Overheating getting OHH error. I have a proform spa with 2 pumps, the first pump having 2 speeds. My tub heats up to desired temp and then shuts off as it is supposed to. When the heater turns back on, the pump (pump 1, low) does not start/circulate water causing an overheat. Short term solution has been to push the button to reactivate the pump and then it heats back up again. This works until the tub heats back up again, shuts off, heater turns back on and another OHH... Daily problem and sometimes the system locks me out and doesnt let the pump turn back on for a while. It is not an airlock, I have removed the pump on a couple occasions. Wondering if this is a pump problem or circuit board problem. Pump works fine when running but just doesnt turn on when the heater does. Any help or advice would be appreciated.