Hi. I had the same problem with my Blomberg machine. I'm not sure if this will help but it fixed my problem, so may work for you. At the rear of outer drum at the bottom is a small pipe about 1/4 wide connected to an elbow pushed into the outer drum. This leads up to a diaphragm type device at the top of the machine. Its obviously an air pressure sensitive switch, what it does I'm not sure!! Anyway I found the elbow was blocked with soap powder slurry, in my machine its a tight push fit. remove the elbow, clean out all debris, clean its locating hole and refit. blow up the pipe and you should hear a click from the diaphragm. I guess its water level sensor, but how it ties in with the spin, again I'm not sure!! It worked for me so may be worth a try! Obviously disconnect from the mains first!!!
Paul, January 2008