This is the outside unit that's not working. The inside blower is working on the air handler. The outside unit just refuses to come on, it is humming and the fan doesn't come on although it clicks like it wants to. The top is HOT!! I think it is the fan motor causing the heat, but I don't know.
If its the outside uinit I would shut everything down and call a repair company tomorrow. Could just be a capacitor on the motor for the compressor but if you leave it run, it may burn up the outside unit.