Clean the humidity sensor
1. Clean the humidity sensor every 3 months.
2. Wait for the tumble dryer to cool down before cleaning the humidity sensor.
3.
Unplug the tumble dryer from the mains power.
4.
Open the door.
5. Locate the humidity sensor.
6.
Using a soft non-abrasive cloth soaked in vinegar wipe the metal surfaces of the humidity sensor.
7.
Thoroughly dry the humidity sensor using a dry soft non-abrasive cloth.
8.
Close the door.
9.
Plug the tumble dryer back into the mains power.