As I stated before, I just purchased a XK8, which I thought was perfect with 20K miles on it. Well, yesterday the air conditioner was working today kaput. I ran the diagnostics on it, and I got code 24. I reset the code drove the car came back to code 24. I had an extra "wheel" for the front vent and tried that...nothing. Any help would be appreciated.

 

It almost feels like it is blowing hot and cold air, and I see the compressor's clutch turning. The error states - Face vent demand potentiometer fault Potentiometer open / short circuit Harness/connector fault Refer to PDU. Will the PDU actually tell me what the problem is?