It sounds like a spark trying to start. YOu hear what sounds like a flame for a few seconds and then off. Sometimes the heat works fine and other times it will shut off when it says it is still on.
Any suggestions would be greatly appreciated! I have had this happen a couple times before and am trying to figure it out. The most recent time, someone came out about a month ago and replaced a part for me. On my thermostat, sometimes it says that the heat is on when it is not. I can tell when...