I just posted an issue I have been having with my Jacuzzi J-315 circuit board. In my case, the phone looking cable (flat with phone connectors on each end) socket on the circuit board was loose and when there was any pressure or knock to the cabinet, one or the other of signals or events would happen. If you (after killing the power) take off the circuit box cover and find the wire between your control panel and the circuit board, see if that connector is loose. That may not be your problem, but from what I have read, a circuit board is either good or bad, and won't work at all if it's bad.