LG Art Cool PREMIER User manual

OWNER’S MANUAL
ART COOL PREMIER WALL MOUNTED
Art Cool Premier Wall Mounted
3/4 Ton and 1 Ton

DFS-OL-AG-001-US_014C07
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
©LG Electronics U.S.A., Inc.
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials is the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc., only in confidence.
This document is for design purposes only.

INTRODUCTION |3
Introduction
Due to our policy of continuous product innovation, some specications may change without notication.
TABLE OF CONTENTS
SAFETY INSTRUCTIONS ................................................................... 4-6
UNIT PARTS ........................................................................................... 7
UNIT OPERATION............................................................................. 8-11
Single Zone Art Cool Premier
Remote Control
Basic Functions.............................................................................. 12-13
Cooling and Heating Operation
Timer Setting Functionality
Advanced Functions ...................................................................... 14-16
Jet Cool/Heat Operation
Auto Clean Operation
Articial Intelligence
Auto Changeover Operation
Energy Saving Operation
Manual Operation
MAINTENANCE............................................................................... 17-18
TROUBLESHOOTING..................................................................... 19-22
TABLE OF SYMBOLS
This symbol indicates a potentially hazardous situation which, if not avoided, may result in death or serious
injury.
This symbol indicates additional helpful information such as an explanation, a comment, or a clarication
about the subject.
This symbol indicates a recommendation or tip. Recommendations instruct the user to apply the suggested
practice to ensure the best operating results in order to achieve the maximum benet of the product. Tips
contain practical information that may help the user solve a problem or describe actions that may save time.

4|INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Premier
SAFETY INSTRUCTIONS
•Please read this manual completely before operation of the product.
•Follow the instructions in this manual to prevent product malfunction, property damage, injury or death to the user or other people.
Incorrect operation due to ignoring any instructions will cause harm or damage.
•The level of seriousness is classified by the symbols described below.
IMPORTANT!
This symbol indicates a potentially hazardous situation which, if not avoided, may result in death or serious injury.
This symbol indicates a tip or recommendation.
Recommendations instruct the user to apply the suggested practice to ensure the best operating results in order to achieve the
maximum benet of the product.
Tips contain practical information that may help the user solve a problem or describe actions that may save time.
This symbol indicates additional helpful information such as an explanation, a comment, or a clarication about the subject.
General Safety
• Installation and repair must always be done by a qualied technician.
• Installation MUST conform with local building codes or, in the absence
of local codes, with the Nation Electrical Code NFPA 70/ANSI C1-1003
or current edition and Canadian Electrical Code Part1 CSA C.22.1.
Power and Electrical Safety
• Failure to carefully read and follow all instructions in this manual
may result in equipment malfunction, property damage, personal in-
jury and/or death.
• Immediately disconnect the product in the event of a blackout or
thunderstorm. Failure to do so may result in fire, electric shock and/
or damage.
• Always insure proper equipment ground. Failure to do so may result
in electric shock and/or product failure.
• Be sure a circuit breaker is installed before using the air conditioner.
Failure to do so may result in electric shock and/or product failure.
• Do not connect the ground wire to a gas pipe, a lightning rod or a
telephone ground wire; because it may result in electric shock and/
or product failure.
• Use a standard circuit breaker and fuse conforming to the rating of
the air conditioner. Failure to do so may result in electric shock and/
or product failure.
• Do not modify or extend the power cable; because it may result in
electric shock and/or fire. If the power cable shows wear, such as
scratches or outer skin peeling off or deteriorated, then it must be
replaced.
• Do not use a damaged power cord; because it may result in electric
shock and/or fire.
• Do not touch, operate or repair the air conditioner with wet hands.;
because it may result in electric shock or product failure.
• Do not place a heater or other heat generating appliances near the
power cable; because it may result in electric shock and/or fire.
• Check that the power cord is not pulled or damaged while the air
conditioner is operating. Failure to do so may result in electric shock,
electric shock and/or fire.
• Do no place any objects on the power cord; because it may result in
electric shock or product failure.

INTRODUCTION |5
Safety
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Premier
SAFETY INSTRUCTIONS
Installation Safety Instructions
Usage
• Do not install the air conditioners on an unstable surface or where
there is a danger of it falling; because it may result in death, serious
injury, and/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 and/
or product failure.
• Indoor/outdoor wiring connections must be secured tightly and the
cable should be routed properly so that there is no force pulling the
cable from the connection terminals. Improper or loose connections
may cause heat generation or fire.
• Install the panel and the cover of the control box safely. Failure to do
so may result in explosion or fire.
• Do not install the air conditioner near a place with a danger of ex-
plosion or fire; because it may result in explosion or fire which may
result in serious bodily injury or death.
• Ensure that the pipe and the power cable which connect the indoor
unit and the outdoor unit are not pulled tight when installing the air
conditioner. Failure to do so may result in electric shock or product
failure.
• Do not mix air or gas in the system except for the specic refrigerant.
If air enters the refrigerant system, it may result in excessively high
pressure that may lead to personal injury or damage to the equipment.
• Safely dispose of packing materials such as screws, nails or batter-
ies in a packing bag after installation or repair. Failure to do so may
result in serious bodily injury.
• Do not install air conditioner with direct exposure to sea water or sea
wind (salt spray) directly; because it 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.
• Use caution when unpacking or installing the air conditioner. Failure
to do so may result in bodily injury or product failure.
• When lifting or transporting the equipment, there should be 2 or
more people, or a forklift. Failure to do so may result in bodily injury.
• Avoid exposure to leaking refrigerant which may occur during instal-
lation or repair. Failure to do so may result in personal injury and/or
product failure.
• If there is a refrigerant leak during the installation of the air condi-
tioner, ventilate the area immediately. Failure to do so may result in
serious injury and/or product failure.
• Use only those parts which are listed in the service parts list. Never
attempt to modify the equipment; because that may result in death,
serious injury, and/or product failure.
• Discard the batteries in a safe manner and where there is no danger
of excessive heat or fire. Failure to do so may result in explosion or
fire.
• 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.
• Only use components that are approved by the manufacturer and
do not repair or modify them; because it may result in electric shock
and/or product failure.
• Only use the refrigerant specified on the air conditioner label. Failure
to do so may result in explosion or fire.
• Do not allow water to run into the air conditioner; because it may
result in explosion or fire.
• Do not leave flammable substances such as gasoline, benzene and
• other white spirits or solvents, including thinner near the air condi-
tioner; because it may result in explosion or fire and may result in
bodily injury.
• Do not use the air conditioner for an extended period of time in a
small place without ventilation; because it may result in explosion or
fire. Make sure to ventilate the space regularly.
• Do not touch the electrostatic filter after opening the front grill; be-
cause it may result in electric shock or 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; because it may cause product failure, fire, and/or electronic
shock.
• Disconnect power if there is a noise, smell or smoke coming from the
air conditioner. Failure to do so may result in explosion or re.
• Ventilate room or area when air conditioner and a heating appliance
such as a heater are used simultaneously. Failure to do so may re-
sult in fire, serious injury, and/or product failure.
• Make sure that children do not climb up the outdoor unit or impact
it. Failure to do so may result in death, bodily injury and/or product
failure.
• If there is a gas leak, ventilate area sufficiently before using the air
conditioner again. Failure to do so may result in explosion or fire.
• Do not use the product for special purposes, such as preserving
foods, works of art, etc.; because it may result in death, fire and/
or electric shock. The product is a consumer air conditioner, not a
precision refrigeration system.
• Do not block the inlet or outlet of air flow; because it may result in
explosion or product failure.

6|INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Premier
SAFETY INSTRUCTIONS
Usage (Continued)
Maintenance
• Do not insert hands or other objects through the air inlet or outlet
while the air conditioner is operating; because it may result in per-
sonal bodily injury or electric shock.
• Do not expose people, animals or plants to the cold or hot wind from
the air conditioner; because it may result in serious injury.
• Do not drink the water drained from the air conditioner; because it
may result in serious health complications.
• During maintenance, be sure to turn the main power off when clean-
ing or repairing the air conditioner. Failure to do so may result in
death, serious bodily injury, and/or product failure.
• Remove the batteries when the remote control is not in use for an
extended period of time. Failure to do so may result in product failure.
• Filter must be installed before operating the air conditioner. Failure
to do so may result in product failure.
• Do not place any objects on the air conditioner; because it may re-
sult in product failure.
• Follow the standards of the corresponding region or country for han-
dling the refrigerant and the air conditioner, and for disassembling
the air conditioner. Failure to do so may result in product failure.
• Do not mix the batteries for the remote control with other types of
batteries or mix new batteries with used batteries; because it may
result in product failure.
• Do not recharge or disassemble the batteries; because it may result
in explosion, fire or serious bodily injury.
• Do not dispose of the batteries in re; because it may result in explo-
sion or re.
• Stop using the remote control if there is a battery uid leak; and if your
clothes or skin is exposed to the battery uid from a leak, wash it off
with clean water. Failure to do so may result in serious bodily injury.
• 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; because it
may result in product failure.
• Do not use strong cleaning agents or solvents when you clean the
air conditioner, or spray water; because it may result in serious
bodily injury or product failure. Make sure to use a smooth cloth
when cleaning the product.
• Never touch the metal parts of the air conditioner when removing the
air lter; because it may result in serious bodily injury or product failure.
• Use a sturdy stool or ladder when cleaning, maintaining or repairing
the air conditioner at a height. Failure to do so may result in serious
bodily injury or product failure.

INTRODUCTION |7
Unit Parts
Due to our policy of continuous product innovation, some specications may change without notication.
UNIT PARTS
Single Zone Art Cool Premier
The following table shows the available outdoor and indoor units, their model numbers, along with the factory provided controller.
Table 1: Single Zone Art Cool Premier
Outdoor Unit Model/Btu/h Indoor Unit Model/Btu/h Controller
LAU090HYV / 9,000
LAU120HYV / 12,000
LAN090HYV / 9,000
LAN120HYV / 12,000
AKB73835312

8|INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
UNIT OPERATION
Basic Remote Control Operation
The Single Zone Art Cool Premier comes equipped with a remote control, enabling convenient air conditioner
operation. Table 2 below describes basic button functionality, along with the displayed icon/symbol that will ap-
pear on the screen. Figure 1 shows the display screen and placement of the buttons on the Remote Control.
Table 2: Remote Control Operation
Control Panel Display Screen Description
Air Circulation Button*: Used to circulate the room air without cooling
or heating.
Auto Cleaning/Energy Saving Buttons*: Sets time related to special
functions such as automatic cleaning and placing the unit into energy
efficient cooling mode .
N/A
On/Off Button: Turns the remote controller power on/off.
Temperature Adjustment Buttons: Press up or down “arrow” temp
buttons to adjust temperature during cooling or heating. Display screen will
show adjusted temperature.
Operation Mode Selection Button: Cycles through the operation
mode, from top left symbols:
Cooling mode:
Auto operation or auto changeover:
Dehumidifying mode:
Heating mode:
Fan Speed Button: Adjusts the indoor fan speed by pressing repeatedly.
.Also allows for natural air circulation (when wavy arrow is displayed)
Jet Button (Heating/Cooling)*: Rapid heating or cooling of indoor
temperature. Temperature heats or cools in a short period of time.
Air Flow Direction (Swing) Buttons: Adjusts the directions of air flow;
vertically or horizontally through louvres.
Room Temperature Display Button: Displays the current room
temperature. Temperature value can be changed from °C or °F when button is
pressed and held for 5 seconds.
Sleep Mode Auto Button*: Pressing will activate sleep mode timer
selection. Pressing the allows you to select up to 7 hours prior to
the unit automatically turning off.
* Depending on the Single Zone Wall Mounted
Model used, some functions may not be supported.
Single Zone Art Cool Premier Remote Control
Display
screen
Control
panel
Figure 1: Art Cool Premier Remote
Control - Model AKB73835312

INTRODUCTION |9
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Premier
Remote Control
UNIT OPERATION
Control Panel Display Screen Description
Timer Buttons (On/Off): Sets the clock timer to enable automatic start
and stop times for air conditioner activity.
Pressing the enables the user to set the actual time as shown on
the display screen.
Light Button: Adjusts the brightness of the indoor unit display.
N/A
Set/Clear Button: Either sets (commits) a function or clears (cancels) a
function.
When pressing and holding for 3 seconds or longer, allows the user to set
current time by using the buttons.
N/A
Up/Down (Directional) Buttons: Used in conjunction with other
primary mode and operation buttons. Once in desired mode, user can press
the Up and Down button to move forward or backward in selections. For
example these buttons can be used to set timer clock settings or brightness of
the indoor unit display.
N/A
Reset Button: Pin reset indention (shown under the “UP” button) allows
the user to reset the air conditioner to factory defaults by inserting a pen tip or
small screw driver into hole.
Table 2: Remote Control Operation (Continued)

10 |INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
UNIT OPERATION
Remote Control
Installing Batteries into Remote Control
Installing the Remote Control Holder
1. Insert AAA batteries (1.5V) before turning on the remote.
2. Remove the battery cover from the back of the unit, by pushing
down the tab at the top of the cover ((1) Figure 2).
3. Lift battery cover off of the unit as shown ((2) Figure 2).
4. Insert the batteries, following the + and - terminal indications
inside the battery compartment. Make sure battery is securely in
place (Figure 3).
5. Reattach the battery cover.
• If the display screen of the remote control starts to fade, replace the
batteries.
• When batteries are removed, the temperature unit will be reset to
Celsius as the default.
Installation of the remote control holder should be out of direct sunlight, in
order to protect the remote control from heat exposure.
1. Choose a safe and easily accessible place to attach the remote
control holder.
2. Using a phillips head screwdriver, insert and fasten the 2 screws
into the holes at the base (Figure 4).
3. Gently “wiggle” the base to make sure that it is firmly attached to
the wall. Tighten the screws further if you feel the wall mount is
still loose.
4. Slide the remote control vertically into the holder (Figure 5).
Figure 2: Remote Control Battery Cover
Figure 3: Battery Placement
Figure 4: Holder Attachment
Figure 5: Insertion of Remote into Holder
Single Zone Art Cool Premier

INTRODUCTION |11
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
UNIT OPERATION
Initializing Operation of Remote Control
To begin communication between the indoor unit and the remote control, point the remote control towards the signal receiver, located at
the bottom right hand corner of the indoor unit (see Figure 6).
• Make sure to point the remote control directly at the indoor unit, otherwise
the remote might accidentally activate and operate other electronic devices
due to the signal being picked up.
• For optimum operation, periodically use a soft cloth to wipe the signal trans-
mitter on the remote control and the receiver on the indoor unit.
• Jet Mode in heating operation doesn’t work when equipped with a wired
remote controller.
• ON/OFF reserve mode doesn’t work when equipped with a wired remote
controller.
Single Zone Art Cool Premier
Remote Control, Indoor Unit
Indoor Unit Basic Components
Refer to Figure 7 for the basic layout of the components of the Art Cool Premier indoor unit,
when following operational, maintenance or troubleshooting instructions in this manual.
Figure 7: Art Cool Premier Indoor Unit Basic Components
Figure 6: Initializing Remote Control
On/Off button
Signal receiver
(for remote control)
Operation lamp
3M Micro Protection Filter
Smart A/C Slot (Optional Device)
Air deflector
(vertical louver & Horizontal vane)
Air outlet
Front Panel
Air Filter
The number of operation lamps and
their locations may vary, depending on
the model of the indoor unit.

12 |INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
BASIC FUNCTIONS
Cooling Operation -
Adjusting the Air Flow (Swing) Direction
Cooling Operation
1. On the Remote Control, press to turn on the power to the
indoor unit.
2. Press repeatedly until the cooling symbol (snowflake)
is displayed on the Remote Control display screen.
3. Press the up and down arrow buttons to increase
or decrease currently displayed temperature.
The temperature range for cooling is: 64.4 °F (18 °C) - 86 °F (30 °C).
Heating Operation
1. On the Remote Control, press to turn on the power to the
indoor unit.
2. Press repeatedly until the heating symbol (sun) is
displayed on the Remote Control display screen.
3. Press the up and down arrow buttons
to increase or decrease the currently displayed temperature.
• The temperature range for heating is: 60.8 °F (16 °C) - 86 °F
(30 °C).
• Cooling-only models do not support this function.
Dehumidifying Operation
This mode removes excess moisture from an environment with high
humidity or during local rainy seasons, 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. On the Remote Control, press to turn on the power to the
indoor unit.
2. Press repeatedly until the dehumidifying symbol (raindrop)
is displayed on the Remote Control display screen.
• When indoor unit is in Dehumidifying Mode, you cannot adjust the
room temperature. Temperature is being adjusted automatically.
• While in Dehumidifying Mode, display screen will not show the tem-
perature value.
Air Circulation Operation
This mode only circulates the indoor air without changing the room
temperature.
The cooling lamp lights up in air circulation mode on the indoor unit.
1. On the Remote Control, press to turn on the power to the
indoor unit.
2. Press to activate the air circulation operation.
will be displayed on the Remote Control display screen.
3. Press to adjust the fan speed.
Adjusting the Fan Speed
1. Press repeatedly to adjust the fan speed. See Table 3
below for the various speed adjustments.
2. Select if you want natural air. The fan speed adjusts auto-
matically.
Table 3: Fan Speed Levels
Adjusting the Air Flow (Swing)
Direction
1. Toadjustthedirectionoftheairowvertically,press
repeatedly and select the desired position.
2. Select on the Remote Control display screen, to adjust the
desired vertical position automatically.
3. To adjust the direction of the air flow horizontally, press
repeatedly and select the desired position.
4. Select on the Remote Control display screen, to adjust
the desired horizontal position automatically.
• Some Single Zone Inverter Wall Mounted models may not support
air flow direction. Check your model to be sure that it is an option.
• When restarting the air conditioner, it will remember the previously
set direction of air flow. As a result, the air deflector may not accu-
rately reect the icon displayed on the Remote Control. If this occurs,
press or to adjust the direction of the air ow once more.
Remark Speed
High
Medium - High
Medium
Medium - Low
Low
Natural Wind

INTRODUCTION |13
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
BASIC FUNCTIONS
Timer Setting Functionality
Setting the Current Time
Setting the Timer
Setting Air Conditioner On Time
Setting Air Conditioner Off Time
Cancelling Timer Settings
1. Press .
•To cancel all timer settings, press once more.
Setting Sleep Mode
The Art Cool Premier unit can be programmed through timer settings to turn on and off at set times during the day and night. This functional-
ity allows you to save energy and utilize the air conditioner more efficiently.
1. Press and hold for longer than 3 seconds to initiate setting
functionality.
•The AM/PM icon will flicker at the bottom of the display screen.
2. Press one of the up and down buttons, to scroll and
then select the minutes (hours will scroll).
3. Press when done to exit the setting mode.
1. Press the On button under the Timer area of the
Remote Control.
•An “ON” icon will flicker to the right of the timer display on the
display screen.
2. Press one of the up or down buttons to select the
minutes (hours will scroll).
3. Press when done to exit the setting mode.
1. Press the OFF button under the Timer area of the
Remote Control.
•An “OFF” icon will flicker to the right of the timer display on the
display screen.
2. Press one of the up or down buttons to select the
minutes (hours will scroll).
3. Press when done to exit the setting mode.
The Sleep Mode is used to turn off the air conditioner at a certain set
time automatically so that you don’t have to turn it off manually. It is
a “countdown” timer and can be set for up to 7 hours ahead of the
current time.
1. Press to turn on the power.
2. Press Sleep to initiate Sleep Mode settings.
3. Press one of the up or down buttons to select the
number of hours.
4. Press when done to exit the setting mode.
• appears on the display screen to signify unit has been set
to Sleep Mode.
•You display screen might appear slightly different depending on
your DFS Inverter model.
• In the Cooling and Dehumidifying Modes, the temperature increases
by 1.8 °F (1 °C) after 30 minutes and by a further 1.8 °F (1 °C) after
another 30 minutes for a more comfortable sleep environment. The
temperature increases up to 3.6 °F (2 °C) from the preset temperature.

14 |INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
ADVANCED FUNCTIONS
Jet Cool/Heat Operation -
Auto Changeover Operation
Follow the operational directions in this section to work with advanced functionality and features of the Art Cool Premier Wall Mounted system.
Jet Cool/Heat Operation
Rapid Cooling and Heating of Room Temperature
This functionality allows you to rapidly cool indoor air (during sum-
mer months) or warm indoor air (during winter months).
1. Press to turn on the power.
2. Press the Jet button .
•In Jet Cool Mode, unit operates at a setpoint of 64.4 °F (18 °C) for
a duration of 30 minutes.
• In Jet Heat Mode, unit operates at a setpoint of 86 °F (30 °C) for a
duration of 30 minutes.
• Jet Cool/Heat Mode cannot be run during Air Circulation, Auto, or
Auto Changeover Modes.
• This function may not be supported on all Single Zone Inverter models.
Auto Clean Operation
Indoor Air Purification
While in cooling and dehumidifying mode, the air conditioner gener-
ates moisture on the interior of the indoor unit. The Auto Clean
operation is used to remove this type of moisture.
1. Press to start dehumidifying operation.
• is displayed on the Remote Control display screen.
• If the power is turned off, the fan will operate for 30 minutes and will
clean the inside of the indoor unit.
• Some buttons (functionality) will not operate while the system is in
Auto Cleaning Mode.
Artificial Intelligence
Auto Operation - (Cooling Only Models)
During this functionality, the fan speed and the temperature adjust
automatically, based on room temperature.
1. Press to turn on the power.
2. Press the Mode button repeatedly to select Auto operation
(see icon in Figure 8 below).
3. Press the up and down arrows to select the desired
numerical operation code for cooling/heating strength. See the
table in Figure 8 below for a description of each numerical value.
• During the Artificial Intelligence Mode, you cannot adjust the fan
speed.
• During this mode, you can set the air deector to rotate automatically.
• This function may not be supported on all Single Zone Inverter models.
Code Description
2 Cool
1 Cool slightly
0 Maintain
room
temperature
-1 Heat slightly
-2 Heat
Figure 8: Auto Intelligence Screen with Code Description
Auto Changeover Operation
This functionality changes the operation mode automatically to main-
tain a set temperature of ± 3.6 °F (±2 °C).
1. Press to turn on the power.
2. Press the Mode button repeatedly to select Auto operation
(see icon display in red box in Figure 9 below).
3. Press the up and down arrows to select the desired
temperature.
•The temperature range is 64.4 °F (18 °C) through 86 °F (30 °C).
4. Press repeatedly as needed to adjust the fan speed.
Auto Changeover
Figure 9: Auto Changeover Display
• This function may not be supported on all Single Zone Inverter models.
• You screen display may look slightly different depending on your DFS
Inverter model.
°C/°F Screen Display
The Single Zone Art Cool Premier unit can be set in either °C or °F
temperature readout, by pressing and holding the Room Tempera-
ture button for 5 seconds.
• This function may be not supported on all DFS Inverter models.

INTRODUCTION |15
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
ADVANCED FUNCTIONS
Energy Saving Operation -
Manual Operation
Energy Saving Operation - Cooling
Placing the unit in this mode minimizes power consumption during
cooling. It increases the set temperature to the optimal level for a
more comfortable environment.
1. Press to turn on the power.
2. Press repeatedly until the cooling symbol (snowflake)
is displayed on the Remote Control display screen.
3. Press to place unit into Energy Saving mode.
• appears on the display screen.
• During Energy Saving Mode, you could see a different temperature
display between the actual indoor unit and the Remote Control dis-
play screen. This does not mean that the unit is malfunctioning in
any way.
• This function may not be supported on all Single Zone Inverter models.
Adjusting Display Screen Brightness
The indoor unit’s screen can be adjusted for brightness.
•Press repeatedly on the indoor unit to set the brightness to
the desired level.
• This function may not be supported on all Single Zone Inverter models.
Manual Operation of Air Conditioner
Operation Without Use of Remote Control
If the Remote Control is unavailable or inoperable (i.e., new batteries
are called for), you can use the On/Off button located on the indoor
wall unit (Inverter) to activate the air conditioner.
• The fan speed will be automatically set at High when manually oper-
ating the air conditioner from the wall unit.
Turning on the Air Conditioner - Manual Operation
1. Open the front panel of the DFS wall unit by lifting both sides of
the cover slightly as shown in Figure 10.
Figure 10: Indoor Unit - Lift Front Panel
2. Press the On/Off button as shown in Figure 11.
Press the On/O button.
Figure 11: On/Off Button Location on Indoor Unit
•Your wall unit might appear slightly different depending on the DFS
Inverter model.
3. Immediately, close the front panel after pressing On/Off button as
shown in Figure 12. Use both hands when closing the panel.
Figure 12: Close Front Panel of Indoor Unit
If your model is capable of both heating and cooling, the operation
mode changes, depending on the room temperature. Refer to Table
4 below as to what the set temperature will be, based on your room
temperature.
Room Temperature Set Temperature Operation Mode
Below 69.8 °F 75.2 °F Heating Mode
Above 69.8 °F but
below 75.2 °F
73.4 °F Dehumidifying
Operation
Above 75.2 °F 71.6 °F Cooling Operation
Table 4: Set Temperature
For cooling only models, the temperature will be set at 71.6 °F.

16 |INTRODUCTION
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Auto Restart Functionality
After a power failure, the unit can be programmed to automatically
restart (reboot) and remember its previous settings. This function is
a factory default setting. However, should you wish to disable the
auto restart feature, follow the steps below.
Disable Auto Restart
1. Open the front cover of the indoor unit by lifting up both sides of
the cover slightly (use two hands). Refer back to Figure 14.
2. Press the On/Off button and hold it for 6 seconds. Refer back to
Figure 15.
•The indoor unit will beep twice and the light will blink 6 times.
•Unit will now be disabled for auto restart.
Re-enable Auto Restart
To re-enable the auto restart function, press the On/Off button and
hold it for 6 seconds.
•The indoor unit will beep twice and the blue lamp will blink 4 times.
•The unit will now be enabled for auto restart.
ADVANCED FUNCTIONS
Turning on the Air Conditioner - Manual Operation
1. Close the front panel of the wall unit by lifting down both sides of
the panel slightly, as shown in Figure 13. Use both hands when
closing the panel.
Figure 13: Closing Front Panel of Wall Unit
2. Next, open the front cover by lifting both sides of the cover
slightly and then sliding up as show by #2 in Figure 14.
Figure 14: Opening Front Panel of Wall Unit
Figure 15: On/Off Button on Wall Unit
• Your screen display may look slightly different depending on your DFS
Inverter model.
3. Press the On/Off button on the indoor wall unit (Figure 15).
Press the On/O button.
Manual Operation
• This function may not be supported on all Single Zone Inverter models.
• If you press and hold the On/Off button for 3-5 seconds, instead of 6
seconds (in other words, a shorter duration) the unit will be placed in test
operation mode. In test operation mode, the unit blows out strong air for
cooling, for 18 minutes, and then returns to the factory default settings.
Figure 16: Closing Front Panel of Wall Unit
4. Immediately, close the front panel as soon as you press the
On/Off button by pushing down both sides of the panel slightly
(Figure 16).

Due to our policy of continuous product innovation, some specifications may change without notification. Due to our policy of continuous product innovation, some specifications may change without notification. APPLICATION GUIDELINES | 17
Maintenance
MAINTENANCE
Indoor Unit - Cleaning Interval
Clean the product regularly to maintain optimal performance and to prevent possible breakdown. Refer to Figure 17 for filter placement.
Refer to Table 5 for detailed instructions on maintenance. Review all safety instructions and warnings at the front of this manual; and adhere
to all warnings and notes on this page before proceeding with maintenance.
Figure 17: Art Cool Premier Indoor Filter Locations
Item Cleaning Interval Cleaning Instructions
Air filter Every 2 weeks See "Air Filter - Cleaning/Maintenance" on page 18.
3M Micro Protection Filter Monthly •See "Cleaning the 3M Micro Protection Filter" on page 18.
Indoor unit surface Regularly •Use a soft, dry cloth.
•Do not use bleach or abrasives.
Outdoor unit Regularly, as needed •Use steam to clean the heat exchanger coils and the panel vents.
•If needed, consult with technician on proper care.
Table 5: Maintenance and Cleaning Interval Instructions
Maintenance Precautions
• Turn off the power and unplug the cord before performing any maintenance to avoid electric shock.
• Never use water that is hotter than 104 °F (40 °C) when cleaning the filters. It may cause deformation (warping) or discoloration.
• Never use volatile substances when cleaning the filters. They may damage the surface of the product.
• Do not wash the 3M Micro Protection Filter with water. Filter may be damaged.
• The location and shape of the filter may differ in the Single Zone Inverter units, depending on the model.
• Be sure to clean the heat exchanger coils of the outdoor unit regularly. Dirt collected in the coils may decrease the operational efficiency or
increase energy costs.
3M Micro Protection Filter
Air filter

18 |APPLICATION GUIDELINES
Single Zone Art Cool Premier Owner’s Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
Cleaning the Air Filter
Cleaning 3M Micro Protection Filter
MAINTENANCE
Air Filter - Cleaning/Maintenance
3M Micro Protection Filter - Cleaning/
Maintenance
Clean the air filter located in the indoor unit, once every 2 weeks or
more often as necessary. There are two filter screens on this unit.
Clean the 3M Micro Protection Filter located in the indoor unit, once
a month or more often as necessary. The 3M filter is located behind
the indoor unit's right-hand side air filter (as looking at the unit from
the front).
1. Turn off the power and unplug the power cord.
2. Open the front cover by lifting up both sides of the cover slightly
(see #1 on Figure 18).
• Use two hands when lifting the front panel away from the indoor unit.
• Maintain a grip on the front panel at all times while removing either
air or 3M Micro Protection Filter.
3. Grasp the knob/tab at the bottom the air filter, lift up slightly and
slide it from the indoor unit.
Figure 18: Lifting of Front Panel from Indoor Unit
Figure 19: Detaching Filter from Indoor Unit
Figure 20: Detaching 3M Micro Protection Filter from Indoor Unit
Air lters differ from the 3M Micro Protection Filter in this unit. For clean-
ing the 3M Micro Filter see "3M Micro Protection Filter - Cleaning/Main-
tenance" .
1. 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.
2. Dry filter completely before placing back in the unit.
3. Replace the filter by sliding back into the unit and then while
grasping the bottom knob/tab, lowering back into the unit.
4. Close the front panel of the indoor unit, by reversing the steps
above.
1. Turn off the power and unplug the power cord.
2. Open the front cover by lifting up both sides of the cover slightly
(refer back to #1 on Figure 18).
3. Remove the right-side air filter as instructed in "Air Filter - Clean-
ing/Maintenance".
4. Remove the 3M Micro Protection Filter by popping it out of its
holding tray within the unit (Figure 20).
5. Use a vacuum cleaner to remove dirt from the filter.
6. Re-insert the 3M filter by reversing the steps above.
Do not wash the 3M Micro Protection Filter with water because the
filter can be damaged.
•It is suggested to change the 3M Micro Protection Filter every 6
months.
•The location of the filter may differ, depending on the indoor unit
model.
•To obtain more filters, contact your installing Contractor.

Due to our policy of continuous product innovation, some specifications may change without notification. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 19
Troubleshooting
TROUBLESHOOTING
Single Zone Art Cool Premier
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 immediately for repair procedures.
Before requesting service refer to Table 6 in this section, regarding initial troubleshooting steps that can be taken. If the problem persists,
contact your local service center.
LG Customer Information
Contact LG Customer Information Center immediately if you see any issues as referred to in Table 6.
LG Customer Information Center
LG Electronics USA
201 James Record Rd SW,
Huntsville, AL 35824
888-865-3026
For USA calls:
Press #2 for PTAC, TTW
Press #3 for DFS, Multi V
-- Call the installing contractor for your product, as
warranty service will be provided by them.
-- Call the USA number, if service issues have not been
addressed by the contractor.
LGECI
LG Electronics Canada Inc.
20 Norelco Drive
North York, Ontario M9L 2X6
Canada
1-888-LG-CANADA
(888-542-2623)
All service calls for CANADA.
WWW.LG.COM Online registration of product

Due to our policy of continuous product innovation, some specifications may change without notification.
20 |REFRIGERANT DESIGN
Single Zone Art Cool Premier Owner’s Manual
TROUBLESHOOTING
Table 6: Art Cool Premier Troubleshooting
Issue Cause Corrective Action
There is a burning smell and strange sound coming
from the unit.
N/A Immediately turn off the air conditioner. Contact
your installing contractor.
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 operating properly.
The air conditioner does not work.
A fuse has blown or the power
supply is blocked.
Replace the fuse or check if the circuit breaker
has tripped.
A power failure has occurred. Turn off the air conditioner when a power failure
occurs. When the power is restored, wait 3 min-
utes, and then turn on the air conditioner.
The voltage is too high or too
low.
Check if the circuit breaker has tripped.
The air conditioner turned off
automatically at a preset time.
Press the power button again.
Battery setting is wrong in the
remote controller.
•Check to see that battery is inserted with the
correct terminals (+) and (-).
•Replace with fresh batteries.
The air conditioner does not generate cool air.
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.
Cold air is escaping from the
room.
Make sure that no cold air is escaping through
ventilation points in the room.
The desired temperature is
higher than the set temperature.
Set the desired temperature to a level lower
than the current temperature.
There is a heating source
nearby.
Avoid using a heat generator such as an electric
oven or a gas burner while the air conditioner is
in operation.
Air circulation operation is
selected.
In the air circulation operation, air blows from
the air conditioner without cooling or heating
the indoor air. Switch the operation mode to the
cooling operation.
Outside temperature
is too high.
Air conditioner cooling capacity may not be suffi-
cient to handle hot weather.
Single Zone Art Cool Premier