In my son's 1998 F150, this control only works in the defrost setting. THe A/C works and all, but can't adjust the panal, floor, etc.
Is it a fuse? I checked the ones inside the cab, they looked good. Does 1 of the high power ones affect this? Everything else seems to be fine.

 

Cronic problem with **** turning but not moving the controller. Search the threads for some help with this. could also be controller failure, some sort of vaccum prob. or the door itself broken. I would look into the **** prob. first as I know I have seen half a dozen posts on it over the last year or so!