AC not working
 

I have a 2003 350z MT
The ac does not seem to be working properly. Some days it will blow out hot air like crazy and I can't get it to stop even if I move everything to off. And now it won't blow at all. Even if I crank the air all the way up no air comes out and the AC light just blinks on and off rapidly. Anyone know how to fix this problem? I've tried looking it up but people kept saying different stuff. Just hoping for some clarification. Thanks!

mine did that just last week,i took the center console out and unplugged the connector behind the a/c,i also disconnected the battery for like 5 mins just to reset it and it seems to work now,hope that helps