Chances are that Honeywell is going to play dumb with you. There is no DIY on this site, so I doubt you'll get much help here either. Both for the same reasons of you probably aren't qualified to work on this equipment and you can screw something up or hurt yourself. I'm not insulting you, just that is the way 98% of the general population is. Maybe you're the other 2%, but nobody has anyway of knowing. The best thing to do is call out another hvac company in your area to fix the thing.
I like DIY'ers. They pay better to fix.