Have HVAC Questions? Ask an HVAC Expert for Answers
Hello, the problem could be a bad printed circuit board (70% chance) if you want to do a heat stress test on it let me know and I will coach you on heating the board up to 125F with a hair drier.
The problem could also be an intermittently failing flame sensor rod ( 20% chance) solution clean the flame sensor rod.
There is also a pretty good chance that the high temperature safety cut out switch has been tripping (make sure you have a clean air filter in the furnace).
If you rate those answers positively, I will coach you without a time limit on trouble shooting these items depending on your skill levels