[LG Air Conditioner Check] How to inspect your system air conditioner when you use it for the first time in summer

Causes and Symptoms

Try this

Has the circuit breaker for the air conditioner tripped?

➔ If the exclusive circuit breaker for the air conditioner has tripped, reset the circuit breaker.

The circuit breaker is usually installed by the front door entrance or on the wall inside the shoe rack, and is marked as [air conditioner] or [A/C], and in some cases, an additional circuit breaker is also installed on the wall of the outdoor unit room.
If the circuit breaker is not set to on, electricity will not be supplied to the air conditioner, so, it won't operate.

Check the condition of the wireless remote controller.

➔ Replace the batteries with new ones.

The batteries may have been discharged, so open the cover on the back of the remote control and replace the batteries with new ones.
Then, press the [Run/Stop] button on the remote control to see if the display window turns on.
If nothing appears on the display window or letters appear and then disappear after fitting new batteries, your remote control may be inoperative.
Contact the LG Electronics service center.

Check if the wireless controller is set to ‘All Indoor Units’.

If you don’t activate indoor unit selective control, make sure that the indoor unit selection on the wireless remote controller screen is set to ‘All’.
If set to 1, 2, 3 or 4, it might fail to operate.
If not set to ‘All’, then use the ‘Indoor Selection’ button on the remote controller to select ‘All’ and press the Start button.
Each time you press the [Select Indoor Unit’ button of the remote controller, it toggles in the order : All -> 1 -> 2 -> 3 -> 4.

Is the vent window for the outdoor unit room closed?

Open wide the ventilation window (gallery) in the outdoor unit room.
If you use the product without opening the gallery in the outdoor unit room, cold air may not come out due to an increase in the temperature of the outdoor unit.
Remove any obstacle from around the outdoor unit to ensure sufficient effective ventilation.

※ If the neighboring temperature of the outdoor unit rises above 35℃(95°F), the performance might be degraded.

Check the condition of the remote controller.

➔ Check if the remote controller is set to cooling mode.

If you set it to fan mode/heating mode, then there will be no cold wind.
Select the cooling mode and set the target temperature to 18℃(66.4°F)and operate the air conditioner for 5 minutes and see if cooling works fine.

Has it been a while since you cleaned the filter?

➔ Separate and clean the filter.

If there is dust or alien substance in the filter, then the fan speed can get reduced or cooling performance can get degraded.

This guide was created for all models, so the images or content may be different from your product.