ac cooler on drivers side. replaced scroll valve last summer, can it go bad on 2005 Ford Freestyle

replaced scroll valve last summer. That fixed the problem then. But now, just all of sudden started blowing hot air. Put a charge on it, it is somewhat cooler and more so on drivers side and little more in back than passenger side.
this is a 2007 ford freestyle. Can scroll valve go bad?

Asked by for the 2005 Ford Freestyle