York S1-025-27792-009 Rollout Switch You can verify continuity across

You can verify continuity across the relay terminals with a multimeter

Enhanced Durability: Stainless steel construction at the tip prevents oxidation and burnout in high-temperature combustion zones

or plaster walls

042 orifice size (industry-standard #42 drill size)

Its robust construction is designed for high-cycle industrial environments

York S1-025-27792-009 Rollout Switch You can verify continuity acrossThe York S1 025 27792 009 is a critical safety component designed for precise thermal monitoring in high efficiency gas furnaces. Rated for a 350 degree F open temperature, this rollout switch replacement monitors the burner vestibule for excessive heat caused by compromised heat exchangers or flue blockages. As a manual reset limit, it necessitates a physical inspection of the combustion area before the system can be restored to operation, preventing