LG ARNU073TEC2 User manual

LG
System
Indoor Unit (2 Series)
IMPORTANT
• Please read this owner's manual carefully and thoroughly
before installing and operating your room air conditioner.
• Please retain this owner's manual for future reference after
reading it thoroughly.
OWNER'S MANUAL
Type: Ceiling Cassette - 4Way
ENGLISH FRANÇAIS ESPAÑOL

2Indoor Unit
Ceiling Cassette - 4Way Type Indoor Unit 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.
Safety Precautions.................3
Prior to Operation ..................8
Operating Instructions...........9
Maintenance and Service ....12
Before you Call for Service
............................................14

ENGLISH
Safety Precautions
Owner’s Manual 3
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.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■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.
Safety Precautions

Safety Precautions
4Indoor Unit
■Operation
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 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.

ENGLISH
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.
Gasolin
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.
Safety Precautions
Owner’s Manual 5

Safety Precautions
6Indoor Unit
■Installation
CAUTION
■Operation
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 .
90˚
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.
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.

ENGLISH
Safety Precautions
Owner’s Manual 7
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.
Wax
Thinner
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.

Prior to operation
8Indoor Unit
Prior to Operation
1. Contact an installation specialist for installation.
2. Use a dedicated circuit.
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

Operating Instructions
Owner’s Manual 9
Operating Instructions
Name and function of wired remote controller(Optional)
ENGLISH
1
9
11
12
3
5
6
2
4 10
13
14
7
8
15
•Remote Controller Model:
PQRCUSA0
1. Operation indication screen
2. Set temperature button
3. Wireless remote controller Receiver
• Some kind of product could not receive
wireless signal.
4. Ventilation button
5. Operation mode selection button
6. Sub-function button
7. Function setting button
8. Exit button
9. On/ Off button
10. Room temperature button
11. Fan speed button
12. Air flow button
13. Reservation/ Time setting button
14. Setting/ Cancel button
15. Up, Down, Left, Right

Operating Instructions
10 Indoor Unit
Name and function of wired remote controller(Optional)
Cooling Mode
Auto Mode or Auto Changeover
Dehumidification mode
Heating Mode
Fan Mode
• Cooling Model( ), Heat Pump Model( )
Operation Mode
PQWRCDF0 (Heat pump)
PQWRHDF0 (Cooling only)
13
14
15
16
1
8
9
10
11
12
2
3
4
5
6
7
1. Plasma button (optional)
Used to start or stop the plasma-purification
function.
2. Jet cool button
Speed cooling operates super high fan speed.
3. Operation mode selection button
Used to select the operation mode.
4. Function setting button
Used to set or clear auto clean or smart clean.
5. LCD luminosity button (optional)
Used to adjust LCD luminosity
6. Smart clean button (optional)
Used to start or stop smart clean.
7. Clear all button
Used to clear all timer.
8. Room temperature setting button
Used to select the room temperature.
9. ON/OFF button
Used to turn off/on the unit.
10. Indoor fan speed selection button
Used to select fan speed in four steps low,
medium, high and chaos.
11. Auto swing button
Used to stop or start louver movement and set the
desired up/down airflow direction.
12. Horizontal airflow direction control button
(optional)
Used to set the desired horizontal airflow direction.
13. Timer and time setting button
Used to set the time of starting or stopping and
sleeping operation.
14. Room temperature checking button
Used to check the room temperature.
15. ˚C/˚Fswitch button
Used to switch temperature reading from Celsius to
Fahrenheit.
16. Reset button
Used to reset the remote controller.