if that's happening then get a new charger if that doesn't work try to take it back to the place you got it they can check it out if you cant try using a charger that fits but not that exact charger.

if its an old dishwasher it probably something inside somebody might have had the same problem and then tried to fix it and put the wires and the electricity on the inside of the dishwasher kinda short out so its probably because the people who used it before wired it wrong.