I have an intertherm e2series 015. The Heater fan doesn't always come on. You turn on the airconditioning and the fan comes on every time. But the heater won't come on sometimes, I reset the breaker on the fusepanel and that usually gets it going again. But recently that doesn't even do it. I've come home to a 50 degree house more often than not recently.I did replace the capacitor a couple of weeks ago and it seemed to be working better. But this week its been going off and staying off. Any suggestions?