the model.

Cooling-only models

Auto operation

(Artificial intelligence)

In this mode, the fan speed and the tempera­ture adjust automatically, based on the room
temperature.

1 Press | to turn on the power.
2 Press f repeatedly to select auto opera-

tion.

-

C is displayed on the display screen.

3 PressG or Hto select the desired opera-

tion code if the temperature is higher or
lower than the desired temperature.

NOTE

!

• In this mode, you cannot adjust the fan
speed, but you can set the air deflector
to rotate automatically.

• This function may not be supported, de­pending on the model.

Plasmaster Purification operation

Ion particles from Plasmaster Ionizer devel­oped by LG sterilize the aerial bacteria and
other harmful substances.

1 Press | to turn on the power.
2 Press A.

-

K is displayed on the display screen.

-

K is displayed on the indoor unit display.

Heat pump models

Code

Description

Cool

2

Cool slightly

1

Maintain

0

room
temperature

-1

Heat slightly

-2

Heat

15

ADVANCED FUNCTIONS

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Display screen brightness

You can adjust the brightness of the indoor
unit display screen.

1 Press

G

to turn on/off the indoor unit

display.

Energy Control mode

It is Brings the effect of the power saving.
(Setting available in air cooling mode)

1 step : The power Input in cooling mode

is decreased by 20% compared
to rated power Input

2 step : The power Input in cooling mode

is decreased by 40% compared
to rated power Input

NOTE

!

•

Setting available only under operation-ON.
Silent Mode and E/Control are not avail­able at the same time. If E/Control is
pressed under Silent Mode, Silent Mode is
released and E/Control works.

• Capacity may decrease when outdoor
unit silent mode is selected.

• In Air Circulation, Humidity mode, this
function cannot be used.

NOTE

!

• In Cooling mode, this function can be
used.

• Every time E/Control on wireless remote
controller is pressed, 1Step, 2Step, func­tions release are repeated and switched
Wanted temperature appears for 5 sec.

• Capacity may decrease when outdoor
unit Energy Control mode is selected.

NOTE

!

This function may not be supported,
depending on the model.

Silent Mode Function available under the
below temperature set

- Cooling-possible temperature range: Indoor
18°C (64°F) ~ 30°C (86°F), Outdoor 18°C
(64°F) ~ 43°C (109°F)

- Heating-possible temperature range: Indoor
16°C (60°F) ~ 30°C (86°F), Outdoor 6°C
(43°F) ~ 24°C (75°F)

Energy Control mode Function available under
the below temperature set

- Cooling-possible temperature range:
Indoor 18°C(64°F) ~ 30°C (86°F),
Outdoor 21°C(70°F) ~ 32°C (90°F)

1 Step Entrance 2 Step Entrance

1 Press | to turn the power on.
2 Press

B

.

-

J is displayed on the display screen.

Silent mode

It is to prevent potential claims by neighbors,
reducing noise from outdoor units.

The outdoor unit sound pressure in cooling
and heating mode is decreased by 3dB com­pared to the rated sound pressure

1 Press | to turn the power on.
2 Press

C

.

-

I is displayed on the display screen.

16

ADVANCED FUNCTIONS

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Room temp. Set temp.

Operation

mode

Below 21°C 24°C

Heating
operation

Above 21°C
and below
24°C

23°C

Dehumidify­ing operation

Above 24°C 22°C

Cooling
operation

In case of turning On

1 Open the front panel.

- Lift up both sides of the panel slightly.

2 Press the On/Off button.

- The front panel is moved down.
(Clicking sound)

* The feature can be changed according to

a type of model.

In case of turning Off

Operating the air conditioner
without the remote control

You can use the On/Off button of the indoor
unit to operate the air conditioner when the
remote control is unavailable. However, the
fan speed is set to high.

1 Open the front panel.

- Lift up both sides of the panel slightly.

2 Press the On/Off button.

3 Close the front panel as soon as you press

on/off button.

- Lift down both sides of the panel slightly.

* The feature can be changed according to

a type of model.

- For cooling and heating models, the oper­ation mode changes, depending on the
room temperature.

- For cooling-only models, the temperature
is set to 22°C.

NOTE

!

• If not sounding clicking at both sides,
push both sides of the front panel.

No Clicking
Sound

Clicking Sound

No Clicking

No Clicking
Sound

Sound

ADVANCED FUNCTIONS

17

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Restarting air conditioner au­tomatically

When the air conditioner is turned on again after
a power failure, this function restores the previ­ous settings. This function is a factory default set­ting.

1 Open the front panel.

- Lift up both sides of the panel slightly.

Disabling auto restart

2 Press the On/Off button and hold it for 6

seconds.

- The unit will beep twice and the lamp will
blink 8 times.

- To re-enable the function, press the On/
Off button and hold it for 6 seconds. The
unit will beep twice and the blue lamp
will blink 4 times.

* The feature can be changed according to

a type of model.

NOTE

!

• If you press and hold the On/Off button
for 3 – 5 seconds instead of 6 seconds,
the unit will switch to the test operation.

• In the test operation, the unit blows out
strong air for cooling for 18 minutes and
then returns to the factory default set­tings.

MAINTENANCE

MAINTENANCE

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If the air conditioner will not be used for an extended of time, dry the air conditioner to maintain it
in best condition.

1 Dry the air conditioner in Fan mode for 3 to 4 hours and disconnect the power plug. There

may be internal damage if moisture is left in components.

2 Before using the air conditioner again, dry the inner components of the air conditioner in Fan

mode for 3 to 4 hours. This will help to remove odor which is generated from moisture.
Clean the product regularly to maintain optimal performance and to prevent possible breakdown.
* This may not be provided, depending on the model.

* The feature can be changed according to a type of model.

Type Description Interval

Air filter See “Cleaning the filter.” 2 weeks

Ionizer See “Cleaning the Ionizer” 6 months

3M filter See ” Cleaning the 3M filter ” 1 month

Indoor unit

Clean the Indoor unit surface by using a soft, dry cloth. Regularly

Clean the condensate drain pipe. Every 4 months

Clean the condensate drain pan. Once a year

Thoroughly clean the heat exchanger. Once a year

Replace the remote control batteries. Once a year

Outdoor unit

Use steam to clean the heat exchanger coils and the
panel vents. (consult with technician)

Regularly

Clean the fan. Once a year

Clean the condensate drain pan. Once a year

Verify that all the fan assembly is firmly tightened. Once a year

Verify that electric components with jets of air. Once a year

Clean the electric components with jets of air. Once a year

3M filter

Ionizer

Air filter

MAINTENANCE

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CAUTION

• Turn off the power and unplug the power cord before you perform any maintenance; other­wise it may cause electric shock.

• Never use water that is hotter than 40°C when you clean the filters. It may cause deforma­tion or discoloration.

• Never use volatile substances when you clean the filters. They may damage the surface of
the product.

• Do not washed the 3M filter with water, because the filter can be damaged

!

Cleaning the Ionizer

• Turn off the power and unplug the power cord.

• Use dry cotton bud to remove any dust.

Note : The Ionizer may not be included in some models.

NOTE

!

• The location and shape of the filters may differ, depending on the model.

• Make sure to clean the heat exchanger coils of the outdoor unit regularly, as dirt collected
in the coils may decrease the operational efficiency or increase energy costs.

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Cleaning the Air filter

Clean the Air filter once every 2 weeks or
more if necessary.

1 Turn off the air conditioner.
2 Press for about 3 seconds.
3 Open the front panel.

- Lift up both sides of the panel slightly.

4 Hold the knob of the Air filter, lift it up

slightly and remove it from the unit.

* The feature can be changed according to

a type of model.

5 Clean the filter with a vacuum cleaner or

with warm water.

- If dirt is difficult to remove, wash the filter
in lukewarm water with detergent.

6 Dry the filter in the shade.

7 Set a filter and close the front panel.

8 Press for about 3 seconds.

- The front panel is moved down. (clicking
sound)

Cleaning the 3M filter

1 Turn off the air conditioner.
2 Press for about 3 seconds.
3 Open the front panel and remove the Air

filter (see “Cleaning the Air filter.”).

4 Pull out the 3M filter.

* The feature can be changed according to

a type of model.

5 Use a vacuum cleaner to remove dirt, Do

not wash the 3M filter with water, be­cause the filter can be damaged.

NOTE

!

• (Filter button) is available after re­mote controller is off.

NOTE

!

• If not sounding clicking at both sides,
push both sides of the front panel.

NOTE

!

• The location of the filters may differ,
depending on the model.

• We suggest changing the 3M filter
every 6 months.

• If you need more filters, please contact
the LG service center (Refer to the war­ranty card)

No Clicking
Sound

No Clicking

No Clicking
Sound

Sound

TROUBLESHOOTING

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Self-diagnosis function

This product has a built-in self-diagnosis function. If an error occurs, the lamp of the indoor unit
will blink in 2 second intervals. If this occurs, contact your local dealer or service center.

Before requesting service

Please check the following before you contact the service center. If the problem persists, contact
your local service center.

Problem Possible causes Corrective action

Abnormal operating
conditions.

• There is a burning
smell and a strange
sound coming from
the unit.

• Turn off the air conditioner, unplug the
power cord and contact the service
center.

• Water leaks from
the indoor unit even
when the humidity
level is low.

• The power cord is
damaged or
generating
excessive heat.

•

A switch, a circuit
breaker (safety,
ground) or a fuse is
not operated properly.

The air conditioner does not
work.

• The air conditioner
is unplugged.

• Check whether the power cord is
plugged into the outlet.

• A fuse is blown or
the power supply is
blocked.

• Replace the fuse or check if the circuit
breaker has tripped.

• A power failure has
occurred.

• Turn off the air conditioner when a power
failure occurs.

• When the power is restored, wait 3
minutes, and then turn on the air
conditioner.

• The voltage is too
high or too low.

• Check if the circuit breaker has tripped.

• The air conditioner
turned off
automatically at a
preset time.

• Press the power button again.

• Battery setting is
wrong in the remote
controller.

• Is the battery inserted in Remoted
controler? Is the battery inserted with the
correct terminal (+)(-)?

• Even if you check the upper lists, the
air-conditioner does not operate. Please
replace new batteries.

TROUBLESHOOTING

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Problem Possible causes Corrective action

The air conditioner does not
generate cool air.

• Air is not
circulatingproperly.

• Make sure that there are no curtains,
blinds or furniture blocking the front of
the air conditioner.

• The air filter is dirty.

• Clean the air filter once every 2 weeks.

• See “Cleaning Air Filter” for more
information.

• The room
temperature is too
high.

• In summer, it may take some time to
cool indoor air.

• In this case, select the jet cool operation
to cool indoor air quickly.

• Cold air is escaping
from the room.

• Make sure that no cold air is escaping
through ventilation points in the room.

•

The desired
temperature is
higher than the set
temperature.

• Set the desired temperature to a level
lower than the current temperature.

• There is a heating
source nearby.

• Avoid using a heat generator such as an
electric oven or a gas burner while the air
conditioner is in operation.

• Air circulation
operation is
selected.

• In the air circulation operation, air blows
from the air conditioner without cooling
or heating the indoor air.

• Switch the operation mode to the cooling
operation.

• Outside
temperature is too
high.

• The cooling effect may not be sufficient.

The air conditioner does not
generate warm air.

• When the heating
mode is started.

• Vane is almost
closed and air flow
does not come out.

• Even though
outdoor unit is
already begun to
operate.

• This symptom is normal.

• Please wait until the unit is preparing
warm air.

• This function prepare to blow warm air.

• Defrosting mode is
being done in the
outdoor unit.

• In heating mode, ice/frost is built up on
the coils when the outside temperature
fall down.

• This function remove a layer of frost on
the coil.

• Please wait until this operation is
completed. It takes about 15 mins.

• Outside
temperature is too
low.

• The heating effect may not be sufficient.

TROUBLESHOOTING

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Problem Possible causes Corrective action

The
air-conditioner
stops during
operation.

• The air conditioner is suddenly
turn off.

• The timer function could be
operated. If the timer function
would operate, the air-conditioner
can be turn off.

• Check the timer setting is correct.

• A power failure has occurred
during operation.

• There is the Auto Restart Function.
It is a default setting.

• This function can turn on the unit
automatically when the power is
restored.

• If you live in frequent power failure
area, this function would be useful.

Indoor unit is still
operating even
when the power
is being turned
off.

• Auto-Clean mode is being
operated.

• This function is to remove the
rest of moisture indoor unit.

• Please, wait until the end of
functions.

• It will be inhibit a fungal growth.
If you do not want this feature, you
can turn off to press .

Mist is discharged
from the air outlet
of the indoor unit.

• The cooled air from the air
conditioner makes mist.

• When the room temperature is
down, this phenomenon will
disappear.

Water leaks from
the outdoor unit.

• In the heating operations,
condensed water drop from the
heat exchanger.

• This symptom need to install drain
hose under the base pan.

• Contact the installer.

Operating noise
or vibration.

• Clicking sound
Clicking sound can be heard

either when the unit starts or
stops due to movement of
reversing valve.

• Creaking sound
The plastic parts of the indoor

unit make sound of shrinks and
expands due to a sudden
temperature change.

• The water flowing sound,

Blowing sound

The flow of refrigerant through
the air conditioner is switching,
noise can be heard.

• These are normal symptoms.

• After a moment, it will be silent.

The indoor unit
gives out odor.

• The air smells bad because a

musty or cigarettes odor may be
absorbed into the indoor unit and
discharged with airflow.

• If the smell does not disappear, you
need to wash filter or heat
exchanger.

• Contact the installer.

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