I'm hoping to get some pointers.
Now that the weather is getting cooler again, I went out to get the garage gas furnace going again. I lit the pilot light the turned up the thermostat. The furnace fired up just like normal . Waited a while but the fan did not turn on. Then of course the furnace shut down to, what I assuming, to be a safty feature since the fan did not start up. My thermostat has the option for the fan to be "On" or "Auto". Nether would start the fan. The fan turns freely and worked just fine when I turned it off at the start of summer. Any ideas?