LG ABNQ18GM1A2 User manual

CEILING CONCEALED DUCT
Please read this manual carefully before operating
your set and retain it for future reference.
OWNER’S MANUAL
AIR
CONDITIONER
MFL67902906
Rev.00_041619
www.lg.com
Copyright © 2014 - 2019 LG Electronics Inc. All Rights Reserved.
ENGLISH ESPAÑOL
PORTUGUÊS

2TIPS FOR SAVING ENERGY
ENGLISH
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

IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and 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.
• The product shall be installed according to the Wiring regulations of the corresponding
country.
• 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 carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
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.
• 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.
!
!
!
3
ENGLISH

4IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
Operation
• 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 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 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.

IMPORTANT SAFETY INSTRUCTIONS
CAUTION
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.
• 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.
• If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if
the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.
!
5
ENGLISH

6TABLE OF CONTENTS
ENGLISH
TABLE OF CONTENTS
2TIPS FOR SAVING ENERGY
3IMPORTANT SAFETY INSTRUCTIONS
7BEFORE USE
7Preparing for operation
7Usage
7Cleaning and maintenance
7Service
8PRODUCT INTRODUCTION
8Name and function of parts
9Wired Remote Controller
10 Wireless Remote Controller
(Accessory)
11 OPERATING INSTRUCTIONS
11 Standard Operation - Standard Cooling
12 Standard Operation - Dehumidification Mode
13 Standard Operation - Auto Operation Mode
14 Standard Operation - Fan Mode
15 Function Setting - Fan Speed Selection
16 Standard Operation - Temperature Setting/Room Temperature Check
17 Function setting - Child Lock
18 MAINTENANCE AND SERVICE
19 When the air conditioner is not going to be used for a long time.
19 Operation Tips!
20 Troubleshooting Tips!Save time and money!

BEFORE USE 7
ENGLISH
Preparing for operation
- Contact an installation specialist for installation.
- Use a dedicated circuit.
Usage
- 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.
- Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves
or other heating devices.
- 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.
Cleaning and maintenance
- Do not touch the metal parts of the unit when removing the filter. Injuries can occur when
handling sharp metal edges.
- Do not use water to clean inside the air conditioner. Exposure to water can destroy the
insulation, leading to possible electric shock.
- 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.
Service
For repair and maintenance, contact your authorized service dealer.
BEFORE USE

8PRODUCT INTRODUCTION
ENGLISH
Name and function of parts
1Indoor unit
2Outdoor unit
3Remote controller
4Inlet air
5Discharge air
6Refrigerant piping, connection electric wire
7Drain pipe
8Ground wire
wire to ground outdoor unit to prevent electrical shocks.
PRODUCT INTRODUCTION
Air inlet vents
Remote
Controller
3
4
5
1
2
8
67
Air outlet
Air outlet
vents
vents
Air outlet
vents

PRODUCT INTRODUCTION 9
ENGLISH
Wired Remote Controller
TEMP
FA N
SPEED
OPER
MODE
2
3
4
5
1
* Some functions may not be operated and displayed depending on the product type.
1Operation Display Panel
2Temperature Control Button
3Fan Speed Button
4On/Off Button
5Operation Mode select Button
NOTE
!
- Display temperature can be different from actual room temperature if the remote controller
is installed at the place where sun-rays are falling directly or the place nearby heat source.
- The actual product can be different from above contents depending upon model type.
- When using simultaneous operation system, whenever press remote controller button,
system will approximately operate after 1~2 minutes.

10 PRODUCT INTRODUCTION
ENGLISH
PQWRCQ0FDB
NOTE
!
- For more details refer to the Wireless Remote Control Accessory manual.
- The actual product can be different from above contents depending upon model type.
- The wireless remote controller does not operate When using simultaneous operation system.
CAUTION
!
- 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 7 m.
- 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)
Wireless Remote Controller (Accessory)
This air-conditioner is equipped with wired remote controller basically. But if you want to be
available with wireless remote controller, you pay for it.

OPERATING INSTRUCTIONS 11
ENGLISH
Standard Operation - Standard Cooling
It cools the room by comfortable and clean wind.
TEMP
FAN
SPEED
OPER
MODE
Cooling operation will begin if you press
the button.
1
If you press the button, the cooling
operation will stop.
4
If you Press the mode button during the
operation, the operation mode will be
changed in the order of cooling,
dry(dehumidification),heating,auto-operation
and fan operation. If the product is a
cooling-only model, the operation mode will
be changed in the order of cooling,
dry(dehumidification), auto-operation and
fan operation.
3
Press the temperature button and set the
desired room temperature lower than the
current room temperature.
-
Setting temp range : 18 °C~30 °C (64 °F~86
°F)
- If the desired temperature is set higher
than the current room temperature, the
cooling function will not begin and just the
blowing operation will continue.
2
TEMP
A click of the button will increase the
desired temperature by 1 °C or 2 °F.
A click of the button will decrease the
desired temperature by 1 °C or 2 °F.
OPERATING INSTRUCTIONS

12
ENGLISH
OPERATING INSTRUCTIONS
Standard Operation - Dehumidification Mode
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.
TEMP
FAN
SPEED
OPER
MODE
After operating the product by pressing
the button, set up the dry
(Dehumidification) by pressing the
button.
1
When the dry operation is selected, “dh” will
be shown on the display window as shown on
the left side.
- The temperature setting can not be
adjusted during operation this mode.
2
Press the button to select airflow rate
[LO→MED→HI].
- The initial wind powerfulness of humidity
removal drive is ‘weak’.
3
OPER
MODE
FAN
SPEED

13
ENGLISH
OPERATING INSTRUCTIONS
Standard Operation - Auto Operation Mode
TEMP
FAN
SPEED
OPER
MODE
After operating the product by pressing
the button, set up the auto operation
by pressing the button.
1
“Auto Operation Mode”
For the products with the exclusive purpose
of cooling only, “AI” is indicated at the
temperature display section.
3
When desired the set temperature is lower than the
room temperature during the auto operation
=> Cooling operation
- Setting temp range : 18 °C~30 °C (64 °F~86 °F)
2
OPER
MODE
When cold
When cool
When appropriate
When warm
When hot

14 OPERATING INSTRUCTIONS
ENGLISH
Standard Operation - Fan Mode
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.
TEMP
FAN
SPEED
OPER
MODE
After operating the product by pressing
the button, set up the fan operation by
pressing the button.
1
When the dry operation is selected, “Fn” will
be shown on the display window as shown on
the left side.
- The temperature setting can not be
adjusted during operation this mode.
2
Press the button to select airflow rate
[LO→MED→HI].
When running ventilation, compressor of
AHU doesn’t work.
3
OPER
MODE
FAN
SPEED

OPERATING INSTRUCTIONS 15
ENGLISH
Function Setting - Fan Speed Selection
It blows the air as it is in the indoor, not the cold wind.
TEMP
FAN
SPEED
OPER
MODE
Select the proper fan speed which you want
by pressing the button on the remote
controller.
- If you press the button, the fan speed
will change in the order of [LO→MED→HI].
- The initial fan speed is “Hi”.
- If the product is not compatible with the
fan speed control, it will not function as per
your selection.
1
FAN
SPEED
FAN
SPEED
Fan Speed Selection in Cooling Operation
Fan Speed Selection in Heating, Dry, Fan,
Auto-Operation

16 OPERATING INSTRUCTIONS
ENGLISH
Standard Operation - 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.
TEMP
FAN
SPEED
OPER
MODE
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.
- 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.
1
1
Temperature Setting
Room Temperature Check
When prssing the button of the remote
controller adjustment section for approx. 3
seconds, the room temperature will be
indicated for about 5 seconds
before resuming to the previous display
panel.
In the case of the room temperature display,
the room temperature can be different in
accordance with the setting of the remote
controller’s room temperature
detection selection.
FAN
SPEED

OPERATING INSTRUCTIONS 17
ENGLISH
Function setting - Child Lock
It is the function to use preventing children or others from careless using.
TEMP
FAN
SPEED
OPER
MODE
During the operation, when pressing the
button and button for approx. 3
seconds, the ‘Child Lock’ function can be
used.
-
At the time of initial setting of the ‘Child
Lock’, the ‘CL’ will be indicated approx. 3
seconds at the temperature display section
before resuming to the previous mode.
After the setting of the ‘CL’, if another button
is setup, the button can not be recognized as
the ‘CL’ is indicated at the temperature
display section for approx. 3 seconds.
1
If the ‘CL’ function is wanted to be used
under the operation standby state, press the
button and button for approx.
3 seconds under the standby mode state
and the system will be the ‘CL’ state.
2
As for the releasing method, when pressing
the Button and button for approx.
3 seconds, the ‘CL’ function can be released.
3
FAN
SPEED
FAN
SPEED
FAN
SPEED

18 MAINTENANCE AND SERVICE
ENGLISH
Air Filters
Grille, Case and Remote Control
- Turn the system off before cleanining. To
clean, wipe with a soft, dry cloth. Do not use
bleach or abrasives.
The air filters behind the air inlet vent should
be checked and cleaned once every 2 weeks
or more often if neccessary.
- Never use any of the followings:
Water hotter than 40 °C.
Could cause deformation and or
discoloration.
Volatile substances.
Could damage the surfaces of the air
conditioner.
- Remove the air filters.
Take hold of the tab and pull slightly forward
to remove the filter.
- Clean dirt from the air filter using a vacuum
cleaner or washing with water.
If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.
If hot water (40 °C or more) is used, it may
be deformed.
- After washing with water, dry well in the
shade.
Do not expose the air filter to direct sunlight
or heat from a fire when drying it.
- Install the air filter.
CAUTION
!
Before performing any maintenance, turn
off the main power to the system.
CAUTION
!
When the air filter is to be removed, do
not touch the metal parts of the indoor
unit. It may cause an injury.
B
e
n
z
e
n
e
S
C
O
U
R
I
N
C
L
B
A
R
G
E
S
I
N
N
E
R
Air filters
Air outlet vents
Air filters
Air outlet vents
MAINTENANCE AND SERVICE
NOTE
!
- Power supply must be disconnected
before cleaning the indoor unit.

MAINTENANCE AND SERVICE 19
ENGLISH
Helpful information
The air filters and your electiric bill.
If the air filters become clogged with dust, the
cooling capacity will drop, and 6 % of the
electricity used to operate the air conditioner
will be wasted.
When the air conditioner is to be
used again.
- Clean the air filter and install it in the indoor
unit.
- Check that the air inlet and outlet of the
indoor/outdoor unit are not blocked.
- Check that the ground wire is connected
correctly. It may be connect to the indoor
unit side.
CAUTION
!
Turn off the breaker when the air
conditioner is not going to be used for a
long time.
Dirt may collect and may cause a fire.
Do not overcool the room.
This is not good for the health
and wastes electricity.
Keep blinds or curtains closed.
Do not let direct sunshine
enter the room when the air
conditioner is in operation.
Keep the room temperature
uniform.
Adjust the vertical and
horizontal airflow direction to
ensure a uniform temperature
in the room.
Make sure that the doors
and windows are shut tight.
Avoid opening doors and
windows as much as possible
to keep the cool air in the
room.
Clean the air filter regularly.
Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.
Ventilate the room
occasionally.
Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.
Operation Tips!
When the air conditioner is not
going to be used for a long time.
When it is not going to be used for
a long time.
- Operate the air conditioner at the following
settings for 2 to 3 hours.
Type of operation: Fan operation mode.
This will dry out the internal mechanisms.
- Turn off the breaker.

20 MAINTENANCE AND SERVICE
ENGLISH
The air conditioner
does not operate.
- Have you made a
mistake in timer
operation?
- Has the fuse blown
or has the circuit
breaker been
tripped?
The room has a
peculiar odor.
- Check that this is not
a damp smell
exuded by the walls,
carpet, furniture or
cloth items in the
room.
It seems that
condensation is
leaking from the air
conditioner.
- Condensation occurs
when the airflow
from the air
conditioner cools the
warm room air.
Air conditioner does
not operate for about
3 minutes when
restart.
- This is the protector
of the mechanism.
- Wait about three
minutes and
operation will begin.
Does not cool or heat
effectively.
- Is the air filter dirty?
See air filter cleaning
instructions.
- The room may have
been very hot when
the room air
conditioner was first
turned on. Allow
time for it to cool
down.
- Has the temperature
been set incorrectly?
- Are the indoor unit's
air inlet or outlet
vents obstructed?
The air conditioner
operation is noisy.
- For a noise that
sounds like water
flowing.
* This is the sound
of freon flowing
inside the air
conditioner unit.
- For a noise that
sounds like the
compressed air
releasing into
atmosphere.
*
This is the sound of
the dehumidifying
water being
processed inside
the air conditioning
unit.
Crack sound is heard.
- This sound is
generated by the
expansion/
constriction of the
front panel, etc. due
to changes of
temperature.
Remote control
display is faint, or no
display at all.
- Are the batteries
depleted?
- Are the batteries
inserted in the
opposite (+) and (-)
directions?
Filter sign lamp (LED)
is ON.
- Cleaning the filter,
press the Timer
button and ◀button
of wired remote
controller at the
same time for 3 sec.
Troubleshooting Tips! Save time and money!
Check the following points before requesting repairs or service.... If the malfunction persist,
please contact your dealer.
NOTE
!
WATER RESISTANT : The outdoor side of this appliance is WATER RESISTANT.
The indoor side is not water resistant and should not be exposed to
excess water.