How can we reset our tumbledryer?

1. Turn the tumble dryer on, then turn it off again.
2. Press and hold the start button until you hear a buzzer noise.
3. Quickly turn the tumble dryer back on, and you will see the word "demo" flashing on the screen.
4. Release the start button as soon as you see the "demo" flashing.
5. The demo message will disappear, and your tumble dryer should be reset.

It's important to note that you need to complete steps 2 and 3 quickly without any pause to ensure the reset works properly.