no air out top vents

ok so im not trying to repeats the other guys problem cuz mines diff.
my a/c works and everything just when i push the defrost button for the windshield, the air comes out onto my feet?
circulation switch.... pull the dash apart .... just wondering what i need to look for?!?!
my a/c works and everything just when i push the defrost button for the windshield, the air comes out onto my feet?
circulation switch.... pull the dash apart .... just wondering what i need to look for?!?!
