turbojimmy wrote:
If moving the thermostat back and forth allows it to work again, then it's probably the thermostat. I had to replace both of mine last season. They did the same thing - audible click at the furnace but nothing else. Furnaces would work fine for a while, but then not fire up for seemingly no reason (usually in the middle of the night). I haven't had any issues since replacing the thermostats.
Well, I installed a new thermostat, but it still doesn't work. It clicks when I move it back and forth, but no fan, no heat.