In searching this forum, I found a similar (but much older) post that asks this question. I have the equipment mentioned in the title, but my blower fan does not kick on during Auto cycling. When the fan setting is On, I get heat, but obviously the blower runs 24/7 and is costing me big. The controller turns on the igniter, but the blower is never activated. Is my problem as simple as replacing the controller, or am I missing a bad sensor somewhere? Thoughts on how to diagnose? Thanks!