If there are dusts, foreign materials, or obstacles in the way of wind from the air conditioner, the wind may collide them to increase noise of the wind.
If you put your hand or put an item in front of the fan, noise becomes louder.
Try this.
Clean the ultra-fine filter of the air conditioner.
➔ If the filter is covered with dust, cooling performance may be degraded, and may cause noise and condensation.
Remove the protective vinyl.
➔ If you fail removing the protective vinyl, the sheet may flutter by wind and cause noises.
This guide was created for all models, so the images or content may be different from your product.