Hi, First timer here. During this very cold spell in Pa. my aux heat and emergency heat are not working. No worries though, I have been using Kero to heat the house. I have talked to many people and visited many sites to determine the problem. Voltage could be set wrong(been here for about 4 years and back up heat has never worked good), one of the relay stages could be bad and needs replaced. Any other ideas and how much do you think this will cost me? Need to fix soon, Kero is expensive!