LG UV18AC User manual

LG Convertible-Type
Air Conditioner
OWNER'S MANUAL
LG
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.
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

2Convertible Type Air Conditioner
Convertible 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.
Safety Precautions.................3
Prior to Operation ..................8
Remote Control Operations ..9
Preparation before Operation
............................................11
Opetarion Mode Selection
Button....................................12
Additional Features..............16
Common Problems ans
Soultions...............................22

Safety Precautions
Owner's Manual 3
ENGLISH
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.
WARNING
CAUTION
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.
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.
R
R
R
R

Safety Precautions
4Convertible Type Air Conditioner
■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.
R
R
R
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.
R
R
R
R

Safety Precautions
Owner's Manual 5
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.
R
Gasolin
R
R
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
6Convertible Type Air Conditioner
■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.
R
90˚
R
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.
R
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.

Safety Precautions
Owner's Manual 7
ENGLISH
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
R
R
R
R
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
8Convertible Type Air Conditioner
Preparing for operation
Contact an installation specialist for installation.
Plug in the power plug properly.
Do not use a damaged or non-standard power cord. Only power cords supplied by LG or its counterparts
should be used.
Do not share the same outlet with other appliances
Do not use an extension cord.
Do not start/stop operation by plugging/unplugging the power cord.
6
5
4
3
2
1
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). Usage in such a manner could harm such property.
3
2
1
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.
3
2
1
Service
For repair and maintenance, contact your authorized service dealer.
Prior to Operation

ENGLISH
Remote Control Operations
Owner's Manual 9
Heat pump model
Cooling model
Cooling Operation
Auto Operation
Soft Dry Operation
Heating Operation
(Heat Pump Model)
Cooling Operation
Soft Dry Operation
Auto Operation
(Cooling Model)
Flip-up door(closed)
1
3
2
4
Features of the Remote Control- Door Closed
The Remote Control transmits the signals to the system.
START/STOP BUTTON
Operation starts when this button is
pressed and stops when the button is
pressed again.
OPERATION MODE SELECTION
BUTTON
Used to select the operation mode.
ROOM TEMPERATURE SETTING
BUTTONS
Used to select the room temperature.
INDOOR FAN SPEED SELECTOR
Used to select fan speed in four
steps-low, medium, high, or CHAOS.
4
3
2
1
■Operation Mode
Remote Control Operations

Remote Control Operations
10 Convertible Type Air Conditioner
ON OFF
SET CANCEL
Signal transmitter
Flip-up door(opened)
1
7
2
8
9
10
11
3
4
5
6
Features of the Remote Control- Door Opened
OPERATION DISPLAY
Displays the operation conditions.
START/STOP BUTTON
Operation starts when this button is pressed and
stops when the button is pressed again.
OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping
operation.
TIME SETTING BUTTONS
Used to adjust the time.
TIMER SET/CANCEL BUTTONS
Used to set the timer when the desired time is
obtained and to cancel the Timer operation.
AIR FLOW DIRECTION START/STOP BUTTON
Used to stop or start louver movement and set
the desired up/down airflow direction.
SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or
heating (turns indoor fan on/off).
ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
RESET BUTTON
Used prior to resetting time or after replacing
batteries.
11
10
9
8
7
6
5
4
3
2
1

ENGLISH
Preparation before Operation
Owner's Manual 11
R
•The remote control may be stored mounted on a
wall. •To operate the room air conditioner, aim the remote control at the signal receptor.
•The remote control will operate the air conditioner
at a distance of up to 7m.
Remove the battery cover by pulling it according to the
arrow direction.
Insert new batteries making sure that the (+) and (-) of
battery are installed correctly.
Reattach the cover by sliding it back into position.
•Use 2 AAA(1.5volt) batteries. Do not use rechargeable
batteries.
•Remove the batteries from the remote control if the system
is not going to be used for a long time.
NOTICE
3
2
1
Storage and Tips For Using the Remote Control
How to Insert the Batteries
Preparation before Operation

Opetarion Mode Selection Button
12 Convertible Type Air Conditioner
To raise the temperature
To lower the temperature
Cooling Auto Soft Dry Heating
(Heat pump model only)
Cooling Operation
1
Press the Start/Stop button.
The unit will respond with a beep.
2
To select Cooling Operation, press the Operation Mode Selection
button.
Each time the button is pressed, the operation mode is shifted in
the direction of the arrow.
3
Set the temperature lower than the room temperature. The
temperature can be set within a range of 18°C~30°C in 1°C
increments.
4
You can select the fan speed in four steps-low, medium, high, or
CHAOS. Each time the button is pressed, the fan speed mode is
shifted.
Opetarion Mode Selection Button

ENGLISH
Opetarion Mode Selection Button
Owner's Manual 13
Cooling Auto Soft Dry Heating
(Heat pump model only)
To raise the temperature
To lower the temperature
1
Press the Start/Stop button.
The unit will respond with a beep.
2
To select Auto Operation, press the Operation Mode Selection
button.
Each time the button is pressed, the operation mode is shifted in
the direction of the arrow.
3
The temperature and fan speed are automatically set by the
electronic controls based on the actual room temperature. If you
want to change the set temperature, close the door on the remote
control and press the Room Temperature Setting buttons. The
cooler or warmer you feel, the more times (up to two times) you
should press the button. The set temperature will then be changed
automatically.
During Auto Operation:
❏You cannot switch the indoor fan speed. It has already been set by the Fuzzy rule.
❏If the system is not operating as desired, manually switch to another mode. The system will not
automatically switch from the cooling mode to the heating mode, or from heating to cooling, it must be
done by manually resetting.
❏During Auto Operation, pressing the chaos swing button makes the horizontal louvers swing up and down
automatically. If you want to stop auto-swing, press the chaos swing button again.
Auto Operation

Opetarion Mode Selection Button
14 Convertible Type Air Conditioner
Cooling Auto Soft Dry Heating
(Heat pump model only)
To raise the temperature
To lower the temperature
Soft Dry Operation
1
Press the Start/Stop button.
The unit will respond with a beep.
2
To select Soft Dry operation, press the Operation Mode Selection
button.
Each time the button is pressed, the operation mode is shifted in
the direction of the arrow.
3
Set the temperature lower than the room temperature. The
temperature can be set within a range of 18°C~30°C in 1°C
increments.

ENGLISH
Opetarion Mode Selection Button
Owner's Manual 15
Cooling Auto Soft Dry Heating
(Heat pump model only)
To raise the temperature
To lower the temperature
Heating Operation(Heat pump model only)
1
Press the Start/Stop button.
The unit will respond with a beep.
2
To select Heating operation, press the Operation Mode Selection
button.
Each time the button is pressed, the operation mode is shifted in
the direction of the arrow.
3
Set the temperature higher than the room temperature.
The temperature can be set within a range of 16°C~30°C in 1°C
increments.
4
You can select the fan speed in four steps–low, medium, high, or
CHAOS. Each time the button is pressed, the fan speed mode is
shifted.

Additional Features
16 Convertible Type Air Conditioner
Delay OFFTimer Delay ONTimer Delay OFFand ON Timer Delay ONand OFFTimer
With the unit running
Sleep Mode
Press the Sleep Mode Auto button to set the
time you want the unit to turn off automatically.
The Timer is programmed in one-hour
increments by pressing the Sleep Mode Auto
button 1 to 7 times.
The sleep mode is available for 1 to 7 times. To
alter the time period in steps of 1 hour, press the
Sleep Mode Button while aiming at air
conditioner.
Make sure the Sleep Mode Auto LED lights up.
To cancel the Sleep Mode, press the sleep Mode
Auto button several times until the star
( ) disappears from the operation display.
Note: The Sleep Mode will be operated at low
fan speed (cooling) or medium fan speed (heat
pump only) for quiet sleeping.
IN COOLING MODE: The temperature will
automatically rise by 1°C over the next 30 minutes
and by 2°C in 1 hour for comfortable sleeping.
3
2
1
Setting the Timer
Delay Start/Pre-Set Stop
Time can be set only when you have pressed the
Reset button. If you have just replaced the batteries,
the Reset button should be pressed to reset the time.
Press the Start/Stop button.
Press the Time Setting buttons until the desired
time is set.
Press the Timer SET button.
Note: Check the indicator
for A.M. and P.M.
3
2
1
SET
Make sure the time is set correctly on the
remote control display.
Press the ON/OFF Timer
buttons to turn Timer on or off.
Press the Time Setting
buttons until the desired
time is set.
Press the selected on/off setting by
pressing the Timer SET button while
aiming the remote control at the signal
receptor.
To cancel the setting the timer.
Press the Timer Cancel button while aiming
remote control at the signal receptor.
(The timer lamp on the air conditioner and
the display will go out.)
4
3
2
1
Select one of the following four types of operation.
NOTICE
ON OFF
SET
CANCEL
Additional Features

ENGLISH
Additional Features
Owner's Manual 17
Fan speed is on low. Fan speed is on medium. Fan speed is on high.CHAOS Air
R
R
Vertical Airflow Direction Control
Air Circulation Mode
The up/down airflow (Vertical Airflow) can be
adjusted by using the remote control.
Press the Start/Stop button to start the unit.
Press Chaos Swing button and the louvers will
swing up and down. Press the Chaos Swing
button again to set the vertical louver at the
desired airflow direction.
❏Always use the remote control to adjust the up/down
airflow direction. Manually moving the vertical
airflow direction louver by hand could damage the
air conditioner.
❏When the unit is shut off, the up/down airflow
direction louver will close the air outlet vent of the
system.
To adjust left/right(Horizontal Airflow) direction
CAUTION: Ensure unit is turned off
before adjusting the horizontal airflow
direction control. Carefully open vertical
louver to allow access to the horizontal airflow
direction.
Adjust the left/right airflow direction by hand.
NOTICE
3
2
1
Circulates the room air without cooling or heating.
Press the Start/Stop button. the unit will respond with a beep.
Press the Air Circulation button. Now each time that you press the Indoor Fan Speed Selector, the fan
speed is shifted from low to CHAOS and back to low again.
2
1
❏The fan speed of the indoor unit will automatically cycle depending on the room temperature.
❏CHAOS Air economizes power consumption and prevents overcooling. The fan speed is automatically
changed from medium to low or vice versa, depending on the ambient temperature.
NOTICE

Additional Features
18 Convertible Type Air Conditioner
R
Forced Operation
Auto Restart
When The Front Grille is Opened:
•Operation procedures when the remote control can't be
used.
•Press the Forced Operation button.
•If you want to stop operation, press again.
•When started, the operation conditions are automatically
set as follows:
•During Forced Operation, the initial mode continues.
Heat pump Model
Cooling Model Room Temp. ≥24°C21°C ≤Room Temp. < 24°C Room Temp. < 21°C
Operating mode Cooling Cooling Soft Dry Heating
Indoor FAN Speed
High High Soft Dry Rule High
Setting Temperature 22°C22°C Air Intake Temperature 24°C
In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.
In case the air conditioner does not receive any signal from the remote control, it will turn off automatically
after 7 hours.
Once the front grille is opened for cleaning of the air filters or other reasons, the unit automatically stops
operation for safety: In some 60 Hz models (for cooling only), all memorized functions such as operation
mode, room temperature setting, operation start & stop by timer setting, etc. shall be erased.
To restart the unit, close the front grille and press the Start/Stop button on the remote controller. If
necessary, please reset the reservation functions like operation start & stop and room temperature setting.

ENGLISH
Additional Features
Owner's Manual 19
ROOM TEMP. COOLING ROOM TEMP.
SOFT DRY
SET TEMP. +1°C
SET TEMP. -0.5°C
INDOOR
FAN SETTING
FAN
SPEED
OPERATE
FOR
10 MINS
OPERATE
FOR
10 MINS
LOW COOL
OPERATION
OPERATE
STOP
FOR 7 MINS
STOP
FOR 3 MINS
OPERATING START
COMP.
LOW COOL
OPERATION
1HOUR
1 /2HOUR
1
0.5°C
0.5°C
Room Temp.
High
Speed
CHAOS MODE OPERATION
Operation Details
Soft Dry Operation Mode (Refer to page 14)
When the room temperature is higher than the set temperature, it operates in cooling mode at the set
temperature, the set fan speed (if CHAOS mode, then medium.), and then it will be in automatically switched to
Soft Dry Mode when the room temperature reaches the set temperature.
In Soft Dry Operation, the indoor fan speed is automatically switched to the low.
Natural wind by the CHAOS logic (Refer to page 17)
For more fresh feeling than other fan speed,
press the Indoor Fan Speed Selector and set to
CHAOS mode. In this mode, the wind blows like
natural breeze by automatically changing fan
speed according to the CHAOS logic.
Helpful information
Fan speed and cooling capacity.
The cooling capacity indicated in the specification is the value when
the fan speed is set to high, and the capacity will be lower at low or
medium fan speed.
High fan speed is recommended when you wish to cool the room
quickly.

Additional Features
20 Convertible Type Air Conditioner
Indoor Unit
CAUTION: Before performing any maintenance, turn off the main power to the system.
Grille, Case, and Remote
Control
❏Turn the system off before cleaning. To clean,
wipe with a soft, dry cloth. Do not use bleach or
abrasives.
Supply power must be disconnected before cleaning
the indoor unit.
Air Filters
The air filters behind the front grille 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.
Lift the front access panel and pull the filter tab
slightly forward to remove the filter.
Clean the filter with a vacuum or warm, soapy
water.
•If dirt is conspicuous, wash with a solution of
detergent in lukewarm water.
•If hot water (50°C or more) is used, it may be
deformed.
After washing with water, dry well in the shade.
Re-install the air filter.
4
3
2
1
NOTICE
Vertical louver Horizontal louver
Air filtersAir outlet vent Air inlet vent
B
e
n
z
e
n
e
S
C
O
U
R
I
N
G
C
L
B
A
R
G
E
R
S
I
N
N
E
R
The heat exchanger coils and panel vents of the
outdoor unit should be checked regularly. If clogged
with dirt or soot, the heat exchanger and panel vents
may be professionally steam cleaned.
Dirty or clogged coils will reduce the operating efficiency
of the system and cause higher operating costs.
NOTICE
(Side) (Rear)
Piping
Drain
Hose
Air intake
vents
Air outlet
vents
Outdoor Unit