could be the door interlock that is faulty and it will need replacing with a new one.part around £25.you have to release the rubber door gasket from the front cabinet by releasing the plastic band that secures it to the front cabinet and then undo the 2 screws that hold the door interlock onto the cabinet.remove the wiring from the door interlock and pressure hose and refit the wires and pressure hose in the same place on the new one.
ck
April 2009