Since I got my car a few years ago the AC light that is lit green when the AC is on will blink every now and then and the AC would stop blowing cold air. I would turn it off and then on and it was back to normal. Yesterday it started blinking and blowing warm air so I turned it off and then back on but it didnt stop. It kept blinking for around 15 minutes and blowing warm air, then the light stopped blinking but its still blowing warm air. Does anyone have any ideas? Thanks!