Please Help Issue with AC and Control

[SLX5]

Yesterday I took out my AC Control Unit. I was going to replace it with one I had bought. It didn't fit so I decided to put the olf one back. The old one worked fine just looked a little worn out.
Anyway this morning I tried to turn the AC on but the only thing that is on is the rear. I tried re-plugging the wires onto the control it still didn't do anything. All the controls light up but no cold air and I cant seem to shut the rear off. ANy thoughts......