Here, the days and nights have been a little cooler. Have not needed the Air Conditioning, but at night I felt like we could use a little more heat. So I have been running the furnace once or twice a day.
Last night I set the the control up to 73 degrees Fartenfute(sp error intentional) and after the set temperature was made, I turned the control back to like 66. As I hoped the furnace did not kick on all night. Finally sometime around mid-day the wife started complaining about being cold, even though it was a nice 67 in the house. After setting a new higher temperature the furnace turned on and I thought, soon my Dearest of Heart would be warm again. However it did not take me long to notice that there was no hot air issuing from the vents. I gave it a couple of minutes more to be sure, and then said dang, I guess the pilot light went out.
I went to the basement to light the pilot light, made sure I had all the tools I needed, opened the front of the furnace, and...
My first thought, where did all this fuzz and fluff come from, but then the fluff moved and jumped to the ground to prove itself to be a squirrel. whaaa!!! How does a squirrel survive in the exhaust area of my furnace??? Then I had to figure out, how do you get a squirrel to leave your basement? That wasn't really too hard. I opened the basement door, and turned out all the lights. It took awhile but the smart little rodent found her/his way to freedom, now back to the furnace!
The pilot light was still burning, so hey home free right? But following all logical steps the burners were not lighting up!!?! whaaaa??!!??!? My first thoughts were somehow the squirrel had left behind a bunch of fuzz and gunk that clogged the burners thus preventing ignition. I vacuumed and other wise cleaned all I could see and think of, and of course the pilot light went out, dang it. Turned out I had to replace the thermocouple. And still the burners did not light up ??!???? My Dearest of Heart urged me to call our favorite repair guy, but I am almost a stubborn as she is. And I did notice a wire that seemed to be broken and just hanging, which it turned out was the problem.
So somehow the trapped squirrel had chewed through the wire that would energize the gas solenoid to allow the gas to flow and turn on the burners. I named him MacGyver, and the furnace is working as it should.