or blocked flue venting

Includes Dial Scales in both Fahrenheit and Celsius

Supports a wide voltage range of 115V-220V

Common Questions Is the HUS1207 compatible with all 6-pin wiring harnesses

York S1-025-41318-000 Limit Switch or blocked flue ventingThe York S1 025 41318 000 Limit Switch is a critical safety component designed for precise thermal monitoring in high output furnace applications. This mechanical reset limit switch is calibrated to trip at 250F, effectively preventing heat exchanger damage and ensuring the unit operates within safe thermal parameters. Engineered for York residential heating systems, this SPST (Single Pole Single Throw) switch opens on temperature rise, providing a