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P/NO : MFL67657201
OWNER’S MANUAL
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : WALL MOUNTED
AIR
CONDITIONER
www.lg.com
ENGLISH
ITALIANO ESPAÑOL
FRANCAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
PORTUGUESE
NEDERLANDS
POLSKI
MAGYAR
1

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  • Page 1

    ENGLISH
    ITALIANO
    ESPAÑOL
    FRANCAIS

    OWNER’S MANUAL

    DEUTSCH

    AIR
    CONDITIONER

    ΕΛΛΗΝΙΚΆ
    PORTUGUESE
    NEDERLANDS

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

    www.lg.com

    MAGYAR

    P/NO : MFL67657201

    POLSKI

    TYPE : WALL MOUNTED



  • Page 2

    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 :



  • Page 3

    IMPORTANT SAFETY INSTRUCTIONS

    3

    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.
    • 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.
    • 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.

    ENGLISH

    IMPORTANT SAFETY INSTRUCTIONS



  • Page 4

    4

    IMPORTANT SAFETY INSTRUCTIONS

    ENGLISH

    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.



  • Page 5

    IMPORTANT SAFETY INSTRUCTIONS

    5

    ENGLISH

    ! 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.

    Operation ranges
    The table below indicates the temperature ranges the air conditioner can be operated within.
    Mode
    Cooling
    Heating

    Indoor temperature
    18°C~32°C
    16°C~30°C

    outdoor temperature
    -10°C~48°C
    -15°C~24°C



  • Page 6

    6

    TABLE OF CONTENTS

    ENGLISH

    TABLE OF CONTENTS
    2 TIPS FOR SAVING ENERGY
    3 IMPORTANT SAFETY
    INSTRUCTIONS

    7 BEFORE USE
    7

    Components

    8

    Using the remote control

    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

    12

    Setting sleep mode

    13 ADVANCED FUNCTIONS
    13

    Changing room temperature quickly

    13

    Indoor air purification

    14

    Plasmaster Purification operation
    (optional)

    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

    16

    Restarting the air conditioner
    automatically

    17

    Cleaning the air filter

    17

    Cleaning the 3M Micro Protection Filter

    18 MAINTENANCE
    20 TROUBLESHOOTING
    20

    Self-diagnosis function

    20

    Before requesting service



  • Page 7

    BEFORE USE

    ENGLISH

    BEFORE USE
    Components
    Indoor unit
    Air inlet
    Front grille
    Air filter
    On/ Off button
    Signal receiver
    Operation lamp
    Air outlet
    Air deflector
    (Vertical louver & Horizontal vane)

    Plasmaster Ionizer

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

    !

    7

    NOTE

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

    Outdoor unit
    Air Intake Vents
    Connecting
    Wires

    Piping

    Air Outlet Vents

    Drain Hose
    Base Plate

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



  • Page 8

    8

    BEFORE USE

    ENGLISH

    Using the remote control
    You can operate the air conditioner more conveniently with the remote control. You will find the
    buttons for the additional functions under the cover of the remote control.

    Wireless remote control

    Control Display
    panel
    screen

    A
    Display
    screen

    l

    IONIZER button*: Plasmaster Ionizer
    sterilize the aerial bacteria and other
    harmful substances.
    Sleep mode auto button*: Sets the
    sleep mode auto operation.

    _
    |
    g

    Control
    panel

    K

    Description

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

    L

    On/Off button: Turns the power on/off.
    Indoor fan speed button: Adjusts the
    fan speed.

    f

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

    M

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

    DE

    k

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

    S

    Temperature display button: Displays the
    room temperature. Also changes unit
    from °C to °F if pressed for 5 seconds.

    mn

    Timer button: Sets the current time and
    the start / end time.

    C
    B

    Navigation and functions button*: Adjusts the time and sets the special
    functions.
    I Operates SILENT mode / J Operates E/Control mode / J: Auto clean
    silent Mode and E/Control are not available at the same time

    H
    G

    I
    J
    J

    -

    Adjusts the brightness of the indoor
    unit display

    p

    -

    Set/clear button: Sets or cancels functions.

    r

    -

    Reset button: Resets the air conditioner settings.

    * Some functions may not be supported, depending on the
    model.



  • Page 9

    BEFORE USE

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

    2 Fix the holder by fastening the 2 screws
    firmly with a screwdriver.

    3 Slide the remote control into the holder.

    2 Insert the new batteries and make sure
    that the + and - terminals of the batteries
    are installed correctly.

    Operating method
    3 Reattach the battery cover.

    !

    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.

    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.

    !

    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.

    ENGLISH

    Inserting batteries

    9



  • Page 10

    10 BASIC FUNCTIONS

    ENGLISH

    BASIC FUNCTIONS
    Cooling your room

    Removing humidity

    (Cooling operation)
    1 Press | to turn on the power.
    2 Press f repeatedly to select the cooling

    (Dehumidifying operation)

    operation.
    - A is displayed on the display screen.

    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 dehumidifying operation.
    - D is displayed on the display screen.

    3 Press G or H to set the desired temperature.
    - The temperature range is 18°C (64°F) ~
    30°C (86°F).

    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 H to set the desired temperature.
    - The temperature range is 16°C (60°F) ~
    30°C (86°F).

    !

    NOTE

    Cooling-only models do not support this
    function.

    !

    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.



  • Page 11

    BASIC FUNCTIONS

    (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 repeatedly to select the air circulation operation.
    - E is displayed on the display screen.

    Adjusting the air flow direction
    1 To adjust the direction of the air flow horizontally, press D repeatedly and select
    the desired direction.
    - Select I to adjust the direction of the air
    flow automatically.
    2 To adjust the direction of the air flow vertically, press E repeatedly and select the
    desired direction.
    - Select J to adjust the direction of the
    air flow automatically.

    !

    3 Press g to adjust the fan speed.

    Adjusting the fan speed
    1 Press g repeatedly to adjust the fan
    speed.
    - Select 5 if you want natural air.
    The fan speed adjusts automatically.
    Remark

    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
    D or E to adjust the direction of the
    air flow again.

    Speed
    High
    Medium-High
    Medium
    Medium-Low
    Low
    Natural Wind

    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 p and hold it for longer than 3 seconds.
    - The AM/PM icon flickers at the bottom of
    the display screen.

    ENGLISH

    Airing your room

    11



  • Page 12

    12 BASIC FUNCTIONS

    ENGLISH

    2 PressEorFto select the minutes.
    3 Press p to finish.

    Canceling the timer setting
    1 Press p.
    - To cancel all timer settings, press p.

    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 PressEorFto select the minutes.
    3 Press p to finish.
    4 When setting the timer, current time and

    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 PressEorFto select the hour
    (up to 7 hours).
    4 Press p to finish.
    - T is displayed on the display screen in
    sleep mode.

    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 PressEorFto select the minutes.
    3 Press p to finish.
    4 When setting the timer, current time and
    OFF icon are displayed on the display
    screen indicating that the desired time is
    set.

    !

    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.



  • Page 13

    ADVANCED FUNCTIONS 13

    ENGLISH

    ADVANCED FUNCTIONS
    The air conditioner offers some additional advanced functions.

    Indoor air purification
    Auto Clean operation (optional)

    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.

    In the cooling and dehumidifying operations,
    moisture is generated inside the indoor unit.
    Use the auto cleaning function to remove
    such moisture.
    1 Press
    .
    - J is displayed on the display screen.

    H

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

    !

    NOTE

    • In Air Circulation, Auto, or Auto
    Changeover mode, this function cannot
    be used.
    • This function may not be supported, depending on the model.

    !

    NOTE

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



  • Page 14

    14 ADVANCED FUNCTIONS

    ENGLISH

    Plasmaster Purification operation (optional)

    Code
    2
    1
    0

    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.

    -1
    -2

    !

    Description
    Cool
    Cool slightly
    Maintain
    room
    temperature
    Heat slightly
    Heat

    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.

    !

    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.

    Auto operation
    (Artificial intelligence)
    Cooling-only models
    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 operation.
    3 PressG or Hto select the desired operation code if the temperature is higher or
    lower than the desired temperature.

    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.



  • Page 15

    ADVANCED FUNCTIONS 15

    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.

    1 Press | to turn the power on.
    2 PressB.
    - J is displayed on the display screen.

    1 Step Entrance

    2 Step Entrance

    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)
    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)

    !

    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.

    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 25% compared
    to rated power Input
    2 step : The power Input in cooling mode
    is decreased by 50% compared
    to rated power Input

    !

    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.

    Display screen brightness
    You can adjust the brightness of the indoor
    unit display screen.
    1 Press G repeatedly to set the brightness
    to the desired level.

    !

    NOTE

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

    ENGLISH

    Silent mode



  • Page 16

    16 ADVANCED FUNCTIONS

    ENGLISH

    Operating the air conditioner
    without the remote control

    Restarting the air conditioner
    automatically

    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 cover.
    - Lift up both sides of the cover slightly.

    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.

    Disabling auto restart
    1 Open the front cover.
    - Lift up both sides of the cover slightly.

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

    2 Press the On/Off button.

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

    2 Press the On/Off button and hold it for 6
    seconds.
    - The unit will beep twice and the lamp will
    blink 6 times.

    * The feature can be changed according to
    type of model.
    - For cooling and heating models, the operation mode changes, depending on the
    room temperature.
    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

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

    !
    Cooling
    operation

    - For cooling-only models, the temperature
    is set to 22°C (71.6°F).

    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.



  • Page 17

    ADVANCED FUNCTIONS 17

    Clean the air filter once every 2 weeks or
    more if necessary.
    1 Turn off the power and unplug the power
    cord.
    2 Open the front cover.
    - Lift up both sides of the cover slightly.

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

    3 Hold the knob of the air filter, lift it up
    slightly and remove it from the unit.

    Cleaning the 3M Micro Protection Filter
    1 Turn off the power and unplug the power
    cord.

    2 Open the front cover and remove the air
    filter (See “Cleaning the air filter”).

    3 Remove the 3M Micro Protection Filter

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

    4 Use a vacuum cleaner to remove dirt,
    Do not wash the 3M Micro Protection Filter with water, because the filter can be
    damaged.

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

    4 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.
    5 Dry the filter in the shade.

    NOTE

    • We suggest changing the 3M Micro
    Protection Filter every 6 Months
    • The location of the filters may differ,
    depending on the model.
    • If you need more filters, please contact
    the LG service center (Refer to the
    warranty card)

    ENGLISH

    Cleaning the air filter



  • Page 18

    18 MAINTENANCE

    ENGLISH

    MAINTENANCE
    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.

    3M Micro Protection Filter

    Air filter

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

    Type

    Description

    Air filter
    See “Cleaning the filter.”
    Plasmaster
    See “Cleaning the Plasmaster ionizer”
    ionizer
    3M Micro
    See ” Cleaning the 3M Micro Protection Filter ”
    Protection Filter
    Clean the Indoor unit surface by using a soft, dry cloth.
    Indoor unit

    2 weeks
    6 months
    1 months
    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

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

    Outdoor unit

    Interval

    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



  • Page 19

    MAINTENANCE 19

    ! 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

    !

    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.

    ENGLISH

    Cleaning the Plasmaster Ionizer(Optional)
    • Turn off the power and unplug the power cord.
    • Use dry cotton bud to remove any dust.
    Note : The plasmaster ionizer may not be included in some models.



  • Page 20

    20 TROUBLESHOOTING

    ENGLISH

    TROUBLESHOOTING
    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

    -

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

    The air conditioner is
    unplugged.

    Check whether the power cord is plugged
    into the outlet.

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

    A fuse is blown or the
    Replace the fuse or check if the circuit
    power supply is
    breaker has tripped.
    blocked.

    The air conditioner does not A power failure has
    work.
    occurred.
    The voltage is too
    high or too low.

    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.
    Check if the circuit breaker has tripped.

    The air conditioner
    turned off automati- Press the power button again.
    cally at a preset time.



  • Page 21

    TROUBLESHOOTING 21

    Possible causes

    Corrective action

    Air is not circulating
    properly.

    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.

    The air conditioner does not Cold air is escaping
    from the room.
    generate cool air.

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

    The desired temperaSet the desired temperature to a level
    ture is higher than the
    lower than the current temperature.
    set 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.

    It is not possible to adjust
    the fan speed.

    In some operation modes, such as the jet
    The auto operation,
    or dehumidifying operation modes, you
    jet operation or dehucannot adjust the fan speed. Select an opmidifying operation is
    eration mode in which you can adjust the
    selected.
    fan speed.

    It is not possible to adjust
    the temperature.

    In some operation modes, such as the air
    The air circulation op- circulation or jet operation mode, you caneration or jet operanot adjust the temperature. Select an option is selected.
    eration mode in which you can adjust the
    temperature.

    ENGLISH

    Problem



  • Page 22

    22

    ENGLISH



  • Page 23






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