I started to notice my AC was not blowing cold air all the time.

What is your question?

I would have to play with the controls or turn the AC off and on and than the AC would blow cold air again. Most of the time the ac would blow cold air normally but lately I find myself playing with the controls or turning the ac on and off a lot more and two days ago it just stopped blowing cold air altogether no matter what I do. Could this be a low refrigerant problem? Or could this be a condenser fan motor problem? What would cause the problem to be intermittent and now no cold air at all