Weasel, thanks as always for replying !
I'm not that bad! But I wasn't clear enough. I meant AC Compressor clutch. GT1 shows it's ON shortly after button on panel pressed but clutch is not engaging. I have pretty good knowledge of AC systems. It's not cycling, nothing! AUX fan in front of radiator doesn't come on either.

I only hear DME adjusting RPM's for expected load from compressor, thats it.

Bentley says aux fan should come in when car started for short time, that doesn't happen.

Are they interconnected? Auyx Fan and AC compressor clutch?