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[LG Air Conditioner Operation][Buried Duct] Cooling is failed. Cooling is weak. Heating is failed. Heating is weak

Repair

Causes and Symptoms

  • Filter is clogged by lots of dusts.
  • Wind outlet vent is adjusted incorrectly.

Try this

Has it been more than a month since the last cleaning of the filter?

➔ If there are too much dusts in the filter, then heating or cooling might fail or be weak.

Did you try to adjust the wind outlet vent?

➔ Depending on the adjustment of the wind outlet vent, cooling or heating might be weaker.

Adjust the wind outlet vent by opening or closing it.

During cooling operation, if cold air does not spread widely but only certain areas are cold

If the circular adjustment fan of the wind outlet vent is closed fully, then air flows will be directed downward.
Turn the wind outlet vent CCW to make sure that the circular fan sticks out of the reference plane on the ceiling.
Cold air spreads widely in the big space. (Cold air moves downward.)

During heating operation, if warm wind does not reach the bottom

If the circular adjustment fan of the wind outlet vent is fully opened, air flows will not reach the bottom but only stay around the ceiling.
Turn the circular fan CW to make sure that it is above the reference plane on the ceiling.
As hot wind is concentrated on the bottom, it improves the heating performance.

※ Direction of cold/hot wind due to the adjustment of the circular fan at the wind outlet vent

Image of airflow intake type during cooling and heating
Wait! Find out more.
Turn the circular fan CW to raise it, Turn it CCW to lower it.
(It requires adequate wind outlet vent control suitable for heating and cooling.)

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

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