I have a Bryant 376CAV model. The heater will try to come on, it lights for about 9 seconds then goes out. The fans will then run for 90 secs and will shut down. After a while it may do this for a few times and then it will stay off until I turn off the breaker and turn it back on.

If your unit has a flame sensor clean it with steel wool or fine sand paper.

Boy, those images are going to get worn out soon. You have been posting the often enough.

Yep but no one ever uses the search engine to find solutions so I keep posting them. I guess I will just have to find some new ones. LOL