I am using four new thermostats and ISY 99i v 2.7.9
the new thermostat controller monitors the state of the main unit as well as the cool control, fan control, and the heat control (as separate controls). for some reason, certain thermostat fan controls read "ON" at the specific control level even though the fan is off. at the main control level, the fan control is set to "AUTO".
to temporarily resolve the issue, i remove the module from my ISY, add it back, and it resolves for some period of time... but then it happens again within a few days.