Plumbing Questions? Ask a Plumbing Expert.
Hello, if water got on the printed circuit board, remove it, and dry it out for 5 hours in an oven running no hotter than 140F... replace the card. If that fails you most likely will need a new printed circuit board.
The odds of this being a correct diagnosis without tests is in the 80 to 90% range, if you need to get into it deeper, see the link below. Let me know what you would like to do.