If I remember correctly the newer Carrier Infinity Controllers (BASE non-zoned), do a static pressure check right after locating the installed equipment.
Maybe I just imagined this?
I do not remember the earlier versions having this feature. Also the older Infinity Controllers had DATE Codes where as the newer Carrier Infinity Controllers have serial numbers. Wonder why they had to start tracking them so close?
The elusive "Carrier Factory" has never commented that non-defective Infinity Controllers were being returned? Or maybe they did and I misssed it?
Also the return on that much larger Carrier FE Fancoil(for 15 Seer) would need a great big transition to the old ductwork if in attic, or a larger hole cut in the base in a closet. If it is in a closet check the bottom and see if they left the hole through the wood too small.
But, I say if you do not have a newer Infinity Controller ask Carrier to replace it.
We love Carrier products and we also love when they improve them.
Sounds like the initial static pressure is too high. On the original series of controls, there were a lot of people who suddenly found out that their duct design had been wrong. You know the guys -- "I've been doing it this way for 20 years". Well, you've been wrong for 20 years and didn't have a system to tell you.
Anyway, when Carrier came out with the -A controls, they changed the amound of head room from initial pressure to 100% used pressure. Still, if you have a static pressure near 1", it's too high.