LG LTNC182QLE1 User manual

P/NO : MFL42763408
www.lg.com
OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : CEILING CASSETTE

2Ceiling Cassette Air Conditioner
Tips for saving energy
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
• 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 or warm indoor air quickly, in a short period of time.
• 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

Owner's Manual 3
Ceiling Cassette Air Conditioner Owner’s Manual
TABLE OF CONTENTS
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
■Staple your receipt to this page in the event you need
it to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use
and maintain your air conditioner properly. Just a little
preventive care on your part can save you a great deal
of time and money over the life of your air conditioner.
You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call
for service at all.
PRECAUTION
•Contact the authorized service technician for
repair or maintenance of this unit.
• Contact the installer for installation of this unit.
• The air conditioner is not intended for use by
young children or invalids without supervision.
• Young children should be supervised to ensure
that they do not play with the air conditioner.
• When the power cord is to be replaced,
replacement work shall be performed by
authorized personnel only using only genuine
replacement parts.
• Installation work must be performed in
accordance with the National Electric Code by
qualified and authorized personnel only.
Tips for saving energy...................2
Safety Precautions.........................4
Prior to Operation ..........................7
Introduction ....................................8
Electrical Safety .............................9
Operating Instructions.................10
Part Description ...........................12
Maintenance and Service ............36
Spec about the unit......................40

4Ceiling Cassette Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness
is classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
■
OUT DOOR UNIT'S FEATURE MAY NOT BE SAME AS THAT OF MANUAL DRWAING.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be sure to follow the instruction.
■Installation
Do not use a defective or
underrated circuit breaker.
Use this appliance on a
dedicated circuit.
• There is risk of fire or electric
shock.
For electrical work, contact
the dealer, seller, a qualified
electrician, or an Authorized
Service Center.
• Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always ground the product.
• There is risk of fire or electric
shock.
Install the panel and the
cover of control box
securely.
• There is risk of fire or electric
shock.
Always install a dedicated
circuit and breaker.
• Improper wiring or installation
may cause fire or electric shock
Use the correctly rated
breaker or fuse.
• There is risk of fire or electric
shock.
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
Do not install, remove, or re-
install the unit by yourself
(customer).
• There is risk of fire, electric
shock, explosion, or injury.
Be cautious when unpacking
and installing the product.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the
condenser and evaporator.
For installation, always contact the
dealer or an Authorized Service Center.
• There is risk of fire, electric
shock, explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air
conditioner could fall with it, causing
property damage, product failure,
and personal injury.

Owner's Manual 5
Safety Precautions
■Operation
Do not plug or unplug the
power supply plug during
operation.
• There is risk of fire or electric
shock.
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electrical
shock.
Do not place a heater or
other appliances near the
power cable.
• There is risk of fire and electric
shock.
Do not let the air conditioner run for a
long time when the humidity is very high
and a door or a window is left open
.
• Moisture may condense and wet
or damage furniture.
Take care to ensure that power
cable could not be pulled out or
damaged during operation.
• There is risk of fire or electric
shock.
Do not place anything on
the power cable.
• There is risk of fire or electric
shock.
Do not allow water to run
into electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not use the product in a
tightly closed space for a
long time.
• Oxygen deficiency could occur.
When flammable gas leaks,
turn off the gas and open a
window for ventilation
before turn the product on.
• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire
If strange sounds, or small or
smoke comes from product. Turn
the breaker off or disconnect the
power supply cable.
• There is risk of electric shock or
fire.
Stop operation and close the window
in storm or hurricane. If possible,
remove the product from the window
before the hurricane arrives.
• There is risk of property damage,
failure of product, or electric shock.
Do not open the inlet grill of the
product during operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)
• There is risk of physical injury,
electric shock, or product failure.
When the product is soaked
(flooded or submerged),
contact an Authorized
Service Center.
• There is risk of fire or electric
shock.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
When the product is not be used for a long
time, disconnect the power supply plug or
turn off the breaker.
• There is risk of product damage or failure, or
unintended operation.
Take care to ensure that nobody could step
on or fall onto the outdoor unit.
• This could result in personal injury and product
damage.

6Ceiling Cassette Air Conditioner
Safety Precautions
■Installation
Always check for gas
(refrigerant) leakage after
installation or repair of product.
• Low refrigerant levels may cause
failure of product.
Install the drain hose to
ensure that water is drained
away properly.
• A bad connection may cause
water leakage.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
Do not install the product where the
noise or hot air from the outdoor unit
could damage the neighborhoods.
• It may cause a problem for your
neighbors.
Use two or more people to
lift and transport the
product.
• Avoid personal injury.
Do not install the product
where it will be exposed to sea
wind (salt spray) directly.
• It may cause corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause product
malfunction or inefficient operation.
■Operation
Do not expose the skin directly to cool air
for long periods of time.
(Don't sit in the draft.)
• This could harm to your health.
Do not use the product for special purposes, such as
preserving foods, works of art, etc. It is a consumer
air conditioner, not a precision refrigeration system.
• There is risk of damage or loss of property.
Do not block the inlet or
outlet of air flow.
• It may cause product failure.
Use a soft cloth to clean.
Do not use harsh
detergents, solvents, etc.
• There is risk of fire, electric shock,
or damage to the plastic parts of
the product.
Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Do not step on or put
anyting on the product.
(outdoor units)
• There is risk of personal injury
and failure of product.
Always insert the filter securely.
Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.
Do not insert hands or other
objects through the air inlet or
outlet while the product is operated.
• There are sharp and moving parts
that could cause personal injury.
Do not drink the water
drained from the product.
• It is not sanitary and could cause
serious health issues.
Use a firm stool or ladder
when cleaning or
maintaining the product.
• Be careful and avoid personal
injury.
Replace the all batteries in the
remote control with new ones
of the same type. Do not mix
old and new batteries or
different types of batteries.
• There is risk of fire or explosion
Do not recharge or disassemble
the batteries. Do not dispose of
batteries in a fire.
• They may burn or explode.
All batteries (whether installed or
attached) should not be exposed
to excess heat like sunlight or
similar source.
• They may burn or explode.
If the liquid from the batteries gets
onto your skin or clothes, wash it
well with clean water. Do not use
the remote if the batteries have
leaked.
• The chemicals in batteries could
cause burns or other health hazards.

Owner's Manual 7
Prior to Operation
Prior to Operation
1. Contact an installation specialist for installation.
2. Plug in the power plug properly.
3. Use a dedicated circuit.
4. Do not use an extension cord.
5. Do not start/stop operation by plugging/unplugging the power cord.
6. If the cord/plug is damaged, replace it with only an authorized replacement part.
1. Being exposed to direct airflow for an extended period of time could be hazardous to
your health. Do not expose occupants, pets, or plants to direct airflow for extended
periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used together
with stoves or other heating devices.
3. Do not use this air conditioner for non-specified special purposes (e.g. preserving
precision devices, food, pets, plants, and art objects). Such usage could damage the
items.
1. Do not touch the metal parts of the unit when removing the filter. Injuries can occur
when handling sharp metal edges.
2. Do not use water to clean inside the air conditioner. Exposure to water can destroy
the insulation, leading to possible electric shock.
3. When cleaning the unit, first make sure that the power and breaker are turned off.
The fan rotates at a very high speed during operation. There is a possibility of injury if
the unit’s power is accidentally triggered on while cleaning inner parts of the unit.
For repair and maintenance, contact your authorized service dealer.
Preparing for operation
Usage
Cleaning and maintenance
Service

8Ceiling Cassette Air Conditioner
Introduction
Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Features
Anti-bacteria
Anti-bacteria
Anti-bacteria
Air Outlet
Air Inlet
Remote
Controller
Symbols used in this Manual
WARNING: This appliance should be installed in accordance with national wiring
regulations. This guide acts as a guide to help to explain product features.

Owner's Manual 9
Electrical Safety
Electrical Safety
WARNING: This appliance must be properly grounded.
To minimize the risk of electric shock, you must alway plug into a grounded oulet.
WARNING: Do not cut or remove the grounding prong from the
power wire.
WARNING: Attaching the adapter ground terminal to the wall
receptacle cover screw does not ground the appliance unless the
cover screw is metal and not insulated, and the wall receptacle is
grounded through the house wiring.
WARNING: If you have any doubt whether the air conditioner is
properly grounded, have the wall receptacle and circuit checked by
a qualified electrician.
Preferred method
Ensure proper ground
exists before use

10 Ceiling Cassette Air Conditioner
Operating Instructions
Operating Instructions
Indoor Unit, Outdoor Unit
Anti-bacteria
Outdoor Unit
Air Intake
(side, rear) Connecting Wire
Drain Hose
Power Wire
Connection Tube
Air Outlet
Vents
Heat pump model: Cassette Type Air Conditioner for cooling and heating
Cooling model: Cassette Type Air Conditioner for cooling
Anti-bacteria
Anti-bacteria
Anti-bacteria
Air Outlet
Air Inlet
Remote
Controller
     
Operation Indication Lamps
Forced Operation : Operation procedures when remote control can't be used.
Defrost Mode : Lights up during defrost mode or hot start operation.
(heat pump model only)
Timer : Lights up during timer operation.
Signal Receptor : Receives the signal from remote control (signal receiving sound:
two short beeps and one long beep)
Filter Sign : Lights up after 2400 hours from the time of first operation.
On/Off : Lights up during system operation.

Owner's Manual 11
Operating Instructions
Wireless Remote Controller (Optional)
This air-conditioner is equipped with wired remote controller basically. But if you want to be available with
wireless remote controller, you pay for it.
1. START/STOP BUTTON
Operation starts when this button is pressed and stops when the
button is pressed again.
2. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
3. ROOM TEMPERATURE
SETTING BUTTONS
Used to select the room temperature.
4. INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps
low, medium, high and CHAOS.
5. JET COOL
Used to start or stop the speed cooling/heating.
(Speed cooling/heating operates super high fan speed.)
6. CHAOS SWING BUTTON
Used to stop or start louver movement and set the desired up/down
airflow direction.
7. ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping operation.
8. TIME SETTING BUTTONS
Used to adjust the time.
9. TIMER SET/CANCEL BUTTON
Used to set the timer when the desired time is obtained and to cancel
the Timer operation.
10. SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
11. AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or heating.
12. ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
13. PLASMA(OPTIONAL)
Used to start or stop the plasma-purification function.
14. RESET BUTTON
Initialize remote controller.
15. 2nd F Button
Used prior to using modes printed in blue at the bottom of buttons.
CAUTION: of handling the Remote Controller
• Aim at the signal receiver on the wired remote controller so as to operate.
• The remote control signal can be received at a distance of up to about 7m.
• Be sure that there are no obstructions between the remote controller and the signal receptor.
• Do not drop or throw the remote controller.
• Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or
any other heat source.
• Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal
operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)
❈The wireless remote controller does not operate the swirl mode and super low fan speed.
AUTO CLEAN
ON OFF
CANCEL
SET
Flip-up door
(opened)
Signal transmitter
51
3
10
9
12
15
6
4
2
7
11
8
13
14

12 Ceiling Cassette Air Conditioner
Part Description
Name and Function of Remote Controller(PQRCVSL0QW)
OPERATION INDICATION
SCREEN
SET TEMPERATURE BUTTON
FAN SPEED BUTTON
ON/OFF BUTTON
OPRATION MODE SELECTION
BUTTON
WIRELESS REMOTE
CONTROLLER RECEIVER
• Some products don't receive the
wireless signals.
AIR FLOW BUTTON
SUBFUNCTION BUTTON
FUNCTION SETTING BUTTON
VENTILATION BUTTON
RESERVATION
UP,DOWN,LEFT,RIGHT BUTTON
• To check the indoor temperature,
press button.
ROOM TEMPERATURE BUTTON
SETTING/CANCEL BUTTON
EXIT BUTTON
1
4
5
7
11
10
9
82
3
6
13
12
Please attach the inform label inside of the door.
Please choose proper language depend on your
country.
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Connection Cable
(1EA, 10m)
Screw
(4 EA)
Owner's / Installation
manual Inform label
(8EA-8Languages)
Accessory
❊Some functions may not be operated and displayed depending on the product type.
Part Description

Owner's Manual 13
Part Description
Standard Operation - Standard Cooling
Standard Operation - Power Cooling
Press button to turn on the
indoor.
1
Press button to select
Cooling operation mode.
2
Adjust the desired temperature
by pressing buttons.
Press button to check the
Room temperature.
When setting the desired
temperature higher than room
temperature, only ventilation
wind is blow out instead of
cooling wind.
3
❈ Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)
It cools the room by comfortable and clean wind.
Press button to trun on the
indoor.
1
Press button to select
cooling operation mode.
2
Press button continuously
until 'Po' displayed.
3
It makes the room cool using pleasant and fresh air quickly
What is Power Cooling?
• Desired temperature: Po (actually 18°C)
• Wind flow: power wind
• Wind direction: fix to air-cooling position
❈ Partial product has no power air-cooling function.
It make room temperature
drop fast by running
}

14 Ceiling Cassette Air Conditioner
Part Description
Standard Operation - Heating Mode(Heat pump model only)
Standard Operation - Dehumidification Mode
It supplies warm wind to the indoor
Press button to turn on the
indoor.
1
Press button to select
Heating mode.
(To check the indoor temperature,
press the room temperature button.)
2
Adjust the desired temperature
by pressing buttons.
When setting the desired
temperature lower than room
temperature, there is only
ventilation wind.
3
•Heating drive only operates at the cooling and heating model.
•Heating doesn't operate at cooling exclusive model.
Press button to turn on the
indoor.
1
Press button to select
Dehumidification mode.
The temperature setting can not be
adjusted during operation this mode.
2
Press the button to select
airflow rate feeble → weak →
medium → strong → automatic.
(The initial wind powerfulness of
humidity removal drive is 'weak'.)
3
It removes humidity while air-cooling weakly.
•In rainy season or high humidity climate, it is possible to operate simultaneously dehumidifier and
cooling mode to remove humidity effectively.
•The menu item of wind powerfulness might not be partially selected according to the product.

Owner's Manual 15
Part Description
Press button to turn on the
indoor.
1
Press button to select
Artificial intelligence Mode.
2
You can adjust
the temperature
as the picture on
the right for
cooling and
heating model.
3
For the case of
cooling exclusive,
as the picture on
the right, you can
adjust the
temperature from
hot to cold, from
"-2" to "2" based
on "00".
4
When cold
When cool
When appropriate
When warm
When hot
During operating Auto Operation mode:
• We can use the FAN SPEED button
• We can change manually to other operation mode.
Standard Operation - Auto Operation Mode

16 Ceiling Cassette Air Conditioner
Part Description
Press button to turn on the
indoor.
1
Press button to select Fan
Mode.
2
Every time pressing button, you
can select wind flow in order of
feeble →weak →medium →strong
→automatic.
3
It blows the air as it is in the indoor, not the cold wind.
•Ventilation drive does not release cool wind but general fan
•Because it releases the wind that has no temperature difference from the room, it functions to
circulate the inside air.
•The menu item of wind powerfulness might not be partially selected according to the product.
Standard Operation - Fan Mode

Owner's Manual 17
Part Description
Standard Operation - Temperature Setting/Room Temperature Check
We can simply adjust the desired
temperature.
• Press the buttons to adjust the
desired temperature.
: Increase 1˚C or 2˚F per one time
pressing
: Decrease 1˚C or 2˚F per one time
pressing
Cooling operation:
- The cooling mode doesn't work if
desired temperature is higher than room
temperature Please lower the desired
temperature.
Heating operation:
- The heating mode doesn't work if desired
temperature is lower than room
temperature Please increase the desired
temperature.
1
Whenever press button, the room
temperature will be displayed within 5
seconds.
After 5 seconds, it turns to display the
desired temperature.
Because of location of remote controller,
the real room temperature and the this
displayed value can be different
1
Temperature Setting
Room Temperature Check
• For air-cooling drive, from 18°C to 30°C, and for heating drive, from 16°C to 30°C, you can select
desired temperature.
• 5°C is proper for the difference between room and outside temperature.
• Room temp: Indicate the current room
temperature.
• Set temp: Indicate the temperature that user
want to set.
❈ Depend on what kind of controller, the desired
temperature can be adjusted at 0.5˚C or 1˚F.

18 Ceiling Cassette Air Conditioner
Part Description
Please setup desired wind
powerfulness by wind powerfulness
button.
• Every time you press wind
powerfulness, you can select the wind flow in
order of ‘feeble →weak →weak medium →
medium →medium strong →strong →power
→automatic’.
• The menu item might not be partially
selected according to product function.
• Please refer to product manual for product’s
detailed function.
1
Please set desired wind direction
by pressing button.
You can select wind direction of
(comfortable wind →Up/Down and
Right/Left →Right/Left →
Up/Down) by pressing button.
Partial item of wind directions might not be
selected according to product function.
Please refer to product manual for product’s
detailed function.
1
Wind powerfulness : You can simply adjust
desired wind powerfulness.
Wind direction : You can simply adjust desired
wind direction.
Standard Operation - Airflow Setting

Owner's Manual 19
Part Description
It is the function to directly or indirectly control wind direction by body perception sensor.
The icon of direct/indirect wind
blinks on the display, and then, if
pressing button, direct/indirect
wind icon is fixed and the function
is setup.
2
1
Please press button.
The method to setup direct/indirect wind
3
If pressing button, it gets out of
setup mode.
direct wind
indirect wind
Sub function - Direct Wind / Indirect Wind

20 Ceiling Cassette Air Conditioner
Part Description
Our products provide variety of air volumes and capacities according to the selection of ceiling heights.
Function Code Thermistor setting
Select ceiling height value by pressing
button. (01:Low, 02:Standard,
03:High, 04:Very high)
3
Press button to save.
4
5
If moving to ceiling height selection menu by
pressing button, it indicates as picture
below.
2
If pressing button long for 3
seconds, it enters into remote
controller setter setup mode.
- If pressing once shortly, it enters
into user setup mode. Please press
more than 3 seconds for sure.
1
Pressing button will exit settings mode.
❈After setup, it automatically gets out of
setup mode if there is no button input for
25 seconds.
❈When exiting without pressing set button,
the manipulated value is not reflected.
Function setting -Ceiling Height Selection
Cooling/Heating performance is enhanced with relation to Ceiling height.
• The highest cooling heating performance and efficiency are provide at Very high.
( Some noise may be generated according to the level height setting.)
<Ceiling Height Selection Table>
Ceiling Height Level Description
05:01 Low Decrease the indoor airflow rate 1 step from standard level
05:02 Standard Set the indoor airflow rate as standard level
05:03 High Increase indoor airflow rate 1 step from standard level
05:04 Very high Increase indoor airflow rate 2 steps from standard level