I would be grateful of any advice I have a Servis M3024 on prog 7 for spin the drum just rotates back words and forwards refusing to spin, i checked motor brushes which are fine i removed the electronic module had a a fiddle about with wiring starting to spin now, will it require a new module.
Also, check belt tension – it should be extremely tight – none of the old 1/2″ deflection on the longest run. It will also refuse to spin if it thinks it’s full of water.
Beyond that, it will be a rather more technical problem and Pro help might be your best option.