Hello, my partners DIshwasher has an intermittent fault that appears at 22 mins from end of cycle. It makes a loud hi pitched squealing noise which actually wakes her up!!! It sounds like motor bearings, I think. The machine does not advance any further but doesn’t turn itself off. The machine is heating water and pumping out ok. My question is this: is the drying phase active ie any fan involved? If not, any ideas what could be the problem? It’s not doing it every time, either! It’s doing my head in!!!!