Thank You for reply. Yes, it should say BAR (not PSI) regarding pressure. Gas is charged exactly 500 grams, by the book. The engaging system on compressor is working fine (when the compressor works, an then shuts of (clutch returns in previous position)) Could it be that expansion valve or car digit...

Please, I am desperate! Ok. So I cant find a problem with digital dual zone AC in car. LANCIA MUSA. I noticed that ac is shutting off after several minutes of working fine. It was all topped with gas. First, I replaced preasuure switch (linear), no change. Second, I noticed that second speed of vent...