Furnace malfunctioning
My furnace stopped coming on in the middle of the night, so I had to use the stove for awhile. I kept a fan on, and a small window open to vent any excess CO. Not an efficient way to heat. Later, ...
Forum Discussion
Rmack1 wrote:
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.
Bummer. Can you hear clicking at the furnace? Or just the thermostat itself? If you hear clicking at the furnace, then:
- Make sure you have adequate voltage to the furnace. Like someone else said, that's a 12V furnace. Being plugged in doesn't guarantee you have adequate voltage to it
- Make sure the fan spins freely
- See if you can get the fan to start by spinning it by hand first
If all of the above checks out and it still doesn't work, I'd suspect a bad control board (specifically the fan relay on it).
The fan starting is the very first in the sequence of events that will ultimately lead to heat. No fan = no fire = no heat.
