Quote:
Originally Posted by Scott Douglas
Yeah, our furnace is up in the attic. I'm not as spry as I used to be so I'm not about to go up there to mess with it.
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Okay, turn the furnace off at the breaker. Tie the R and W wire together at the thermostat. Turn the furnace back on at the breaker and see what happens. If the furnace runs and the house warms, it's the thermostat. If it short cycles, limit. And no worries about zapping anyone if you follow my directions. Plus you're on the low voltage (24v) side when working at the thermostat. Just make sure you turn the breaker off, remove the red (R terminal) wire from it's terminal, Remove the white (W terminal) wire from its terminal, twist the two together and turn the furnace back on. You'll probably hear the fan cycle for about 30 seconds when you power it back on then it'll start going into a heating cycle.
If you're not comfortable messing with it I get it. But with the breaker off for the furnace you shouldn't have any worries and 24v just gives you a nice little tingle. If you'd feel better, I can PM you my phone number and talk you through the whole process. I even promise not to yell DON'T DO THAT while you're messing with the wires.