Don't know where to put this so I'm giving this a shot. Our roof top AC (ducted) was working great, then all of a sudden it stopped. When I turn it on at the thermostat I can hear the compressor come on, but no cold air. I got up on the roof, removed the shroud, had my wife turn it on, and same thing, compressor (I guess that what it is call) comes on, but the fan does not turn. The fan will turn easily, does not seem to be restricted in any way. Filters are clean. Any help will be appreciated. Thanks
Dan