I don’t know the model numbers much where Miele are concerned but if it’s over 5 years old or has had particularly heavy use, you may find this thread of some help http://www.ukwhitegoods.co.uk/forumsphpbb3/viewtopic.php?f=3&t=64603&hilit=Miele
Miele always tuck a full circuit diagram in somewhere usually behind the front panel in a plastic bag and stuck in with double sided tape.
It’s in German of course but they provide a sheet giving translation of all terms.
Mike.