2002 Infiniti I35 • 6 cylinder FWD Automatic • 117,289 miles

My ac sometimes works just fine and other times not, I had one time it was working and then the controller screen just turned off and I tried to turned it on but it was not responding the next day it worked just fine, sometimes the controller light comes on and off rapidly without turning the ac on (lights blinking), and sometime it just blow hot air, what do you think the problem is?
June 29, 2011.

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