York S1-025-38950-000 Flame Sensor Use a wet rag or

Use a wet rag or heat sink paste on the drier body to prevent overheating the internal core or damaging the paint seal while brazing the 5/8" sweat connections

If your pilot light will not stay lit despite a strong flame touching the tip

For technicians performing HVAC system troubleshooting or routine safety inspections

Experienced technicians know that mineral buildup on a liquid level probe can lead to erratic readings and system downtime

its primary function is to redirect internal cabinet air pressure away from the pilot assembly to prevent blow-outs

York S1-025-38950-000 Flame Sensor Use a wet rag orThe 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,