Self-Diagnosis Function

This appliance has a built-in Self-Diagnosis function. If an error occurs, the LED of the indoor unit will flash in 2-second intervals. If this occurs, contact your local dealer or service centre.

Operation

The appliance does not work normally.Burning smell and strange sounds are coming from the appliance.Turn off the appliance, switch off or disconnect the power supply, and contact a service centre.Water leaks from the indoor unit even when the humidity level is low.Turn off the appliance, switch off or disconnect the power supply, and contact a service centre.The power cable is damaged or it is generating excessive heat.Turn off the appliance, switch off or disconnect the power supply, and contact a service centre.A switch, a circuit breaker (safety, ground) or a fuse is not operating properly.Has the fuse blown or has the circuit breaker been tripped?Turn off the appliance, switch off or disconnect the power supply, and contact a service centre.The appliance generates an error code from its self-diagnosis.Turn off the appliance, switch off or disconnect the power supply, and contact a service centre.The fan speed cannot be adjusted.The Jet mode or Auto Operation mode is selected.In some operating modes, you cannot adjust the fan speed. Select an operating mode in which you can adjust the fan speed.The airflow generated by the air conditioner may be automatically adjusted during operation.When the air conditioner reaches the set temperature, it reduces the airflow rate to avoid generating cool airflow when heating, or to minimize energy consumption and indoor humidity change when cooling.The temperature cannot be adjusted.The Fan mode or Jet mode is selected.In some operating modes, you cannot adjust the temperature. Select an operating mode in which you can adjust the temperature.The appliance stops during operation.The appliance is suddenly turned off.The Off Timer function may have timed out, which turns the appliance off. Check the timer settings.Have you made a mistake in timer operation?Set the timer correctly.A power failure has occurred during operation.Wait for the power to come back on. If you have the Auto Restart function enabled, your appliance will resume its last operation several minutes after power is restored.The appliance does not work.A fuse blew or the power supply is blocked.Replace the fuse or check if the circuit breaker has tripped.The appliance is unplugged.Check whether the power cord is plugged into the outlet or the power isolators are switched on.A power failure has occurred.Turn off the appliance when a power failure occurs.When the power is restored, wait 3 minutes, and then turn on the appliance.The voltage is too high or too low.Check if the circuit breaker has tripped.The appliance was turned off automatically at a preset time.Turn the appliance on.The battery orientation in the wireless remote control is incorrect.Make sure that the batteries are inserted correctly in your wireless remote control.If the batteries are placed correctly, but the appliance still does not operate, replace the batteries and try again.Are the indoor unit's air inlet or outlet vents obstructed?Remove the obstacles.The appliance does not emit cool air.Air is not circulating properly.Make sure that there are no curtains, blinds, or pieces of furniture blocking the front of the appliance.The air filter is dirty.Clean the air filter once every 2 weeks.See “Cleaning the Air Filter” for more information.The room temperature is too high.In summer, cooling the indoor air fully may take some time. In this case, select the Jet mode to cool the indoor air quickly.The room may have been very hot when the room air conditioner was first turned on. Allow time for it to cool down.Cold air is escaping from the room.Make sure that no cold air is escaping through the ventilation points in the room.The desired temperature is higher than the current 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.Fan mode is selected.During Fan mode, air blows from the appliance without cooling or heating the indoor air.Switch the operating mode to a cooling operation.Outside temperature is too high.The cooling effect may not be sufficient.The appliance does not emit warm air.When the Heating mode starts, the vane is almost closed, and no air comes out, even though the outdoor unit is operating.This is normal. Please wait until the appliance has generated enough warm air to blow through the indoor unit.The outdoor unit is in Defrosting mode.In Heating mode, ice and frost is built up on the coils when the outside temperature falls. The Defrosting mode reduces a layer of frost on the coil, and it should finish in approximately 15 minutes.Outside temperature is too low.The heating effect may not be sufficient.The air conditioner changes generated airflow during operation.When the appliance reaches the desired temperature, the airflow rate reduces in order to avoid generating cool airflow during heating, or to minimize energy consumption and indoor humidity change during cooling.This symptom is normal.It seems that condensation is leaking from the air conditioner.Condensation occurs when the airflow from the air conditioner cools the warm room air.This symptom is normal.

Performance

The indoor unit is still operating even when the appliance has been turned off.The Auto Clean function is being operated.Allow the Auto Clean function to continue since it reduces any remaining moisture inside the indoor unit. If you do not want this function, you can turn the indoor unit off.The air outlet on the indoor unit is discharging mist.The cooled air from the appliance makes mist.When the room temperature decreases, this phenomenon will disappear.Water leaks from the outdoor unit.In the heating operations, condensed water drops from the heat exchanger.Install a drain hose under the base pan. Contact the installer.There is noise or vibration.A clicking sound can be heard when the appliance starts or stops due to movement of the reversing valve.Creaking sound: The plastic parts of the indoor unit creak when they shrink or expand due to sudden temperature changes.Noise is normal during or after operation. It is not a sign of malfunction.Flowing sound: This is the flow of refrigerant through the appliance.Blowing sound: This sound generates when compressed air is released into the atmosphere.This is the sound of the dehumidifying water being processed inside the air conditioning unit.These are normal symptoms. The noise will stop.Crack sound is heard.This sound is generated by the expansion or constriction of the front panel, etc. due to changes of temperature.These are normal symptoms. The noise will stop.The indoor unit gives off an odour.Odours (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 the service centre to clean your heat exchanger.Check that this is not a damp smell exuded by the walls, carpet, furniture or cloth items in the room.If the smell comes out from walls, carpet, furniture or cloth item, clean it.Remote control display is faint, or no display at all.Are the batteries depleted?Replace the batteries with a new one.Are the batteries inserted in the opposite + and - directions?Make sure that the + and – terminals of the batteries are oriented correctly.

Wi-Fi

Your appliance and smartphone are not connected to the Wi-Fi network.The password for the Wi-Fi that you are trying to connect to is incorrect.Find the Wi-Fi network connected to your smartphone and remove it, then register your appliance on LG ThinQ.Mobile data for your smartphone is turned on.Turn off the Mobile data of your smartphone and register the appliance using the Wi-Fi network.The wireless network name (SSID) is set incorrectly.The wireless network name (SSID) should be a combination of English letters and numbers. (Do not use special characters.)The router frequency is not 2.4 GHz.Only a 2.4 GHz router frequency is supported. Set the wireless router to 2.4 GHz and connect the appliance to the wireless router. To check the router frequency, check with your Internet service provider or the router manufacturer.The distance between the appliance and the router is too far.If the distance between the appliance and the router is too far, the signal may be weak and the connection may not be configured correctly. Move the location of the router so that it is closer to the appliance.