I've got a Zanussi built in dishwasher. Model number ZD122001XA. It seems to be stuck on a drain cycle. We put the machine on one evening and came down in the morning to find it was still going. Opened the door and the machine didn't turn off. Seems to be the drain cycle. If you pour water into the machine it sucks it straight away but it keeps on going. Is this something that can be fixed without an engineer?

Dave Conley, November 2017