I had this, sent the board to EMW. They sent it back with a note that this machine leaks from the hose at the top of the tub or dispenser and shorts the pump. I covered the pump when fitting the new board.
Rob
Blocked pump will do it every time some of the core boards werent programed correctly . WONT TIME OUT so it trys to pump out till the triac burns out ..allegedly so i here on the grape vine .. but hay thats just my opinion….