The gas filter (Zeolite filter) may be dirty or may have reached the end of its life
- Clean the gas filter or replace it
Perhaps you use the appliance in a room in which the ambient air quality is very poor
- In this case, open windows to improve the air circulation
Perhaps you use the appliance in a room that is much bigger than the room size the appliance is intended for.
- Put the appliance in a smaller room. The recommended room size is up to:
- 20m² for AC4054/AC4055 and AC4052/AC5053
- 40m² for AC4064/AC4065 and AC4062/AC4063