I went back today. I checked all the wires and could find no damage. I disconnected and reconnected all the plugs on the main board (the one mounted on the back), the hose was clear and the switch seemed to be working ok. Plugged it in, turned it on, and within a minute, I got the beeping PE error without even pressing start again. I did locate a pressure switch today, so I thought I would try it just in case, no luck. same error.
I guess it did something to the board, or its just coincidence. Cant think of anything else it could be.