Jeep Liberty Air Conditioner Blows Hot

I Have Filled With Coolant And Have Checked The Fuse And Relay. The Serpentine Belt Looks Good.

I Have Already Changed The Blower Motor. I Can’t Get The Air To Blow Cold Or Out Of The Other Vents. Under The Hood The Wires Are Cold So...

My Air Conditioner Will Sometimes Blow Cold Air And Then Starts Blowing Hot Air