I have a Miele Professional Tumble Dryer PT 7136 that will not work as it says that the fluff filter compartment needs closing when it is closed

Nicky, February 2023

This might help

https://m.youtube.com/watch?v=TPpP-CRfCLA

Ehrhd, February 2023

Double check it IS truly closed, properly and
that any tabs, pins or tongues that operate any sending switch aren't broken or distorted.

Check the switch that detects whether the fluff filter compartment is closed

Failing that, you're chasing loose wires and that the switch is actually switching.

Ehrhd, February 2023