Hello all! Im having a strange issue. I have a two zone house, with one furnace and one ac unit. Zone 1 and Zone 2 thermostats can successfully ask for air and heat and get them independently of one another. But when neither is calling for air, and I turn Zone 1 fan from Auto to On, I get no fan while if I turn Zone 2 fan on, the fan turns on and blows on both sides (with Zone 1 on Auto or On). Is this likely a wiring issue or is it a master/slave setup? I wouldn't think its master/slave since I can get heat and ac independently.
Thanks for the help!
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