I started a new load of laundry and the water just kept coming... it overflowed a little bit but luckily my drain pan caught most of it. What do I need to replace?
The first thing to check is the pressure hose. Check for cracks or holds in it, check to make sure that it is not clogged. Also make sure that the air dome that the pressure hose connects to is not clogged. If these check ok then the pressure switch would be the most likely cause for the failure.