I have a 2010 V50.

The AC worked fine then all of a sudden nothing.

AC compressor will not come on, no clicking or anything, the green light comes on the button when it is pressed on and orange when it is off. The fan motor works fine on all speeds. The only thing I have done so far is check all fuses. Everything has checked out fine. I would like to check the relays but do not know how. Any advice on where to start troubleshooting would be great, Thanks in advance....

 

I just checked the and the pressure on the unit was sitting at 100 psi

 

The 100 psi pressure is good for an outside temperature was around 85F (29C). Assuming fuse is good then I would locate the pressure switch on the high pressure pipe. This pressure switch controls the on-off clutch cycle of the A/C compressor. Remove the plug and confirm you have 12 volts on one cable. If voltage exist then jumper the two wires and the A/C clutch should engage. Do not leave jumper in place as you will over pressurize the system. If clutch engages then pressure switch is defective. If clutch does not engage then reinstall pressure switch plug and then check the plug on A/C compressor. If power at A/C plug then clutch coil defective or clutch gap to large.