2007 Volvo ac problems/ fan clutch

I have a 2007 Volvo vnl the radiator fan won't stay engaged with the AC on so the high side pegs the 350 mark and cuts the compressor off. The research I've seen says the high-side switch controls that wondering if it's a two-part switch because they switch works and cuts the compressor off at 350 fan clutch works when you first start it and if the temperature gets to 210 it will kick in and bring it back down so I don't think it's a clutch issue. Anybody familiar with this? Any information is appreciated.

 

Thanks for the help but doesn't the high side tell the compressor to cut off as well if the high side pressure is to high? ( If so that part works) but that same sensor does it tell the fan to come on too? Is it a two part switch? Meaning can it work to tell the compressor to cut off and not work to tell the engine fan to come on when the pressure is high enough to need the fan?