P/NO : MFL67502019
OWNER’S MANUAL
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : WALL MOUNTED
AIR
CONDITIONER
http://www.lghvac.com
www.lg.com
ENGLISH
FRANÇAIS
ESPAÑOL
2
TIPS FOR SAVING ENERGY
ENGLISH
Here are some tips that will help you minimize power consumption when you use your air
conditioner.
• Do not cool excessively indoors. This may be harmful for your health and may consume
more electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool indoor air quickly.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may
block the air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
TIPS FOR SAVING ENERGY
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and to ensure peak
performance of your product.
WARNING
It can result in serious injury or death when the directions are ignored.
CAUTION
It can result in minor injury or product damage when the directions are ignored.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Installation MUST conform with local building codes or, in the absence of local codes, with
the National Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to read and follow all instructions in this manual can result in equipment malfunction,
property damage, personal injury and/or death.
Power
• Unplug the power plug immediately in the event of a blackout or thunderstorm. Failure to do
so may result in fire or electric shock.
• Always use a power plug and socket with a ground terminal. Failure to do so may result in
electric shock or product failure.
• Install a dedicated electric outlet and circuit breaker before you use the air conditioner.
Failure to do so may result in electric shock or product failure.
• Do not connect the ground wire to a gas pipe, a lightning rod or a telephone ground wire. It
may result in electric shock or product failure.
• Use a standard circuit breaker and fuse conforming with the rating of the air conditioner.
Failure to do so may result in electric shock or product failure.
• Make sure to check that the power cable plug is not dirty, loose or broken and then only
insert the plug completely. It may result in electric shock or product failure.
• Do not modify or extend the power cable. If the power cable or cord has scratches or skin
peeled off or deteriorated then it must be replaced. It may result in fire or electric shock.
• Don’t use a power cord, a plug or a loose socket which is damaged. It may result in fire or
electric shock.
• Do not use a damaged power cord or plug. It may result in electric shock or product failure.
• Do not touch, operate or repair the air conditioner with wet hands. It may result in electric
shock or product failure.
• Make sure that the power plug is not damaged when you move the air conditioner. Failure to
doc so may result in electric shock or product failure.
!
!
!
3
ENGLISH
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
• Do not place a heater or other heating appliances near the power cable. It may result in fire,
electric shock, or product failure.
• Make sure that the power cord is not pulled or damaged while the air conditioner is operating. Failure to do so may result in fire, electric shock, or product failure.
• Do not place any objects on the power cord. It may result in electric shock or product failure.
Installation
• Do not install the air conditioner on an unstable surface or where there may be a danger of it
falling. It may result in death, serious injury, or product failure.
• Contact an authorized service center when you install or relocate the air conditioner. Failure to do
so may result in serious injury or product failure.
• 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 can 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 where flammable liquids or gases such as gasoline, propane, paint
thinner, etc. are stored. It may result in explosion or fire.
• Make sure that the pipe and the power cable that connect the indoor unit and the outdoor unit are
not pulled tight when you install 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 specific refrigerant. If air enters the refrigerant
system, it may result in an excessively high pressure that causes injury or damage to the equipment.
Use
• Be sure to use only those parts which are listed in the service parts list. Never attempt to modify
the equipment. It may result in death, serious injury, or product failure.
• Do not pull the power cord when you remove the power plug. It may result in death or electric
shock.
• Discard the batteries where there is no danger of fire. Failure to do so may result in explosion or
fire.
• Contact a qualified HVAC technician when the air conditioner is submerged in water due to flood-
ing. Failure to do so may result in death, explosion, or fire.
• Only use components that are approved by the manufacturer and do not repair or modify them.
Failure to do so may result in electric shock or product failure.
• Only use the refrigerant specified on the air conditioner label. Failure to do so may result in explo-
sion or fire.
• Do not allow water to run into the air conditioner. It may result in explosion or fire.
• Do not leave flammable substances such as gasoline, benzene and thinner near the air conditioner.
It may result in explosion or fire.
• Do not use the air conditioner for an extended period of time in a small place without proper venti-
lation. It may result in explosion or fire.
• Do not touch the electrostatic filter after opening the front grille. It may result in electric shock or
product failure.
• For inner cleaning, contact a qualified HVAC technician or a dealer.
Using harsh detergents may cause corrosion or damage to the unit and may lead to product failure,
fire, or electric shock.
4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
5
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
• Unplug the power plug if there is a noise, smell or smoke coming from the air conditioner.
Failure to do so may result in explosion or fire.
• Make sure to ventilate sufficiently when this air conditioner and a heating appliance such as
a heater are used simultaneously. Failure to do so may result in fire, serious injury, or product
failure.
• Make sure that children do not climb on or hit the outdoor unit. Failure to do so may result in
death or product failure.
• Do not turn the air conditioner on or off by plugging in or unplugging the power plug. It may
result in fire or electric shock.
• If there is a gas or Freon leak, ventilate sufficiently before using the air conditioner again.
Failure to do so may result in explosion or fire.
• Using the product for special purposes, such as preserving foods, works of art, etc. may
result in death, fire, or electric shock. It is a consumer air conditioner, not a precision refrigeration system.
• Do not block the inlet or outlet of air flow. It may result in explosion or product failure.
• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is
operating. It may result in electric shock or serious injury.
• Do not expose people, animals, or plants to the cold or hot wind from the air conditioner for
prolonged amounts of time. It may result in serious injury.
• Do not drink the water drained from the air conditioner. It may result in serious health complications.
Maintenance
• Turn the main power off and unplug the power plug when you clean or repair the air conditioner. Failure to do so may result in death, serious injury, or product failure.
CAUTION
Installation
• Install the outdoor unit on the north side to prevent the outside unit from being in direct sunlight.
Do not place the indoor unit in direct sunlight from windows. Excessive sunlight may result in product failure.
• Safely dispose of packing materials such as screws, nails or batteries in a packing bag after installa-
tion or repair. It may result in serious injury.
• Do not install the air conditioner where it will be exposed to sea wind (salt spray) directly. It may
result in product failure.
• Install the drain hose properly for smooth drainage of condensed water. Failure to do so may result
in product failure.
• Install the air conditioner where the noise from the outdoor unit or the exhaust gas will not incon-
venience the neighbors. Failure to do so may result in conflict between neighbors.
• Be cautious when you unpack or install the air conditioner. Failure to do so may result in serious
injury or product failure.
• Do not touch the refrigerant leakage during installation or repair. It may result in product failure.
• Transport the air conditioning unit with two or more people or use a forklift. Failure to do so may
result in serious injury.
!
ENGLISH
6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
Use
• 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.
• Make sure that the filter is installed before you operate the air conditioner. Failure to do so may
result in product failure.
• Unplug the power plug when the air conditioner is not used for an extended period of time.
Failure to do so may result in product failure.
• Make sure to check if there is a refrigerant leak after you install or repair the air conditioner.
Failure to do so may result in product failure.
• Do not place any objects on the air conditioner. It may result in product failure.
• If there is a refrigerant leak during the installation of the air conditioner, ventilate the area immedi-
ately. Failure to do so may result in serious injury or product failure.
• Follow the standards of the corresponding region or country for handling the refrigerant and the air
conditioner as well as 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. It may result in product failure.
• Do not recharge or disassemble the batteries. It may result in explosion, fire or serious injury.
• Do not dispose of the batteries in fire. It may result in explosion or fire.
• Stop using the remote control if there is a battery fluid leak. If your clothes or skin are exposed to
the battery fluid from a leak, wash it off with clean water. Failure to do so may result in serious
injury.
• If you swallow the battery fluid from a leak, wash out the inside of your mouth thoroughly and then
consult a doctor. Failure to do so may result in serious health complications.
• 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. It may result in product failure.
• Do not use the product for special purposes,such as preserving foods, works of art, etc. It is a con-
sumer air conditioner, not a precision refrigeration system. There is risk of damage or loss of property.
Maintenance
• Do not use strong cleaning agents, solvents, or water when you clean the indoor air conditioner, as
these may result in serious injury or product failure. Instead, use a smooth, dry cloth to clean the
surfaces of the indoor unit and contact a qualified HVAC technician to clean the outdoor unit.
• Never touch the metal parts of the air conditioner when you remove the air filter. It may result in
serious injury or product failure.
• Use a sturdy stool or ladder when you clean, maintain or repair the air conditioner at a height.
Failure to do so may result in serious injury or product failure.
SAVE THESE INSTUCTIONS
TABLE OF CONTENTS
7
ENGLISH
TABLE OF CONTENTS
2 TIPS FOR SAVING
ENERGY
3 IMPORTANT SAFETY
INSTRUCTIONS
8 BEFORE USE
8 Components
10 Using the remote control
11 - Inserting batteries
11 - Installing the remote control holder
11 Setting the current time
11 °C/°F Conversion
12 BASIC FUNCTIONS
12 Cooling your room
12 Heating your room
12 Removing humidity
13 Airing your room
13 Adjusting the fan speed
13 Adjusting the air flow direction
13 Using the 1 Touch soft air
14 Setting the timer
14 - Turning on the air conditioner
automatically at a set time
14 - Turning off the air conditioner
automatically at a set time
14 - Canceling the timer setting
14 - Setting sleep mode
15 ADVANCED FUNCTIONS
15 Changing room temperature quickly
15 Auto Clean operation
16 Auto Changeover operation
16 Auto operation
17 Energy saving cooling mode
17 Display screen brightness
17 Operating the air conditioner without
the remote control
18 Restarting the air conditioner
automatically
19 LG Smart AC (Optional)
20 MAINTENANCE
20 When not in use
22 Cleaning the air filter
22 Cleaning the 3M Filter
23 TROUBLESHOOTING
23 Self-diagnosis function
23 Before requesting service
26 Function of wired remote control
8
BEFORE USE
ENGLISH
BEFORE USE
Components
ڸ
ڹ
ں
ڻ
ڼ
ڽ
ھ
ڿ
ۀ
ہ
ۂ
NOTE
!
• The number of operation lamps and their locations may vary according to the model of
the air conditioner.
• The Wi-Fi Module, an optional accessory (sold separately), is required to enable Wi-Fi connectivity.
• Wi-Fi is available on single zone wall mounted models.
Indoor unit
* Features may change according to the type of model.
①
Front grille (Front cover)
②
Air inlet
③
ON/OFF button
④
Operation lamp
⑤
Signal Receiver
⑥
Air outlet
⑦
Vertical louver
⑧
Horizontal vane
⑨
Air filter
⑩
3M filter
⑪
Wi-Fi Module (Sold separately)
[Standard Libero Type]
ڸ
ڹ
ں
ڻ
ڼ
ۀ
ہ
ڽ
ھ
ڿ
[Artcool Libero Type]
BEFORE USE
9
ENGLISH
ڸ
ڹ
ں
ڻ
ڼ
ڽ
ڸ
ڹ
ں
ڻ
ڼ
ڽ
Outdoor unit
* Features may change according to the type of model.
①
Air inlet vents
②
Air outlet vents
③
Base plate
④
Refrigerant pipes
⑤
Connection wires
⑥
Drain hose
10
BEFORE USE
ENGLISH
Using the remote control
You can operate the air conditioner more conveniently with the remote control.
Wireless remote control
* Some functions may not be supported, depending on the
model.
Control
panel
Display
screen
Description
X
P
JG
Functions button* : Sets the special
functions.
X
: Auto clean
P
: Energy saving cooling operation.
1 Touch soft air button : Easily adjust
the air flow to deflect direct wind
away.
|
- On/Off button: Turn the power on/off.
_
Temperature adjustment buttons :
Adjust the room temperature when
cooling and heating.
f
AC
DBE
Operation mode selection button* :
Select the operation mode.
Cooling operation (A) / Auto operation
or auto changeover (C) /
Dehumidifying operation (D) /
Heating operation (B) /
Air circulation operation (
E)
M
Jet cooling/heating button* : Warm up
or cool down the indoor temperature
within a short period of time.
g
L
Indoor fan speed button : Adjust the
fan speed.
DE
IJ
Air flow direction buttons :
Adjust the
air flow direction vertically or horizontally.
S
Temperature display button : Display
the room temperature. Also change
unit from °C to °F if held for 5 seconds.
l
Sleep mode auto button : Set the sleep
mode auto operation.
mn
Time buttons : Set the start / end time.
G
-
Light button : Adjust the brightness of
the indoor unit display.
-
Set/clear button : Set or cancel functions.
Also set the current time if held for 3
seconds.
r
-
Reset button: Reset the air conditioner
settings.
Display
screen
Control
panel
BEFORE USE
11
ENGLISH
Inserting batteries
Insert AAA (1.5 V) batteries before using the
remote control.
1 Remove the battery cover.
2 Insert the new batteries and make sure
that the + and - terminals of the batteries
are installed correctly.
3 Reattach the battery cover.
Installing the remote control holder
To protect the remote control, install the holder where there is no direct sunlight.
1 Choose a safe and easily-accessible place.
2 Fix the holder by fastening the 2 screws
firmly with a screwdriver.
3 Slide the remote control into the holder.
Point the remote control towards the signal
receiver at the bottom of the air conditioner
to operate it.
Setting the current time
1 Press p and hold it for longer than 3 sec-
onds.
- The AM/PM icon flickers at the bottom of
the display screen.
2 Press
E
or Fto select the minutes.
3 Press p to finish.
°C/°F Conversion
The unit switches between °C to °F or
from °F to °C if The Temperature Display
Button ( ) is pressed for 5 seconds.
NOTE
!
If the display screen of the remote control
starts to fade, replace the batteries.
NOTE
!
• The remote control may operate other
electronic devices if pointed towards
them. Make sure to point the remote
control towards the signal receiver of
the air conditioner.
• For proper operation, use a soft cloth to
clean the signal transmitter and receiver.
• Jet mode in Heating does not work
when equipped with a wired remote
controller.
• ON/OFF reserve mode does not work
when equipped with a wired remote
controller.
Operating method
12
BASIC FUNCTIONS
ENGLISH
3 Press
G
or Hto set the desired temperature between 60°F (16°C) and 86°F
(30°C).
NOTE
!
• In this mode you cannot adjust the
room temperature, as it is adjusted
automatically. Also, the room temperature is not displayed on the display
screen.
NOTE
!
Cooling-only models do not support this
function.
Cooling Mode
Auto or Auto Changeover Mode
Dehumidification Mode
Heating Mode
Fan Mode
•
Cooling Only Model(
), Heat Pump Model( )
Operation Mode
E
C
Removing humidity
(Dehumidifying operation)
Dehumidifying mode prevents the growth of
mold by removing excess moisture from an
area with high humidity. This mode adjusts
the room temperature and the fan speed
automatically to maintain the optimal level of
humidity.
1 Press | to turn on the power.
2 Press f until D is displayed on the dis-
play screen.
Heating your room
(Heating operation)
1 Press | to turn on the power.
2 Press f until B is displayed on the dis-
play screen.
Cooling your room
(Cooling operation)
1 Press | to turn on the power.
2 Press f until A is displayed on the dis-
play screen.
3 Press
G
or Hto set the desired temperature between 64°F (18°C) and 86°F
(30°C).
BASIC FUNCTIONS
BASIC FUNCTIONS
13
ENGLISH
Airing your room
(Air Circulation operation ; Fan
mode)
This mode only circulates the indoor air
without changing the room temperature. The
cooling lamp lights up in air circulation mode.
1 Press | to turn on the power.
2 Press f until E is displayed on the dis-
play screen.
3 Press g to adjust the fan speed.
Adjusting the fan speed
1 Press g repeatedly to adjust the fan
speed.
- Select 5if you want natural wind.
The fan speed alternates randomly to
mimic a natural breeze.
Adjusting the air flow direction
1 To adjust the direction of the air flow verti-
cally, press
D repeatedly and select the
desired direction.
- Select
I to adjust the direction of the
air flow automatically.
2 To adjust the direction of the air flow hori-
zontally, press E repeatedly and select
the desired direction.
- Select
J to adjust the direction of the
air flow automatically.
Using the 1 Touch soft air
(Comfort Vane operation)
The Comfort Vane option conveniently sets
the vane to a preset position that deflects the
supply air away from blowing directly onto
room occupants. Vane preset positions will
vary depending on the unit’s operating mode
(cooling or heating).
1 Press | to turn on the power.
2 Press .
- is displayed on the screen in cooling,
fan and dehumidifying operation.
- is displayed on the screen in heating
operation.
NOTE
!
•
Adjusting the air flow direction horizontally may
not be supported, depending on the model.
• Adjusting the air deflector arbitrarily may
cause product failure.
• If you restart the air conditioner, it starts
to operate with the previously set direction of air flow, so the air deflector may
not match the icon displayed on the
remote control. When this occurs, press
D or E to adjust the direction of
the air flow again.
Remark Speed
High
Medium - High
Medium
Medium - Low
Low
Natural Wind
NOTE
!
• This feature is not available in Auto or
Auto changeover operation.
• Pressing
f , D or during com-
fort vane operation will turn off the
comfort vane feature.
• When this feature is off, the horizontal
vane operates automatically depending
on the set mode.
14
BASIC FUNCTIONS
ENGLISH
Setting the timer
You can use the timer function to save energy and to use the air conditioner more efficiently.
Turning on the air conditioner automatically at a set time
1 Press m.
- The icon below flickers at the bottom of
the display screen.
2 Press
E
or Fto select the minutes.
3 Press p to finish.
Turning off the air conditioner automatically at a set time
1 Press n.
- The icon below flickers at the bottom of
the display screen.
2 Press
E
or Fto select the minutes.
3 Press p to finish.
Canceling the timer setting
1 Press the timer function you want to can-
cel and then press
p.
- To cancel all timer settings, press and
hold
p.
Setting sleep mode
Use the sleep mode to turn off the air conditioner automatically when you go to sleep.
1 Press | to turn on the power.
2 Press l
3 Press
E
or Fto select the hour
(up to 7 hours).
4 Press p to finish.
-
T is displayed on the display screen in
sleep mode.
NOTE
!
In the Cooling and Dehumidifying modes,
the temperature increases by 2 °F (1 °C)
after 30 minutes and by a further 2 °F
(1 °C) after another 30 minutes for a more
comfortable sleep. The temperature
increases up to 4 °F (2 °C) from the preset temperature.
ADVANCED FUNCTIONS
15
ENGLISH
Changing room temperature
quickly
This mode allows you to cool indoor air quickly in the summer or warm it quickly in the
winter.
1 Press | to turn on the power.
2 Press M.
- is displayed on the display screen.
- In jet cooling mode, strong air blows out
at a temperature of 64 °F (18 °C) for 30
minutes.
- In jet heating mode, strong air blows out
at a temperature of 86 °F (30 °C) for 30
minutes.
Auto Clean operation
In the cooling and dehumidifying operations,
moisture is generated inside the indoor unit.
Use the auto cleaning function to remove
such moisture.
1 Press X.
-
J is displayed on the display screen.
- If you turn off the power, the fan operates for 30 minutes and cleans the inside
of the indoor unit.
NOTE
!
• The Jet function cannot be used in Fan,
Auto, or Auto Changeover modes.
• This function may not be supported,
depending on the model.
NOTE
!
Some buttons cannot be used while the
auto cleaning function is in operation.
ADVANCED FUNCTIONS
16
ADVANCED FUNCTIONS
ENGLISH
Auto Changeover operation
This mode changes the operation mode automatically to maintain the set temperature
at ±4°F (2°C).
1 Press | to turn on the power.
2 Press f until C is displayed on the dis-
play screen.
3 Press
G
or Hto set the desired temperature between 64°F (18°C) and 86°F
(30°C).
4 Press g repeatedly to select the fan
speed.
Auto Operation
In this operation mode, the system is automatically operated by the electronic controls.
1 In this operation mode, the system is
automatically operated by the electronic
controls.
- You can set the desired temperature between 64°F (18°C) and 86°F (30°C) for
Auto Operation mode.
Single zone wall mounted models
NOTE
!
This function may not be supported,
depending on the model.
NOTE
!
This function properly operates when you
use the remote controller matching each
model.
Multi models
ADVANCED FUNCTIONS
17
ENGLISH
* Features may change according to the
type of model.
* Features may change according to the
type of model.
Energy saving cooling mode
This mode minimizes power consumption
during cooling and increases the set temperature to the optimal level for a more comfortable environment.
1 Press | to turn the power on.
2 Press f repeatedly to select the cooling
operation.
- A is displayed on the display screen.
3 Press
P
.
-
G is displayed on the display screen.
Display screen brightness
You can adjust the brightness of the indoor
unit display screen.
1 Press
G
to turn on/off the display
screen.
Operating the air conditioner
without the remote control
You can use the On/Off button of the indoor
unit to operate the air conditioner when the
remote control is unavailable. However, the
fan speed is set to high.
1 Open the front cover.
- Lift up both sides of the cover slightly.
2 Press the On/Off button.
- For cooling and heating models, the operation mode changes based on the room
temperature as indicated in the table
below.
- Cooling-only models are set to 72°F
(22°C).
NOTE
!
This function may not be supported,
depending on the model.
NOTE
!
This function may not be supported,
depending on the model.
NOTE
!
• It is possible that the air conditioner and
remote control may display different
temperatures during this operation.
Room temp.
Set
temp.
Operation
mode
Below 70°F (21°C)
75°F
(24°C)
Heating
operation
Above 70°F (21°C)
and below 75°F
(24°C)
73°F
(23°C)
Dehumidifying
operation
Above 75°F (24°C)
72°F
(22°C)
Cooling
operation
ON/OFF
button
18
ADVANCED FUNCTIONS
ENGLISH
Disabling auto restart
Restarting the air conditioner
automatically
When the air conditioner is turned on again
after a power failure, this function restores
the previous settings. This function is a factory default setting.
1 Open the front cover.
- Lift up both sides of the cover slightly.
2 Press the On/Off button and hold it for 6
seconds.
- The unit will beep twice and the lamp
will blink twice 4 times.
- To re-enable the function, press the On/
Off button and hold it for 6 seconds. The
unit will beep twice and the blue lamp
will blink 4 times.
* Features may change according to the
type of model.
* Features may change according to the
type of model.
NOTE
!
If you press and hold the On/Off button
for 3 – 5 seconds instead of 6 seconds,
the unit will switch to the test operation.
In the test operation, the unit blows out
strong air for cooling for 18 minutes and
then returns to the factory default settings.
ON/OFF
button
ADVANCED FUNCTIONS
19
ENGLISH
NOTE
!
• The Wi-Fi Module (PCRCUDT3), an optional accessory (sold separately), is required to
enable Wi-Fi connectivity.
• For details, refer to the following web site.
- North America : http://us.smartthinq.com
- Canada : http://ca.smartthinq.com
NOTE
!
The Wi-Fi app is only compatible with smart phones and is not available for laptops or tablets.
User Guide
• The mobile App will continue to be updated with design and content improvements. Check for
updates at the Play Store or the App Store.
• Some models of Wi-Fi-capable units will not have every function available through the mobile
App remote control.
• Once the registration mode is set, "Preheating" blinks on the display of the unit.
• You can check Wi-Fi connection on your app or module after finish the registration.
Setting the Environment
1 Search and download ‘LG Smart AC’ in Google play or App store.
2 Become a member in LG Smart AC app or web site.
- North America : http://us.smartthinq.com
- Canada : http://ca.smartthinq.com
3 Please log in and register the product.
- For detail usage guide, refer to the installation manual enclosed in LG Smart AC box.
LG Smart AC (Optional)
LG Smart AC uses a wireless adapter Wi-Fi that allows the user to control the unit with the LG
mobile app.
* Limited to the Wi-Fi applied model
* Wi-Fi is available on single zone wall mounted models.
Minimal Specifications
- Android OS 4.0 or higher at 320 x 480 or higher screen resolution.
- iOS 6 or higher at 960 x 640 or higher screen resolution.
Some phones meeting the above criteria may not operate every function of the unit, but phones
below this minimum specification cannot operate the unit.
Supported wireless routers
CISCO, APPLE, ASUS, D-LINK, TP LINK, TRENDNET, ACTIONTEC, NETGEAR, 2WIRE
Other routers are not supported for the Wi-Fi application.
The above models are optimized for the Wi-Fi service, but any device that does not meet the
minimum system requirements will not be able to run the program.
Clean the product regularly to maintain optimal performance and to prevent possible breakdown.
When not in use
If the air conditioner will not be used for an extended of time, dry the air conditioner to maintain
it in best condition.
1 Dry the air conditioner in Fan mode for 3 to 4 hours and disconnect the power to the unit.
There may be internal damage if moisture is left in components.
2 Before using the air conditioner again, dry the inner components of the air conditioner in Fan
mode for 3 to 4 hours. This will help to remove odor which is generated from moisture.
* Features may change according to the type of model.
20
MAINTENANCE
ENGLISH
[Standard Libero Type] [Artcool Libero Type]
Type Description Interval
Air filter See “Cleaning the air filter.” 2 weeks
3M Filter See ” Cleaning the 3M Filter ” 1 month
Indoor unit
Clean the Indoor unit surface by using a soft, dry
cloth.
Regularly
Replace the remote control batteries. Once a year
Have a professional clean the condensate drain
pipe.
Every 4 months
Have a professional clean the condensate drain
pan.
Once a year
Outdoor unit
Have a professional clean the heat exchanger coils
and the panel vents.
Once a year
Have a professional clean the fan. Once a year
Have a professional clean the condensate drain
pan.
Once a year
Have a professional verify that all the fan assembly is firmly tightened.
Once a year
MAINTENANCE
3M filter
3M Filter
Air filter
Air filter
MAINTENANCE
21
ENGLISH
NOTE
!
• The location and shape of the filters may differ, depending on the model.
• Make sure to clean the heat exchanger coils of the outdoor unit regularly, as dirt collected
in the coils may decrease the operational efficiency or increase energy costs.
CAUTION
• Turn off the power before you perform any maintenance; otherwise it may cause electric
shock.
• Never use water that is hotter than 104°F (40°C) when you clean the filters. It may cause
deformation or discoloration.
• Never use volatile substances when you clean the filters. They may damage the surface
of the product.
• Do not wash the 3M Filter with water, because the filter can be damaged.
!
22
MAINTENANCE
ENGLISH
Cleaning the 3M Filter
1 Turn off the power to the unit.
2 Open the front cover and remove the air
filter (see “Cleaning air filter”).
3 Remove the 3M Filter.
[Standard Libero Type]
[Artcool Libero Type]
4 Use a vacuum cleaner to remove dirt,
Do not wash the 3M Filter with water,
because the filter can be damaged.
NOTE
!
• We suggest changing the 3M Filter
every 6 Months
• The location of the filters may differ,
depending on the model.
• If you need more filters, please contact
the LG service center (refer to the
warranty card)
* Features may change according to the
type of model.
* Features may change according to the
type of model.
4 Clean the filter with a vacuum cleaner or
with warm water.
- If dirt is difficult to remove, wash the filter in lukewarm water with detergent.
5 Dry the filter in the shade.
Cleaning the air filter
Clean the air filter once every 2 weeks or
more if necessary.
1 Turn off the power to the unit.
2 Open the front cover.
- Lift up both sides of the cover slightly.
* Features may change according to the
type of model.
3 Hold the knob of the air filter, lift it up
slightly and remove it from the unit.
TROUBLESHOOTING
23
ENGLISH
Self-diagnosis function
This product has a built-in self-diagnosis function. If an error occurs, the lamp of the indoor unit
will blink in 2 second intervals. If this occurs, contact your local dealer or service center.
Before requesting service
Please check the following before you contact the service center. If the problem persists, contact your local service center.
Problem Possible causes Corrective action
Abnormal operating
conditions.
• There is a burning smell
and a strange sound coming from the unit.
• Turn off the air conditioner, unplug the
power cord, and contact a qualified
HVAC technician.
• Water leaks from the
indoor unit even when the
humidity level is low.
• The power cord is damaged or generating excessive heat.
•
A switch, a circuit breaker
(safety, ground) or a fuse is
not operated properly.
• The unit generates an error
code from its self-diagnosis.
The air conditioner
does not work.
• The air conditioner is
unplugged.
• Check whether the power cord is
plugged into the outlet.
• A fuse is 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 minutes, 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 make sure that the batteries
are inserted correctly in your remote
control.
• If the batteries are placed correctly and
the air- conditioner does not operate,
replace the batteries and try again.
TROUBLESHOOTING
24
TROUBLESHOOTING
ENGLISH
Problem Possible causes Corrective action
The air conditioner
does not generate cool
air.
• Air is not circulating properly.
• Make sure that there are no curtains,
blinds, or pieces of 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 the summer, it may take some time to
cool the indoor air fully. 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 heat generators like electric
ovens or gas burners 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.
• The cooling effect may not be sufficient.
The air conditioner
does not generate
warm air.
Note : Heating is not
available in all models.
•
When Heating Mode is
started, the vane is almost
closed and no air comes
out, even though the outdoor unit is operating.
• This symptom is normal. Please wait
until the unit has prepared enough warm
air to blow through the indoor unit.
• The outdoor unit is in
Defrosting Mode.
• In heating mode, ice/frost is built up on
the coils when the outside temperature
fall down. This function removes a layer
of frost on the coil, and should be complete in approximately 15 minutes.
• Outside temperature is
too low.
• The heating effect may not be sufficient.
It is not possible to
adjust the fan speed.
• The Auto Operation, Jet
Operation, or
Dehumidification
Operation is selected.
• In some operation modes you cannot
adjust the fan speed. Select 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 you cannot
adjust the temperature. Select an operation mode in which you can adjust the
temperature.
TROUBLESHOOTING
25
ENGLISH
Problem Possible causes Corrective action
The air-conditioner
stops during operation.
• The air conditioner is suddenly turn off.
• The Timer Function may have timed out,
which turns the unit off. Check the timer
settings.
• A power failure has
occurred during operation.
• Wait for the power to come back. If you
have the Auto Restart Function enabled,
your unit will resume its last operation
several minutes after the power is
restored.
Indoor unit is still operating even when the
power has been
turned off.
• Auto-Clean mode is being
operated.
• Allow the Auto-Clean to continue as it
removes any remaining moisture inside
the indoor unit. If you do not want this
feature to continue, you can turn the unit
off.
The air outlet on the
indoor unit is discharging mist.
• The cooled air from the
air conditioner makes
mist.
• When the room temperature decreases,
this phenomenon will disappear.
Water leaks from the
outdoor unit.
• In the heating operations,
condensed water drop
from the heat exchanger.
• This symptom need to install drain hose
under the base pan. Contact the installer.
Operating noise or
vibration.
• Clicking sound
Clicking sound can be
heard either when the
unit starts or stops due to
movement of reversing
valve.
• Creaking sound
The plastic parts of the
indoor unit creak when
shrinking or expanding
due to sudden temperature changes.
• Flowing or Blowing sound
This is the flow of refrig-
erant through the air conditioner.
• These are normal symptoms. The noise
will stop.
The indoor unit gives
out odor.
• Odors (such as cigarette
smoke) may be absorbed
into the indoor unit and
discharged with airflow.
• If the smell does not disappear, you
need to wash the filter. If this does not
work, contact a qualified HVAC technician to clean your heat exchanger.
26
TROUBLESHOOTING
ENGLISH
Simple Wired Remote Controller
[PQRCVCL0Q(W)/ PQRCHCA0Q(W)]
LG Programmable Thermostat
[PREMTB10U]
• It is not possible to set time for automatic
on/off timer with the wireless remote control.
• If permitting ACO function, the wired remote
control will change air conditioning/heating
operational mode.
• It is not possible to set time for automatic
on/off timer with the wireless remote control.
Function of wired remote control
LGEU S
LG Electronics, Air conditioning Division
1000 Sylvan Ave., Englewood Cliffs, NJ 07632
LGEC I
LG Electronics Canada Inc.
20 NORELCO DRIVE. NORTH YORK, ONTARIO M9L 2X6.
www.lg.com
USA, press #2 for PTAC, TTW
USA, press #3 for DFS, Multi V
CANADA
888-865-3026
888-865-3026
1-888-LG-Canada
Register your product Online!
LG Customer Information Center
US
1. Please call the installing contractor of your product, as warranty service will be provided by them.
2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026.
CANADA
Service call Number # : (888) LG Canada, 1-888-542-2623
Loading...