I have looked at this dishwasher the other day. To be honest it is not one i know an awful lot about.Fault was that tap symbol was lit. When I arrived the machine obviously had a flooded base as drain pump was running with door open.Pumped out base.Could not see any leaks on test. Checked fill matrix. I see it has a flow meter built in like w/pool. Checked reed sw and cleaned connector. The only thing i didnt do was remove aquastop to check inline filter. Cupboard back would need a lot of dismantling to get at it. Ran machine through a couple of fills no problem. Phone call next day to say it was showing tap symbol again.