BarneyS wrote:
Turn the unit off for a couple of hours. Sounds to me like it might be iced up. That happens in very humid, hot weather sometimes.
Seems funny to me that it would be working fine and then suddenly quit unless it is frozen. Dirty condenser fins will also help it freeze up.
Make sure you are running it on high fan speed and not low.
Just go to a movie or something while it is off to thaw out, then come back and turn it on. If it still does not blow cold air then I would get up there and look at the back side of the condenser fins or search for a tech to come out and give it a look. Often you can see up in there from the bottom and see the fins too.
Hope this helps a bit. :)
Barney
IMHO this is the best advice. I also suspect it's frozen.