On this page, you will find more information about the most common causes and most relevant solutions for the Washer & Dryer error 'F21'. Do you need help straight away? Visit our support page.
We've created a list of solutions which you can follow if you want to solve this Washer & Dryer problem yourself. Do you need more help? Visit our support page if you need professional support with Washer & Dryer right away.
The thermistor resistance has drifted or the temperature scanning sequence is incorrect.
Do you still have problems with this error? Try one of the quick fixes below or leave a comment.