Re: Zanussi DE6544
This sounds like the classic problem with the IWMS set up. This is a matrix moulding on the side of the dishwasher whose function is is to distribute the incoming water to the different parts of the dishwasher. Over time, it collects sludge and food detritus, leading to the exact symptoms you have described. The only proper repair is to replace the IWMS assembly; a job best left to a professional I’m afraid to say.
Click the link below to find a UKW repairer in your area.
Regards,
Penguin45.