this part offers versatile integration as either an open-on-rise or close-on-rise control depending on your specific board logic and wiring schematic

Key Benefits: Factory-Calibrated Precision: Features an optimized 130 degree opening temperature to prevent thermal damage to the heat exchanger during restricted airflow events

the switch is performing its safety function to prevent damage to the heat exchanger

If you have no continuity and the temperature is below 155°F

making it a versatile addition to any service truck for gas fireplaces

York S1-025-38950-000 Flame Sensor this part offers versatile integrationThe York S1 025 38950 000 Flame Sensor is a critical safety component designed for furnace ignition systems, acting as the primary sensor for detecting the presence of a healthy flame through flame rectification. Featuring a 34 inch lead wire, this component ensures the integrated furnace control board receives a consistent DC microamp signal to keep the gas valve energized. This specific model serves as the direct replacement for York 025 27731 701,