A noise occurs and the fan speed is low.
Has dust accumulated in the pre-filter?
Clean the pre-filter.
Has dust accumulated in the filter?
Replace the filter.
Air purification is not done properly.
Is the indoor pollution severe?
Ventilate indoors before using the product.
Has dust accumulated in the pre-filter?
Clean the pre-filter.
Has dust accumulated in the filter?
Replace the filter.
Are you using it in a place that is too spacious or too open?
Use a product that suits the size of the room.
Avoid well-ventilated places such as doors, windows, etc.
Is there an obstacle nearby?
Remove any nearby obstacles before operating the product.
Is the product installed in a corner?
Move the product and reinstall it.