I managed to disable the scheduling system, as even that was too smart for me (I had similar troubles as you). All it does now is: set temperature; allow switch

I managed to disable the scheduling system, as even that was too smart for me (I had similar troubles as you). All it does now is: set temperature; allow switching between heat, cold, both, or none; allow turning on fan-only for X hours. Maybe yours wasn't wired correctly for the fan? No idea.