In the alarm.com tstat empower settings you can only set fan “circulate” setting when unit is OFF. It is not a selectable fan option in any other HVAC mode.
You cannot for example, set HEAT mode with fan on CIRCULATE and have the fan actually circulate.
So the bug is either:
When blower fan circulate is in use and system is OFF, setting the system to either HEAT or COOL or EMER should reset FAN mode to AUTO, but it doesn’t, and even though FAN mode shows “circulate” it doesn’t actually operate per “circulate” settings
FAN “circulate” should be a functional and selectable option under all modes, but it isnt.
I use circulate all the time. It is a optimal way to equalize cold and hot spots in the home. IMO it is a PITA that you actually have to shut off the system, in order to address hot and cold spots throughout home by circulating the air. This fan selection should be an functional option in all operating modes.
Perhaps if the “Fan Schedule rule” was actually remotely useable (but it isnt, as you can only select one run time period, per day, and you cannot create multiple fan schedule run rules). Most other fan schedules allow multiple run times per day.
Tstat “bug” non-operable FAN mode in HEAT mode: