When I hit the button to turn on the Pentair 140 heat pump, she goes on and off. I always have to hit the on button again. The pump is running at 3100 rpm so water is going to the heat pump. I do not have the heat pump on a timer. She is hot always with the mode showing the water temp. I asked my pool guy and the electrician about pump not being on a timer and they say. No problem. As long as you don't mind turning the pump on your self. Why is this heater not going on the first time ?