LG LRNU12GSEB0 (01) PDF Document

Contact the authorized service technician for repair or maintenance of your LG LRNU12GSEB0 unit.

Contact the installer for installation of your LG LRNU12GSEB0 unit.

No, the LG LRNU12GSEB0 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 LRNU12GSEB0 air conditioner.

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

Installation work for the LG LRNU12GSEB0 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. Use the LG LRNU12GSEB0 appliance on a dedicated circuit. There is a risk of fire or electric shock.

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the LG LRNU12GSEB0 product. There is a risk of fire or electric shock.

Always ground the LG LRNU12GSEB0 product. There is a risk of fire or electric shock.

Install the panel and the cover of the control box securely. There is a risk of fire or electric shock.

Always install a dedicated circuit and breaker for the LG LRNU12GSEB0. Improper wiring or installation may cause fire or electric shock.

Use the correctly rated breaker or fuse for the LG LRNU12GSEB0. There is a risk of fire or electric shock.

Do not modify or extend the power cable. There is a risk of fire or electric shock.

Do not install, remove, or re-install the LG LRNU12GSEB0 unit by yourself (customer). There is a risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing the LG LRNU12GSEB0 product. Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

For installation of the LG LRNU12GSEB0, always contact the dealer or an Authorized Service Center. There is a risk of fire, electric shock, explosion, or injury.

Do not install the LG LRNU12GSEB0 product on a defective installation stand. It may cause injury, accident, or damage to the product.

Be sure the installation area does not deteriorate with age. If the base collapses, the LG LRNU12GSEB0 air conditioner could fall with it, causing property damage, product failure, and personal injury.

If the LG LRNU12GSEB0 air conditioner runs for a long time when the humidity is very high and a door or a window is left open, moisture may condense and wet or damage furniture.

Take care to ensure that the power cable could not be pulled out or damaged during operation of the LG LRNU12GSEB0. There is a risk of fire or electric shock. Do not place anything on the power cable. There is a risk of fire or electric shock.

Do not plug or unplug the power supply plug during operation of the LG LRNU12GSEB0. There is a risk of fire or electric shock.

Do not touch (operate) the LG LRNU12GSEB0 product with wet hands. There is a risk of fire or electrical shock.

Do not place a heater or other appliances near the LG LRNU12GSEB0 power cable. There is a risk of fire and electric shock.

Do not allow water to run into the electric parts of the LG LRNU12GSEB0. It may cause a risk of fire, failure of the product, or electric shock.

Do not store or use flammable gas or combustibles near the LG LRNU12GSEB0 product. There is a risk of fire or failure of the product.

Do not use the LG LRNU12GSEB0 product in a tightly closed space for a long time. Oxygen deficiency could occur.

When flammable gas leaks, turn off the gas and open a window for ventilation before turning the LG LRNU12GSEB0 product on. Do not use the telephone or turn switches on or off. There is a risk of explosion or fire.

If strange sounds, or small or smoke comes from the LG LRNU12GSEB0 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 LRNU12GSEB0 product from the window before the hurricane arrives. There is a risk of property damage, failure of the product, or electric shock.

Do not open the inlet grill of the LG LRNU12GSEB0 product during operation. Do not touch the electrostatic filter, if the unit is so equipped. There is a risk of physical injury, electric shock, or product failure.

When the LG LRNU12GSEB0 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 LRNU12GSEB0 product. There is a risk of fire, electric shock, or product damage.

Ventilate the room from time to time when operating the LG LRNU12GSEB0 together with a stove, etc. There is a risk of fire or electric shock.

Turn the main power off when cleaning or maintaining the LG LRNU12GSEB0 product. There is a risk of electric shock.

When the LG LRNU12GSEB0 product is not to be used for a long time, disconnect the power supply plug or turn off the breaker. There is a 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 LRNU12GSEB0. This could result in personal injury and product damage.

Always check for gas (refrigerant) leakage after installation or repair of the LG LRNU12GSEB0 product. Low refrigerant levels may cause failure of the product.

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

Keep the LG LRNU12GSEB0 product level even when installing it to avoid vibration or water leakage.

Do not install the LG LRNU12GSEB0 product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors.

Use two or more people to lift and transport the LG LRNU12GSEB0 product to avoid personal injury.

Do not install the LG LRNU12GSEB0 product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.

Being exposed to direct airflow from the LG LRNU12GSEB0 for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time.

Due to the possibility of oxygen deficiency, ventilate the room when the LG LRNU12GSEB0 is used together with stoves or other heating devices.

Do not use the LG LRNU12GSEB0 air conditioner for non-specified special purposes (e.g. preserving precision devices, food, pets, plants, and art objects). Such usage could damage the items.

Do not touch the metal parts of the LG LRNU12GSEB0 unit when removing the filter. Injuries can occur when handling sharp metal edges.

Do not use water to clean inside the LG LRNU12GSEB0 air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.

When cleaning the LG LRNU12GSEB0 unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit’s power is accidentally triggered on while cleaning inner parts of the unit.

The On/Off lamp on the LG LRNU12GSEB0 lights up during system operation, error code, and auto restart setting.

The Sleep mode lamp on the LG LRNU12GSEB0 lights up during sleep mode auto operation.

The Timer lamp on the LG LRNU12GSEB0 lights up during timer operation or sleep mode auto operation.

The Defrost mode lamp on the LG LRNU12GSEB0 lights up during defrost mode or hot start operation (Heat pump model only).

The Plasma function on the LG LRNU12GSEB0 illustrates its dynamic mode by using a multiple lighting system.

The Power Display on the LG LRNU12GSEB0 indicates the setting temperature and operation mode (Cooling, heating, auto operation, dehumidification mode).

Hot start operation for the LG LRNU12GSEB0 stops the indoor fan in heating operation for minutes to prevent cold air from blowing out from the unit.

In defrost mode, the LG LRNU12GSEB0 unit stops heating operation for a few minutes to remove the formation of ice on the heat exchanger coils to maintain efficiency.

Press the Start/Stop Button on the wireless remote controller to start or stop operation of the LG LRNU12GSEB0.

Use the Operation Mode Selection Button on the wireless remote controller to select the operation mode for the LG LRNU12GSEB0.

Use the Room Temperature Setting Buttons on the wireless remote controller to select the room temperature for the LG LRNU12GSEB0.

Use the Indoor Fan Speed Selector on the wireless remote controller to select the fan speed for the LG LRNU12GSEB0 in four steps: low, medium, high, and Chaos.

Press the Jet Cool button on the wireless remote controller to activate speed cooling/heating at a super high fan speed for the LG LRNU12GSEB0.

Use the Chaos Swing Button on the wireless remote controller to stop or start louver movement and set the desired up/down airflow direction for the LG LRNU12GSEB0.

Use the On/Off Timer Buttons on the wireless remote controller to set the time of starting and stopping operation for the LG LRNU12GSEB0.

Use the Time Setting Button on the wireless remote controller to adjust the time.

Use the Timer Set/Cancel Button on the wireless remote controller to set the timer when the desired time is obtained and to cancel the Timer operation for the LG LRNU12GSEB0.

Use the Sleep Mode Auto Button on the wireless remote controller to set Sleep Mode Auto operation for the LG LRNU12GSEB0.

Use the Air Circulation Button on the wireless remote controller to circulate the room air without cooling or heating with the LG LRNU12GSEB0.

Use the Horizontal Airflow Direction Control Button (optional) on the wireless remote controller to set the desired horizontal airflow direction for the LG LRNU12GSEB0.

Use the Plasma button (optional) on the wireless remote controller to start or stop the plasma-purification function for the LG LRNU12GSEB0.

Press the Reset Button on the wireless remote controller to initialize it.

Use the 2nd F Button on the wireless remote controller prior to using modes printed in blue at the bottom of buttons for the LG LRNU12GSEB0.

Use the Auto Clean button (optional) on the wireless remote controller to set Auto Clean mode for the LG LRNU12GSEB0.

Aim the wireless remote controller at the signal receptor to operate the LG LRNU12GSEB0. The remote control signal can be received at a distance of up to about 7m. Be sure that there are no obstructions between the remote controller and the signal receptor. Do not drop or throw the remote controller. Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or any other heat source. Block a strong light over the signal receptor with a curtain or etc. so as to prevent abnormal operation (e.g., electronic quick start, ELBA, inverter type fluorescent lamp).

Before performing any maintenance on the LG LRNU12GSEB0, turn off the main power to the system. Never use water hotter than 40°C, as it could cause deformation and/or discoloration. Never use volatile substances, as they could damage the surfaces of the air conditioner.

The air filters behind the front panel/grill of your LG LRNU12GSEB0 should be checked and cleaned once every 2 weeks or more often if necessary. Clean the filters with a vacuum cleaner or warm soapy water. If dirt is not easily removed, wash with a solution of detergent in lukewarm water. Dry well in the shade after washing and reinstall the filters back in place.

The plasma filters behind the air filter of your LG LRNU12GSEB0 should be checked and cleaned once every 3 months or more often if necessary. Clean the filters with a vacuum cleaner. If it is dirty, wash it with water and dry well in the shade, then reinstall it in place.

Remove the deodorizer filters behind the air filter of your LG LRNU12GSEB0 and expose them to direct sunlight for 2 hours. Then, insert these filters into their original position.

Open the upside of the panel and lift it up. The hooks of the panel will come off. Remove the air filters. Then pull out the plasma filter. After cleaning and drying well, reinstall the filters in their original position.

Open the front panel. Then pull the filter tab slightly forward to remove the air filter. After removing the air filter, remove the plasma and deodorizer filter by slightly pulling forward.

Do not touch the plasma filter of the LG LRNU12GSEB0 within 10 seconds after opening the inlet grille, as it may cause an electric shock.

Operate the LG LRNU12GSEB0 air conditioner in Fan operation mode for 2 to 3 hours to dry out the internal mechanisms. Then, turn off the breaker. Turning off the breaker is important because dirt may collect and cause a fire if left powered.

Clean the air filter and install it in the indoor unit. Check that the air inlet and outlet of the indoor/outdoor unit are not blocked. Check that the ground wire is connected correctly; it may connect to the indoor unit side.

If the air filters of the LG LRNU12GSEB0 become clogged with dust, the cooling capacity will drop, and 6% of the electricity used to operate the air conditioner will be wasted.

Do not overcool the room with your LG LRNU12GSEB0. 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 LRNU12GSEB0 air conditioner is in operation.

Adjust the vertical and horizontal airflow direction to ensure a uniform temperature in the room with your LG LRNU12GSEB0.

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 LRNU12GSEB0 is operating.

Clean the air filter of your LG LRNU12GSEB0 regularly. Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects. Clean at least once every two weeks.

Since windows are kept closed, it is a good idea to open them and ventilate the room now and then, even when using your LG LRNU12GSEB0.

Check if you have made a mistake in timer operation. Also, check if the fuse has blown or if the circuit breaker has been tripped.

Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room, as this can be mistaken for an odor from the LG LRNU12GSEB0.

Condensation occurs when the airflow from the LG LRNU12GSEB0 air conditioner cools the warm room air.

This is a protector of the mechanism. Wait about three minutes and operation will begin.

Check if the air filter is dirty and clean it if necessary. Consider if the room was very hot when the LG LRNU12GSEB0 was first turned on and allow time for it to cool down. Verify if the temperature has been set incorrectly. Check if the indoor unit’s air inlet or outlet vents are obstructed.

A noise that sounds like water flowing is the sound of freon flowing inside the LG LRNU12GSEB0 air conditioner unit. A noise that sounds like compressed air releasing into the atmosphere is the sound of dehumidifying water being processed inside the LG LRNU12GSEB0 air conditioning unit.

This sound is generated by the expansion/constriction of the front panel, etc., due to changes in temperature within the LG LRNU12GSEB0.

After cleaning the filter of your LG LRNU12GSEB0, press the Timer button and the set temperature up/down button of the wired remote controller at the same time for 3 seconds.

Check if the batteries are depleted. Also, check if the batteries are inserted in the opposite (+) and (-) directions.