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OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
P/NO : MFL67163901
TYPE : 4-WAY CEILING CASSETTE
The equipment complies with requirements of the Technical
Regulation, in terms of restrictions for the use of certain dangerous
substances in electrical and electronic equipment.
www.lg.com
ENGLISH
ITALIANO
ESPAÑOL FRANÇAIS
DEUTSCH
ΕΛΛΗΝΙΚΆ
PORTUGUÊS
DUTCH
1

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Inhalt der Seiten


  • Page 1

    AIR CONDITIONER
    Please read this manual carefully before operating
    your set and retain it for future reference.
    TYPE : 4-WAY CEILING CASSETTE

    www.lg.com
    P/NO : MFL67163901

    DUTCH

    The equipment complies with requirements of the Technical
    Regulation, in terms of restrictions for the use of certain dangerous
    substances in electrical and electronic equipment.

    ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ΕΛΛΗΝΙΚΆ PORTUGUÊS

    OWNER’S MANUAL



  • Page 2

    Ceiling Cassette- Type Air Conditioner Owner’s Manual

    TABLE OF CONTENTS
    A. Safety Precautions......................................3
    B. Product Introduction...................................6
    Name and function of parts ...........................6
    What to do before operation ..........................6
    Operation Indication Lamps...........................6
    Wired Remote Controller ...............................7
    Wireless Remote Controller (Accessory).......8
    Standard Operation - Standard Cooling ........9
    C. Operating instructions................................9
    Standard Operation - Heating Mode............10
    Standard Operation - Power Cooling...........10
    Standard Operation Dehumidification Mode ................................11
    Auto Changeover Mode...............................11
    Standard Operation - Fan Mode..................12
    Standard Operation - Auto
    Operation Mode...........................................13
    Standard Operation - Airflow Setting ...........14
    Standard Operation - Temperature
    Setting/Room Temperature Check ..............15
    Sub function - Plasma Purification...............16
    Function setting - Child Lock .......................17
    Function Setting - Change Temp.................18
    Function setting - Elevation Grill..................19
    Function setting - Filter Sign Clear ..............20
    Function setting - Vane Angle Control.........21
    Function setting - Changing Current Time..22
    Programming - Simple Reservation.............24
    Programming : Weekly Reservation ............25
    Programming - Sleep Reservation ..............27
    Programming - ON Reservation ..................28
    Programming - OFF Reservation ................30
    Programming : Holiday Reservation............32
    Ventilation Kit Control(Optional) ..................33
    D. Maintenance and Service .........................34
    Indoor Unit ...................................................34
    Purifying filter(Optional) ...............................35
    Operation Tips! ............................................36
    When the air conditioner is not going.... ......36
    Troubleshooting Tips! Save time and
    money!.........................................................37
    Call the service immediately in the following
    situations .....................................................37

    2 Ceiling Cassette-Type Air Conditioner

    FOR YOUR RECORDS
    Write the model and serial numbers here:
    Model #
    Serial #
    You can find them on a label on the side of each unit.
    Dealer's Name
    Date Purchased
    ■ Staple your receipt to this page in the event you need it
    to prove date of purchase or for warranty issues.

    READ THIS MANUAL
    Inside you will find many helpful hints on how to use and
    maintain your air conditioner properly. Just a little
    preventive care on your part can save you a great deal
    of time and money over the life of your air conditioner.
    You'll find many answers to common problems in the
    chart of troubleshooting tips. If you review our chart of
    Troubleshooting Tips first, you may not need to call for
    service at all.

    PRECAUTION
    • Contact the authorized service technician for repair or
    maintenance of this unit.
    • Contact the installer for installation of this unit.
    • The air conditioner is not intended for use by young
    children or invalids without supervision.
    • Young children should be supervised to ensure that
    they do not play with the air conditioner.
    • When the power cord is to be replaced, replacement
    work shall be performed by authorized personnel only
    using only genuine replacement parts.
    • Installation work must be performed in accordance
    with the National Electric Code by qualified and
    authorized personnel only.



  • Page 3

    Safety Precautions

    Safety Precautions

    WARNING

    This symbol indicates the possibility of death or serious injury.

    CAUTION

    This symbol indicates the possibility of injury or damage.

    WARNING
    Always ground the product.

    • There is a risk of electric shock.
    For electrical work, contact the dealer, seller,
    a qualified electrician, or an Authorized
    Service Center. Do not disassemble or repair
    the product by yourself.
    • There is risk of fire or electric shock.

    Use the correctly rated breaker or fuse.

    • There is risk of fire or electric shock.

    Do not install the product on a defective
    installation stand. Be sure that the
    installation area does not deteriorate with
    age.
    • It may cause product to fall.

    Be sure to check the refrigerant to the
    used. Please read the label on the product.

    Do not use a defective or underrated
    circuit breaker. Use the correctly rated
    breaker and fuse.
    • There is risk of fire or electric shock .
    Always ground the product as per the
    wiring diagram. Do not connect the
    ground wire to gas or water pipes
    lightening rod or telephone ground wire.
    • There is risk of fire or electric shock.

    Do not modify or extend the power cable.
    If the power cable or cord has scrathes or
    skin peeled off or deteriorated then it
    must be replaced.
    • There is risk of fire or electric shock.

    Never install the outdoor unit on a
    moving base or a place from where it
    can fall down.
    • The falling outdoor unit can cause damage or
    injury or even death of a person.
    Don't use a power cord, a plug or a loose
    socket which is damaged.

    • Incorrect refrigerant used can prevent the
    normal operation of the unit.

    • Otherwise it may cause a fire or electrical
    shock.

    Do not place a heater or other heating
    appliances near the power cable.

    Do not allow water to run into electric
    parts. Install the unit away from water
    sources.

    • There is risk of fire and electric shock.

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

    Do not use a multi consent. Always use
    this appliance on a dedicated cicuit and
    breaker.
    • Otherwise it can cause electric shock or fire.
    Install the panel and the cover of control
    box securely.

    • There is risk of fire or electric shock due to
    dust , water etc.
    For installation, removal or reinstall ,
    always contact the dealer or an
    Authorized Service Center.
    • There is risk of fire, electric shock, explosion,
    or injury.
    When the product is soaked (flooded or
    submerged) in water , contact an
    Authorized Service Center for repair
    before using it again.
    • There is risk of fire or eletric shock.

    Do not touch , operate, or repair the
    product with wet hands. Hold the plug by
    hand when taking out
    • There is risk of electric shock or fire.

    Do not store or use or even allow
    flammable gas or combustibles near the
    product.
    • There is risk of fire.

    Owner's Manual 3

    ENGLISH

    To prevent injury to the user or other people and property damage, the following instructions must be followed.
    ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by
    the following indications.



  • Page 4

    Safety Precautions
    Indoor/outdoor wiring connections must
    be secured tightly and the cable should
    be routed properly so that there is no
    force pulling the cable from the
    connection terminals.

    Safely dispose off the packing materials.
    Like screws, nails, batteries, broken
    things etc after installation or svc and
    then tear away and thraw away the plastic
    packaging bags.

    Make sure to check that the power cable
    plug is not dirty, loose or broken and
    then only insert the plug completely.

    • Improper or loose connections can cause
    heat generation or fire.

    • Children may play with them and cause
    injury.

    • Dirty, loose or broken power plug can
    cause electric shock or fire.

    In outdoor unit the step-up capacitor
    supplies high voltage electricity to the
    electrical components. Be sure to
    discharge the capacitor completely
    before conducting the repair work.

    When installing the unit, use the
    installation kit provided with the product.

    Be sure to use only those parts which
    are listed in the svc parts list. Never
    attempt to modify the equipment.

    • An charged capacitor can cause electrical
    shock.

    • Otherwise the unit may fall and cause severe
    injury.

    • The use of inappropriate parts can cause an
    electrical shock, excessive heat generation or
    fire.

    Do not open the front grille of the product
    during operation. (Do not touch the
    electrostatic filter, if the unit is so equipped.)

    If strange sounds, smell or smoke comes
    from product.Immediately turn the breaker
    off or disconnect the power supply cable.

    Do not use the product in a tightly closed
    space for a long time. Perform ventilation
    regularly.
    • Oxygen deficiency could occur and hence
    harm your health.

    • There is risk of physical injury, electric shock,
    or product failure.

    • There is risk of electric shock or fire.

    Ventilate the product room from time to
    time when operating it together with a
    stove, or heating element etc.

    Turn the main power off and unplug the
    unit when cleaning or repairing the
    product.

    When the product is not to be used for a
    long time, disconnect the power supply
    plug or turn off the breaker.

    • Oxygen deficiency can occur and hence harm
    your health.
    Take care to ensure that nobody
    especially kids could step on or fall onto
    the outdoor unit.
    • This could result in personal injury and
    product damage.

    • There is risk of 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 plug or unplug the power supply plug to turn the unit
    ON/OFF .

    • There is risk of product damage or failure, or
    unintended operation.
    Do not place ANYTHING on the power
    cable.
    • There is risk of fire or electric shock.

    When flammable gas leaks, turn off the gas and open a window
    for ventilation before turn the product on.
    • Do not use the telephone or turn switches on or off. There is risk of
    explosion or fire.

    • There is risk of fire or electric shock.

    CAUTION
    Two or more people must lift and
    transport the product.
    • Avoid personal injury.
    Keep level even when installing the
    product.
    • To avoid vibration or noise.

    Do not install the product where it will be
    exposed to sea wind (salt spray) directly.
    • It may cause corrosion on the product.
    Do not install the product where the noise
    or hot air from the outdoor unit could
    damage or disturb the neighborhoods.
    • It may cause a problem for your neighbors
    and hence dispute.

    4 Ceiling Cassette-Type Air Conditioner

    Install the drain hose to ensure that the
    condensed water is drained away properly.
    • A bad connection may cause water leakage.
    Always check for gas (refrigerant)
    leakage after installation or repair of
    product.
    • Low refrigerant levels may cause failure of
    product.



  • Page 5

    Safety Precautions
    Do not use the product for special purposes,
    such as preserving foods, works of art, etc. It
    is a consumer air conditioner, not a precision
    refrigeration system.

    Do not touch the metal parts of the
    product when removing the air filter.
    • There is risk of personal injury.

    Do not insert hands or other objects
    through the air inlet or outlet while the
    product is operating.
    • There are sharp and moving parts that could
    cause personal injury.
    Do not tilt the unit when removing or
    uninstalling it.
    • The condensed water inside can spill .

    Dismantling the unit, treatment of the
    refrigerant oil and eventual parts should
    be done in accordance with local and
    national standards.

    • 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.
    Be cautious when unpacking and
    installing the product.
    • Sharp edges could cause injury.

    Do not mix air or gas other than the
    specified refrigerant used in the system .

    Use a soft cloth to clean. Do not use
    harsh detergents, solvents or splashing
    water etc .
    • There is risk of fire, electric shock, or damage
    to the plastic parts of the product.
    Always insert the filter securely after
    cleaning. Clean the filter every two weeks
    or more often if necessary.
    • A dirty filter reduces the efficiency.

    If the refrigerant gas leaks during the
    repair, do not touch the leakaing
    refrigerant gas.
    • The refrigernat gas can cause frostbite (cold
    burn)
    If the refrigerant gas leaks during the
    installation, ventilate the area immediately.

    • If air enters the refrigerant system, an
    excessively high pressure results, causing
    equipment damage or injury.

    • Otherwise it can be harmfull for your health.

    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.

    Do not recharge or disassemble the
    batteries. Do not dispose off batteries in
    a fire.

    • There is risk of fire or product failure.

    • They may burn or explode.

    If the liquid from the batteries gets onto
    your skin or clothes, wash it well with
    clean water. Do not use the remote if the
    batteries have leaked.

    If you eat the liquid from the batteries,
    brush your teeth and see doctor.
    Do not use the remote if the batteries
    have leaked.

    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.

    • The chemicals in batteries could cause burns
    or other health hazards.

    • The chemicals in batteries could cause
    burns or other health hazard.

    • Moisture may condense and wet or damage
    furniture.

    Do not expose your skin or kids or
    plants to the cool or hot air draft.
    • This could harm to your health.

    Do not drink the water drained from the
    product.
    • It is not sanitary and could cause serious
    health issues.

    Use a firm stool or ladder when cleaning,
    maintaining or repairing the product at
    an height.
    • Be careful and avoid personal injury.

    Owner's Manual 5

    ENGLISH

    • There is risk of damage or loss of property.

    Do not block the inlet or outlet of air flow.



  • Page 6

    Product Introduction

    Product Introduction
    Name and function of parts
    6 7

    1: Indoor unit
    2: Outdoor unit
    3: Remote controller
    4: Inlet air
    5: Discharge air
    6: Refrigerant piping, connection
    electric wire
    7: Drain pipe
    8: Ground wire
    Wire to ground outdoor unit to
    prevent electrical shocks.

    2
    1

    5

    44

    3

    8

    What to do before operation
    Pair system or simultaneous operation system
    If your installation has a customized
    control system, ask your LG dealer for
    the operation that corresponds to your
    system.
    1: Unit with remote controller
    2: Unit without remote controller (when
    used as simultaneous operation)

    Multi system

    Operation Indication Lamps



    On/Off

    : Lights up during the system operation.

    Filter Sign

    : Lights up after 2400 hours from the time of first operating unit.

    Timer

    : Lights up during Timer operation.

    Defrost Mode

    : Lights up during Defrost Mode or Hot Start operation.(Heat pump model only)

    Forced

    : To operate the unit when the remote control can't be used
    for any reason.

    6 Ceiling Cassette-Type Air Conditioner



  • Page 7

    Product Introduction

    Wired Remote Controller

    10
    9
    8
    7
    11
    12
    13

    2
    3
    4
    5
    6

    14
    15

    Please attach the inform label inside of the door.
    Please choose proper language depend on your
    country.

    13 ROOM TEMPERATURE BUTTON
    14 SETTING/CANCEL BUTTON
    15 EXIT BUTTON

    ❊ Some functions may not be operated and displayed depending on the product type.
    NOTE
    ❈ Display temperature can be different from actual room temperature if the remote controller is installed at the
    place where sun-rays are falling directly or the place nearby heat source.
    ❈ The actual product can be different from above contents depending upon model type.
    ❈ When using simultaneous operation system, whenever press remote controller button, system will approximately
    operate after 1~2 minutes.

    Owner's Manual 7

    ENGLISH

    1

    1 OPERATION INDICATION
    SCREEN
    2 SET TEMPERATURE BUTTON
    3 FAN SPEED BUTTON
    4 ON/OFF BUTTON
    5 OPRATION MODE SELECTION
    BUTTON
    6 WIRELESS REMOTE
    CONTROLLER RECEIVER
    • Some products don't receive the
    wireless signals.
    7 AIR FLOW BUTTON
    8 SUBFUNCTION BUTTON
    9 FUNCTION SETTING BUTTON
    10 VENTILATION BUTTON
    11 RESERVATION
    12 UP,DOWN,LEFT,RIGHT BUTTON
    • To check the indoor temperature,
    press
    button.



  • Page 8

    Product Introduction

    Wireless Remote Controller (Accessory)
    This air-conditioner is equipped with wired remote controller basically. But if you want to be available with
    wireless remote controller, you pay for it.

    PQWRHQ0FDB

    CAUTION:of handling the Remote Controller
    • Aim at the signal receiver on the wired remote controller so as to operate.
    • The remote control signal can be received at a distance of up to about 7m.
    • Be sure that there are no obstructions between the remote controller and the signal receptor.
    • Do not drop or throw the remote controller.
    • Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or
    any other heat source.
    • Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal
    operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)
    NOTE
    h The wireless remote controller do not operate the vane angle control.(4Way Type)
    h For more details refer to the Wireless Remote Control Accessory manual.
    h The actual product can be different from above contents depending upon model type.
    h The wireless remote controller does not operate When using simultaneous operation system.

    8 Ceiling Cassette-Type Air Conditioner



  • Page 9

    Operating Instructions

    Operating instructions
    Standard Operation - Standard Cooling

    1 Press
    indoor.

    button to turn on the

    button to select
    2 Press
    Cooling operation mode.

    the desired temperature
    3 Adjust
    by pressing
    buttons.
    Press
    button to check the
    Room temperature.
    When setting the desired
    temperature higher than room
    temperature, only ventilation
    wind is blow out instead of
    cooling wind.

    ❈ Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)

    Owner's Manual 9

    ENGLISH

    It cools the room by comfortable and clean wind.



  • Page 10

    Operating Instructions

    Standard Operation - Power Cooling
    It makes the room cool using pleasant and fresh air quickly

    1 Press
    indoor.

    button to trun on the

    button to select
    2 Press
    cooling operation mode.

    button continuously
    3 Press
    until 'Po' displayed.

    What is Power Cooling?
    • Desired temperature: Po (actually 18°C)
    • Wind flow: power wind
    • Wind direction: fix to air-cooling position

    }

    It make room temperature
    drop fast by running

    ❈ Partial product has no power air-cooling function.

    Standard Operation - Heating Mode
    It supplies warm wind to the indoor

    1 Press
    indoor.

    button to turn on the

    button to select
    2 Press
    Heating mode.
    (To check the indoor temperature,
    press the room temperature button.)
    the desired temperature
    3 Adjust
    by pressing
    buttons.
    When setting the desired
    temperature lower than room
    temperature, there is only
    ventilation wind.

    • Heating drive only operates at the cooling and heating model.
    • Heating doesn't operate at cooling exclusive model.
    10 Ceiling Cassette-Type Air Conditioner



  • Page 11

    Operating Instructions

    Standard Operation - Dehumidification Mode
    It removes humidity while air-cooling weakly.
    button to turn on the

    button to select
    2 Press
    Dehumidification mode.
    The temperature setting can not be
    adjusted during operation this mode.
    the
    button to select
    3 Press
    airflow rate feeble → weak →

    medium → strong → automatic.
    (The initial wind powerfulness of
    humidity removal drive is 'weak'.)

    • In rainy season or high humidity climate, it is possible to operate simultaneously dehumidifier and
    cooling mode to remove humidity effectively.

    • The menu item of wind powerfulness might not be partially selected according to the product.

    Auto Changeover Mode

    1 Press

    button to turn on the indoor.

    2 Press

    button to select Auto Changeover Mode.

    setting temperature as the right side picture can be set in both
    3 The
    cooling/ heating model.
    ❖ Setting Temp Range : 18˚C~30˚C.

    Owner's Manual 11

    ENGLISH

    1 Press
    indoor.



  • Page 12

    Operating Instructions

    Standard Operation - Fan Mode
    It blows the air as it is in the indoor, not the cold wind.

    1 Press
    indoor.

    button to turn on the

    2 Press
    Mode.

    button to select Fan

    time pressing
    button, you
    3 Every
    can select wind flow in order of
    feeble → weak → medium → strong
    → automatic.
    When running ventilation,
    compressor of AHU doesn't work.

    • Ventilation drive does not release cool wind but general fan
    • Because it releases the wind that has no temperature difference from the room, it functions to
    circulate the inside air.

    • The menu item of wind powerfulness might not be partially selected according to the product.

    12 Ceiling Cassette-Type Air Conditioner



  • Page 13

    Operating Instructions

    Standard Operation - Auto Operation Mode
    button to turn on the

    ENGLISH

    1 Press
    indoor.

    button to select
    2 Press
    Artificial intelligence Mode.

    can adjust
    3 You
    the temperature
    as the picture on
    the right for
    cooling and
    heating model.
    the case of
    4 For
    cooling exclusive,
    as the picture on
    the right, you can
    adjust the
    temperature from
    hot to cold, from
    "-2" to "2" based
    on "00".

    When cold
    When cool
    When appropriate
    When warm
    When hot

    During operating Auto Operation mode:
    • We can use the FAN SPEED button
    • We can change manually to other operation mode.

    Owner's Manual 13



  • Page 14

    Operating Instructions

    Standard Operation - Airflow Setting
    Wind powerfulness : You can simply adjust
    desired wind powerfulness.
    setup desired wind
    1 Please
    powerfulness by wind powerfulness
    button.
    • Every time you press wind
    powerfulness, you can select the wind flow in
    order of ‘feeble → weak → weak medium →
    medium → medium strong → strong → power
    → automatic’.
    • The menu item might not be partially
    selected according to product function.
    • Please refer to product manual for product’s
    detailed function.

    Wind direction : You can simply adjust desired
    wind direction.
    set desired wind direction
    1 Please
    by pressing
    button.
    You can select wind direction of
    (comfortable wind → Up/Down and
    Right/Left → Right/Left →
    Up/Down) by pressing
    button.
    Partial item of wind directions might not be
    selected according to product function.
    Please refer to product manual for product’s
    detailed function.

    14 Ceiling Cassette-Type Air Conditioner



  • Page 15

    Operating Instructions

    Standard Operation - Temperature Setting/Room Temperature Check
    Temperature Setting

    • Press the
    buttons to adjust the
    desired temperature.
    : Increase 1˚C or 2˚F per one time
    pressing
    : Decrease 1˚C or 2˚F per one time
    pressing
    • Room temp: Indicate the current room
    temperature.
    • Set temp: Indicate the temperature that user
    want to set.
    ❈ Depend on what kind of controller, the desired
    temperature can be adjusted at 0.5˚C or 1˚F.
    Cooling operation:
    - The cooling mode doesn't work if
    desired temperature is higher than room
    temperature Please lower the desired
    temperature.
    Heating operation:
    - The heating mode doesn't work if desired
    temperature is lower than room
    temperature Please increase the desired
    temperature.

    Room Temperature Check
    press
    button, the room
    1 Whenever
    temperature will be displayed within 5
    seconds.
    After 5 seconds, it turns to display the
    desired temperature.
    Because of location of remote controller,
    the real room temperature and the this
    displayed value can be different
    • For air-cooling drive, from 18°C to 30°C, and for heating drive, from 16°C to 30°C, you can select
    desired temperature.
    • 5°C is proper for the difference between room and outside temperature.

    Owner's Manual 15

    ENGLISH

    can simply adjust the desired
    1 We
    temperature.



  • Page 16

    Operating Instructions

    Sub function - Plasma Purification
    Only products with humidifying function can use this.

    The method to setup cleaning air
    pressing
    1 Repeat
    until
    icon flash.

    button

    or cancel Plasma
    2 Operate
    Purification function by pressing
    button.
    ( icon appears/disappears on
    display part up
    to selection )
    setting, press
    3 After
    to exit.

    button

    ❈ After setup, it automatically gets out of setup
    mode if there is no button input for 25 seconds.
    ❈ When exiting without pressing set button, the
    manipulated value is not reflected.

    • Cleaning air function is additional function and it might not be indicated or operated at the partial
    product.
    • Cleaning air function is possible only when product is running.
    • If you want independent cleaning air drive, please setup cleaning air by pressing additional drive
    button at ventilation drive.

    16 Ceiling Cassette-Type Air Conditioner



  • Page 17

    Operating Instructions

    Function setting - Child Lock
    It is the function to use preventing children or others from careless using.

    moving to 'setup' icon area by
    2 Ifusing
    button, 'setup' icon
    blinks, and child lock function is
    setup if pressing
    button at
    that time.
    cancelling lock function, if moving
    3 When
    to 'cancel' icon by pressing
    button
    and then, pressing
    button, child lock
    function is cancelled.
    button to exit.
    4 Press
    ❈ After setup, it automatically gets out of
    setup mode if there is no button input
    for 25 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.

    Owner's Manual 17

    ENGLISH

    button repeatedly until
    1 Press
    the
    is flashing.



  • Page 18

    Operating Instructions

    Function Setting - Change Temp
    Change temperature is the function to setup air-cooling and heating drive automatically changeable
    according to the temperature at artificial intelligence drive mode.

    1 Repeaticonpressing
    flash.

    button until

    button to change.
    2 Press
    ❈ Converting temp value : 1~7

    button to complete
    3 Press
    and active the setting process.

    button to exit or
    4 Press
    system will automatically release
    without any input after 25
    seconds.
    ❈ When exiting without pressing
    set button, the manipulated
    value is not reflected.

    18 Ceiling Cassette-Type Air Conditioner



  • Page 19

    Operating Instructions

    Function setting - Elevation Grill
    This function is to move the indoor filter up/down for cleaning filter.

    button until

    icon flash.
    to descent using
    button
    2 Move
    and press
    button will display
    descent icon and the up/down grill will
    descent.
    up/down grill descents to the
    3 When
    desired position, move to stop icon
    suing
    button and press
    to stop up/down grill.

    button

    filter cleaning is finished, fix the
    4 When
    filter to the up/down grill, move to ascent
    icon using
    button, and press
    button to ascent up/down grill.
    button to exit.
    5 Press
    ❈ After setup, it automatically
    gets out of setup mode if there
    is no button input for 60
    seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.

    • Elevation grill function only operates in the indoor unit with the elevation grill.

    Owner's Manual 19

    ENGLISH

    button
    1 Press
    Repeat pressing



  • Page 20

    Operating Instructions

    Function setting - Filter Sign Clear
    This function is to clear the indicator of indoor filter cleaning.

    1 Press
    until the

    button repeatedly
    is flashing.

    the
    is flashing, press
    2 When
    the
    to clear this display

    • When filter is covered by dust, it will reduce cooling/heating efficiency and accumulate more
    electric power. Therefore. do clean the filter whenever cleaning time is expired.
    ❈ Filter cleaning indication is automatically cancelled without the separate cancellation after certain
    period of time.

    20 Ceiling Cassette-Type Air Conditioner



  • Page 21

    Operating Instructions

    Function setting - Vane Angle Control
    This function is to adjust angle at which airflow is blow out.
    button until

    button to select active vane :
    2 Press
    1 / 2 / 3 / 4 / All / Standard
    Select Vane number using
    buttons.
    ❈ Vane number : No. 1, 2., 3, 4, all, or
    standard
    - Selected vane is in operation.
    - Please verify the operating vane.
    - To set the angle of all the vanes,
    select 'all'.
    - To set as the factory default settings,
    select 'standard'.
    wind angle using
    3 Select
    press
    button.

    button, and

    - The boundary of wind angle settings can
    be changed to 5 levels or 6 levels
    according to the product.
    - When selecting 'standard' for Vane
    number, the wind angle does not move.
    the wind angles for the remaining
    4 Set
    vanes as the same as above.
    ❈ There are products with vanes with
    no. 1 and no. 2 only according to the
    product types.
    Press

    button to exit.

    setup, it automatically
    5 ❈ After
    gets out of setup mode if there
    is no button input for 60 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.
    button to complete and
    6 Press
    active the setting process.
    (Airflow direction function will be
    released whenever setting vane angle)
    button to exit or
    7 Press
    system will automatically release
    without any input after 25
    seconds.

    Owner's Manual 21

    ENGLISH

    pressing
    1 Repeat
    icon flash.



  • Page 22

    Operating Instructions

    Function setting - Changing Current Time
    press function setup
    1 Please
    button. If pressing function setup
    button repeatedly, it moves to
    time setup menu. ‘Time setup’
    icon is indicated at that time and date
    blinks at current time indication area.
    Ex) Changing Current Time as
    'Monday / AM 10:20'.

    2 Press
    day.

    key to adjust the current

    key to move to AM/ PM setting
    3 Press
    mode (the 'AM/ PM segment will flash).

    AM/ PM value by
    4 Setting
    pressing
    button.

    button to move to 'Hour'
    5 Press
    setting mode. (the 'Hour' segment will
    flash)

    Hour value by pressing
    6 Setting
    button.

    22 Ceiling Cassette-Type Air Conditioner



  • Page 23

    Operating Instructions

    button to move to 'Minute'
    7 Press
    setting mode. (the 'Minute' segment will

    ENGLISH

    flash)

    Minute value by pressing
    8 Setting
    button.

    9 Press
    10

    button to finish.

    In the process, press
    button to release and exit
    from setting mode.
    (In case of exit with
    incomplete information, it will return to
    the previous setting)
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.

    Owner's Manual 23



  • Page 24

    Operating Instructions

    Programming - Simple Reservation
    You can set the reservation conveniently in the units of 1 hour from 1 hour to 7 hours.
    button to enter the
    1 Press
    Programming mode.
    (the

    segment flashing)

    Ex) Setting Simple Reservation
    time as '3'.

    2 Press
    time.

    3 Press

    button to adjust reservation

    button to finish setting.

    button to exit.
    4 Press
    ❈ After setup, it automatically gets out of
    setup mode if there is no button input
    for 25 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.

    ❈ When simple reservation setup, product automatically runs or stops after the time that is set.

    24 Ceiling Cassette-Type Air Conditioner



  • Page 25

    Operating Instructions

    Programming : Weekly Reservation
    You can set the daily reservation in weekly unit.
    Weekly reservation keeps operating until before you cancel it once you setup
    Please move to reservation setup mode by pressing reservation button.
    ❈ You can setup two weekly reservations for one day, and up to fourteen
    reservations for a week.
    For example, to setup (Tuesday morning 11:30 turned on ~ afternoon 12:30
    turned off), you setup in order below.

    move to 'weekly' by
    2 Please
    repeatedly pressing reservation
    button. 'Weekly' blinks at this time.
    select weekly reservation or
    3 Please
    weekly reservation ¡ by using
    button.
    ❈ You can setup two reservations,
    weekly reservation 1 and weekly
    reservation 2, for a day.
    move to 'date' setup part by
    4 Please
    using
    button. If 'date'
    indication blinks, please setup date.
    You can setup date from Monday to
    Sunday.
    move to 'AM/PM' setup part
    5 Please
    of turning on by using
    button.

    move to 'hour' setup part of
    6 Please
    turning on by using
    button.
    - It is the part to setup the time at
    which air-conditioner is turned on.

    change time by using
    button.
    7 Please
    - You can setup hour 0~12.
    8 Please move to 'minute' setup part of turning on by using
    9 If 'minute' indication blinks, please setup 'minute' by using

    button.
    button

    Owner's Manual 25

    ENGLISH

    1



  • Page 26

    Operating Instructions
    move to 'AM/PM' setup part
    10 Please
    of turning off by using
    button.
    - AM/PM setup is identical with
    turning on time setup.

    11

    Please move to 'hour' setup part
    of turning off by using Right
    button.
    - It is the part to reserve the time
    at which air-conditioner is
    turned off.
    - If 'hour' indication blinks, please
    setup 'hour'.
    ❈ Please setup 'hour' and 'minute'
    identically with the method to
    setup turning on time.

    finishing weekly reservation setup, please press setup/cancellation button.
    12 IfWeekly
    reservation setup for the day that you set is finished.
    you setup with the method identical with above by selecting the day that
    13 Ifyou'd
    like to setup, it operates weekly reservation.
    If you setup both turning on reservation time and turning off reservation time
    identically, it doesn't operate reservation drive.
    Weekly reservation explanation

    Reservation
    number

    Turning on time

    Turning off time

    Under bar: the indication that there is weekly reservation for
    corresponding day
    ❈ Indoor unit is turned on to desired temperature if it is configured using up/down button during preset of weekly operation time.
    (Temperature selection range : 18℃~30℃)
    - When desired temperature is not set, it is turned on automatically with desired temperature of previous operation.

    26 Ceiling Cassette-Type Air Conditioner



  • Page 27

    Operating Instructions

    Programming - Sleep Reservation

    button to enter the
    1 Press
    Programming mode.
    Ex) Setting Sleep Reservation
    time as '3'.
    pressing
    button to enter the
    2 Repeat
    SLEEP reservation setting mode.
    (

    3 Press
    time.

    segment flashing)
    button to adjust reservation

    The SLEEP reservation time is from 1 to
    7 hours.

    button to finish setting.
    4 Press
    Whenever reservation is done.

    button to exit.
    5 Press
    ❈ After setup, it automatically gets out of
    setup mode if there is no button input
    for 60 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.
    - If reservation is setup, 'sleep'
    indication shows up at the lower part
    of LCD screen.
    finishing sleep reservation setup,
    6 Ifair-conditioner
    product operates sleep
    drive and stops after the time that is set.

    CAUTION
    Please reserve proper time at sleeping. (Too much air-cooling is not good for your health.)
    • Because it automatically adjusts desired temperature for comfortable air-cooling at sleep drive,
    there could be difference between remote controller's desired temperature and air-conditioner
    body's desired temperature.
    • Sleep reservation operates as off reservation for the product whose temperature adjustment isn't
    controlled by unit of 0.5°C.

    Owner's Manual 27

    ENGLISH

    Sleep reservation is the function of air-conditioner to run and stop after certain period of time at sleep
    mode before sleep. When connected to a ventilation product and set the sleep reservation, when it
    goes to the sleep mode, after the set time has elapsed.



  • Page 28

    Operating Instructions

    Programming - ON Reservation
    Automatically turned On at reserved time that you set.

    1 Press

    button.

    Ex) Setting ON Reservation
    Time as 'AM 10:20'.
    pressing
    button to
    2 Repeat
    enter the ON reservation
    setting mode.
    (
    segment flashing)

    3 Press
    setting.

    button to adjust AM/ PM

    button to Hour setting
    4 Press
    mode. When the Hour icon flash, please
    setting time.
    The setting range is within 1~12.

    button to shift to Minute
    5 Press
    setting mode. When the Minute icon
    flash, please setting minute the setting
    range is within 00~59.

    6 Press

    28 Ceiling Cassette-Type Air Conditioner

    button to finish setting.



  • Page 29

    Operating Instructions

    setup mode if there is no button input
    for 25 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.
    - If reservation is set, 'turned on'
    indication shows up at the lower part
    of LCD screen, and air-conditioner
    product runs at the time that is set.
    - If reservation is cancelled, 'turned on'
    indication disappears.

    Owner's Manual 29

    ENGLISH

    button to exit.
    7 Press
    ❈ After setup, it automatically gets out of



  • Page 30

    Operating Instructions

    Programming - OFF Reservation
    Automatically turned Off at reserved time that you set.

    1 Press

    button.

    Ex) Setting OFF Reservation
    Time as 'AM 10:20'.
    pressing
    button
    2 Repeatedly
    to enter the OFF reservation
    setting mode.
    (
    segment flashing)

    3 Press
    setting.

    button to adjust AM/ PM

    button to shift to Hour
    4 Press
    setting mode. When the Hour icon flash,
    please setting time.
    The setting range is within 1~12.

    button to shift to Minute
    5 Press
    setting mode. When the Minute icon
    flash, please setting minute the setting
    range is within 00~59.

    6 Press

    30 Ceiling Cassette-Type Air Conditioner

    button to finish setting.



  • Page 31

    Operating Instructions

    setup mode if there is no button input
    for 25 seconds.
    ❈ When exiting without pressing set
    button, the manipulated value is not
    reflected.
    - If reservation is set, 'turned off'
    indication shows up at the lower part
    of LCD screen, and air-conditioner
    product runs at the time that is set.
    - If reservation is cancelled, 'turned off'
    indication disappears.

    Owner's Manual 31

    ENGLISH

    button to exit.
    7 Press
    ❈ After setup, it automatically gets out of



  • Page 32

    Operating Instructions

    Programming : Holiday Reservation
    It automatically stops at reserved day that you set.
    press
    button.
    1 Please
    It enters into reservation
    setup mode.
    move to 'holiday' by repeatedly
    2 Please
    pressing
    button.

    move to 'date' that
    3 Please
    you want to setup holiday
    by using

    button.

    or cancel holiday by using
    4 Pleaseorappointbutton.
    For example, when you setup
    Monday/Friday to holiday
    - 'Monday', 'Friday' letter disappears.

    press
    5 Please
    holiday setup.

    button if finishing

    ❈ If it comes to appointed holiday,
    air-conditioner automatically stops.
    Once you setup holiday appointment,
    until before you cancel holiday setup,
    air-conditioner automatically stops
    within one hour even though you run
    air-conditioner.

    32 Ceiling Cassette-Type Air Conditioner



  • Page 33

    Operating Instructions

    Ventilation Kit Control(Optional)

    Ventilation interlinked operation
    button on the remote
    1 Press
    controller control panel.
    - It is only used when air conditioner
    and general ventilation is
    interlinked.

    'Start/Stop' button at ventilation
    2 Pressing
    mode will start ventilation.
    button will change the
    3 Pressing
    ventilation operation mode.
    Pressing operation selection button
    will change the mode in the order of
    'Heat exchange → normal → automatic'
    ❈ It only displays on the remote controller
    display when it is in ventilation mode, and it
    displays the desired temperature when it
    returns to air condition mode.
    button in general
    4 Pressing
    ventilation mode will change airflow
    speed.
    Pressing airflow speed button will
    change the mode in the order of 'weak →
    strong → extra strong'.
    If CO2 sensor is installed, it can select from
    'weak → strong → very strong → automatic'.
    back to air conditioner mode
    5 Changing
    1)Automatic Conversion : when no button is
    pressed for 15 seconds or longer, it
    automatically converts back to air
    conditioner mode.
    2) Manual Conversion : Pressing
    button
    in ventilation mode will manually convert.

    Owner's Manual 33

    ENGLISH

    It is used when air conditioner is interlinked with ventilation product.
    It is a function that cools and refreshes indoor air using the ventilation product at the same time
    operating the air conditioning function.



  • Page 34

    Maintenance and Service

    Maintenance and Service
    Indoor Unit

    NOTE
    Supply power 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.

    1

    Remove the Air filters.
    ■ 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.

    ■ Never use any of the followings:
    • Water hotter than 40°C.
    Could cause deformation and or discoloration.
    • Volatile substances.
    Could damage the
    surfaces of the air
    conditioner.
    SI

    Be

    n zene

    N NER

    2

    Clean dirt from the air filter using a vacuum
    cleaner or washing with water.
    ■ If dirt is conspicuous, wash with a neutral
    detergent in lukewarm water.
    ■ If hot water (40°C or more) is used, it may be
    deformed.

    3

    After washing with water, dry well in the
    shade.
    ■ Do not expose the air filter to direct sunlight
    or heat from a fire when drying it.

    4

    Install the air filter.

    SCO
    U RIN G
    C LB
    A R GER

    34 Ceiling Cassette-Type Air Conditioner

    ENGLISH

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



  • Page 35

    Maintenance and Service

    Purifying filter(Optional)
    The PLASMA filter behind the air filters should be
    checked and cleaned once every 3 months or more
    often if necessary.

    1

    After removing the air filters, pull slightly forward to
    remove the PLASMA filter.

    2

    Dip the PLASMA filter into the water mixed with neutral
    detergent, for 20~30 minutes.

    3

    Dry the PLASMA filter in the shade for a day
    (Especially, the humidity must be removed perfectly on
    this parts).

    4

    Note the cuts of electric discharge lines.

    5

    Re-install the PLASMA filter to the original position.

    CAUTION:Don’t touch this
    PLASMA Filter within 10 seconds
    after opening the inlet grille, it
    may cause an electric shock.

    Replacement
    • Recomended use period : About 2 years

    1

    Open front panel and remove air filter.

    2

    Remove air purifying filter.

    3

    Insert new air purifying filter.

    1

    4

    Reinsert air filter and close front panel.

    2

    Owner's Manual 35

    ENGLISH

    Cleaning



  • Page 36

    Maintenance and Service

    Operation Tips!
    Keep blinds or curtains
    closed.

    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.

    Make sure that the doors
    and windows are shut tight.

    Clean the air filter regularly.

    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.

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

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

    When the air conditioner is not going....
    When air conditioner is not going to be used for a long time.
    1 Operate the air conditioner at the following settings for 2 to 3 hours.
    • Type of operation: Fan operation mode.(Refer to page "Fan Mode")
    • This will dry out the internal mechanisms.
    2 Turn off the breaker.

    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.
    3. Remove the batteries from the Remote Controller.

    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.

    When the air conditioner is to be used again.
    1. Clean the air filter and install it in the indoor unit.
    (Refer to page "Maintenance and Service")
    2. Check that the air inlet and outlet of the indoor/outdoor unit are not blocked.
    3. Check that the ground wire is connected correctly. It may be connect to the indoor unit side.

    36 Ceiling Cassette-Type Air Conditioner

    ENGLISH

    Do not overcool the room.



  • Page 37

    Maintenance and Service

    Troubleshooting Tips! Save time and money!
    Case
    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.
    Does not cool or heat effectively.

    The air conditioner operation is
    noisy.

    Crack sound is heard.
    Filter sign lamp (LED) is ON.
    Remote control display is faint, or
    no display at all.
    The error code is occurred after
    lightning struck

    Explanation
    • Have you made a mistake in timer operation?
    • Has the fuse blown or has the circuit breaker been tripped?
    • 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.
    • 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 setting 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/contraction of the inlet grille, etc.
    due to changes of temperature.
    • Cleaning the filter, press the Timer button and ◀ button of wired remote
    controller at the same time for 3 sec.
    • Has the circuit breaker been tripped?
    • Are the batteries inserted in the opposite (+) and
    (-) directions? 
    • This product has been applied to the over current protection circuit.
    Error can occur, but it is normal behavior.
    After few minutes, It will operate normally.

    Call the service immediately in the following situations
    1. Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off.
    Never try to repair by yourself or restart the system in such cases.
    2. Main power cord is too hot or damaged.
    3. Error code is generated by self diagnosis.
    4. Water leaks from indoor unit even if the humidity is low.
    5. Any switch, breaker (safety, earth) or fuse fails to work properly
    User must carry routine checkup & cleaning to avoid unit’s poor performance.
    In case of special situation, the job must be carried out by service person only.

    Owner's Manual 37

    ENGLISH

    Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer.



  • Page 38

    38 Ceiling Cassette-Type Air Conditioner



  • Page 39






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