1) Open the air quality sensor door.
2) Clean the lens and dust inlet/outlet with a lightly moistened cotton swab.
Afterwards, dry the lens and dust inlet/outlet with a dry cotton swab.
3) Close the air quality sensor door.
When the humidity level in the room is very high, it is possible that condensation develops on the
air quality sensor. As a result, the air quality light may indicate that the air quality is bad even though it is
good. In this case, you have to clean the air quality sensor on a periodically basis, i.e. every 2 months.