LG LRNU24GS3W0 (01) PDF Document

It is important to read the owner’s manual carefully and thoroughly before installing and operating your LG LRNU24GS3W0 room air conditioner.

You should retain this owner’s manual for future reference after reading it thoroughly.

Inside, you will find many helpful hints on how to use and maintain your LG LRNU24GS3W0 properly. A little preventive care can save you a great deal of time and money over the life of your air conditioner. You will also find many answers to common problems in the chart of troubleshooting tips. Reviewing these tips first may prevent the need to call for service.

You should contact an authorized service technician for repair or maintenance of your LG LRNU24GS3W0.

You should contact the installer for the installation of your LG LRNU24GS3W0.

No, the LG LRNU24GS3W0 air conditioner is not intended for use by young children or invalids without supervision.

Young children should be supervised to ensure that they do not play with the LG LRNU24GS3W0 air conditioner.

When the power cord is to be replaced, replacement work shall be performed by authorized personnel only using only genuine replacement parts for the LG LRNU24GS3W0.

Installation work for the LG LRNU24GS3W0 must be performed in accordance with the National Electric Code by qualified and authorized personnel only.

Do not use a defective or underrated circuit breaker with the LG LRNU24GS3W0. This appliance should be used on a dedicated circuit to avoid the risk of fire or electric shock.

For electrical work related to the LG LRNU24GS3W0, contact the dealer, seller, a qualified electrician, or an Authorized Service Center to prevent the risk of fire or electric shock.

Yes, always ground the LG LRNU24GS3W0 to prevent the risk of fire or electric shock.

Install the panel and the cover of the control box securely on the LG LRNU24GS3W0 to prevent the risk of fire or electric shock.

Always install a dedicated circuit and breaker for the LG LRNU24GS3W0. Improper wiring or installation may cause fire or electric shock.

Use the correctly rated breaker or fuse with the LG LRNU24GS3W0 to prevent the risk of fire or electric shock.

No, do not modify or extend the power cable of the LG LRNU24GS3W0, as there is a risk of fire or electric shock.

No, you should not install, remove, or re-install the LG LRNU24GS3W0 unit by yourself as a customer. There is a risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing the LG LRNU24GS3W0. Sharp edges could cause injury, so be especially careful of the case edges and the fins on the condenser and evaporator.

For installation of the LG LRNU24GS3W0, always contact the dealer or an Authorized Service Center, as there is a risk of fire, electric shock, explosion, or injury if not done correctly.

No, do not install the LG LRNU24GS3W0 product on a defective installation stand, as it may cause injury, accident, or damage to the product.

Be sure the installation area for the LG LRNU24GS3W0 does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

Do not let the LG LRNU24GS3W0 run for a long time when the humidity is very high and a door or a window is left open, as moisture may condense and wet or damage furniture.

Take care to ensure that the power cable for the LG LRNU24GS3W0 could not be pulled out or damaged during operation, as there is a risk of fire or electric shock.

No, do not place anything on the power cable of the LG LRNU24GS3W0, as there is a risk of fire or electric shock.

No, do not plug or unplug the power supply plug of the LG LRNU24GS3W0 during operation, as there is a risk of fire or electric shock.

No, do not touch or operate the LG LRNU24GS3W0 product with wet hands, as there is a risk of fire or electrical shock.

No, do not place a heater or other appliances near the power cable of the LG LRNU24GS3W0, as there is a risk of fire and electric shock.

No, do not allow water to run into the electric parts of the LG LRNU24GS3W0. It may cause fire, product failure, or electric shock.

No, do not store or use flammable gas or combustibles near the LG LRNU24GS3W0 product, as there is a risk of fire or product failure.

No, do not use the LG LRNU24GS3W0 product in a tightly closed space for a long time, as oxygen deficiency could occur.

If flammable gas leaks, turn off the gas and open a window for ventilation before turning on the LG LRNU24GS3W0. Do not use the telephone or turn switches on or off, as there is a risk of explosion or fire.

If strange sounds, a smell, or smoke comes from the LG LRNU24GS3W0 product, turn the breaker off or disconnect the power supply cable. There is a risk of electric shock or fire.

Stop operation and close the window in a storm or hurricane. If possible, remove the LG LRNU24GS3W0 product from the window before the hurricane arrives. This prevents property damage, product failure, or electric shock.

No, do not open the inlet grill of the LG LRNU24GS3W0 product during operation. Do not touch the electrostatic filter, if the unit is so equipped, as there is a risk of physical injury, electric shock, or product failure.

If the LG LRNU24GS3W0 product is soaked (flooded or submerged), contact an Authorized Service Center. There is a risk of fire or electric shock.

Be cautious that water could not enter the LG LRNU24GS3W0 product, as there is a risk of fire, electric shock, or product damage.

Ventilate the room from time to time when operating the LG LRNU24GS3W0 together with a stove, etc., to avoid the risk of fire or electric shock.

Turn the main power off when cleaning or maintaining the LG LRNU24GS3W0, as there is a risk of electric shock.

When the LG LRNU24GS3W0 product is not used for a long time, disconnect the power supply plug or turn off the breaker. This prevents the risk of product damage or failure, or unintended operation.

Take care to ensure that nobody could step on or fall onto the outdoor unit of the LG LRNU24GS3W0, as this could result in personal injury and product damage.

Always check for gas (refrigerant) leakage after installation or repair of your LG LRNU24GS3W0, as low refrigerant levels may cause product failure.

Install the drain hose for the LG LRNU24GS3W0 to ensure that water is drained away properly. A bad connection may cause water leakage.

Keep the LG LRNU24GS3W0 level even when installing the product to avoid vibration or water leakage.

Do not install the LG LRNU24GS3W0 where the noise or hot air from the outdoor unit could damage the neighborhoods, as it may cause a problem for your neighbors.

Use two or more people to lift and transport the LG LRNU24GS3W0 product to avoid personal injury.

Do not install the LG LRNU24GS3W0 product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product, particularly on the condenser and evaporator fins, which could cause product malfunction or inefficient operation.

Do not expose your skin directly to cool air from the LG LRNU24GS3W0 for long periods of time (do not sit in the draft), as this could harm your health.

No, do not use the LG LRNU24GS3W0 product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system, and such usage could result in risk of damage or loss of property.

No, do not block the inlet or outlet of the airflow on the LG LRNU24GS3W0, as it may cause product failure.

Use a soft cloth to clean the LG LRNU24GS3W0. Do not use harsh detergents, solvents, etc., as there is a risk of fire, electric shock, or damage to the plastic parts of the product.

Do not touch the metal parts of the LG LRNU24GS3W0 product when removing the air filter, as they are very sharp and could cause personal injury.

No, do not step on or put anything on the outdoor units of the LG LRNU24GS3W0, as there is a risk of personal injury and product failure.

Always insert the filter securely. Clean the filter of the LG LRNU24GS3W0 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.

No, do not insert hands or other objects through the air inlet or outlet of the LG LRNU24GS3W0 while the product is operated, as there are sharp and moving parts that could cause personal injury.

No, do not drink the water drained from the LG LRNU24GS3W0 product, as it is not sanitary and could cause serious health issues.

Use a firm stool or ladder when cleaning or maintaining the LG LRNU24GS3W0 product. Be careful and avoid personal injury.

Replace all batteries in the remote control for the LG LRNU24GS3W0 with new ones of the same type. Do not mix old and new batteries or different types of batteries, as there is a risk of fire or explosion.

No, do not recharge or disassemble the batteries for the LG LRNU24GS3W0 remote control, and do not dispose of batteries in a fire, as they may burn or explode.

If the liquid from the batteries of the LG LRNU24GS3W0 remote gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked, as the chemicals in batteries could cause burns or other health hazards.

1. Contact an installation specialist for installation of the LG LRNU24GS3W0.

2. Use a dedicated circuit for the LG LRNU24GS3W0.

1. Avoid exposing occupants, pets, or plants to direct airflow from the LG LRNU24GS3W0 for extended periods, as it could be hazardous to health.

2. If the LG LRNU24GS3W0 is used together with stoves or other heating devices, ventilate the room due to the possibility of oxygen deficiency.

3. Do not use the LG LRNU24GS3W0 for non-specified special purposes (e.g., preserving precision devices, food, pets, plants, and art objects), as such usage could damage the items.

1. Do not touch the metal parts of the LG LRNU24GS3W0 unit when removing the filter, as injuries can occur when handling sharp metal edges.

2. Do not use water to clean inside the LG LRNU24GS3W0 air conditioner, as exposure to water can destroy the insulation, leading to possible electric shock.

3. When cleaning the LG LRNU24GS3W0 unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation, and there is a possibility of injury if the unit’s power is accidentally triggered on while cleaning inner parts of the unit.

The “On/Off” lamp lights up during the system operation, error code, and auto restart setting of the LG LRNU24GS3W0.

The “Sleep mode” lamp lights up during sleep mode auto operation of the LG LRNU24GS3W0.

The “Timer” lamp lights up during timer operation or sleep mode auto operation of the LG LRNU24GS3W0.

The “Defrost mode” lamp lights up during defrost mode or hot start operation (for Heat pump models only) of the LG LRNU24GS3W0.

Hot start operation stops the indoor fan in heating operation for minutes to prevent cold air from blowing out from the LG LRNU24GS3W0 unit.

In defrost mode, the LG LRNU24GS3W0 unit stops heating operation for a few minutes to remove the formation of ice on the heat exchanger coils, maintaining efficiency.

The “Plasma” function illustrates its dynamic mode by using a multiple lighting system on the LG LRNU24GS3W0.

The “Power Display” indicates the setting temperature and operation mode (Cooling, heating, auto operation, dehumidification mode) on the LG LRNU24GS3W0.

The “Operation indication screen” displays information about the current operation of the LG LRNU24GS3W0.

The “Swirl button” function is not available on the wired remote controller for the LG LRNU24GS3W0.

The function of the “2ndF button” is to access secondary functions on the wired remote controller for the LG LRNU24GS3W0.

This button is used for setting and canceling the timer, program, week, holiday, adjusting hour/minute, setting, clearing, and ventilator functions on the wired remote controller for the LG LRNU24GS3W0.

The “Set temperature button” is used to set the desired temperature on the wired remote controller for the LG LRNU24GS3W0.

The “ON/OFF button” is used to turn the LG LRNU24GS3W0 unit on or off via the wired remote controller.

The “Fan operation” button is used to control the fan operation mode on the wired remote controller for the LG LRNU24GS3W0.

The “Operation mode selection button” is used to select the operating mode (e.g., cooling, heating) on the wired remote controller for the LG LRNU24GS3W0.

The “Fan speed button” is used to adjust the fan speed on the wired remote controller for the LG LRNU24GS3W0.

The “Horizontal/Vertical air flow direction button (option)” is used to control the direction of the airflow horizontally and vertically on the wired remote controller for the LG LRNU24GS3W0.

The “Room temperature” display shows the current room temperature on the wired remote controller for the LG LRNU24GS3W0.

The “Plasma button” is used to activate or deactivate the Plasma function on the wired remote controller for the LG LRNU24GS3W0.

The “Time reset button” is used to reset the time settings on the wired remote controller for the LG LRNU24GS3W0.

The “Operation lamp” indicates the operational status of the LG LRNU24GS3W0 via the wired remote controller.

The “Start/Stop Button” on the wireless remote controller for the LG LRNU24GS3W0 starts operation when it is pressed.

The “Operation Mode Selection Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to select the operation mode.

The “Room Temperature Setting Buttons” on the wireless remote controller for the LG LRNU24GS3W0 are used to select the room temperature.

The “Indoor Fan Speed Selector” on the wireless remote controller for the LG LRNU24GS3W0 is used to select fan speed in four steps: low, medium, high, and Chaos.

The “Jet Cool” function on the wireless remote controller for the LG LRNU24GS3W0 operates speed cooling/heating at a super high fan speed.

The “Chaos Swing Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to stop or start louver movement and set the desired up/down airflow direction.

The “On/Off Timer Buttons” on the wireless remote controller for the LG LRNU24GS3W0 are used to set the time of starting and stopping operation.

The “Time Setting Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to adjust the time.

The “Timer Set/Cancel Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to set the timer when the desired time is obtained and to cancel the Timer operation.

The “Sleep Mode Auto Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to set Sleep Mode Auto operation.

The “Air Circulation Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to circulate the room air without cooling or heating.

The “Plasma (optional) button” on the wireless remote controller for the LG LRNU24GS3W0 is used to start or stop the plasma-purification function.

The “Horizontal Airflow Direction Control Button (optional)” on the wireless remote controller for the LG LRNU24GS3W0 is used to set the desired horizontal airflow direction.

The “Reset Button” on the wireless remote controller for the LG LRNU24GS3W0 is used to initialize the remote controller.

The “2nd F Button” on the wireless remote controller for the LG LRNU24GS3W0 is used prior to using modes printed in blue at the bottom of buttons.

The “Auto Clean (optional) button” on the wireless remote controller for the LG LRNU24GS3W0 is used to set Auto Clean mode.

1. Aim the wireless remote controller at the signal receptor on the indoor unit to operate the LG LRNU24GS3W0.

2. The remote control signal can be received at a distance of up to about 7m.

3. Ensure there are no obstructions between the remote controller and the signal receptor.

4. Do not drop or throw the remote controller.

5. Do not place the remote controller in a location exposed to direct sunlight, near a heating unit, or any other heat source.

6. Block strong light over the signal receptor with a curtain or similar to prevent abnormal operation (e.g., from electronic quick start, ELBA, inverter type fluorescent lamps).

Before performing any maintenance on the LG LRNU24GS3W0, turn off the main power to the system. Never use water hotter than 40°C, as it could cause deformation and/or discoloration. Do not use volatile substances, as they could damage the surfaces of the air conditioner.

The air filters behind the front panel or grill of the LG LRNU24GS3W0 should be checked and cleaned once every two weeks or more often if necessary. Clean the filters with a vacuum cleaner or warm soapy water. If dirt is not easily removed, wash them with a solution of detergent in lukewarm water. Dry them well in the shade after washing and reinstall them back in place.

The plasma filters behind the air filter of the LG LRNU24GS3W0 should be checked and cleaned once every three months or more often if necessary. Clean the filters with a vacuum cleaner. If they are dirty, wash them with water and dry them well in the shade, then install them back in place.

Remove the deodorizer filters behind the air filter of the LG LRNU24GS3W0 and expose them to direct sunlight for two hours. Then insert these filters into their original position.

1. Open the upside of the panel and lift it up as shown. The hooks of the panel will come off.

2. Remove the air filters.

3. Then pull out the plasma filter.

After cleaning and drying well, reinstall the filters in their original position.

1. Open the front panel.

2. Pull the filter tab slightly forward to remove the air filter.

3. After removing the air filter, remove the plasma and deodorizer filter by slightly pulling forward.

Do not touch the plasma filter of the LG LRNU24GS3W0 within 10 seconds after opening the inlet grille, as it may cause an electric shock.

1. Operate the LG LRNU24GS3W0 air conditioner at the following settings for 2 to 3 hours: Fan operation mode. This will dry out the internal mechanisms.

2. Turn off the breaker for the LG LRNU24GS3W0.

It is important to turn off the breaker when the LG LRNU24GS3W0 is not going to be used for a long time, as dirt may collect and may cause a fire.

1. Clean the air filter and install it in the indoor unit of the LG LRNU24GS3W0. (Refer to page 12 for cleaning it.)

2. Check that the air inlet and outlet of the indoor/outdoor unit of the LG LRNU24GS3W0 are not blocked.

3. Check that the ground wire is connected correctly. It may be connected to the indoor unit side of the LG LRNU24GS3W0.

If the air filters of the LG LRNU24GS3W0 become clogged with dust, the cooling capacity will drop, and 6% of the electricity used to operate the air conditioner will be wasted.

No, do not overcool the room when operating the LG LRNU24GS3W0. This is not good for your health and wastes electricity.

Keep blinds or curtains closed. Do not let direct sunshine enter the room when the LG LRNU24GS3W0 air conditioner is in operation.

Adjust the vertical and horizontal airflow direction to ensure a uniform temperature in the room when operating the LG LRNU24GS3W0.

Make sure that the doors and windows are shut tight. Avoid opening doors and windows as much as possible to keep the cool air in the room when the LG LRNU24GS3W0 is operating.

Clean the air filter regularly. Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects. Clean at least once every two weeks for your LG LRNU24GS3W0.

Yes, ventilate the room occasionally. Since windows are kept closed, it is a good idea to open them and ventilate the room now and then when using the LG LRNU24GS3W0.

1. Check if you have made a mistake in timer operation.

2. Check if the fuse has blown or if the circuit breaker has been tripped for the LG LRNU24GS3W0.

Check that the peculiar odor is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room, which might be mistaken for an odor from the LG LRNU24GS3W0.

Condensation occurs when the airflow from the LG LRNU24GS3W0 air conditioner cools the warm room air.

This is a protective mechanism for the LG LRNU24GS3W0. You should wait about three minutes, and then operation will begin.

1. Is the air filter dirty? Refer to air filter cleaning instructions.

2. The room may have been very hot when the LG LRNU24GS3W0 air conditioner was first turned on. Allow time for it to cool down.

3. Has the temperature been set incorrectly?

4. Are the indoor unit’s air inlet or outlet vents obstructed?

1. A noise that sounds like water flowing: This is the sound of freon flowing inside the LG LRNU24GS3W0 air conditioner unit.

2. A noise that sounds like compressed air releasing into the atmosphere: This is the sound of the dehumidifying water being processed inside the LG LRNU24GS3W0 air conditioning unit.

This sound is generated by the expansion/constriction of the front panel, etc., of the LG LRNU24GS3W0 due to changes in temperature.

After cleaning the filter of the LG LRNU24GS3W0, press the Timer button and the down arrow button of the wired remote controller at the same time for 3 seconds to turn off the “Filter sign lamp (LED)”.

1. Are the batteries depleted?

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

The outdoor side of the LG LRNU24GS3W0 is water resistant. The indoor side is not water resistant and should not be exposed to excess water.