Few days ago, I felt no cool air came out of vent, but after while (lot longer then it should be) it seemed to working fine. Yesterday, same thing happened again. Everything seemed to be working just no cool air. I ended up with turning it off. This morning I found something new, when I turned AC on and the outside unit is even spining at all. Then I noticed that the Pepco box (for energy saving)has a little light on. I assume that is when it is working although it should only work during the daytime on extrem hot weather. Anyhow, this might be a separate issue. So, my questions is what could be the problem (intermittent cool air)? And how do I diagnose this issue? This is a 14 years old equipment, worked great.