Yes it was just rattling around in the base. I reassembled everything last night without the filter and set it running on a rinse. That ran fine so I put it on a full wash overnight with one of those finish dishwasher cleaner bottles and got up this morning to find it had run the whole cycle fine
Cheers for your help, a total positive result at no cost, fantastic
If the filter is an inlet valve filter then does that mean I need to dissasemble again to put it in?
What do you need a filter on the inlet valve for anyway? surely it's clean water going in? Our house is entirely mains with no cold water tank so it's even drinking water going into our dishwasher.
Cheers again for the help