Ford Super Duty (1999-2016) :: 2011 - Manual A/C Shut Off Like A Switch - No Climate Control?

I have a2011 f-250 in my fleet, manual a/c and just the other day it shut off like a switch, when you start the truck it comes on and the buttons all work but after 6 seconds it goes dead, no lights, no blower nothing, everything else works fine. I have also noticed when you first start when the radio goes from the station to the clock thats when the climate unit shuts off. talked to the dealer they said they never sell and control heads and i doubt its that cause it works on first start.