LG LAU120HYV1 Owner’s Manual

http://www.lghvac.com

www.lg.com

Applied Models : LAN090HYV1 / LAU090HYV1 LAN120HYV1 / LAU120HYV1

P/NO : MFL67502023

OWNER’S MANUAL

Please read this manual carefully before operating your set and retain it for future reference.

TYPE : WALL MOUNTED

AIR CONDITIONER

ENGLISH

FRANÇAIS

ESPAÑOL

TIPS FOR SAVING ENERGY

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Here are some tips that will help you minimize power consumption when you use your air conditioner.

• Do not cool excessively indoors. This may be harmful for your health and may consume more electricity.

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

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

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool indoor air quickly.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

TIPS FOR SAVING ENERGY

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and to ensure peak performance of your product.

WARNING

It can result in serious injury or death when the directions are ignored.

CAUTION

It can result in minor injury or product damage when the directions are ignored.

WARNING

• Installation or repairs made by unqualified persons can result in hazards to you and others.

• Installation MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical Code Part1 CSA C.22.1.

• The information contained in the manual is intended for use by a qualified service technician familiar with 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.

Power

• Unplug the power plug immediately in the event of a blackout or thunderstorm. Failure to do so may result in fire or electric shock.

• Always use a power plug and socket with a ground terminal. Failure to do so may result in electric shock or product failure.

• Install a dedicated electric outlet and circuit breaker before you use the air conditioner. Failure to do so may result in electric shock or product failure.

• Do not connect the ground wire to a gas pipe, a lightning rod or a telephone ground wire. It may result in electric shock or product failure.

• Use a standard circuit breaker and fuse conforming with the rating of the air conditioner. Failure to do so may result in electric shock or product failure.

• Make sure to check that the power cable plug is not dirty, loose or broken and then only insert the plug completely. It may result in electric shock or product failure.

• Do not modify or extend the power cable. Scratches or peeling insulation on power cables or cords may result in fire or electric shock, and should be replaced.

• Don’t use a power cord, a plug or a loose socket which is damaged. It may result in fire or electric shock.

• Do not use a damaged power cord or plug. It may result in electric shock or product failure.

• Do not touch, operate or repair the air conditioner with wet hands. It may result in electric shock or product failure.

• Make sure that the power plug is not damaged when you move the air conditioner. Failure to do so may result in electric shock or product failure.

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IMPORTANT SAFETY INSTRUCTIONS

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READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

• Do not place a heater or other heating appliances near the power cable. It may result in fire, electric shock, or product failure.

• Make sure that the power cord is not pulled or damaged while the air conditioner is operating. Failure to do so may result in fire, electric shock, or product failure.

• Do not place any objects on the power cord. It may result in electric shock or product failure.

Installation

• Do not install the air conditioner on an unstable surface or where there may be a danger of it falling.

It may result in death, serious injury, or product failure.

• Contact an authorized service center when you install or relocate the air conditioner. Failure to do so

may result in serious injury or product failure.

• 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 cause heat generation or fire.

• Install the panel and the cover of the control box safely. Failure to do so may result in explosion or

fire.

• Do not install the air conditioner where flammable liquids or gases such as gasoline, propane, paint

thinner, etc. are stored. It may result in explosion or fire.

• Make sure that the pipe and the power cable that connect the indoor unit and the outdoor unit are

not pulled tight when you install the air conditioner. Failure to do so may result in electric shock or product failure.

• Do not mix air or gas in the system except for the specific refrigerant. If air enters the refrigerant

system, it may result in an excessively high pressure that causes injury or damage to the equipment.

Use

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

the equipment. It may result in death, serious injury, or product failure.

• Do not pull the power cord when you remove the power plug. It may result in death or electric

shock.

• Discard the batteries where there is no danger of fire. Failure to do so may result in explosion or

fire.

• Contact a qualified HVAC technician when the air conditioner is submerged in water due to flooding.

Failure to do so may result in death, explosion, or fire.

• Only use components that are approved by the manufacturer and do not repair or modify them. Fail-

ure to do so may result in electric shock or product failure.

• Only use the refrigerant specified on the air conditioner label. Failure to do so may result in explo-

sion or fire.

• Do not allow water to run into the air conditioner. It may result in explosion or fire.

• Do not leave flammable substances such as gasoline, benzene and thinner near the air conditioner.

It may result in explosion or fire.

• Do not use the air conditioner for an extended period of time in a small place without proper ventila-

tion. It may result in explosion or fire.

• Do not touch the electrostatic filter after opening the front grille. It may result in electric shock or

product failure.

• For inner cleaning, contact a qualified HVAC technician or a dealer. Using harsh detergents may cause corrosion or damage to the unit and may lead to product failure, fire, or electric shock.

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

• Unplug the power plug if there is a noise, smell or smoke coming from the air conditioner. Failure to do so may result in explosion or fire.

• Make sure to ventilate sufficiently when this air conditioner and a heating appliance such as a heater are used simultaneously. Failure to do so may result in fire, serious injury, or product failure.

• Make sure that children do not climb on or hit the outdoor unit. Failure to do so may result in death or product failure.

• Do not turn the air conditioner on or off by plugging in or unplugging the power plug. It may result in fire or electric shock.

• If there is a gas or Freon leak, ventilate sufficiently before using the air conditioner again. Failure to do so may result in explosion or fire.

• Using the product for special purposes, such as preserving foods, works of art, etc. may result in death, fire, or electric shock. It is a consumer air conditioner, not a precision refrigeration system.

• Do not block the inlet or outlet of air flow. It may result in explosion or product failure.

• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is operating. It may result in electric shock or serious injury.

• Do not expose people, animals, or plants to the cold or hot wind from the air conditioner for prolonged amounts of time. It may result in serious injury.

• Do not drink the water drained from the air conditioner. It may result in serious health complications.

Maintenance

• Turn the main power off and unplug the power plug when you clean or repair the air conditioner. Failure to do so may result in death, serious injury, or product failure.

CAUTION

Installation

• Install the outdoor unit on the north side to prevent the outside unit from being in direct sunlight. Do

not place the indoor unit in direct sunlight from windows. Excessive sunlight may result in product failure.

• Safely dispose of packing materials such as screws, nails or batteries in a packing bag after installa-

tion or repair. It may result in serious injury.

• Do not install the air conditioner where it will be exposed to sea wind (salt spray) directly. It may re-

sult in product failure.

• Install the drain hose properly for smooth drainage of condensed water. Failure to do so may result

in product failure.

• Install the air conditioner where the noise from the outdoor unit or the exhaust gas will not incon-

venience the neighbors. Failure to do so may result in conflict between neighbors.

• Be cautious when you unpack or install the air conditioner. Failure to do so may result in serious in-

jury or product failure.

• Do not touch the refrigerant leakage during installation or repair. It may result in product failure.

• Transport the air conditioning unit with two or more people or use a forklift. Failure to do so may re-

sult in serious injury.

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IMPORTANT SAFETY INSTRUCTIONS

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Use

• Remove the batteries when the remote control is not in use for an extended period of time.

Failure to do so may result in product failure.

• Make sure that the filter is installed before you operate the air conditioner. Failure to do so may re-

sult in product failure.

• Unplug the power plug when the air conditioner is not used for an extended period of time.

Failure to do so may result in product failure.

• Make sure to check if there is a refrigerant leak after you install or repair the air conditioner.

Failure to do so may result in product failure.

• Do not place any objects on the air conditioner. It may result in product failure.

• If there is a refrigerant leak during the installation of the air conditioner, ventilate the area immedi-

ately. Failure to do so may result in serious injury or product failure.

• Follow the standards of the corresponding region or country for handling the refrigerant and the air

conditioner as well as for disassembling the air conditioner. Failure to do so may result in product failure.

• Do not mix the batteries for the remote control with other types of batteries or mix new batteries

with used batteries. It may result in product failure.

• Do not recharge or disassemble the batteries. It may result in explosion, fire or serious injury.

• Do not dispose of the batteries in fire. It may result in explosion or fire.

• Stop using the remote control if there is a battery fluid leak. If your clothes or skin are exposed to

the battery fluid from a leak, wash it off with clean water. Failure to do so may result in serious injury.

• If you swallow the battery fluid from a leak, wash out the inside of your mouth thoroughly and then

consult a doctor. Failure to do so may result in serious health complications.

• Do not let the air conditioner run for a long time when the humidity is very high or when a door or

window has been left open. It may result in product failure.

• Do not use the product for special purposes,such as preserving foods, works of art, etc. It is a con-

sumer air conditioner, not a precision refrigeration system. There is risk of damage or loss of property.

Maintenance

• Do not use strong cleaning agents, solvents, or water when you clean the indoor air conditioner, as

these may result in serious injury or product failure. Instead, use a smooth, dry cloth to clean the surfaces of the indoor unit and contact a qualified HVAC technician to clean the outdoor unit.

• Never touch the metal parts of the air conditioner when you remove the air filter. It may result in se-

rious injury or product failure.

• Use a sturdy stool or ladder when you clean, maintain or repair the air conditioner at a height.

Failure to do so may result in serious injury or product failure.

SAVE THESE INSTUCTIONS

TABLE OF CONTENTS

2 TIPS FOR SAVING EN-

ERGY

3 IMPORTANT SAFETY IN-

STRUCTIONS

8 BEFORE USE

8 Components

8 Operation ranges

9 Using the remote control

11 BASIC FUNCTIONS

11 Cooling your room

11 Heating your room

11 Removing humidity

12 Airing your room

12 Adjusting the fan speed

12 Adjusting the air ﬂow direction

12 Using the 1 Touch soft air

13 Setting the timer

14 ADVANCED FUNCTIONS

14 Changing room temperature quickly

14 Indoor air puriﬁcation

15 Auto Changeover operation

15 °C/°F Conversion

15 Energy saving cooling mode

16 Display screen brightness

16 Operating the air conditioner without

the remote control

17 Restarting the air conditioner automat-

ically

18 LG Smart AC (Optional)

19 MAINTENANCE

21 Cleaning the air ﬁlter

21 Cleaning the 3M Filter

22 TROUBLESHOOTING

22 Self-diagnosis function

22 Before requesting service

25 Function of wired remote control

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BEFORE USE

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Outdoor unit

NOTE

• The number of operation lamps and their locations may vary, depending on the model of the air conditioner.

Indoor unit

* Features may change according to the type of model.

Operation ranges

The table below indicates the temperature ranges the air conditioner can be operated within.

Mode Indoor temperature outdoor temperature

Cooling 18°C~30°C(64.4°F~86°F) -10°C~48°C(14°F~118.4°F)

Heating 16°C~30°C(60.8°F~86°F) -25°C~24°C(-13°F~75.2°F)

BEFORE USE

Components

Front Panel

Air Filter

Air outlet

3M Filter

Wi-Fi Module (Sold separately)

On/Off button Signal receiver

Operation lamp

Air deﬂector (vertical louver & Horizontal vane)

Air inlet vents

Air outlet vents

Coolant piping Drain hose

Connection

Base plate

wire

BEFORE USE

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Using the remote control

You can operate the air conditioner more conveniently with the remote control.

Wireless remote control

* Some functions may not be supported, depending on the

model.

Control

panel

Display

screen

Description

X P

Functions button* : Sets the special functions.

: Auto clean

: Energy saving cooling operation.

1 Touch soft air button : Easily adjust the air flow to deflect direct wind away.

- On/Off button: Turn the power on/off.

Temperature adjustment buttons : Adjust the room temperature when cooling and heating.

DBE

Operation mode selection button* : Select the operation mode. Cooling operation (A) / Auto operation or auto changeover (C) / Dehumidifying operation (D) / Heating operation (B) / Air circulation operation (

Jet cooling/heating button* : Warm up or cool down the indoor temperature within a short period of time.

Indoor fan speed button : Adjust the fan speed.

Air flow direction buttons :

Adjust the air

flow direction vertically or horizontally.

Temperature display button : Display the room temperature. Also change unit from °C to °F if held for 5 seconds.

Sleep mode auto button : Set the sleep mode auto operation.

Time buttons : Set the start / end time.

Light button : Adjust the brightness of the indoor unit display.

Set/clear button : Set or cancel functions. Also set the current time if held for 3 seconds.

Reset button: Reset the air conditioner settings.

Display screen

Control panel

BEFORE USE

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Inserting batteries

Insert AAA (1.5 V) batteries before using the remote control.

1 Remove the battery cover.

2 Insert the new batteries and make sure

that the + and - terminals of the batteries are installed correctly.

3 Reattach the battery cover.

Installing the remote control holder

Install the holder where there is no direct sunlight to protect the remote control.

1 Choose a safe and easily-accessible place. 2 Fix the holder by fastening the 2 screws

firmly with a screwdriver.

3 Slide the remote control into the holder.

Point the remote control towards the signal receiver at the bottom of the air conditioner to operate it.

NOTE

• If the display screen of the remote control starts to fade, replace the batteries.

Operating method

NOTE

• The remote control may operate other electronic devices if pointed towards them. Make sure to point the remote control towards the signal receiver of the air conditioner.

• For proper operation, use a soft cloth to clean the signal transmitter and receiver.

• Jet mode in Heating doesn’t work when equipped with a wired remote controller.

• ON/OFF reserve mode doesn’t work when equipped with a wired remote controller.

BASIC FUNCTIONS

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3 Press

or Hto set the desired temperature between 60°F (16°C) and 86°F (30°C).

NOTE

• In this mode you cannot adjust the room temperature, as it is adjusted automatically. Also, the room temperature is not displayed on the display screen.

NOTE

Cooling-only models do not support this function.

Cooling Mode

Auto or Auto Changeover Mode

Dehumidiﬁcation Mode

Heating Mode

Fan Mode

•

Cooling Only Model(

), Heat Pump Model( )

Operation Mode

Removing humidity

(Dehumidifying operation)

Dehumidifying mode prevents the growth of mold by removing excess moisture from an area with high humidity. This mode adjusts the room temperature and the fan speed automatically to maintain the optimal level of humidity.

1 Press | to turn on the power. 2 Press f until D is displayed on the display

screen.

Heating your room

(Heating operation)

1 Press | to turn on the power. 2 Press f until B is displayed on the dis-

play screen.

Cooling your room

(Cooling operation)

1 Press | to turn on the power. 2 Press f until A is displayed on the dis-

play screen.

3 Press

or Hto set the desired tempera-

ture between 64°F (18°C) and 86°F (30°C).

BASIC FUNCTIONS

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Airing your room

(Air Circulation operation ; Fan mode)

This mode only circulates the indoor air without changing the room temperature. The cooling lamp lights up in air circulation mode.

1 Press | to turn on the power. 2 Press f until E is displayed on the dis-

play screen.

3 Press g to adjust the fan speed.

Adjusting the fan speed

1 Press g repeatedly to adjust the fan

speed.

- Select 5if you want natural wind. The fan speed alternates randomly to mimic a natural breeze.

Adjusting the air ﬂow direction

1 To adjust the direction of the air flow verti-

cally, press

D repeatedly and select the

desired direction.

- Select

I to adjust the direction of the air

flow automatically.

2 To adjust the direction of the air flow hori-

zontally, press E repeatedly and select the desired direction.

- Select

J to adjust the direction of the

air flow automatically.

Using the 1 Touch soft air

(Comfort Vane operation)

The comfort vane option conveniently sets the vane to a preset position that deflects the supply air away from blowing directly onto room occupants.

1 Press | to turn on the power. 2 Press repeatedly and select the

de-

sired direction.

- or is displayed on the display screen.

NOTE

•

Adjusting the air flow direction horizontally may not be supported, depending on the model.

• Adjusting the air deflector arbitrarily may cause product failure.

• If you restart the air conditioner, it starts to operate with the previously set direction of air flow, so the air deflector may not match the icon displayed on the remote control. When this occurs, press

D or E to adjust the direction of

the air flow again.

Remark Speed

High

Medium - High

Medium

Medium - Low

Low

Natural Wind

BASIC FUNCTIONS

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NOTE

• Pressing f or Mduring comfort vane

operation will turn off the comfort vane feature.

• Pressing

during comfort vane operation will turn off the comfort vane feature and set up the auto swing of vertical direction.

• When this feature is off, the horizontal vane operates automatically depending on the set mode.

Canceling the timer setting

1 Press the timer function you want to can-

cel and then press

- To cancel all timer settings, press and hold

Setting sleep mode

Use the sleep mode to turn off the air conditioner automatically when you go to sleep.

1 Press | to turn on the power. 2 Press l 3 Press

or Fto select the hour

(up to 7 hours).

4 Press p to finish.

T is displayed on the display screen in

sleep mode.

Setting the timer

You can use the timer function to save energy and to use the air conditioner more efficiently.

Turning on the air conditioner automatically at a set time

1 Press m.

- The icon below flickers at the bottom of the display screen.

2 Press

or Fto select the minutes.

3 Press p to finish.

Turning off the air conditioner automatically at a set time

1 Press n.

- The icon below flickers at the bottom of the display screen.

2 Press

or Fto select the minutes.

3 Press p to finish.

NOTE

In the Cooling and Dehumidifying modes, the temperature increases by 2 °F (1 °C) after 30 minutes and by a further 2 °F (1 °C) after another 30 minutes for a more comfortable sleep. The temperature increases up to 4 °F (2 °C) from the preset temperature.

ADVANCED FUNCTIONS

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Changing room temperature quickly

(Jet Cool/Heat operation)

This mode allows you to cool indoor air quickly in the summer or warm it quickly in the winter.

1 Press | to turn on the power. 2 Press M.

- is displayed on the display screen.

- In jet cooling mode, strong air blows out at a temperature of 18°C (64°F) for 30 minutes.

- In jet heating mode, strong air blows out at a temperature of 30°C (86°F) for 30 minutes.

Indoor air puriﬁcation

Auto Clean operation

In the cooling and dehumidifying operations, moisture is generated inside the indoor unit. Use the auto cleaning function to remove such moisture.

1 Press X.

J is displayed on the display screen.

- If you turn off the power, the fan operates for 30 minutes and cleans the inside of the indoor unit.

NOTE

• In Air Circulation, Auto, or Auto Changeover mode, this function cannot be used.

• This function may not be supported, depending on the model.

NOTE

Some buttons cannot be used while the auto cleaning function is in operation.

ADVANCED FUNCTIONS

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Energy saving cooling mode

This mode minimizes power consumption during cooling and increases the set temperature to the optimal level for a more comfortable environment.

1 Press | to turn the power on. 2 Press f repeatedly to select the cooling

operation.

- A is displayed on the display screen.

3 Press

G is displayed on the display screen.

Auto Changeover operation

This mode changes the operation mode automatically to maintain the set temperature at ±4°F (2°C).

1 Press | to turn on the power. 2 Press f until C is displayed on the dis-

play screen.

3 Press

or Hto set the desired temperature between 64°F (18°C) and 86°F (30°C).

4 Press g repeatedly to select the fan

speed.

°C/°F Conversion

The unit converses from °C to °F or from °F to °C if Room Temperature KEY is pressed for 5 seconds.

NOTE

This function may not be supported, depending on the model.

NOTE

This function may not be supported, depending on the model.

NOTE

• It is possible that the air conditioner and remote control may display different temperatures during this operation.

ADVANCED FUNCTIONS

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- For cooling and heating models, the operation mode changes based on the room temperature as indicated in the table below.

- Cooling-only models are set to 71.6°F (22°C).

2 Press the On/Off button.

3 Close the front panel as soon as you turn

on/off button.

- Lift down both sides of the panel slightly.

1 Open the front panel.

- Lift up both sides of the cover slightly.

Operating the air conditioner without the remote control

You can use the On/Off button of the indoor unit to operate the air conditioner when the remote control is unavailable. However, the fan speed is set to high.

In case of turning On

Room temp. Set temp.

Operation

mode

Below 21°C (69.8°F)

24°C (75.2°F)

Heating operation

Above 21°C (69.8°F) and below 24°C (75.2°F)

23°C (73.4°F)

Dehumidifying operation

Above 24°C (75.2°F)

22°C (71.6°F)

Cooling operation

* Features may change according to the type

of model.

* Features may change according to the type

of model.

Display screen brightness

You can adjust the brightness of the indoor unit display screen.

1 Press

to turn on/off the display screen.

NOTE

This function may not be supported, depending on the model.

ADVANCED FUNCTIONS

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1 Close the front panel.

- Lift down both sides of the panel slightly.

2 Open the front panel.

- Lift up both sides of the cover slightly.

3 Press the On/Off button.

4 Close the front panel as soon as you turn

on/off button.

- Lift down both sides of the panel slightly.

Restarting the air conditioner automatically

When the air conditioner is turned on again after a power failure, this function restores the previous settings. This function is a factory default setting.

1 Open the front cover.

- Lift up both sides of the cover slightly.

2 Press the On/Off button and hold it for 6

seconds.

- The unit will beep twice and the lamp will blink twice 4 times.

- To re-enable the function, press the On/ Off button and hold it for 6 seconds. The unit will beep twice and the blue lamp will blink 4 times.

In case of turning Off

Disabling auto restart

NOTE

• If you press and hold the On/Off button for 3 – 5 seconds instead of 6 seconds, the unit will switch to the test operation.

• In the test operation, the unit blows out strong air for cooling for 18 minutes and then returns to the factory default settings.

* Features may change according to the type

of model.

* Features may change according to the type

of model.

* Features may change according to the type

of model.

* Features may change according to the type

of model.

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ADVANCED FUNCTIONS

NOTE

• The Wi-Fi Module (PCRCUDT3), an optional accessory (sold separately), is required to enable Wi-Fi connectivity.

• For details, refer to the following web site.

- North America : http://us.smartthinq.com

- Canada : http://ca.smartthinq.com

NOTE

The Wi-Fi app is only compatible with smart phones and is not available for laptops or tablets.

User Guide

• The mobile App will continue to be updated with design and content improvements. Check for updates at the Play Store or the App Store.

• Some models of Wi-Fi-capable units will not have every function available through the mobile App remote control.

• You can check Wi-Fi connection on your app or module after finish the registration.

Setting the Environment

1 Search and download ‘LG Smart AC’ in Google play or App store. 2 Become a member in LG Smart AC app or web site.

- North America : http://us.smartthinq.com

- Canada : http://ca.smartthinq.com

3 Please log in and register the product.

- For detail usage guide, refer to the installation manual enclosed in LG Smart AC box.

LG Smart AC (Optional)

LG Smart AC uses a wireless adapter Wi-Fi that allows the user to control the unit with the LG mobile app. * Limited to the Wi-Fi applied model

Minimal Speciﬁcations

- Android OS 4.0 or higher at 320 x 480 or higher screen resolution.

- iOS 6 or higher at 960 x 640 or higher screen resolution.

Some phones meeting the above criteria may not operate every function of the unit, but phones below this minimum specification cannot operate the unit.

Supported wireless routers

CISCO, APPLE, ASUS, D-LINK, TP LINK, TRENDNET, ACTIONTEC, NETGEAR, 2WIRE Other routers are not supported for the Wi-Fi application. The above models are optimized for the Wi-Fi service, but any device that does not meet the minimum system requirements will not be able to run the program.

MAINTENANCE

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Clean the product regularly to maintain optimal performance and to prevent possible breakdown.

When not in use

If the air conditioner will not be used for an extended of time, dry the air conditioner to maintain it in best condition.

1 Dry the air conditioner in Fan mode for 3 to 4 hours and disconnect the power to the unit.

There may be internal damage if moisture is left in components.

2 Before using the air conditioner again, dry the inner components of the air conditioner in Fan

mode for 3 to 4 hours. This will help to remove odor which is generated from moisture.

* Features may change according to the type of model.

MAINTENANCE

Type Description Interval

Air filter See “Cleaning the air filter.” 2 weeks

3M Filter See ” Cleaning the 3M Filter ” 1 month

Indoor unit

Clean the Indoor unit surface by using a soft, dry cloth.

Regularly

Replace the remote control batteries. Once a year

Have a professional clean the condensate drain pipe.

Every 4 months

Have a professional clean the condensate drain pan.

Once a year

Outdoor unit

Have a professional clean the heat exchanger coils and the panel vents.

Once a year

Have a professional clean the fan. Once a year

Have a professional clean the condensate drain pan.

Once a year

Have a professional verify that all the fan assembly is firmly tightened.

Once a year

3M Filter

Air ﬁlter

MAINTENANCE

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NOTE

• The location and shape of the filters may differ, depending on the model.

• Make sure to clean the heat exchanger coils of the outdoor unit regularly, as dirt collected in the coils may decrease the operational efficiency or increase energy costs.

CAUTION

• Turn off the power before you perform any maintenance; otherwise it may cause electric shock.

• Never use water that is hotter than 104°F (40°C) when you clean the filters. It may cause deformation or discoloration.

• Never use volatile substances when you clean the filters. They may damage the surface of the product.

• Do not wash the 3M Filter with water, because the filter can be damaged.

MAINTENANCE

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Cleaning the air ﬁlter

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

1 Turn off the power to the unit. 2 Open the front cover.

- Lift up both sides of the cover slightly.

* Features may change according to the type

of model.

3 Hold the knob of the air filter, lift it up

slightly and remove it from the unit.

* Features may change according to the 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.

Cleaning the 3M Filter

1 Turn off the power to the unit. 2 Open the front cover and remove the air

filter (see “Cleaning air filter”).

3 Remove the 3M Filter.

* Features may change according to the type

of model.

4 Use a vacuum cleaner to remove dirt,

Do not wash the 3M Filter with water, because the filter can be damaged.

NOTE

• We suggest changing the 3M Filter every 6 Months

• The location of the filters may differ, depending on the model.

• If you need more filters, please contact the LG service center (Refer to the warranty card)

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Self-diagnosis function

This product has a built-in self-diagnosis function. If an error occurs, the lamp of the indoor unit will blink in 2 second intervals. If this occurs, contact your local dealer or service center.

Before requesting service

Please check the following before you contact the service center. If the problem persists, contact your local service center.

Problem Possible causes Corrective action

Abnormal operating conditions.

• There is a burning smell and a strange sound coming from the unit.

• Turn off the air conditioner, unplug the power cord, and contact a qualified HVAC technician.

• Water leaks from the indoor unit even when the humidity level is low.

• The power cord is damaged or generating excessive heat.

•

A switch, a circuit breaker (safety, ground) or a fuse is not operated properly.

• The unit generates an error code from its self-diagnosis.

The air conditioner does not work.

• The air conditioner is unplugged.

• Check whether the power cord is plugged into the outlet.

• A fuse is blown or the power supply is blocked.

• Replace the fuse or check if the circuit breaker has tripped.

• A power failure has occurred.

• Turn off the air conditioner when a power failure occurs.

•

When the power is restored, wait 3 minutes, and then turn on the air conditioner.

• The voltage is too high or too low.

• Check if the circuit breaker has tripped.

•

The air conditioner turned off automatically at a preset time.

• Press the power button again.

• Battery setting is wrong in the remote controller.

• Check to make sure that the batteries are inserted correctly in your remote control.

• If the batteries are placed correctly and the air- conditioner does not operate, replace the batteries and try again.

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Problem Possible causes Corrective action

The air conditioner does not generate cool air.

• Air is not circulating properly.

• Make sure that there are no curtains, blinds, or pieces of furniture blocking the front of the air conditioner.

• The air filter is dirty.

• Clean the air filter once every 2 weeks.

• See “Cleaning Air Filter” for more information.

• The room temperature is too high.

• In the summer, it may take some time to cool the indoor air fully. In this case, select the Jet Cool operation to cool indoor air quickly.

• Cold air is escaping from the room.

• Make sure that no cold air is escaping through ventilation points in the room.

• The desired temperature is higher than the set temperature.

• Set the desired temperature to a level lower than the current temperature.

• There is a heating source nearby.

• Avoid using heat generators like electric ovens or gas burners while the air conditioner is in operation.

• Air circulation operation is selected.

• In the air circulation operation, air blows from the air conditioner without cooling or heating the indoor air.

• Switch the operation mode to the cooling operation.

• Outside temperature is too high.

• The cooling effect may not be sufficient.

The air conditioner does not generate warm air.

Note : Heating is not available in all models.

•

When Heating Mode is started, the vane is almost closed and no air comes out, even though the outdoor unit is operating.

• This symptom is normal. Please wait until the unit has prepared enough warm air to blow through the indoor unit.

• The outdoor unit is in Defrosting Mode.

• In heating mode, ice/frost is built up on the coils when the outside temperature fall down. This function removes a layer of frost on the coil, and should be complete in approximately 15 minutes.

• Outside temperature is too low.

• The heating effect may not be sufficient.

It is not possible to adjust the fan speed.

• The Auto Operation, Jet Operation, or Dehumidification Operation is selected.

• In some operation modes you cannot adjust the fan speed. Select an operation mode in which you can adjust the fan speed.

It is not possible to adjust the temperature.

• The Air Circulation Operation or Jet Operation is selected.

• In some operation modes you cannot adjust the temperature. Select an operation mode in which you can adjust the temperature.

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Problem Possible causes Corrective action

The air-conditioner stops during operation.

• The air conditioner is suddenly turn off.

• The Timer Function may have timed out, which turns the unit off. Check the timer settings.

• A power failure has occurred during operation.

• Wait for the power to come back. If you have the Auto Restart Function enabled, your unit will resume its last operation several minutes after the power is restored.

Indoor unit is still operating even when the power has been turned off.

• Auto-Clean mode is being operated.

• Allow the Auto-Clean to continue as it removes any remaining moisture inside the indoor unit. If you do not want this feature to continue, you can turn the unit off.

The air outlet on the indoor unit is discharging mist.

• The cooled air from the air conditioner makes mist.

• When the room temperature decreases, this phenomenon will disappear.

Water leaks from the outdoor unit.

• In the heating operations, condensed water drop from the heat exchanger.

• This symptom need to install drain hose under the base pan. Contact the installer.

Operating noise or vibration.

• Clicking sound Clicking sound can be

heard either when the unit starts or stops due to movement of reversing valve.

• Creaking sound The plastic parts of the in-

door unit creak when shrinking or expanding due to sudden temperature changes.

• Flowing or Blowing sound This is the flow of refriger-

ant through the air conditioner.

• These are normal symptoms. The noise will stop.

The indoor unit gives out odor.

• Odors (such as cigarette smoke) may be absorbed into the indoor unit and discharged with airflow.

• If the smell does not disappear, you need to wash the filter. If this does not work, contact a qualified HVAC technician to clean your heat exchanger.

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