The defrosters work, but can't turn air on to the feet, or anywhere else. If you turn on the AC, it goes to the windshield...so does the heater...

I am baffled on what happened, and any help would be greatly appreciated!!

2003 Ford Windstar

 

Check for a disconnected, broken or leaking vacuum line for the A/C system under the dash. particularly look in the passenger side area as toes can dislodge the line(s). With a loss of vacuum to the HVAC system, the default setting is DEFROST. Also check the vacuum line undet the hood that goes to the HVAC vacuum canister that is normally mounted between the inner and outer fender.