Carrier HK02ZB027 Pressure Switch 27 PSI Open 67 PSI Close

The Carrier HK02ZB027 is a pressure switch for Carrier HVAC systems It is to protect the unit by keeping a check on the pressure of the refrigerant inside the unit. It is a pressure gauge that also has an on/off button incorporated in the same unit.This switch has two pressure settings an opening pressure and a closing pressure In this case the switch opens when the pressure drops to 27 psi and closes when pressure increases to 67 psi.n on/off switch. The HK02ZB027 also protects your Carrier HVAC equipment from possible by powering down the system should pressure get too Low refrigerant pressure results to overheating and compressor burnout.