The reset on my furnace tripped 2x in the last two days. I just had a tune up on it and the transformer changed. Can anyone give me some reasons. It is hot water heat. The burner is a Beckett. Thank you in advance.

Hey Big John, et al - Remember me? I had the problem a couple months ago whereby my furnace blower wouldn't shut off. As per your instructions, I hard-wired the stat, etc. Which turned on my ac condenser. We felt it was a bad stat till I went ahead & rewired the stat up. Then it worked. But only for awhile till one day, the blower was on even tho' the stat was off - same problem. The thread got to be REALLY long. Anyhoo - I can't find the thread. :) I've put dealing with this aside as we've had perfect weather. Now it's really cold and I have to get this fixed. Tried to turn on the heat and it doesn't kick in. Just the blower blowing room air. My guess is (like the AC), the heat would turn on if I hard-wired the stat. Can someone help me remember my options? Here's how I remember them. 1) Bad stat 2) Some wierd short in the wire from the furnace to the stat somewhere. Works off & on. 3) A part in the furnace area. I can't quite remember what it was. Was it a "contactor"??? So if I'm faced with the 3 above options - would one first buy a new stat? Then if that doesn't create an instant fix - somehow test that part (contactor?) in the furnace? Third would be to call an electrician? Would that be the correct order of events to do here? Sorry this is a long post. Lisa