LG CB18 Manuale utente

OWNER'S MANUAL

AIR CONDITIONER

Read this owner’s manual thoroughly before operating the

appliance and keep it handy for reference at all times.

ENGLISH

MFL72075602

Rev.00_092023

www.lg.com

TABLE OF CONTENTS

This manual may contain images or

content that may be different from the

model you purchased.

This manual is subject to revision by the

manufacturer.

SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USE ....................................................4

Safety Messages...................................................................................................4

Notes for Flammable Refrigerant ......................................................................5

WARNING INSTRUCTIONS .........................................................................5

Technical Safety....................................................................................................5

Installation ............................................................................................................6

Operation ..............................................................................................................8

Maintenance .........................................................................................................9

Refrigerant............................................................................................................9

CAUTION INSTRUCTIONS ........................................................................ 10

Installation ..........................................................................................................11

Operation ............................................................................................................11

Maintenance .......................................................................................................12

OPERATION

Before Use ................................................................................................. 13

Notes for Operation...........................................................................................13

Suggestions for Energy Saving.........................................................................13

Product Overview.....................................................................................14

Ceiling Concealed Duct......................................................................................14

Using the Appliance with Remote Control......................................................15

Wired Remote Control Overview............................................................ 16

Wired Remote Control.......................................................................................16

Operating Mode .......................................................................................18

Cooling, Heating, Dehumidification, Auto, Fan Mode...................................18

Power Mode........................................................................................................22

Adjusting the Fan Speed ...................................................................................22

Changing Temperature in Auto Mode.............................................................23

Checking Room Temperature...........................................................................24

Additional Functions................................................................................24

Air Purification (On Some Models)...................................................................24

Child Lock............................................................................................................25

Filter Sign Clear ..................................................................................................26

Changing Current Time.....................................................................................27

Reservation ...............................................................................................27

Simple Reservation ............................................................................................27

Sleep Reservation...............................................................................................28

On Reservation...................................................................................................29

Off Reservation...................................................................................................30

Holiday Reservation...........................................................................................30

Weekly Reservation............................................................................................31

MAINTENANCE

Cleaning.....................................................................................................34

Cleaning Interval................................................................................................34

Cleaning the Air Filter ........................................................................................35

Tips for Maintenance ...............................................................................35

Before Long Periods of Disuse .........................................................................35

After Long Periods of Disuse ............................................................................36

TROUBLESHOOTING

Before Calling for Service........................................................................37

Operation ............................................................................................................37

Performance .......................................................................................................40

Calling for Service .................................................................................... 41

Situations in which Calling for Service is Necessary......................................41

4

SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USE

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.

Safety Messages

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.

5

SAFETY INSTRUCTIONS

ENGLISH

Notes for Flammable Refrigerant

The following symbols are displayed on units.

WARNING INSTRUCTIONS

WARNING

• To reduce the risk of explosion, fire, death, electric shock, injury or

scalding to persons when using this product, follow basic

precautions, including the following:

Technical Safety

• This appliance can be used by children aged from 8 years and above

and persons with reduced physical, sensory or mental capabilities or

lack of experience and knowledge if they have been given supervision

or instruction concerning use of the appliance in a safe way and

understand the hazards involved. Children shall not play with the

appliance. Cleaning and user maintenance shall not be made by

children without supervision.

• This appliance is not intended for use by persons (including children)

with reduced physical, sensory or mental capabilities, or lack of

experience and knowledge, unless they have been given supervision

or instruction concerning use of the appliance by a person

This symbol indicates that this appliance uses a flammable

refrigerant. If the refrigerant is leaked and exposed to an

external ignition source, there is a risk of fire.

This symbol indicates that the Owner's Manual should be

read carefully.

This symbol indicates that service personnel should be

handling this equipment with reference to the Installation

Manual.

This symbol indicates that information is available in the

Owner's Manual or Installation Manual.

6

SAFETY INSTRUCTIONS

responsible for their safety. Children should be supervised to ensure

that they do not play with the appliance.

• Installation or repairs made by unauthorized persons can pose

hazards to you and others.

• The information contained in the manual is intended for use by a

qualified service technician who is familiar with the safety procedures

and equipped with the proper tools and test instruments.

• Failure to read and follow all instructions in this manual can result in

equipment malfunction, property damage, personal injury and/or

death.

• The refrigerant and insulation blowing gas used in the appliance

require special disposal procedures. Consult a service agent or a

similarly qualified person before disposing of them.

• When the power cord is to be replaced, the replacement work shall

be performed by authorized personnel using only genuine

replacement parts.

• If the supply cord is damaged, it must be replaced by the

manufacturer or its service agents or a similarly qualified person in

order to avoid a hazard.

• The appliance shall be installed in accordance with national wiring

regulations.

• This appliance must be properly grounded.

• Do not cut or remove the grounding prong from the power plug.

• Attaching the earth wire to the power outlet cover screw does not

ground the appliance unless the cover screw is metal, uninsulated,

and the power outlet is grounded through house wiring.

• If you have any doubt whether the air conditioner is properly

grounded, have the power outlet and circuit checked by a qualified

electrician.

Installation

• Contact an authorized service centre when installing or relocating the

air conditioner.

7

SAFETY INSTRUCTIONS

ENGLISH

• Contact the dealer, seller, qualified electrician or authorized service

centre for cleaning or maintenance the air conditioner.

• Do not install, remove, or re-install the unit by yourself (customer).

Installation or repairs done by unauthorized persons can pose

hazards to you and others.

• For electrical work, contact the dealer, seller, a qualified electrician or

an authorized service centre.

• Do not attempt to do electrical work or grounding work unless you

are licensed to do so. Consult with the dealer for electrical work and

grounding work.

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

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

• Be sure to only use accessories made by LG which are specifically

designed for use with the equipment and have them installed by a

professional.

• Never install the outdoor unit on a moving base or a place from

where it can fall down.

• Do not install the unit in potentially explosive atmospheres.

• Do not install the air conditioner in a place where flammable liquids

or gases such as gasoline, propane or paint thinner are stored.

• Install the panel and the cover of the control box safely.

• Install a dedicated electric outlet and earth leakage breaker before

using the appliance.

• Use a standard circuit breaker and fuse that conform to the rating of

the air conditioner.

• Do not use a multiple socket, extension power cable or adapter with

this appliance.

• The indoor/outdoor wiring connections must be secured tightly, and

the cable should be routed properly so that there is no force pulling

the cable from the connection terminals. Improper or loose

connections can generate heat or cause a fire.

• Do not connect the ground wire to a gas pipe, a lightning rod, or a

telephone ground wire.

8

SAFETY INSTRUCTIONS

• Use non-flammable gas (nitrogen) to check for leaks and to purge air;

using compressed air or flammable gas may cause fire or explosion.

Operation

• Do not modify or extend the power cable. Scratches or peeling

insulation on the power cables may result in fire or electric shock, and

the cables should be replaced.

• Make sure that the power cable is neither dirty, loose, nor broken.

• Do not place any objects on the power cable.

• Take care to ensure that the power cable could not be pulled out or

damaged during operation.

• Never touch, operate, or repair the air conditioner with wet hands.

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

while the air conditioner is operating.

• Make sure that nobody, especially children, climbs on or hits the

outdoor unit.

• Be sure to use only those parts listed in the service parts list. Never

attempt to modify the equipment.

• Do not touch the refrigerant pipe, water pipe or any internal parts

while the unit is operating or immediately after operation.

• Do not leave flammable substances such as gasoline, benzene, or

thinner near the air conditioner.

• Do not use the air conditioner for an extended period of time in a

small place without proper ventilation.

• Be sure to ventilate sufficiently when the air conditioner and a

heating appliance such as a heater are used simultaneously.

- There is the possibility of oxygen deficiency.

• Do not block the inlet or outlet airflow.

• Cut off the power supply if there is any noise, smell, or smoke coming

from the air conditioner.

• Contact an authorized service centre if the air conditioner is

submerged by flood waters.

9

SAFETY INSTRUCTIONS

ENGLISH

• In the event of a gas leak (such as Freon, propane gas, or LP gas),

ventilate sufficiently before using the air conditioner again.

• Stop operation and close the window during a storm or hurricane. If

possible, remove the product from the window before the hurricane

arrives.

Maintenance

• Before cleaning or performing maintenance, disconnect the power

supply and wait until the fan stops.

- 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 you are cleaning the inner parts of the unit.

• Appliance shall be disconnected from its power source during service

and replacing parts.

Refrigerant

General

• Follow the standards of the corresponding region or country for

handling the refrigerant and the air conditioner and for

disassembling the air conditioner.

• Use only the refrigerant specified on the air conditioner label.

• Do not input air or gas into the system except the specified

refrigerant.

• Do not touch the leaking refrigerant during installation or repair.

• If the refrigerant gas leaks during the installation, ventilate the area

immediately.

• Be sure to check for refrigerant leaks after installing or repairing the

product.

• In the case of refrigerant leakage, consult the dealer. When the air

conditioner is to be installed in a small room, it is necessary to take

proper measures so that the amount of any leaked refrigerant does

not exceed the limiting concentration even when it leaks. If the

10

SAFETY INSTRUCTIONS

refrigerant leaks exceeding the level of limiting concentration, an

oxygen deficiency accident may happen.

R32 Only

• The appliance shall be stored in a well-ventilated area where the

room size corresponds to the room area as specified for operation.

• Ducts connected to an appliance shall not contain an ignition source.

• Any person who is involved with working on or breaking into a

refrigerant circuit should hold a current valid certificate from an

industry-accredited assessment authority, which authorises their

competence to handle refrigerants safely in accordance with an

industry recognised assessment specification.

• 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.

• Keep any required ventilation openings clear of obstruction.

• The appliance shall be stored in a room without continuously

operating open flames (for example an operating gas appliance) and

ignition sources (for example an operating electric heater).

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

from occurring.

CAUTION INSTRUCTIONS

CAUTION

• To reduce the risk of minor injury to persons, malfunction, or damage

to the product or property when using this product, follow basic

precautions, including the following:

11

SAFETY INSTRUCTIONS

ENGLISH

Installation

• Use a forklift or 2 or more people to transport the air conditioner.

• Do not install the air conditioner in an area where it is directly

exposed to sea wind (salt spray).

• Install the drain hose properly for the smooth drainage of water

condensation.

• Install the air conditioner in a place where the noise from the outdoor

unit or the exhaust fumes will not inconvenience the neighbours.

• Safely dispose of packing materials such as screws, nails, plastic bags

or batteries using proper packaging after installation or repair.

• Exercise caution when unpacking or installing the air conditioner.

• Be especially careful of the case edges and the fins on the condenser

and evaporator.

• To avoid vibration or water leakage, keep the product level even

when installing it.

• When installing the unit, use the installation kit provided with the

product.

• The edges of heat exchanger fins are sharp enough to cut. To avoid

injury, wear gloves or cover the fins while working around them.

Operation

• Do not drink the water drained from the air conditioner.

• Do not place objects in direct proximity to the outdoor unit and do

not let leaves and other debris accumulate around the unit. Leaves

are a hotbed for small animals which can enter the unit. Once inside

the unit, such animals can cause malfunctions, smoke or fire if they

come into contact with electrical parts.

• Do not let the air conditioner run for a long time when humidity is

very high or when a door or a window has been left open.

• Do not expose people, animals, or plants to the cold or hot wind from

the air conditioner for extended periods of time.

• Do not use the product for special purposes, such as preserving

foods, works of art, etc. The air conditioner is designed for consumer

12

SAFETY INSTRUCTIONS

purposes, and is not a precision refrigeration system. There is risk of

damage or loss of property.

• Do not turn on the breaker or power when the front panel, cabinet,

top cover, or control box cover are removed or opened.

• Do not open the front grille of the product during operation. Do not

touch the electrostatic filter, if the unit is so equipped.

• Take care to prevent water from entering the product.

• Make sure that there are no obstacles close to the outdoor unit. The

presence of obstacles close to the outdoor unit may reduce the

performance of the outdoor unit or increase its operating sound.

• Do not turn off the power immediately after stopping operation.

Always wait for at least five minutes before turning off the power.

Maintenance

• Use a sturdy stool or ladder when cleaning, maintaining, or repairing

the air conditioner at a height.

• Do not plug or unplug the power supply plug to turn the unit on or

off.

• Never use strong cleaning agents or solvents or spray water when

cleaning the air conditioner. Use a soft cloth.

• Never touch the metal parts of the air conditioner when removing the

air filter.

• Tear apart and throw away plastic packaging bags so that children

will not play with them.

• When the product will not be used for a long time, disconnect the

power supply plug or turn off the breaker.

• Do not tilt the unit when removing or uninstalling it. The condensed

water inside can spill.

• Check the foundation for damage on a regular basis, especially if the

product has been in use for a long time.

• 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.

13

OPERATION

ENGLISH

OPERATION

Before Use

Notes for Operation

• Speed up the fan to cool or warm indoor air quickly, within a short period of time.

• Turn off the appliance and periodically open windows for ventilation. The indoor air quality may

deteriorate if the appliance is used for long periods.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the airflow

or reduce the appliance performance.

Suggestions for Energy Saving

• Do not over-cool the space. This may be harmful to your health and may consume more electricity.

• Block sunlight with blinds or curtains while you are operating the appliance.

• Keep doors or windows closed tightly while you are operating the appliance.

14

OPERATION

Product Overview

Ceiling Concealed Duct

Type 1

Type 2

a

Air Intake Vents

Takes in air from the room.

b

Air Outlet Vents

Circulates air back into the room at the desired temperature.

NOTE

• The number and location of parts may vary depending on the model of the appliance.

• Features may change depending on the model type.

15

OPERATION

ENGLISH

Using the Appliance with

Remote Control

Follow these steps to see a detailed guide for using

the product with the remote control.

1

Click the below website address.

• www.lg.com

2

Insert the model name in the search box.

• The model name is on the remote control or

printed on the box in which the remote

control is packed.

3

Search the manual that you want to see.

NOTE

• Some models do not have a manual on the

website. For those models, refer to the manual

included with the remote control.

16

OPERATION

Wired Remote Control Overview

Wired Remote Control

You can operate the appliance more conveniently with the wired remote control.

Buttons

Image Description

Power

t

Turns the appliance on/off

OPER MODE

Selects the desired operating mode

FAN SPEED

Adjusts the fan speed

Temperature Setting

J

,

K

Adjusts the desired temperature

17

OPERATION

ENGLISH

NOTE

• Some functions may not be available or displayed depending on the product type.

• When using simultaneous operation system, pressing the button on the remote will operate the system

after approximately 1-2 minutes.

VENT

Operates the appliance and any interlocked ventilation products

Setting

p

Sets various functions

AIR FLOW

Selects the direction of airflow

SUB FUNC

Selects sub fuctions

Reservation

z

Automatically turns the appliance on or off at a desired time

Direction

i

,

j

,

k

,

l

Selects the setting on the display

OK/CLEAR

Sets or cancels settings

ESC

Exits from the menu

a

Wired Remote Control Receiver

Receives a signal form the wireless remote control.

Image Description

18

OPERATION

Operating Mode

Cooling, Heating,

Dehumidification, Auto, Fan

Mode

Turn on the appliance to control the operating

mode.

Cooling Mode

This mode supplies cool air indoors.

1

Turn the appliance on by pressing the

t

button.

2

Press the

OPER MODE

button repeatedly to

select the Cooling mode.

3

Press the

J

or

K

button to set the desired

temperature.

• Each press increases or decreases the

temperature by 1

7

.

• Some controllers allow you to adjust the

temperature by 0.5

7

.

• You can set the temperature from 16

7

to

30

7

.

NOTE

• The temperature range may change depending

on the model.

• The cooling mode doesn't work if the desired

temperature is higher than the room

temperature.

- In this case, lower the desired temperature.

- For best results, set the desired temperature

to about 5

7

lower than the outside

temperature.

- If the desired temperature is higher than the

room temperature, the vent will only blow out

air rather than cooling.

Heating Mode (On Some Models)

It supplies warm wind to the indoor.

1

Turn the appliance on by pressing the

t

button.

19

OPERATION

ENGLISH

2

Press the

OPER MODE

button repeatedly to

select the Heating mode.

3

Press the

J

or

K

button to set the desired

temperature.

• Each press increases or decreases the

temperature by 1

7

.

• Some controllers allow you to adjust the

temperature by 0.5

7

.

• You can set the temperature from 16

7

to

30

7

.

NOTE

• The heating mode doesn't work if the desired

temperature is lower than the room

temperature.

- If so, please increase the desired temperature.

- For best results, set the desired temperature

to about 5

7

higher than the outside

temperature.

- If the desired temperature is lower than the

room temperature, the vent will only blow out

air rather than heating.

Dehumidification Mode

This function reduces moisture in the air.

1

Turn the appliance on by pressing the

t

button.

2

Press the

OPER MODE

button repeatedly to

select the Dehumidification mode.

20

OPERATION

3

Press the

FAN SPEED

button repeatedly to

adjust the fan speed.

Auto Mode

This function adjusts the airflow automatically.

Auto Operation Mode (On Some Models)

1

Turn the appliance on by pressing the

t

button.

2

Press the

OPER MODE

button repeatedly to

select the Auto mode.

3

Press the

J

or

K

button to select the desired

operation code if the temperature is higher or

lower than the desired temperature.

Auto Changeover Mode (On Some Models)

1

Turn the appliance on by pressing the

t

button.

Code Description

2

The appliance sets the desired

temperature to a level higher than

the current temperature.

1

The appliance sets the desired

temperature to a level slightly

higher than the current

temperature.

0The appliance maintains the

current temperature.

-1

The appliance sets the desired

temperature to a level slightly

lower than the current

temperature.

-2

The appliance sets the desired

temperature to a level lower than

the current temperature.

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