LG Art Cool Gallery Wall Mounted User manual

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

DFS-OL-AK-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 Gallery
Remote Control
Basic Functions.............................................................................. 12-13
Advanced Functions ...................................................................... 14-15
Jet Cool/Heat Operation
Air Purication Operation
Energy Saving Operation
Automatic Restart
MAINTENANCE............................................................................... 16-17
Indoor Unit - Cleaning Interval
Cleaning the Air Filter
TROUBLESHOOTING..................................................................... 18-19
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.
3

4|INTRODUCTION
Single Zone Art Cool Gallery Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Gallery
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
• 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 not place any objects on the power cord; because it may result in
electric shock or product failure.
• Failure to carefully read and follow all instructions in this manual
may result in equipment malfunction, property damage, personal in-
jury and/or death.

INTRODUCTION |5
Safety
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Gallery
SAFETY INSTRUCTIONS
Installation Safety Instructions
• 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 condi-
tioner. 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.
Usage
• 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 re. Failure to do so may result in explosion or re.
• 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 that 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, re, 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 Gallery Owner’s Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Gallery
SAFETY INSTRUCTIONS
• 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.
Usage (Continued)
• 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. It may result in explosion 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.
Maintenance
• 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 Gallery
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 Gallery Parts
Outdoor Unit Model/ Btu/h Indoor Unit Model/ Btu/h Controller
LAU090HVP / 9,000
LAU120HVP / 12,000
LAN090HVP / 9,000
LAN120HVP / 12,000
AKB73635607

8|INTRODUCTION
Single Zone Art Cool Gallery 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 Gallery 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 control 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.
- Light Button: Adjusts the brightness of the indoor unit display.
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 Gallery Remote Control
Figure 1: Single Zone Art
Cool Gallery Remote Control -
Model AKB73635607

INTRODUCTION |9
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
Single Zone Art Cool Gallery
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.
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 Gallery 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 Gallery

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 transmitter on the remote
control and the receiver on the indoor unit.
Single Zone Art Cool Gallery
Remote Control, Indoor Unit
Indoor Unit Basic Components
Signal Receiver
Front Panel
Front Panel
Hooks (3)
Air Discharge
Air Filter
ON/OFF button
Refer to Figure 7 for the basic layout of the components of the Single Zone Art Cool Gallery indoor
unit, when following operational, maintenance or troubleshooting instructions in this manual.
Figure 7: Art Cool Gallery Indoor Unit Basic Components
Figure 6: Initializing Remote Control

12 |INTRODUCTION
Single Zone Art Cool Gallery 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: 65 °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: 61 °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. It 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.
Display Screen Speed
High
Medium
Medium - Low
Natural Wind
Table 3: Fan Speed Levels
Adjusting the Air Flow (Swing)
Direction
1. Presstoactivatetheautomaticmulti-directionalairow.
2. Select on the Remote Control display screen, to choose
the horizontal or vertical louver swing direction for air flow.
• 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 ac-
curately reflect the icon displayed on the Remote Control. If this oc-
curs, press to adjust the direction of the air flow once more.

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 Gallery unit can be programmed through timer settings to turn on and off at set times during the day and night. This functionality
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.
• 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 an-
other 30 minutes for a more comfortable sleep environment. The tem-
peratures increases up to 3.6 °F (2 °C) from the preset temperature.

14 |INTRODUCTION
Single Zone Art Cool Gallery 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 Gallery 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 65 °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 mode.
• 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
generates moisture on the interior of the indoor unit. The Auto Clean
operation is used to remove this type of moisture.
1. Press to turn on the power.
2. 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 buttons 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 buttons 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.
°C/°F Screen Display
The Single Zone Art Cool Gallery unit can be set in either °C or °F
temperature readout, by pressing and holding the Room Tempera-
ture button for 5 seconds.

INTRODUCTION |15
Operation
Due to our policy of continuous product innovation, some specications may change without notication.
ADVANCED FUNCTIONS
Energy Saving Operation -
Automatic Restart
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 Savings 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 display
screen. This does not mean that the unit is malfunctioning in any way.
Adjusting Display Screen Brightness
The indoor unit’s screen can be adjusted for brightness.
•Press the Power button 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.
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. Refer to Figure 10.
Disable Auto Restart
1. Open the front cover of the indoor unit by lifting up both sides of
the cover slightly.
2. Press and hold it for 6 seconds.
•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 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.
• This function may not be supported on all Single Zone Inverter models.
• If you press and hold the 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.
Signal Receiver
Front Panel
Front Panel
Hooks (3)
Air Discharge
Air Filter
ON/OFF button
Figure 10: Art Cool Gallery Indoor Unit Basic Components

Due to our policy of continuous product innovation, some specifications may change without notification.
16 |APPLICATION GUIDELINES
Single Zone Art Cool Gallery Owner’s Manual
MAINTENANCE
Indoor Unit - Cleaning Interval
Clean the product regularly to maintain optimal performance and to prevent possible breakdown. Refer to Figure 11 for the basic components
of the indoor unit. Refer to Table 4 for detailed instructions on maintenance. Review all safety instructions and warning at the front of this
manual; and adhere to all warnings and notes on this page before proceeding with maintenance.
Signal Receiver
Front Panel
Front Panel
Hooks (3)
Air Discharge
Air Filter
ON/OFF button
Figure 11: Art Cool Gallery Indoor Unit Basic Components
Item Cleaning Interval Cleaning Instructions
Air filter Every 2 weeks See "Air Filter - Cleaning/Maintenance" on page 17.
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 4: Maintenance and Cleaning Interval
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; because it may cause deformation (warping) or discoloration.
• Never use volatile substances when cleaning the filters; because they may damage the surface of the product.
• 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.

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
Cleaning the Air Filter
MAINTENANCE
Air Filter - Cleaning/Maintenance
Clean the air filter located in the indoor unit, once every 2 weeks or
more often as necessary.
1. Pull out the upper section of the front panel, gently from the
indoor unit (see Figure 12 below).
2. Once top is loosened, pull front panel up and then away from the
bottom of the unit.
•The bottom of the front panel should snap out of the bottom three
front panel hooks (see Figure 11 for placement of hooks).
Figure 12: Lifting of Front Panel from Indoor Unit
• 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 the lter.
• Front panel does not have a locking mechanism, so failure to hold
the panel open may result in head and bodily injuries.
3. Using two hands, swing front panel away and then up.
4. Starting at one of the top corners of the filter, detach the filter
from the indoor unit (see step #5 in Figure 13).
5. Lift out the entire filter once detached from the unit.
6. Rinse down the filter and let it air dry completely.
7. Place the filter back onto the front of the indoor unit, by hooking
the top of the filter under the two filter tabs as shown in step #6 of
Figure 13 below.
8. Place the bottom of the filter into the two filter tabs at the bottom
of the indoor unit to complete attachment.
9. Close the front panel of the indoor unit, by reversing the steps
above.
•Take care to place the bottom of the front panel into the three
hooks located at the bottom of the indoor unit; in order to anchor
the top before pushing in and securing.
Figure 13: Detaching Filter from Indoor Unit

Due to our policy of continuous product innovation, some specifications may change without notification.
18 |REFRIGERANT DESIGN
Single Zone Art Cool Gallery Owner’s Manual
TROUBLESHOOTING
Single Zone Art Cool Gallery
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 5 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 5.
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. Due to our policy of continuous product innovation, some specifications may change without notification. REFRIGERANT DESIGN | 19
Troubleshooting
TROUBLESHOOTING
Table 5: Art Cool Gallery 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. Unplug
the power cord and contact the service center.
Water leaks from the indoor unit even when the
humidity level is low.
The power cord is damaged or generating excessive
heat.
A switch, a circuit breaker (safety, ground) or a fuse
is not operating properly.
The air conditioner does not work.
The air conditioner is unplugged. Check whether the power cord is plugged into
the outlet.
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.
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.
During the air circulation operation, air blows
from the air conditioner without cooling or heat-
ing the indoor air. Switch the operation mode to
the cooling operation.
It is not possible to adjust the fan speed.
The auto operation, jet operation
or dehumidifying operation is
selected.
In some operation modes, such as the jet or de-
humidifying operation modes, you cannot adjust
the fan speed. Check to make sure you are in
an operation mode in which you can adjust the
fan speed.
It is not possible to adjust the temperature.
The air circulation operation or
jet operation is selected.
In some operation modes, such as the air circu-
lation or jet operation mode, you cannot adjust
the temperature. Check to make sure you are in
an operation mode in which you can adjust the
temperature.

LG Electronics
Commercial Air Conditioning Division
11405 Old Roswell Road
Alpharetta, Georgia 30009
www.lg-vrf.com
DFS-OL-AK-001-US_014C07
20001747 ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics Commercial Products Support
1-888-865-3026 USA
Follow the prompts for commercial A/C products.