I have an older Marquis Spa with a Balboa control board. I filled the spa and then accidentally left the hose in and siphoned the water out. The system did not shut down on low flow because I had bypassed the flow switch. It shut off on high limit and I have a flashing heat light. I have refilled the spa and cannot get the system to restart. Can anyone tell me how to reset the board after a failure of this kind? The heat elements ohm out fine. It appears to just need a reset command of some sort.