Note: The filter in the condensate container cleans the condensation water that is used during the dryer's automatic cleaning cycle. Emptying the condensate container is essential for a solid performance. It is the most important measure against condensation. Nevertheless, you also have to clean the condensate filter occasionally. These two methods are the best way to keep the condensate container really clean.
The procedure of cleaning the condensate filter in the condensate container is quick and easy. Only a few steps have to be followed. Make sure they are always done in the correct order. The cleaning of the condensate drain should be repeated occasionally and depend on the application.
How do I clean the filter on my condenser tumble dryer?
The filter in the condensate container cleans the condensation water that is used during the dryer's automatic cleaning cycle and should be checked regularly. By cleaning it under warm, running water or in the dishwasher, damages due to contamination can be avoided.

Step by step guide:
Get more information on how to solve other issues with your tumble dryer.
Troubleshooting overview for tumble dryer.