How does one diagnose a failed AC low pressure switch????

Supposedly OE spec is that it kicks "on" at 30 PSI. Does that mean that with over 30psi of static pressure (low side measurement, engine off) it will flip on?

The system had 85 psi at the low side, with the motor off. Should the low pressure switch be "on"?? I jumped/bypassed the switch and the compressor came on.


This is a 6 yr old Behr branded switch. Kinda find it hard to believe that it died, but i think it's dead.

Thanks!