Right on,
I called Maxxair and they UPS 'd two controllers to my campground. It takes about 20 minutes or less to install them. The circuit boards are an upgraded item so I guess they have plenty failures.
Previously I couldn't get voltage to my fans coming in. DUH, I was checking voltage with the "Store" switch on. My bad.
But all is good now.
Yours will be too.
Thanks to all- another of many problems solved.
Happy Day and God Bless