York S1-025-22273-001 Limit Switch 318423-701 this replacement pilot assembly optimizes

this replacement pilot assembly optimizes thermal efficiency and prevents unnecessary system lockouts during peak demand

Solid-State Reliability: Built with high-grade soldered relays and trace paths to resist moisture and carbon build-up common in older furnace cabinets

ensuring a seamless fit and reliable operation in Modine unit heaters including models HD30

the coupling provides superior thermal conductivity and corrosion resistance

Technicians often encounter failed relays or burnt traces on older modules

York S1-025-22273-001 Limit Switch 318423-701 this replacement pilot assembly optimizesThe York S1 025 22273 001 Limit Switch is a critical OEM safety component designed for precise thermal management within HVAC furnace systems. This SPST (Single Pole Single Throw) fixed temperature control operates on an auto reset logic, ensuring the burner circuit opens when temperatures reach the 150F trip point and automatically closes once the system cools to 110F. Engineered for York, Coleman, and Luxaire gas furnaces, this high limit switch