I have an old Goodman Janitrol, GMP series furnace. I turned on the heat today at the thermostat by popping the heat up to 75 and sticking it on auto. Nothing. I put in on "ON" and I get cold air ablowin'. I crawled up there to check it out. Turned off heat, turned off power to furnace. Followed the "operating instructions." I turned the knob clockwise to off, waited five minutes, counterclockwise on. Same problems. Any ideas? Bad thermostat?
Thought I'd give this a shot before calling Mr. Fixit.
Thanks in advance for any help!
J

I had that last year, and for me, it needed a new thermostat. That was all.

I had that last year, and for me, it needed a new thermostat. That was all.

Really? Both problems and just a thermostat! Did you just get one and replace and try it or did you look at the thing and see something wrong? That thing doesn't look hard to replace...