http://safrane.pl/ftpskp/Manuale/
thats for ph1, for ph2 its similar (minus+minus+stop for about 3 seconds), except if I remember correctly there is one more code (8 - on the right side it tells about presostat status, I don't know for the left). I don't have ph2 manual unfortunately (if you find one please share) so I have to use foreign forums with google translate. you can also reset AC system if that will make any difference - press rear window heater button + air recirculation button simultaneously for about 10 seconds - it will close all vents and reset the settings to factory defaults.
since I too have non-working AC (and no fault codes in this self-diag sequence), I'm interested in the outcome[/quote]
