Daikin-McQuay 073319801 Subbase Els PW 17895 This HVAC pressure switch features

This HVAC pressure switch features a Single Pole Single Throw (SPST) configuration

While the 143-16-005-00 is the cap itself

or monitoring residential heating equipment

The unit is CSA certified for 1/2 PSI

Buzzing often indicates worn pivot points or high-resistance contacts

Daikin-McQuay 073319801 Subbase Els PW 17895 This HVAC pressure switch featuresThe Daikin McQuay 073319801 Subbase is a critical mounting and wiring interface designed specifically for PTAC thermostat control integration. Engineered to serve as the hardware foundation for the Honeywell Q674E1460 subbase, this component facilitates seamless communication between the wall mounted thermostat and the HVAC unit's control board. It features a rugged terminal block architecture designed to handle standard 24VAC pilot duty circuits,