I have a Comfortmaker model GUI075A012BIN. Here is what it is doing. The furnace kicks on like usual, the first fan/motor, but it just keeps on going and going and the flame never ignites, nor does it try to. And I cant get an error code out of it. I turned the whole thing off for a few and turned it back on, but still the same thing. I have had trouble with the rod that goes in the flame before and replaced it a few years ago. It did act up with that again about a week ago, I had to go clean it, then it worked just fine. But this new issue is not acting the same, so I don't think that's what it is. Any ideas?