05 Ford Explorer A/C problem. What could be the issue?

I have 2005 ford explorer. My A/C compressor works my vents blow there's freon in the system. But when I turn my ac on it only blows hot air. Now I took it to pepboys and they guy said its a electrical problem with my climate control knob. Thats pretty much all he said. What could be the issue then?

The problem is the blue oval dysfunction on the front of the car. The problem will fix itslef when you trade the blue oval for a bowtie

There are 2 pipes to your compressor. A smaller diameter one pumping high pressure, hot compressed gas to your condenser (in front of your radiator) and a larger diameter one with low pressure, cold gas returning to be compressed. That low pressure, suction line should be cold and dripping wet with condensation, not warm, and not frosted. Regardless of what's going on inside the car.

You say the compressor "works", but to you, the compressor turning means it's working. To me, it's working if it's compressing low pressure refrigerant gas into high pressure refrigerant gas. Without a dual gauge set connected to the a/c system, we don't know if the compressor is "working". It's just guessing.

So what is that suction line doing? Chilly cold and dripping wet? Or no?

Answer in my Comment section, and we can go to step 2.

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