dustin

I have a simular problem, I will turn the T stat....relay will click and recirc pump flows. I can measure only 1/2 of the contactor getting power....It will run for about 15 secs then turn off. If I turn dial down then back up it will start over. If I turn on the main pumps the sencond side of the contactor for the heat will get power...Everything will stay running entill I turn off the main pump....Once I turn off the main pump, the heater stopps heating and the pump wont fire up again...I have to turn the heater dial down and then up to start the process all over.. Any Ideas would be great.