Re: SMEG DWI 710
I wonder if the pressure switch isn’t cutting in, and after a default time it stops the fill and switches on the drain pump for a set period which is not long enough to empty the now over-full machine?
If thats the case then the fill matrix must be blocked or the pressure switch itself (or associated wiring) faulty, or possibly even the pcb controller.
Power off if investigating yourself or if you need professional help you could try the Repairs@ link below.