A/c question

[XxLuieLinesxX]

I'm trying to figure out why my a/c stopped working on the first 3 levels, i dunno if you kno what i mean...theres 4 settings to put the a/c on...and the first 3 dont work..and the fourth one, blows out air but it aint cold at all..i figured i blew something. If any1 knows anything about this please let me know, and if you kno what part i need that would be awesome<p>thanks

[XxLuieLinesxX]

I'll check if thats it, thanks alot for the info