Johnson Controls P170EA-14 Pressure Controller 30067439-890 making it a versatile component

making it a versatile component for updating aging units or new installs

an "OL" or high-resistance reading indicates a hairline crack

The 56L68 is a Single Pole Double Throw (SPDT) relay

The Johnson Controls P20CA-75 Pressure Control is a professional-grade air conditioning limit switch designed for critical pressure monitoring in HVACR systems

including the widely used V4043 and V8043 models

Johnson Controls P170EA-14 Pressure Controller 30067439-890 making it a versatile componentThe Johnson Controls P170EA 14 is a professional grade low pressure controller designed for precise pump down control and low pressure cut out in commercial refrigeration and HVAC systems. Engineered with a NEMA 1 enclosure, this unit offers a functional range from 12" W. C. to 80 psi, making it a versatile choice for monitoring low side system pressures. One of the standout features for technicians is the adjustable differential, which can be tuned