Finally had time to investigate the AC compressor more. I knew the coil was broken, also the pulley bearing. I removed all those from the compressor axel. Everything was rusty and stuck. Lots of WD-40, different tools and cursing. When I was finally taking the last part (coil) off from the axel, the some seal in the compressor failed and srayed the mix of refrigerant, compressor oil and UV dye straight into my eyes. Quick run inside and washed eyes with plenty of water. Nasty stuff. Burning feeling in the eyes, but seems I got most of it out. And I can still see... It was a bit strange as at the moment I was not even touching it when it failed. I assume broken bearing heated up the axel and burned the coil and the seal as they all were next to each other. Nevertheless whole AC compressor is FUBAR. At least now I can change it by myself as there is no refigerant anymore, if I decide to go that route. One option would be continue to drive without AC as the compressors seem to be bit pricey. One positive thing is that now when the belt does not go over AC pulley, fuel consumption dropped 0,2 l/100km.