I would first clamp off the duo-valve intake with a hose clamp. Thus preventing the flow of water through the valves, turn the A/C unit to full cold A/C and see what temp you get in the car. That should tell you if the A/C is working correctly and giving good cold air. If you do have cold air then the problem probably is the duo-valves. If the air isn't totally cold the A/C system needs refrigerant.

The control unit in the dash has an electrical contact connection on the rear which is a know source of problems. It can be repaired; use the search box. [ see "Index of Crossfire problems and repairs" in the in the TSB and How to Articles, look at the A/C section and then the PDF Heater-AC Fan Speed Control Removal and repair]