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OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : CEILING CONCEALED DUCT
Original instruction
P/NO : MFL68821801
ENGLISH
PORTUGUESE
MAGYAR
БЪЛГАРСKN
SRPSKI
HRVATSKI
SVENDKA NORSK SUOMI DANSK
ITALIANO
ESPAÑOL FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
1

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Inhalt der Seiten


  • Page 1

    ENGLISH
    ITALIANO
    ESPAÑOL
    FRANÇAIS
    DEUTSCH

    SVENDKA

    ΕΛΛΗΝΙΚΆ

    NORSK

    ČEŠTINA

    SUOMI

    NEDERLANDS

    DANSK

    POLSKI
    LIMBA ROMÂNĂ

    www.lg.com
    P/NO : MFL68821801

    HRVATSKI

    Original instruction

    SRPSKI

    TYPE : CEILING CONCEALED DUCT

    БЪЛГАРСKN

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

    MAGYAR

    AIR CONDITIONER

    PORTUGUESE

    OWNER’S MANUAL



  • Page 2

    TABLE OF CONTENTS
    FOR YOUR RECORDS
    Safety Precautions.................3

    Write the model and serial numbers here:
    Model #

    Prior to Operation ..................6

    Serial #

    Maintenance and Service ......7

    You can find them on a label on the side of each unit.

    Before you Call for
    Service..................................9

    Dealer's Name
    Date Purchased
    n Staple your receipt to this page in the event you need
    to prove date of purchase or to issue warranty.

    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.
    • Installation work must be performed in accordance with
    the National Electric Code by qualified and authorized
    personnel only.

    2

    Indoor Unit



  • Page 3

    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.

    WARNING

    This symbol indicates the possibility of death or serious injury.

    CAUTION

    This symbol indicates the possibility of injury or damage to properties only.

    n Meanings of symbols used in this manual are as shown below.

    Be sure not to do.
    Be sure to follow the instruction.

    WARNING
    n Installation
    Do not use a defective or
    underrated circuit breaker. Use
    this appliance on a dedicated
    circuit.
    • There is risk of fire or electric
    shock.

    Install the panel and the cover
    of control box securely.

    For electrical work, contact the
    dealer, seller, a qualified
    electrician, or an Authorized
    Service Center.
    • Do not disassemble or repair the
    product. There is risk of fire or
    electric shock.
    Always install a dedicated
    circuit and breaker.

    Always ground the product.

    • There is risk of fire or electric
    shock.

    Use the correctly rated breaker
    or fuse.

    • There is risk of fire or electric
    shock.

    • Improper wiring or installation
    may cause fire or electric shock.

    • There is risk of fire or electric
    shock.

    Do not modify or extend the
    power cable.

    Do not install, remove, or reinstall the unit by yourself
    (customer).

    Be cautious when unpacking
    and installing the product.

    • There is risk of fire or electric
    shock.

    For installation, always contact
    the dealer or an Authorized
    Service Center.
    • There is risk of fire, electric shock,
    explosion, or injury.

    • There is risk of fire, electric shock,
    explosion, or injury.

    • Sharp edges could cause injury.
    Be especially careful of the case
    edges and the fins on the
    condenser and evaporator.

    Do not install the product on a
    defective installation stand.

    Be sure the installation area
    does not deteriorate with age.

    • It may cause injury, accident, or
    damage to the product.

    • If the base collapses, the air
    conditioner could fall with it, causing
    property damage, product failure,
    and personal injury.

    Owner’s Manual 3

    ENGLISH

    Safety Precautions



  • Page 4

    Safety Precautions
    Do not turn on the breaker or power under
    condition that front panel, cabinet, top cover,
    control box cover are removed or opened.
    • Otherwise, it may cause fire, electric shock, explosion or death.

    Use a vacuum pump or Inert (nitrogen) gas when
    doing leakage test or air purge. Do not compress
    air or Oxygen and Do not use Flammable gases.
    Otherwise, it may cause fire or explosion.
    • There is the risk of death, injury, fire or explosion.

    n Operation
    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 plug or unplug the
    power supply plug during
    operation.
    • There is risk of fire or electric
    shock.
    Do not allow water to run into
    electric parts.
    • It may cause There is risk of fire,
    failure of the product, or electric
    shock.

    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 touch(operate) the
    product with wet hands.
    • There is risk of fire or electrical
    shock.
    Do not store or use flammable
    gas or combustibles near the
    product.
    • There is risk of fire or failure of
    product.

    Do not place anything on the
    power cable.

    • There is risk of fire or electric
    shock.
    Do not place a heater or other
    appliances near the power
    cable.
    • There is risk of fire and electric
    shock.
    Do not use the product in a
    tightly closed space for a long
    time.
    • Oxygen deficiency could occur.

    When flammable gas leaks,
    turn off the gas and open a
    window for ventilation before
    turn the product on.

    If strange sounds, or small or
    smoke comes from product.
    Turn the breaker off or
    disconnect the power supply
    cable.

    Stop operation and close the
    window in storm or hurricane.
    If possible, remove the product
    from the window before the
    hurricane arrives.

    • Do not use the telephone or turn
    switches on or off.
    There is risk of explosion or fire.

    • There is risk of electric shock or
    fire.

    • There is risk of property damage,
    failure of product, or electric
    shock.

    Do not open the inlet grill of the
    product during operation.
    (Do not touch the electrostatic
    filter, if the unit is so equipped.)
    • There is risk of physical injury,
    electric shock, or product failure.

    When the product is soaked
    (flooded or submerged),
    contact an Authorized Service
    Center.
    • There is risk of fire or electric
    shock.

    Ventilate the product from time to time when
    operating it together with a stove, etc.
    • There is risk of fire or electric shock.
    When the product is not be used for a long time,
    disconnect the power supply plug or turn off the
    breaker.
    • There is risk of product damage or failure, or
    unintended operation.

    4

    Indoor Unit

    Be cautious that water could
    not enter the product.

    • There is risk of fire, electric shock,
    or product damage.

    Turn the main power off when cleaning or
    maintaining the product.
    • There is risk of electric shock.
    Take care to ensure that nobody could step on or
    fall onto the outdoor unit.
    • This could result in personal injury and product
    damage.



  • Page 5

    Safety Precautions

    Always check for gas (refrigerant) leakage
    after installation or repair of product.
    • Low refrigerant levels may
    cause failure of product.
    Do not install the product where the noise
    or hot air from the outdoor unit could
    damage the neighborhoods.
    • It may cause a problem for your
    neighbors.

    Install the drain hose to ensure that
    water is drained away properly.
    • A bad connection may cause
    water leakage.
    Use two or more people to lift and
    transport the product.
    • Avoid personal injury.

    n Operation
    Do not expose the skin directly
    to cool air for long periods of
    time. (Don't sit in the draft.)

    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.

    • This could harm to your health.

    • There is risk of damage or loss of property.

    Use a soft cloth to clean. Do
    not use harsh detergents,
    solvents, etc.

    Do not touch the metal parts of the
    product when removing the air
    filter. They are very sharp!

    • There is risk of fire, electric
    shock, or damage to the plastic
    parts of the product.
    Always insert the filter securely.
    Clean the filter every two weeks
    or more often if necessary.
    • A dirty filter reduces the efficiency of
    the air conditioner and could cause
    product malfunction or damage.

    ENGLISH

    CAUTION

    n Installation

    • There is risk of personal injury.

    Do not insert hands or other objects
    through the air inlet or outlet while the
    product is operated.
    • There are sharp and moving parts
    that could cause personal injury.

    Use a firm stool or ladder when
    cleaning or maintaining the
    product.

    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.

    • Be careful and avoid personal injury.

    • There is risk of fire or explosion.

    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.

    Keep level even when installing
    the product.
    • To avoid vibration or water
    leakage.
    Do not install the product where
    it will be exposed to sea wind
    (salt spray) directly.
    • It may cause corrosion on the product.
    Corrosion, particularly on the condenser
    and evaporator fins, could cause product
    malfunction or inefficient operation.
    Do not block the inlet or outlet
    of air flow.

    • It may cause product failure.
    Do not step on or put anyting
    on the product. (outdoor units)
    • There is risk of personal injury
    and failure of product.
    Do not drink the water drained
    from the product.
    • It is not sanitary and could cause
    serious health issues.

    Do not recharge or
    disassemble the batteries.
    Do not dispose of batteries in a
    fire.
    • They may burn or explode.

    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.

    Owner’s Manual 5



  • Page 6

    Prior to operation

    Prior to Operation
    Preparing for operation
    1. Contact an installation specialist for installation.
    2. Use a dedicated circuit.

    Usage
    1. Being exposed to direct airflow for an extended period of time could be hazardous to your health.
    Do not expose occupants, pets, or plants to direct airflow for extended periods of time.
    2. Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or
    other heating devices.
    3. Do not use this air conditioner for non-specified special purposes (e.g. preserving precision
    devices, food, pets, plants, and art objects). Such usage could damage the items.

    Cleaning and maintenance
    1. Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling
    sharp metal edges.
    2. Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation,
    leading to possible electric shock.
    3. When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates
    at a very high speed during operation. There is a possibility of injury if the unit’s power is
    accidentally triggered on while cleaning inner parts of the unit.

    Service
    For repair and maintenance, contact your authorized service dealer.

    6

    Indoor Unit



  • Page 7

    Maintenance and Service
    ENGLISH

    Maintenance and Service
    CAUTION: Before performing any maintenance, turn off the main power to
    the system.

    Grille, Case, and Remote Controller
    o Turn the system off before cleaning. To clean, wipe with
    a soft, dry cloth. Do not use bleach or abrasives.

    NOTICE

    Power supply must be disconnected before
    cleaning the indoor unit.

    Air Filters
    The air filters behind the front grille should be checked and
    cleaned once every 2 weeks or more often if neccessary.

    Air outlet vents

    Air filters

    1. Remove the Air filters.
    n Take hold of the tab and pull slightly forward
    to remove the filter.

    CAUTION: When the air filter is
    to be removed, do not touch the
    metal parts of the indoor unit.
    It may cause an injury.

    Air outlet vents

    Air filters

    n Never use any of the followings:
    • Water hotter than 40°C.
    Could cause deformation
    and/or discoloration.
    • Volatile substances.
    Could damage the
    SI
    surfaces of the air
    N NER
    B en
    conditioner.
    z ene

    2. Clean dirt from the air filter using a vacuum
    cleaner or washing with water.
    n If dirt is conspicuous, wash with a neutral
    detergent in lukewarm water.
    n If hot water (50°C or more) is used, it may
    be deformed.
    3. After washing with water, dry well in
    the shade.
    n Do not expose the air filter to direct
    sunlight or heat from a fire when drying it.

    SCO
    U RIN
    CLB
    ARGE

    4. Install the air filter.

    Owner’s Manual 7



  • Page 8

    Maintenance and Service

    When the air conditioner is not going to be used for a long time.
    When it is not going to be used for
    a long time.

    When the air conditioner is used again.

    Operate the air conditioner at the
    following settings for 2 to 3 hours.
    • Type of operation: Fan operation mode.
    • This will dry out the internal mechanisms.

    Turn off the breaker.

    Clean the air filter and install it in the
    indoor unit.
    (Refer to page 9 for cleaning it.)

    Check that the air inlet and outlet of the
    indoor/outdoor unit are not blocked.

    CAUTION
    Turn off the breaker when the air conditioner
    is not going to be used for a long time.
    Dirt may collect and may cause a fire.

    Check that the ground wire is
    connected correctly. It may be
    connected to the indoor unit side.

    Helpful information
    The air filters and your electiric bill.
    If the air filters become clogged with dust, the
    cooling capacity will drop, and 6% of the electricity
    used to operate the air conditioner will be wasted.

    Operation Tips
    Do not overcool the room.

    8

    Keep blinds or curtains
    closed.

    Keep the room temperature
    uniform.

    This is not good for the health
    and wastes electricity.

    Do not let direct sunshine
    enter the room when the air
    conditioner is in operation.

    Adjust the vertical and
    horizontal airflow direction to
    ensure a uniform temperature
    in the room.

    Make sure that the doors
    and windows are shut tight.

    Clean the air filter regularly.

    Ventilate the room
    occasionally.

    Avoid opening doors and
    windows as much as possible
    to keep the cool air in the
    room.

    Blockages in the air filter
    reduce the airflow and lower
    cooling and dehumidifying
    effects. Clean at least once
    every two weeks.

    Indoor Unit

    Since windows are kept
    closed, it is a good idea to
    open them and ventilate the
    room now and then.



  • Page 9

    Maintenance and Service

    ?

    Troubleshooting Tips! Save time and money!
    Check the following points before requesting repairs or service.... If the malfunction persists,
    please contact your dealer.

    The air conditioner
    does not operate.

    The room has a
    peculiar odor.

    It seems that
    condensation is
    leaking from the air
    conditioner.

    Air conditioner does
    not operate for about
    3 minutes when
    restart.

    • Check that this is not
    a damp smell exuded
    by the walls, carpet,
    furniture or cloth
    items in the room.

    • Condensation occurs
    when the airflow from
    the air conditioner
    cools the warm room
    air.

    • This is the protector
    of the mechanism.
    • Wait about three
    minutes and
    operation will begin.

    Does not cool or heat
    effectively.

    The air conditioner
    operation is noisy.

    Crack sound is
    heard.

    • Is the air filter dirty?
    See air filter cleaning
    instructions.
    • The room may have
    been very hot when
    the room air
    conditioner was first
    turned on. Allow time
    for it to cool down.
    • Has the temperature
    been set incorrectly?
    • Are the indoor unit's
    air inlet or outlet vents
    obstructed?

    • For a noise that
    sounds like water
    flowing.
    -This is the sound of
    freon flowing inside
    the air conditioner
    unit.
    • For a noise that
    sounds like the
    compressed air
    releasing into
    atmosphere.
    -This is the sound of
    the dehumidifying
    water being
    processed inside the
    air conditioning unit.

    • This sound is generated
    by the expansion/
    constriction of the front
    panel, etc. due to
    changes of
    temperature.

    • Have you made a
    mistake in timer
    operation?
    • Has the fuse blown
    or has the circuit
    breaker been
    tripped?

    Remote control
    display is faint, or no
    display at all.

    • Are the batteries
    depleted?
    • Are the batteries
    inserted in the
    opposite (+) and (-)
    directions? 

    Filter sign lamp
    (LED) is ON.

    • Cleaning the filter,
    press the Timer button
    and ◀ button of wired
    remote controller at
    the same time for 3
    sec.

    NOTICE
    WATER RESISTANT: The outdoor side of this appliance is WATER RESISTANT.
    The indoor side is not water resistant and should not be exposed to
    excess water.

    Owner’s Manual 9

    ENGLISH

    Before you call for service...



  • Page 10

    10

    Indoor Unit



  • Page 11

    [Representative] LG Electronics Inc. EU Representative
    Krijgsman 1, 1186 DM Amstelveen, The Netherlands
    [Manufacturer] LG Electronics Inc. Changwon 2nd factory
    84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA






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