LG ARNU243B4G4 User manual

Brand: LG

Model: ARNU243B4G4

Category: Split-system air conditioners

Type: User manual

This manual is also suitable for

ARNU183B4G2

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

Cassette 4 way

MFL69889206

Rev.09_031423

www.lg.com

Scan to see the online manual.

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TABLE OF CONTENTS

4 IMPORTANT SAFETY

INSTRUCTIONS

4 READ ALL INSTRUCTIONS BEFORE USE

4 Safety Messages

4 WARNING INSTRUCTIONS

4 Technical Safety

5 Installation

5 Operation

6 Wireless Remote Control

6 Maintenance

6 Refrigerant

6 CAUTION INSTRUCTIONS

6 Installation

7 Operation

7 Maintenance

8 OPERATION

8 Before Use

8 Notes for Operation

8 Suggestions for Energy Saving

9 Product Overview

9 4way Cassette

10 Display

10 Manual Operation

10 Restoring the Previous Settings

11 Preparing before Operation

11 Inserting the Batteries into the Wireless

Remote Control

11 Installing the Remote Control Holder

11 Setting the Current Time on the Wireless

Remote Control

12 Selecting Fahrenheit or Celsius

13 Wireless Remote Control Overview

13 Wireless Remote Control

16 Using Wireless Remote Control

16 Operating with the Wireless Remote

Control

16 Cooling, Auto, Dehumidification, Heating,

Fan Mode

16 Jet Mode

17 Adjusting the Fan Speed

17 Adjusting the Airflow Direction

18 Timer Setting

19 Special Functions

21 Checking Room Temperature

21 How to Use Air Purification (On Some

Models)

21 Checking Overall Cleanliness (On Some

Models)

23 Air Quality Level Color Setting (On Some

Models)

24 SMART FUNCTIONS

24 LG ThinQ Application

24 LG ThinQ Application Features

24 Before Using LG ThinQ Application

25 Installing LG ThinQ Application

25 Open Source Software Notice Information

25 FCC Notice

25 FCC RF Radiation Exposure Statement

25 Industry Canada Statement

25 RF Radiation Exposure Statement

25 Wireless LAN Module Specifications

26 Diagnosis Using LG ThinQ

26 Using LG ThinQ to Diagnose Issues

27 MAINTENANCE

27 Cleaning

27 Cleaning Interval

28 Cleaning the Air Filter

29 Cleaning the Deodorization Filter and

PM1.0 Filter (On Some Models)

31 Cleaning the PM1.0 Sensor

32 Tips for Maintenance

32 Before Long Periods of Disuse

32 After Long Periods of Disuse

33 TROUBLESHOOTING

33 Before Calling for Service

33 Self-Diagnosis Function

33 Operation

35 Performance

35 Wi-Fi

37 LIMITED WARRANTY

37 USA

37 ARBITRATION NOTICE:

37 PROCEDURE FOR RESOLVING DISPUTES:

39 CANADA

39 ARBITRATION NOTICE:

39 PROCEDURE FOR RESOLVING DISPUTES:

4IMPORTANT SAFETY INSTRUCTIONS

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USE

Safety Messages

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and

follow all safety messages.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury,

and tell you what may happen if the instructions are not followed.

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 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 responsible for their safety. Children should be

supervised to ensure that they do not play with the appliance.

• To prevent hazards to you and others, only allow qualified personnel to install or service the product.

• 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.

• Installation MUST conform to the local building codes or, in the absence of local codes, the National

Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical Code Part1 CSA C.22. 1.

• The Limited Warranty is void and of no effect, and LG will have no liability hereunder to any Customer or

third party, to the extent any of the following occur: acts, omissions, and conduct of any and all third

parties including, but not limited to, the installing contractor and any repairs, service or maintenance by

unauthorized or unqualified persons.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill or injure you and others. All safety messages

will follow the safety alert symbol and either the word WARNING or CAUTION.

These words mean:

WARNING

You may be killed or seriously injured if you do not follow instructions.

CAUTION

You may be injured or cause damage to the product if you do not follow instructions.

5IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

Installation

• Contact the dealer to have the air conditioner installed.

• Contact the dealer for repairs, maintenance and to reinstall the air conditioner.

• 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.

• 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.

• Be sure to use only those parts which are listed in the service parts list. Never attempt to modify the

equipment.

• Do not install the unit in potentially explosive atmospheres.

• Do not install the air conditioner at any place where flammable gas may leak out. If the gas leaks out and

stays around the air conditioner, a fire may break out.

• Always install a dedicated circuit and breaker.

• Be sure to install an earth leakage breaker.

• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

• Be sure to establish an earth.

• Tightly secure the indoor/outdoor wiring connections. Route the cable properly so nothing is exerting

force on the cable that could disconnect it from the connection terminals. Improper or loose connections

can generate heat or cause a fire.

• Do not turn on the breaker or power while the front panel, cabinet, top cover or control box cover are

removed or opened.

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

flammable gas may cause a fire or explosion.

Operation

• Do not modify or extend the power cable.

• Do not install the unit in an area where there are flammable materials.

• Take care to ensure that the power cable cannot be pulled out or damaged during operation.

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

• Never let the indoor unit or the remote controller get wet.

• Do not insert hands or other objects through the air inlet or outlet while the product is operating.

• Take care to ensure that nobody can step on or fall onto the outdoor unit.

• Do not allow a child to mount on the unit or place any object on it. Do not let children play on and around

the unit.

• If refrigerant gas leaks while the unit is being repaired do not touch the leaking refrigerant gas.

• Never use flammable spray such as hair spray, lacquer or paint near the unit.

• Do not use the product in a tightly closed space for a long time.

• If equipment utilizing a burner is used in the same room as the air conditioner, there is the danger of

oxygen deficiency, which could lead to asphyxiation. Be sure to ventilate the room sufficiently to avoid

this hazard.

• 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 outdoor unit or increase its operating sound.

• If there are any abnormalities in the operation of the air conditioner such as strange sounds, smoke or

fire. turn off the power and contact the dealer immediately.

• Never sprinkle or spill water or liquids on unit.

• If the product becomes soaked (flooded or submerged), contact the dealer.

6IMPORTANT SAFETY INSTRUCTIONS

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

• Do not turn off the power immediately after stopping operation. Always wait for at least five minutes

before turning off the power.

• Stop operation and close all window in storm or hurricane. If possible, remove the product from the

window before the hurricane arrives.

Wireless Remote Control

• Remove the batteries if the remote control will not be used for an extended period of time.

• Never mix different types of batteries, or old and new batteries, in the remote control.

• Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

• Stop using the remote control if there is fluid leaking from the battery. If your clothes or skin is exposed

to the leaking battery fluid, wash it off with clean water.

• If the leaking battery fluid has been swallowed, rinse the inside of the mouth thoroughly and consult a

doctor.

• Dispose of the batteries in a place where there is no danger of fire.

Maintenance

• Consult with the installation contractor for cleaning or maintenance. Turn off all electrical power before

doing any cleaning or maintenance.

• Check the foundation for damaged on a continuous basis, especially if it has been in use for a long time.

• The heat exchanger fins are sharp edges enough to cut. To avoid injury, wear gloves or cover the fins

while working around them.

• Tear apart and throw away plastic packaging bags so that children will not play with them.

Refrigerant

• Never use refrigerants that are not specified on the specification. label and in the manuals.

• Do not mix air or gases other than the specified refrigerant used in the system.

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

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

• When installing the air conditioner in a small room, it is necessary to take proper measures so that even

when it leaks, the amount of any leaked refrigerant does not exceed the limiting concentration even

when it leaks. If the refrigerant leakage exceeds the limiting concentration level, an oxygen deficiency-

related accident may occur.

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:

Installation

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

• Do not install the product in an area where it is directly exposed to sea wind (salt spray).

7IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

SAVE THESE INSTRUCTIONS

• Make sure that the drainpipe is installed properly to drain water. Arrange the drain hose to ensure

smooth drainage.

• Do not install the product where the noise or hot air from the outdoor unit could be harmful to your

immediate surroundings.

• Exercise caution when unpacking or installing the product.

• Keep the product level during installation or removal.

• Safely dispose of the packing materials. Packing materials, such as nails and other metal or wooden

parts.

• Installation work must be performed in accordance with the National Electric Code by qualified and

authorized personnel only.

Operation

• Do not place anything on the power cable.

• Do not drink the water drained from the product.

• Do not step on or put anything on the product. (outdoor units)

• Do not place objects in direct proximity of the outside unit.

• 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, these animals can lead to the unit malfunctioning, and

end up causing in smoke or fire when they make contact with electrical parts.

• Do not let the air conditioner run while a door or window is open on a day with high humidity. This could

result in excessive moisture and water damage.

• Do not use the air conditioner for any other purposes other than comfort cooling or heating. Do not use

the unit for cooling precision instruments, food, plants, animals or works of art.

• Do not operate the product when using a room fumigation-type insecticide.

• The appliance is not intended for use by young children or infirm persons without supervision.

Maintenance

• Use a firm stool or ladder when cleaning or maintaining the product.

• Do not wipe the controller operation panel with benzine, thinner, chemical dust cloths, etc. The panel

may get discolored or the coating may peel off.

• If the product is very dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the

panel clean. Then wipe it dry it with another dry cloth.

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

• Contact the dealer for repair or maintenance.

8OPERATION

OPERATION

Before Use

Notes for Operation

• Adjust the direction of the airflow vertically to circulate indoor air.

• 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.

9OPERATION

ENGLISH

Product Overview

4way Cassette

Type 1

Type 2

aProduct Display and Remote Control Receiver

Displays the operating status and contains the receiver for the wireless remote.

bAir Outlet

Circulates air back into the room at the desired temperature.

cAir Intake and Air Filter

Takes in air from the room and reduces dust in the air.

10 OPERATION

Display

Type 1

aForced Operation Button

Operates the product when the remote control

can't be used.

•Press the a button for about 2 seconds. The

setting is Cooling mode, Power, 18 ℃.

bDefrost Mode

Lights up when the defrost mode or hot

start†function operates.

† This function is only available on heat pump

models.

cTimer

Lights up when the timer function is set.

dRemote Control Receiver

eFilter Sign

Lights up when the time to use filter is more

than 2400 hours after first operating the

product.

fPower

Lights up when the product turns on or

operates.

Type 2

aOperating Status Lamp

† The Clean Filter indicator lamp does not light

up starting from the corresponding product

manufacturing number (After Oct. 2021).

bForced Operation Button

Operates the product when the remote control

can't be used.

• Press the b button for about 2 seconds. The

setting is Cooling mode, Power, 18 ℃.

Manual Operation

If your wireless remote control is unavailable, you

can turn the appliance on and off by pressing the

Forced Operation button a on the indoor unit.

Type 1

Type 2

Restoring the Previous Settings

When the air conditioner is turned on again after a

power failure, Auto Start function restores the

previous settings.

When using the appliance for the first time, Auto

Restart function is set. You can cancel and set this

function by pressing the Forced Operation button

a on the indoor unit.

Canceling Auto Restart

1 Open the front panel cover.

2 Press and hold the Forced Operation button

a for 6 seconds.

3 When the appliance beeps twice, release the

Forced Operation button a. The product will

beep twice and the lamp will blink 8 times.

Setting Auto Restart

1 Open the front panel cover.

Color Description

Green

1) Cooling or Heating mode

2) Hot start or defrost mode

before starting heating

mode

Yellowish

Green

1) Time to clean the filter in

cooling or heating mode†

2) when the reservation sets

Orange Time to clean filter when the

product is not operated

11OPERATION

ENGLISH

2 Press and hold the Forced Operation button

a for 6 seconds.

3 When the appliance beeps twice, release the

Forced Operation button a. The product will

beep twice and the blue lamp will blink 4

times.

Type 1

Type 2

NOTE

• This feature may change depending on the

model type.

• If you press and hold the Forced Operation

button a for 3 - 5 seconds, instead of 6 seconds,

the appliance will switch to the test operation. In

this test operation, the appliance blows out

strong cooling air for 18 minutes and then

returns to factory default settings.

Preparing before Operation

Inserting the Batteries into the

Wireless Remote Control

Insert AAA (1.5 V) batteries into the wireless

remote control.

• Remove the battery cover and insert the new

batteries, making sure that the + and – terminals

of the batteries are oriented correctly.

NOTE

• When the wireless remote control display begins

to fade, replace the AAA (1.5 V) batteries.

• Do not use old and new batteries together.

Installing the Remote Control

Holder

1 Choose a suitable place where its safe and

easy to reach.

2 Fix the firmly to the wall with the supplied

screws.

3 Slide the remote controller inside the holder.

NOTE

• The remote controller should never be exposed

to direct sunlight.

• The signal transmitter and receiver should

always be clean for proper communication. Use

a soft cloth to clean them.

• If other appliances are accidentally affected by

the remote controller, change their position or

consult your serviceman.

Setting the Current Time on the

Wireless Remote Control

1 Insert the batteries.

• The time flashes at the bottom of the

display screen.

2 Press and hold the Set/Clear button for about

3 seconds.

12 OPERATION

3 Press the c or d button to change the time

in 10-minute increments and decrements.

4 Press the Set/Clear button to set the current

time.

NOTE

•The On Timer and Off Timer are available after

setting the current time.

Selecting Fahrenheit or Celsius

Set the temperature display to show either

Fahrenheit (℉) or Celsius (℃) units.

1 Turn the appliance on.

2 Press and hold the Func. (Function) button

for about 5 seconds to change units between

℃ and ℉.

13OPERATION

ENGLISH

Wireless Remote Control Overview

Wireless Remote Control

† This feature is only available on some models.

Use the wireless remote control to operate the appliance more conveniently.

14 OPERATION

Buttons

Image Description

Air Purify†

Supplies clean, fresh air using ion particles and the filter

Vane Angle

Adjusts the vanes to direct the airflow from the air outlet

Air Flow

Adjusts the various air flow direction

Power t

Turns the appliance on/off

Temperature Setting a, b

Adjusts the desired temperature

Mode

Selects the desired operating mode

• Each press changes the modes in this order: Cooling ~ Auto ~

Dehumidification ~ Heating ~ Fan.

Jet Mode

Changes the room temperature quickly

Fan Speed

Adjusts the fan speed

Func. (Function)†

Sets the various function or changes the temperature unit

• Each press changes the modes in this order: Auto Clean ~ Energy Saving

Cooling ~ Smart Clean ~ Comfort Cooling.

℃/℉(5 s)

Press and hold the Func. (Function) button for about 5 seconds to set the temperature

display to show either Fahrenheit (℉) or Celsius (℃) units.

Swing (Up-Down Swing)

Adjusts the airflow direction up and down

• Press once more Swing (Up-Down Swing) button during rotation, the wind

direction is fixed at the desired location.

Sleep

Operates the air conditioner in Sleep mode before turning it off automatically at the set

time

Turns on the air conditioner at the set time

Off

Turns off the air conditioner at the set time

15OPERATION

ENGLISH

Icons

Timer Setting c, d

Adjusts the time on the display

Light†

Press and hold the c button for about 3 seconds to turn the indoor unit LED display on

or off.

Room Temp. (Room Temperature)

Press and hold the d button for about 3 seconds to display the room temperature.

Set/Clear

Sets or cancels the special functions or timer

Time(3 s)

Press and hold the Set/Clear button for about 3 seconds to set the current time on the

wireless remote control.

Reset

Resets the wireless remote control setting

Cooling Mode Dehumidification Mode

Heating Mode Fan Mode

Auto Mode Up-Down Swing

Left-Right Swing†Energy Control Function

Energy Saving Function Room Temperature

Desired Temperature Adjusting the Fan Speed

Comfort Cooling Function Auto Clean Function

Smart Clean Function Sleep Timer

Image Description

16 OPERATION

Using Wireless Remote

Control

Operating with the Wireless

Remote Control

Point the wireless remote control towards the

signal receiver in front of the appliance to operate

it.

Type 1

Type 2

NOTE

• The wireless remote control may operate other

electronic devices if it is directed towards them.

Make sure to point the wireless remote control

towards the appliance signal receiver.

Cooling, Auto, Dehumidification,

Heating, Fan Mode

You can change the operating mode when the

appliance is turned on.

1 Turn the appliance on.

2 Press the Mode button repeatedly to select

the desired mode.

3 Press the a or b button to set the desired

temperature.

• Cooling Mode: Set the temperature from 64

℉ (18 ℃) to 86 ℉ (30 ℃).

• Heating Mode: Set the temperature from 60

℉ (16 ℃) to 86 ℉ (30 ℃).

• Auto Mode (Cooling only): Each press

changes the temperature as follows: -2 & -

1 & 0 & 1 & 2

• Auto Mode (Heat pump): Set the

temperature from 64 ℉ (18 ℃) to 86 ℉ (30

℃).

• Dehumidification, Fan Mode: There is no

temperature control.

Jet Mode

Use this mode to change the room temperature

more quickly.

1 Turn the appliance on.

2 Press the Mode button repeatedly to select

the desired mode.

•The Jet mode is available with Cooling,

Heating and Dehumidification modes.

Icon Description

Cooling Mode

Cool air blows from the air outlets.

Auto Mode

The product adjusts the airflow

automatically.

Dehumidification Mode

This function removes moisture in

indoor air.

Heating Mode

Warm air blows from the air outlets.

Fan Mode

This function circulates the air

without heating or cooling it.

17OPERATION

ENGLISH

3 Press the Jet Mode button.

•Jet Cooling Mode

Strong cool air blows out for 30 minutes.

After 30 minutes, the temperature is

maintained at 64 ℉ (18 ℃) by default.

- To change the temperature, press the a

or b button to set the desired

temperature.

•Jet Heating Mode

Strong warm air blows out for 30 minutes.

After 30 minutes, the temperature is

maintained at 86 ℉ (30 ℃) by default.

- To change the temperature, press the a

or b button to set the desired

temperature.

NOTE

• Press the Jet Mode or Fan Speed or a or b

button to cancel the Jet mode.

Adjusting the Fan Speed

You can adjust the fan speed in 5 steps.

• Press the Fan Speed button repeatedly to select

the desired fan speed.

NOTE

• The fan speed may be different according to the

model.

Adjusting the Airflow Direction

You can adjust the direction of airflow vertically or

horizontally.

•Press the Air Flow button to select the desired

airflow direction.

Speed Wireless Remote

Control Icon

Natural

High

Medium

Low

Super Low

Icon Description

Indirect Airflow

Sets the vane to deflect airflow away

from occupants in the room.

Direct Airflow

Sets the vane to direct airflow toward

occupants in the room.

Smart Mode

Sets the desired temperature quickly

and sets the vane deflect airflow away

from occupants in the room.

Refresh Mode

Emits wind that automatically

changes temperature, air volume and

wind direction.

18 OPERATION

NOTE

• Checking each vane number

Setting Individual Vane Angle

You can adjust the vane angle individually.

1 Press the Vane Angle button repeatedly to

select the desired vane.

2 Press the a or b button to select the desired

vane angle.

Timer Setting

Set the appliance to turn on and off automatically

at a desired time.

Sleep Timer

The air conditioner operates in Sleep mode and

turns off automatically at the set time.

1 Press the Sleep button while the air

conditioner is operating.

• The icon below flashes at the bottom of the

display screen.

2 Press the c or d button to set the desired

time.

3 Press the Set/Clear button.

• The air conditioner operates until the set

time and then turns off automatically.

On Timer

1 Press the On button while the air conditioner

is operating.

• The icon below flashes at the bottom of the

display screen.

#First vane

## Second vane

### Third vane

#### Fourth vane

19OPERATION

ENGLISH

2 Press the c or d button to set the desired

time.

3 Press the Set/Clear button.

• Turn the air conditioner off. It will turn on

automatically at the set time.

Off Timer

1 Press the Off button while the air conditioner

is operating.

• The icon below flashes at the bottom of the

display screen.

2 Press the c or d button to set the desired

time.

3 Press the Set/Clear button.

• The air conditioner operates until the set

time and then turns off automatically.

Special Functions

Auto Clean (On Some Models)

In Cooling and Dehumidification modes,

moisture is generated inside the indoor unit. Use

this function to reduce that moisture.

1 Turn the appliance on.

2 Press the Func. (Function) button repeatedly

to select the Auto Clean function.

3 Press the Set/Clear button to set the function.

NOTE

• Some functions cannot be used while the Auto

Clean function is in operation.

• If you turn off the appliance, the fan continues to

run for 30 minutes to clean the inside of the

indoor unit.

20 OPERATION

Energy Saving Cooling (On Some

Models)

This function adjusts the desired temperature

during the cooling operation to enhance the

comfort of the user and improve the energy saving

performance.

1 Turn the appliance on.

2 Press the Func. (Function) button repeatedly

to select the Energy Saving Cooling function.

3 Press the Set/Clear button to set the function.

Smart Cleaning (On Some Models)

During the Smart Clean operation, a brush moves

back and forth across the filter to clean it.

Auto Smart Clean Operation

If the accumulated operation time of the product

exceeds 30 hours, the Smart Clean automatically

starts when the indoor unit is turned off.

1 Press the Func. (Function) button repeatedly

to select the Smart Clean function.

2 Press the Set/Clear button to set the function.

NOTE

• If the accumulated operation time of the product

exceeds 30 hours, the Smart Clean

automatically starts when the indoor unit is

turned off.

• To stop this function, press the Set/Clear button

again.

Manual Smart Clean Operation

You can also manually set Smart Clean function.

1 When the indoor unit stops, press the Func.

(Function) button repeatedly to select the

Smart Clean function.

2 Press the Set/Clear button to set the function.

NOTE

• The cleaning process used in the Smart Clean

function may vary by product.

• To stop this function, press the Set/Clear button

again.

Comfort Cooling (On Some Models)

This function cools until it reaches the set

temperature and then automatically controls the

cooling level as needed to maintain that

temperature.

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LG ARNU243B4G4 User manual

Brand: LG

Model: ARNU243B4G4

Category: Split-system air conditioners

Type: User manual

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ARNU183B4G2

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