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the 018F6077 is strictly an AC-rated coil (24V AC)
and old R43800-001 part numbers across Lennox
How do I know if the harness needs replacement
With a 10 Amp resistive contact rating
York S1-024-19082-034 Relay Els PW 17895 the 018F6077 is strictly anThe York S1 024 19082 034 Heat Sequencer Relay is a professional grade 24V control designed for the precision management of electric heating elements in residential and light commercial air handlers. As a critical component for electric furnace staging, this thermal type sequencer prevents excessive inrush current by staggering the activation of heating banks, ensuring the stability of the building's electrical service. This OEM York heating control