This is the "Suburban furnace won't heat" topic, but there is a new issue. Yesterday I was able to get a new igniter plus igniter and burner door gaskets. Turned out the no-start problem was the igniter, but now I'm checking the flame for the first time, and it's the dreaded "high yellow." I have the manual and am reading how to adjust the flame, but could anybody say it in other words or give any suggestions what to do.
Back with a modification. The manual says to clean the burner assembly with a wire brush and blow out any dust, which I did. I noted a hairline crack that goes over the top half of the tube. I reassembled the furnace, and for a second there, I thought the flame was blue, but it turned into the big yellow flame. I'm going to buy a new burner assembly.
Is there some kind of gas adjustment? I have to assume that was set correctly. Since I've never looked at the little flame window before, who knows how long this has been burning yellow.
If this turns out to be a simple replacement of the igniter and burner assembly and gaskets, it sure was an easy task. Well, not counting the learning curve. And two 90-mile round trips to Springfield for parts.