conditioning

Air had been working fine. Car sat a couple weeks. Today air won't come on. I hear compressor clicking thing when on but no air coming out. Finally rolled control all the way to Hi and blowing nice cold air. Soon as you roll it down one, nothing. Reasons? Thanks

Hi all, I've been told my AC sensors are the cause of it not staying cool. My mechanic cleaned the sensors and the AC cooled nicely for about a week. Now it cools then then room temp for a while then cool again. I want to know if it is possible for the AC to run in the coolest temp all the time...