My central air turns on, I can hear the motor on, but the tube outside that connects into the house is freezing up and air will not come out. I have to leave it off all day and at night when I turn it on, it comes on. Someone else told me it has a climate control or something? Could it be just the blower and why does it only come on at night? Can anyone help?

Motor / bearings may be overheating and locking up,if there is no air flow across the evaporater coil it and the lines will freeze up, needs to be looked at and not run when this happens