My MiniMax heater is short cycling. On for about 30 seconds then off about the same. I removed the flow switch and it seems to ne operational. Not sure how to test it. I checked the outputs and get 9.25K ohms between them whether the water is flowing or not. When unplugged the heater doesn't start at all and if I short the inputs to the control board it doesn't start either. Anyone know what the output of the switch should be? I'm not sure how to verify if the switch is bad.