Oskar
A2OC Donor
Sorry, I meant the plastic 'emergency breakout' bit that joins the pully to the compressor drive shaft. This has not failed and the compressor shaft and pully rotate as one. I believe the compressor is OK (and certainly not seized.There is no clutch on the A2 AC compressor, it runs all the time, with flow controlled by the N280. If you turn the AC off, (Econ), the N280 reduces flow to around 5%, but never zero.
Have a read of this, page 59 on. You'll understand it a lot better then.
Mac.