I had the same issue with the learning thermostat (gen 3). I want to turn on all my house’s exhaust fans whenever my furnace runs. I run the furnace fan for 30 minutes every hour but the state won’t change from idle when the scheduled fan turns on. State only changes when heating, cooling or when I run the fan manually. I just got the gen 4 learning thermostat and lo and behold, I get an error trying to add it to smartthings via matter. I’m going to reach out to smartthings to try to diagnose the issue, and I’ll update this thread if I figure it out and the state changes correctly.
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