how can I fix my Hygena AHY 8102/1 dishwasher?

After cleaning (moved the door seal) the dishwasher started spurting water out of the bottom of the door, not continuously but every now and again. My wife stopped the machine, switched it off and emptied it. I got a repairman in who said it needed a new door seal and lower spray arm, which I ordered on line then fitted them. I switched on the machine again but it seems to be stuck in some part of the cycle and although I have left it on for hours, it will not do anything. Can you please advise.