your a star, brillent just saved me £105, done as you said the black small hose seamed to be clear and at the bottom it was connected directly into the drum, but disconnected the large hose that runs into the filter an by putting my fingers in i could feel a build up of detergent/scum build up, but by blowing down small hose connected at top to preassure switch was able to clear, machine now working fine for a VERY gratefull missus, many thanks, forrums like this are great
Mr grateful, November 2010