SPNO Logic: Reliable close-on-fall mechanism ensures the system only fires under optimal venting conditions

Designed as a high capacity gold label core

while the start capacitor is controlled via the normally closed contacts between terminals 1 and 2

making it suitable for most mechanical room environments

ensuring root cause diagnosis before operation resumes

York S1-024-19082-031 Sequencer Relay Els PW 17895 SPNO Logic: Reliable close-on-fall mechanismFor field technicians and contractors maintaining York air handlers and electric furnaces, the York S1 024 19082 031 Sequencer Relay is a vital component for staged heating control. This 24V heat sequencer, frequently cross referenced as 208V42, manages the timing of resistive heating elements to prevent high amperage inrush from tripping circuit breakers. Built with a robust bimetal heater coil, this relay provides a consistent timing sequence of 1