I am trying to setup a Honeywell RTH9580 to recirculate air based on temp. The system in question is a single air handler/condenser central air system. What will happen is the 2nd floor tends to be much warmer then the first due to the T-Stat being located on the first floor. So in an attempt to help this situation, I installed a Xiaomi temp sensor on the second floor and setup Core to control the house fan based on a set temperature. But what I found was that the thermostat did not change modes from Auto to Fan On. No matter what I tried, Core just did not adjust the fan mode. I could in fact adjust the mode in the Smartthings app though.
Wondering if anyone has some recommendations for a smart app or if there is a trick to get core to work properly. Thanks.