LG ARNU12GTRB4 User manual

OWNER’S MANUAL

AIR
CONDITIONER

ENGLISH

Please read this manual carefully before operating your set and retain it for future
reference. Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
This equipment shall be provided with a supply conductor complying with the national
regulation.

CEILING CASSETTE

Original instruction

MFL69460003

Rev.02_061620

Copyright © 2015 - 2020 LG Electronics Inc. All Rights Reserved.

www.lg.com

Table of contents

TABLE OF CONTENTS

3 SAFETY INSTRUCTIONS

7 PRIOR TO OPERATION

7 Preparing for operation

7 Usage

7 Cleaning and maintenance

7 Service

8 OPERATING INSTRUCTIONS

8 Forced Operation

8 Auto Restart Function

9 MAINTENANCE AND SERVICE

9 Ceiling Cassette - 1Way (Grille Type)

10 Ceiling Cassette - 1Way (Panel Type)

11 Ceiling Cassette - 2Way

12 Ceiling Cassette - 4Way

13 Ceiling Cassette - Round

14 Ceiling Concealed Duct & Fresh Air Intake Unit

15 Concealed Floor Standing

16 Art Cool Gallery Series

18 Wall Mounted

19 Convertible

20 Console

21 When the air conditioner is not going to be used for a long time.

21 Operation Tips

22 Before you call for service...

2 Indoor Unit

Safety Instructions

The following symbols are displayed on indoor and outdoor units

Safety Instructions

ENGLISH

Read the precautions in this manual
carefully before operating the unit.

This symbol indicates that the
Operation Manual should be read
carefully.

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or
incorrect operation of the appliance.

The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations that can cause risk.

!

Read the part with this symbol carefully and follow the instructions in order to avoid risk.

!

WARNING

This indicates that the failure to follow the instructions can cause serious injury or death.

!

CAUTION

This indicates that the failure to follow the instructions can cause the minor injury or damage to the
product.

!

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 anAuthorized Service Center.

- Do not disassemble or repair the product. There is risk of fire or electricshock.

• 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 edgesand 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.

This appliance is filled with flammable
refrigerant (for R32)

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

Owner’s Manual 3

Safety Instructions

• Do not install the product on a defective installation stand.

- It may cause injury, accident, or damage to the product.

• Do not turn on the breaker or power under condition that front panel,cabinet, top cover, control box cover are
removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

• Be sure the installation area does not deteriorate with age.

- If the base collapses, the air conditioner could fall with it, causing propertydamage, product failure, and

personal injury.

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or airpurge. Do not compress air or
Oxygen and Do not use Flammable gases.Otherwise, it may cause fire or explosion.

- There is the risk of death, injury, fire or explosion.

• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as
specified for operation. (for R32)

• Ducts connected to an appliance shall not contain an ignition source. (for R32)

• The appliance shall be stored in a room without continuously operating ignition sources (for example: open
flames, an operating gas appliance or an operating electric heater.)

• Keep any required ventilation openings clear of obstruction.

Operation

• Take care to ensure that power cable could not be pulled out or damagedduring 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 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 forventilation before turn the product on.

- Do not use the telephone or turn switches on or off. There is risk ofexplosion or fire.

• If strange sounds, smell or smoke comes from product. Turn the breaker offor 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 hurricanearrives.

- 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 AuthorizedService 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 astove, 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.

4 Indoor Unit

Safety Instructions

• 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 let the air conditioner run for a long time when the humidity is veryhigh and a door or a window is left
open.

- Moisture may condense and wet or damage furniture.

• Do not turn on the breaker or power under condition that front panel,cabinet, top cover, control box cover are
removed or opened.

- Otherwise, it may cause fire, electric shock, explosion or death.

!

CAUTION

Installation

• Do not install the unit in potentially explosive atmospheres.

• Always check for gas (refrigerant) leakage after installation or repair ofproduct.

- 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.

• Use two or more people to lift and transport the product.

- Avoid personal injury.

• Any person who is involved with working on or breaking into arefrigerant circuit should hold a current valid
certificate from an industryaccredited assessment authority, which authorizes their competence tohandle
refrigerants safely in accordance with an industry recognizedassessment specification. (for R32)

• The appliance shall be stored so as to prevent mechanical damage from occurring.

• Do not install the product where the noise or hot air from the outdoor unitcould damage the neighborhoods.

- It may cause a problem for your neighbors.

• If anyone other than a licensed professional installs, repairs, or alters LGElectronics air conditioning products,
the warranty is voided.

- All costs associated with repair are then the full responsibility of theowner.

• 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.

• Contact the authorized service technician for repair or maintenance of this unit.

• Contact the installer for installation of this unit.

• 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.

• The air conditioner should be used only for the applications for which it has been designed : the indoor unit is
not suitable to be installed in areas used for laundry.

ENGLISH

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 precisionrefrigeration 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.

Owner’s Manual 5

Safety Instructions

• 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 ofthe product.

• Do not touch the metal parts of the product when removing the airfilter. They are very sharp!

- There is risk of personal injury.

• Do not step on or put anything 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 ormore often if necessary.

- A dirty filter reduces the efficiency of the air conditioner and couldcause product malfunction or damage.

• Do not insert hands or other objects through the air inlet or outlet whilethe 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.

• Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair
requiring the assistance of other skilled personnel shall be carried out under the supervision of the person
competent in the use of flammable refrigerants. (for R32)

• This appliance is not intended for use by persons (including children)with reduced physical, sensory or mental
capabilities or lack ofexperience and knowledge, unless they have been given supervisionor instruction
concerning use of the appliance by a person responsiblefor their safety.

- Children should be supervised to ensure that they do not play withthe appliance.

• This appliance can be used by children aged from 8 years and above and persons with reduced physical,
sensory or mental capabilities orlack of experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way andunderstand the hazards involved. Children shall
not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.

• Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or immediately after
operation.

- It can cause a burn or frostbite.

• 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

6 Indoor Unit

Prior to Operation

ENGLISH

Prior to Operation

Preparing for operation

1. Contact an installation specialist for installation.

2. Use a dedicated circuit.

Usage

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.

Cleaning and maintenance

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.

Service

For repair and maintenance, contact your authorized service dealer.

Owner’s Manual 7

Operating Instructions

ON/OFF button

ON/OFF button

ON/OFF button

ON/OFF button

Operating Instructions

Forced Operation

Operation procedures when the remote control can't be used.
Press the tact switch (ON/OFF button) for 2 seconds.
If you want to stop operation, press again the tact switch.

<Ceiling Cassette - 1Way> <Ceiling Cassette - 2Way>

<Art Cool Gallery Series> <Console>

* The feature may be changed according to the type of model.

Auto Restart Function

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.

8 Indoor Unit

Maintenance and Service

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Plasma filter

(Optional)

Air filter

Rack

Air inlet

Air outlet

Wired Remote Controller
(Accessory)

Maintenance and Service

Ceiling Cassette - 1Way (Grille Type)

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind the front grille should be checked and
cleaned once in every 2week or more often if necessary.

1. Remove air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

ENGLISH

TT chassis : 6 EA Rack
TU chassis : 4 EA Rack

o

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.

2. Remove Plasma filter (Optional).

o Unscrew 2 screws from Plasma filter

(Optional).

3. Clean dirt from the air filter using a vacuum
cleaner or washing with water.

o If dirt is conspicuous, wash with a neutral

detergent in lukewarm water.

o If hot water (40 °C or more) is used, it may

be deformed.

4. After washing with water, dry well in
the shade.

o

Do not expose the air filter to direct
sunlight or heat from a fire when drying it.

5. Install Plasma filter (Optional) and air filter.

Owner’s Manual 9

Maintenance and Service

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Plasma filter

(Optional)

Air filter

Wired Remote Controller
(Accessory)

Air inlet

Air outlet

Ceiling Cassette - 1Way (Panel Type)

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

Panel, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind the front grille should be checked and
cleaned once in every 2week or more often if necessary.

1. Remove air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

2. Remove Plasma filter (Optional).

o Unscrew 2 screws from Plasma filter

(Optional).

TT chassis : 6 EA Rack
TU chassis : 4 EA Rack

o

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.

10 Indoor Unit

3. Clean dirt from the air filter using a vacuum
cleaner or washing with water.

o If dirt is conspicuous, wash with a neutral

detergent in lukewarm water.

o If hot water (40 °C or more) is used, it may

be deformed.

4. After washing with water, dry well in
the shade.

o

Do not expose the air filter to direct
sunlight or heat from a fire when drying it.

5. Install Plasma filter (Optional) and air filter.

Maintenance and Service

Push Button

Rack

Air Filter

Air Outlet

Wired Remote Controller

(Accessory)

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Ceiling Cassette - 2Way

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind the front grille should be checked and
cleaned once in every 2week or more often if necessary.

1. Remove the Air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

ENGLISH

n 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.

2. Clean dirt from the air filter using a
vacuum cleaner or washing with water.

n

If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.

n

If hot water (40 °C or more) is used, it
may be deformed.

3. After washing with water, dry well in

the shade.

n

Do not expose the air filter to direct
sunlight or heat from a fire when drying
it.

4. Install the air filter.

Owner’s Manual 11

Maintenance and Service

Air Filter

Rack

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Ceiling Cassette - 4Way

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind the front grille should be checked and
cleaned once in every 2week or more often if necessary.

Air Outlet

Air Outlet

Air
Intake

Wired Remote Controller
(Accessory)

Air
Intake

Air Filter

Air Filter

n 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.

12 Indoor Unit

Wired Remote Controller
(Accessory)

1. Remove the Air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

2. Clean dirt from the air filter using a vacuum
cleaner or washing with water.

n

If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.

n

If hot water (40 °C or more) is used, it may be
deformed.

3. After washing with water, dry well in the

shade.

n

Do not expose the air filter to direct
sunlight or heat from a fire when drying it.

4. Install the air filter.

Maintenance and Service

Air Filter

Air

Intake

Air Outlet

Wired Remote Controller

(Accessory)

Hook

Hook

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Ceiling Cassette - Round

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind the front grille should be checked and
cleaned once in every 2week or more often if necessary.

1. Remove the Air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

ENGLISH

n 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.

2. Clean dirt from the air filter using a vacuum
cleaner or washing with water.

n

If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.

n

If hot water (40 °C or more) is used, it may be
deformed.

3. After washing with water, dry well in
the shade.

n

Do not expose the air filter to direct
sunlight or heat from a fire when drying
it.

4. Install the air filter.

Owner’s Manual 13

Maintenance and Service

Air-Filter

Air filters

Air outlet vents

Air outlet vent

Air filters

Air outlet vent

Air filters

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Ceiling Concealed Duct & Fresh Air Intake Unit

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

o

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters behind Indoor unit
(the suction side) should be checked and cleaned once in
every 2week or more often if necessary.

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.

1. Remove the Air filters.

!

CAUTION

When the air filter is to be removed, do not
touch the metal parts of the indoor unit.
It may cause an injury.

* The feature can be changed according to the type of model.

14 Indoor Unit

2. Clean dirt from the air filter using a vacuum
cleaner or washing with water.

n

If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.

n

If hot water (40 °C or more) is used, it may
be deformed.

3. After washing with water, dry well in

the shade.

n

Do not expose the air filter to direct
sunlight or heat from a fire when drying it.

4. Install the air filter.

Maintenance and Service

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Air Outlet

Air Filter

Air Inlet

Concealed Floor Standing

!

CAUTION

Before performing any maintenance, turn off the main power to the system.

o

Grille, Case, and Remote Control

o Turn the system off before cleaning. Clean the unit with a

soft dry cloth. Do not use bleach or abrasives.

NOTE

Power supply must be disconnected before cleaning the
indoor unit.

Air Filter

The air filters bottom Indoor unit
(the suction side) should be checked and cleaned once in
every 2week or more often if necessary.

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.

1. Clean the filter with a vacuum or warm, soapy
water.

• If very dirty, wash with a solution of
detergent in lukewarm water.

• If hot water (40 °C or more) is used,
filter may be deformed.

ENGLISH

2. After washing with water, dry well in the
shade.

3. Re-install the air filter.

Owner’s Manual 15

Maintenance and Service

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Art Cool Gallery Series

!

CAUTION

Before performing any maintenance, turn off the main power to the system, disconnect the circuit
breaker and unplug the power cord.

Clean the unit with a soft dry cloth. Do not use bleach or abrasives.

!

CAUTION

Never use any of these

• Water hotter than 40 °C. It may cause deformation and discoloration.

•

Volatile substances. They may damage the surface of the air conditioner.

Air Filters

The air filters behind the front panel / grill should be checked and
cleaned once in every 2 weeks or more often if necessary. To
remove the filters see the self explanatory diagrams for each model
type. Clean the filters with a vacuum cleaner or warm soapy water. If
dirt is not easily removed, wash with a solution of detergent in luke
warm water. Dry well in shade after washing and reinstall the filters
back in place.

Plasma Filters (Optional)

The plasma filters behind the air filter should be checked and
cleaned once in every 3 months or more often if necessary. To
remove the filters see the self explanatory diagrams for each model
type. Clean the filters with a vacuum cleaner. If it is dirty wash it with
water and dry well in shade an install back in place.

Deodorizer Filters

Remove the deodorizer filters behind the air filter and expose them
in direct sunlight for 2 hours.
And then insert these filters into original position.

Removal of Filters

Art Cool Type :

Pull out the upper section of front panel and lift it up. Take out a filter with front panel held.
With PUSH button pressed, pull out grip to take out a plasma filter. Dry it completely in the shade after cleaning.
Then set a plasma filter and a filter orderly. Put the hook of front panel onto the hanger, in order to close the front panel.

Front panel

Air filter

!

CAUTION

Plasma filter

Air filter

Front panel hook

Hook-hanger

Don't touch this plasma filter within 10 seconds after opening the inlet grille, it may cause an electric shock.

16 Indoor Unit

How to replace picture & photograph

1.

Turn off power and then open
the upper part of front panel.

4.

Take out picture.

2.

Pull out the both links of lower
part of front panel, as
described in the below picture.

5.

Turn upside-down of the
picture and turn over mat, then
take off a protective tape
attached at the mat.

Maintenance and Service

3.

Push and close the top part of
the front panel and then pull
the bottom part of the panel
forward until it is secured.

6.

Place the picture/photograph
between the exited picture and
mat. (Recommended size of a
photo/picture: 450 mm x 450
mm)

ENGLISH

Protective tape

Mat

7.

Cover mat and press down
with hand(s) until contacting
closely.

In case a mat is not used, recommended size of a photo/picture:
522 mm x 522 mm

When powering on after replacing filter and picture,
the front panel doesn't intervene.

8.

Slide the photo graph/drawing
requested under both hanger
parts as following, and fix them.
Press the front panel lightly to
close.

Mat

450 mm

450 mm

9.

Push both links of lower part of
panel inside and fix it. Then
turn on.

522 mm

522 mm

Owner’s Manual 17

Maintenance and Service

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Wall Mounted

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CAUTION

Before performing any maintenance, turn off the main power to the system.

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.

Air Filters

The air filters behind the front panel / grill should be checked and cleaned once in
every 2 weeks or more often if necessary. To remove the filters see the self
explanatory diagrams for each model type. Clean the filters with a vacuum cleaner
or warm soapy water. If dirt is not easily removed, wash with a solution of detergent
in luke warm water. Dry well in shade after washing and reinstall the filters back in
place.

Clean the air filter

Clean the air filter once in every 2week or more if necessary.

1. Turn off the power and unplug the power cord.

2. 5~24 kBtu/h : Hold the knob of air filter, Lift it up slightly.
30~36 kBtu/h : Open the front panel as shown.

5~24 kBtu/h 30~36 kBtu/h

Air filter

Front grille

Front grille

ON/OFF button

Air inlet

Air outlet

ir deflector (Vertical louver

& Horizontal vane)

Signal receiver
Display

On/Off button

Air outlet

Air Filter

Vertical louv er

Signal Receiver

Operation lamp

Horizont al vane

* The feature can be changed according to type of model.

3. 5~24 kBtu/h : Hold the knob of air filter, Lift it up slightly and remove it from the unit.
30~36 kBtu/h : Pull the filter tab slightly forward to remove the air filter.

5~24 kBtu/h 30~36 kBtu/h

* The feature can be changed according to 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.

NOTE

18 Indoor Unit

The air filter can be broken when it is bended.

Maintenance and Service

Air filters

(behind front panel)

Air outlet vent

Vertical louver Horizontal louver

Air inlet vent

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Convertible

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CAUTION

Before performing any maintenance, turn off the main power to the system.

Grille, Case, and Remote Control

o Turn the system off before cleaning.

Clean the unit with a soft dry cloth. Do not use bleach or abrasives.

NOTE

Supply power must be disconnected before cleaning the indoor unit.

o

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.

AIR FILTERS

The air filters behind the front grille should be checked and cleaned once in every 2 weeks or more often if
necessary.

1. Lift the front access panel and pull the filter tab slightly forward to remove the filter.

2. Clean the filter with a vacuum cleaner or warm, soapy water.

• If dirt is conspicuous, wash with a solution of detergent in lukewarm water.

• If hot water (40 °C or more) is used, it may be deformed.

3. After washing with water, dry well in the shade.

4. Re-install the air filter.

ENGLISH

Owner’s Manual 19

Maintenance and Service

Console

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CAUTION

Before performing any maintenance, turn off the main power to the system, disconnect the circuit breaker and
unplug the power cord.

Cleaning of Panel and filters

Clean the unit with a soft dry cloth. Do not use bleach or abrasives.

!

CAUTION

Never use any of these

• Water hotter than 40 °C. It may cause deformation and discoloration.

• Volatile substances. They may damage the surface of the air conditioner.

Air Filters

The air filters behind the front panel / grill should be checked and cleaned once in
every 2 weeks or more often if necessary. To remove the filters see the self explanatory
diagrams below. Clean the filters with a vacuum cleaner or warm soapy water.
If dirt is not easily removed, wash with a solution of detergent in luke warm water.
Dry well in shade after washing and reinstall the filters back in place.

Allergy Filter

Remove the Allergy Filter behind the air filter and expose them in
direct sunlight for 2 hours.
And then insert these filters into original position.

Removal of Grille

1. Open the front grille by pulling forward

2. Then pull out the link of grille from groove in front panel.

3. Then pull out 2 hinges of grille from grooves in front panel.

Removal of Filters

1. Pull down the filter tab slightly to
remove the air filter.

2. Hold the tabs of the frame, and
remove the claws in 4 places.

20 Indoor Unit

Maintenance and Service

ENGLISH

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.

!

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.

Helpful information

The air filters and your electric 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.

Operation Tips

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.

Do not over cool the room.

This is not good for the health
and wastes electricity.

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.

Keep blinds or curtains

closed.

Do not let direct sunshine
enter the room when the air
conditioner is in operation.

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.

Keep the room temperature

uniform.

Adjust the vertical and
horizontal airflow direction to
ensure a uniform temperature
in the room.

Ventilate the room

occasionally.

Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.

Owner’s Manual 21

Maintenance and Service

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NOTICE

Before you call for service...

Troubleshooting Tips! Save time and money!

Check the following points before requesting repairs or service.... If the malfunction persist,

please contact your dealer.

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?

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 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.

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.

It seems that

condensation is

leaking from the air

conditioner.

• Condensation occurs
when the airflow from
the air conditioner
cools the warm room
air.

Crack sound is

heard.

• This sound is generated
by the expansion/
constriction of the front
panel, etc. due to
changes of
temperature.

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.

Remote control

display is faint, or no

display at all.

• Are the batteries
depleted?

• Are the batteries
inserted in the
opposite (+) and (-)
directions?

WATER RESISTANT: The outdoor side of this appliance is WATER RESISTANT.

• Some functions may not be supported, depending on the model.

22 Indoor Unit

The indoor side is not water resistant and should not be exposed to
excess water.