Quote:

What makes you think you have no Freon in the system? 120 psi tells me you have some and odds are you are not turning the compressor when trying to charge the system. Jump the pressure switch and see if the AC compressor engages it's clutch then look at your pressures



Static pressure is zero on both sides = no refrigerant. The 120 lbs only shows up when I have a can of refrigerant connected and trying to charge.