Hi, my name is XXXXX XXXXX I have been in the home improvement and repair field for 20 years. I will be very glad to help you today. Is there any error message?
I would have thought a float issue and that could be the case but it is more than likely a control board issue. Are you going to do the repair yourself or are you looking for information before calling someone in?
If it isn't very old it is a warranty issue
If you look in the base plate of the dishwasher you will see a white coloured polystyrene float. When it rises it actuates a float switch that pulls the drain pump on.
If the float switch seems to not be sticking and we do conclude that it is a control board I would still contact Smeg first even though it is out of warranty. Sometimes manufacturers will still warranty out of warranty items. Worth a shot.
You are very welcome. Good luck, we're all counting on you!
I haven't heard from you. Was the information I provided helpful?