Welcome, from another Plano-ite
I was running systems checks on our new trailer, prior to the maiden voyage and the furnace would start, ignition would click, burner would start, it would run for a few seconds and then shut off. That sequence would repeat 2 more times and then it would quit.
I did some digging and found the drain pipe for the kitchen sinks had been cut, by the bozo that roto-zipped the hole in the outside wall for the electrical outlet and water had dumped into the furnace, while I was running the kitchen sinks.
I called my dealer (5 hours away in LA) and they over-nighted me the new controller.
The furnace had to be removed to replace it, but it was not that big of a job and the new board corrected the problem.
Ping me if you have any questions.
-Brian