This dishwasher fills then goes into drain mode I had the front base plate off there was water in the base cleared water out but still goes on to drain after fill my question is how does this dishwasher measure the water I suspect metering tank blocked I can’t see a pressure switch or an impeller jug trouble is the dishwasher is jammed in due to flooring till customer sorts it is there a circuit board on the metering tank to measure water intake