LG LRNU18GS3M0 (01) PDF Document

When the power cord of the LG LRNU18GS3M0 is to be replaced, replacement work shall be performed by authorized personnel only using only genuine replacement parts.

Installation work for the LG LRNU18GS3M0 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 LRNU18GS3M0 on a dedicated circuit. There is a risk of fire or electric shock.

For electrical work on the LG LRNU18GS3M0, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.

Yes, always ground the LG LRNU18GS3M0 product. There is a risk of fire or electric shock otherwise.

Install the panel and the cover of the control box securely on the LG LRNU18GS3M0. There is a risk of fire or electric shock otherwise.

Always install a dedicated circuit and breaker for the LG LRNU18GS3M0. Improper wiring or installation may cause fire or electric shock.

Use the correctly rated breaker or fuse for the LG LRNU18GS3M0. There is a risk of fire or electric shock otherwise.

Do not modify or extend the power cable of the LG LRNU18GS3M0. There is a risk of fire or electric shock.

Do not install, remove, or re-install the LG LRNU18GS3M0 unit by yourself (customer). There is a risk of fire, electric shock, explosion, or injury.

Be cautious when unpacking and installing the LG LRNU18GS3M0. 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 LRNU18GS3M0, always contact the dealer or an Authorized Service Center. There is a risk of fire, electric shock, explosion, or injury otherwise.

Do not install the LG LRNU18GS3M0 product on a defective installation stand. It may cause injury, accident, or damage to the product.

Be sure the installation area for the LG LRNU18GS3M0 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 LRNU18GS3M0 run 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 of the LG LRNU18GS3M0 could not be pulled out or damaged during operation. There is a risk of fire or electric shock.

Do not place anything on the power cable of the LG LRNU18GS3M0. There is a risk of fire or electric shock.

Do not plug or unplug the power supply plug of the LG LRNU18GS3M0 during operation. There is a risk of fire or electric shock.

Do not touch (operate) the LG LRNU18GS3M0 with wet hands. There is a risk of fire or electrical shock.

Do not place a heater or other appliances near the power cable of the LG LRNU18GS3M0. There is a risk of fire and electric shock.

Do not allow water to run into the electric parts of the LG LRNU18GS3M0. 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 LRNU18GS3M0. There is a risk of fire or failure of the product.

Do not use the LG LRNU18GS3M0 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 LRNU18GS3M0 on. Do not use the telephone or turn switches on or off. There is a risk of explosion or fire.

If strange sounds, smell, or smoke comes from the LG LRNU18GS3M0, 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 LRNU18GS3M0 from the window before the hurricane arrives. There is a risk of property damage, failure of product, or electric shock.

Do not open the inlet grille of the LG LRNU18GS3M0 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 LRNU18GS3M0 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 LRNU18GS3M0. There is a risk of fire, electric shock, or product damage.

Ventilate the room from time to time when operating the LG LRNU18GS3M0 together with a stove, etc. There is a risk of fire or electric shock otherwise.

Turn the main power off when cleaning or maintaining the LG LRNU18GS3M0. There is a risk of electric shock.

When the LG LRNU18GS3M0 is not going 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 related to the LG LRNU18GS3M0. This could result in personal injury and product damage.

Always check for gas (refrigerant) leakage after installation or repair of the LG LRNU18GS3M0. 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 LRNU18GS3M0 level even when installing the product to avoid vibration or water leakage.

Do not install the LG LRNU18GS3M0 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 LRNU18GS3M0 to avoid personal injury.

Do not install the LG LRNU18GS3M0 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.

Do not expose the skin directly to cool air from the LG LRNU18GS3M0 for long periods of time (don’t sit in the draft). This could harm your health.

Do not use the LG LRNU18GS3M0 for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system. There is a risk of damage or loss of property.

Do not block the inlet or outlet of air flow of the LG LRNU18GS3M0. It may cause product failure.

Use a soft cloth to clean the LG LRNU18GS3M0. Do not use harsh detergents, solvents, etc. 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 LRNU18GS3M0 product when removing the air filter. They are very sharp! There is a risk of personal injury.

Do not step on or put anything on the outdoor units of the LG LRNU18GS3M0 system. There is a risk of personal injury and failure of product.

Always insert the filter securely in the LG LRNU18GS3M0. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.

Do not insert hands or other objects through the air inlet or outlet of the LG LRNU18GS3M0 while the product is operated. There are sharp and moving parts that could cause personal injury.

Do not drink the water drained from the LG LRNU18GS3M0. It is not sanitary and could cause serious health issues.

Use a firm stool or ladder when cleaning or maintaining the LG LRNU18GS3M0. Be careful and avoid personal injury.

Replace all batteries in the remote control for the LG LRNU18GS3M0 with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is a risk of fire or explosion.

Do not recharge or disassemble the batteries for the LG LRNU18GS3M0 remote control. Do not dispose of batteries in a fire. They may burn or explode.

If the liquid from the batteries of the LG LRNU18GS3M0 remote control gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.

1. Contact an installation specialist for installation of the LG LRNU18GS3M0.

2. Use a dedicated circuit for the LG LRNU18GS3M0.

1. Being exposed to direct airflow from the LG LRNU18GS3M0 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.

2. Due to the possibility of oxygen deficiency, ventilate the room when the LG LRNU18GS3M0 is used together with stoves or other heating devices.

3. Do not use this LG LRNU18GS3M0 air conditioner for non-specified special purposes (e.g. preserving precision devices, food, pets, plants, and art objects). Such usage could damage the items.

1. Do not touch the metal parts of the LG LRNU18GS3M0 unit when removing the filter. Injuries can occur when handling sharp metal edges.

2. Do not use water to clean inside the LG LRNU18GS3M0 air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.

3. When cleaning the LG LRNU18GS3M0 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 LRNU18GS3M0 lights up during system operation, error code display, and auto restart setting.

The Sleep mode lamp on the LG LRNU18GS3M0 lights up during sleep mode auto operation.

The Timer lamp on the LG LRNU18GS3M0 lights up during timer operation or sleep mode auto operation.

The Defrost mode lamp on the LG LRNU18GS3M0 lights up during defrost mode or hot start operation (Heat pump model only).

The Plasma lamp on the LG LRNU18GS3M0 indicates its dynamic mode by using a multiple lighting system.

The Power Display on the LG LRNU18GS3M0 indicates the setting temperature and operation mode (Cooling, heating, auto operation, dehumidification mode).

Hot start operation on the LG LRNU18GS3M0 stops the indoor fan in heating operation for minutes to prevent cold air from blowing out from the unit.

In defrost mode, the LG LRNU18GS3M0 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 the operation of the LG LRNU18GS3M0.

Use the Operation Mode Selection Button on the wireless remote controller to select the desired operation mode for the LG LRNU18GS3M0.

Use the Room Temperature Setting Buttons on the wireless remote controller to select the desired room temperature for the LG LRNU18GS3M0.

Use the Indoor Fan Speed Selector on the wireless remote controller to select fan speed in four steps: low, medium, high, and Chaos for the LG LRNU18GS3M0.

Press the Jet Cool button on the wireless remote controller to operate the LG LRNU18GS3M0 at super high fan speed for speed cooling/heating.

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 LRNU18GS3M0.

Use the On/Off Timer Buttons on the wireless remote controller to set the time of starting and stopping operation for the LG LRNU18GS3M0.

Use the Time Setting Button on the wireless remote controller to adjust the time for the LG LRNU18GS3M0.

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 LRNU18GS3M0.

Use the Sleep Mode Auto Button on the wireless remote controller to set Sleep Mode Auto operation for the LG LRNU18GS3M0.

Use the Air Circulation Button on the wireless remote controller to circulate the room air with the LG LRNU18GS3M0 without cooling or heating.

Use the Room Temperature Button on the wireless remote controller to set the desired horizontal airflow direction for the LG LRNU18GS3M0.

Use the Plasma(optional) button on the wireless remote controller to start or stop the plasma-purification function for the LG LRNU18GS3M0.

Use the Horizontal Airflow Direction Control Button (optional) on the wireless remote controller to set the desired horizontal airflow direction for the LG LRNU18GS3M0.

Use the Reset Button on the wireless remote controller to initialize the remote controller for the LG LRNU18GS3M0.

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 LRNU18GS3M0.

Use the Auto Clean(optional) button on the wireless remote controller to set Auto Clean mode for the LG LRNU18GS3M0.

Aim the wireless remote controller at the signal receptor on the wired remote controller of the LG LRNU18GS3M0 to operate.

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 (ex: electronic quick start, ELBA, inverter type fluorescent lamp).

When performing maintenance on the LG LRNU18GS3M0, never use any of the following:

Water hotter than 40°C. Could cause deformation and/or discoloration.

Volatile substances. Could damage the surfaces of the air conditioner.

The air filters behind the front panel/grill of the LG LRNU18GS3M0 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 shade after washing and reinstall the filters back in place.

The plasma filters behind the air filter of the LG LRNU18GS3M0 should be checked and cleaned once every 3 months or more often if necessary.

Clean the plasma filters of the LG LRNU18GS3M0 with a vacuum cleaner. If it is dirty, wash it with water and dry well in shade, then install back in place.

Remove the deodorizer filters behind the air filter of the LG LRNU18GS3M0 and expose them in direct sunlight for 2 hours. Then insert these filters into their original position.

1. Open the upside of the panel and lift it up as shown in the manual. 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 as shown in the manual.

2. Then 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 LRNU18GS3M0 within 10 seconds after opening the inlet grille, as it may cause an electric shock.

1. Operate the LG LRNU18GS3M0 at the following settings for 2 to 3 hours:

Type of operation: Fan operation mode.

This will dry out the internal mechanisms.

2. Turn off the breaker for the LG LRNU18GS3M0.

1. Clean the air filter and install it in the indoor unit of the LG LRNU18GS3M0.

2. Check that the air inlet and outlet of the indoor/outdoor unit of the LG LRNU18GS3M0 are not blocked.

3. Check that the ground wire is connected correctly to the indoor unit side of the LG LRNU18GS3M0.

If the air filters of the LG LRNU18GS3M0 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 the LG LRNU18GS3M0. This is not good for health and wastes electricity.

Keep blinds or curtains closed. Do not let direct sunshine enter the room when the LG LRNU18GS3M0 air conditioner is in operation.

Adjust the vertical and horizontal airflow direction of the LG LRNU18GS3M0 to ensure a uniform temperature in the room.

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 using the LG LRNU18GS3M0.

Clean the air filter of the LG LRNU18GS3M0 regularly. Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects. Clean at least once every two weeks.

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 LRNU18GS3M0.

Check if you have made a mistake in timer operation for the LG LRNU18GS3M0.

Check if the fuse has blown or if the circuit breaker has been tripped for the LG LRNU18GS3M0.

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 absorbed by the LG LRNU18GS3M0.

Condensation occurs when the airflow from the LG LRNU18GS3M0 air conditioner cools the warm room air. This is usually normal.

This is the protector of the mechanism of the LG LRNU18GS3M0. Wait about three minutes and operation will begin.

Is the air filter dirty? See air filter cleaning instructions for the LG LRNU18GS3M0.

The room may have been very hot when the LG LRNU18GS3M0 air conditioner was first turned on. Allow time for it to cool down.

Has the temperature been set incorrectly for the LG LRNU18GS3M0?

Are the indoor unit’s air inlet or outlet vents of the LG LRNU18GS3M0 obstructed?

If you hear a noise that sounds like water flowing, this is the sound of freon flowing inside the LG LRNU18GS3M0 air conditioner unit.

If you hear a noise that sounds like compressed air releasing into the atmosphere, this is the sound of the dehumidifying water being processed inside the LG LRNU18GS3M0 air conditioning unit.

This sound from the LG LRNU18GS3M0 is generated by the expansion/constriction of the front panel, etc., due to changes in temperature.

After cleaning the filter of the LG LRNU18GS3M0, press the Timer button and the button of the wired remote controller at the same time for 3 seconds.

Check if the batteries are depleted in the remote control for the LG LRNU18GS3M0.

Check if the batteries are inserted in the opposite (+) and (-) directions.