Dec 21 It's the End of the World

[O'Dell]

Thanks Bawanna, but it appears that the crisis has been averted. After I last posted, I decided that I had nothing to lose, so I went up in the attic and began tracing the wiring in the furnace. I found a ground wire that seemed to be making intermittent contact, and I secured it. The furnace has been working properly for four hours, w/o the starting and stopping as before. The tech was going to charge $350 for a new board. I'll pay him for a service call, but I question his expertise since someone with no knowledge of furnaces fixed it.

BTW, the cat is happy now.

[JFootin]

Glad you got it fixed so your house will be comfortable for Christmas, O'Dell. Merry Christmas!

[Tinman507]

As a former tech, I am very disappointed in your tech. Actually, I prefer to be known as a mechanic as opposed to tech. Mechanics fix stuff. Techs change parts. That's frankly all they're taught these days. Change out circuit board.
The ground likely was putting a fault code into the board. But instead of isolating it and discovering the board was good, he did the quick & dirty and ordered a board. Only to arrive later with new board and still having the problem. Of course he'd have installed the new board and charged you for that plus the extra time to ring out the wiring.