I had a feeling about this. 3 weeks after my complete Goodman\Amana HP intsall, the installers came by today with the IAQ thermostat. I gatta admit, the AHU fan comes on.., and Emergency heat seems to work, but that's about it. The OD unit will not come on in either heat or cooling mode.
After 3 hours, I heard alot of cussing in my attic. They left and will be back in the morning. Since I'm traveling Sunday, I hope they will just hook up the old Tstat for now.
Who recommends these things anyway?.. And why did I listen to him..LOL (kidding here BT)