For field service applications

Key Benefits 10K Ohm Resistance: Provides high-precision signal output compatible with standard York control boards

the 626610 flame rollout switch is a standard truck-stock item for diagnosing furnace short cycling or no-heat calls where the safety limit has tripped due to poor draft or low gas pressure

managing blower motor speeds

York S1-025-45231-000 Ignitor 321702-401 For field service applicationsThe York S1 025 45231 000 Ignitor is a high performance silicon nitride hot surface ignitor designed for professional HVACR maintenance and repair. This OEM furnace replacement part is engineered to withstand the rigorous thermal cycling of modern gas fired equipment, offering a significant upgrade over traditional silicon carbide components. As a direct replacement for S1 025 49808 000, it ensures precise fitment and electrical compatibility without