York S1-025-26362-700 Flame Sensor

The York S1-025-26362-700 Flame Sensor (also identified as the 760-688 flame sensor) is a critical OEM safety component engineered for precise flame rectification in York, Luxaire, and Coleman gas-fired equipment. This specialized furnace flame sensor replacement is designed to detect the millivolt signal generated by the burner's flame, ensuring the integrated ignition control module maintains the gas valve circuit. If the sensor fails to detect a stable flame, it triggers an immediate safety shutdown to prevent hazardous unburned gas accumulation. Built with high-grade materials to withstand the intense thermal cycling of a HVAC burner assembly, this sensor provides the reliability required for both high-efficiency and standard-efficiency York furnace models. As a primary flame rectification probe, the S1-025-26362-700 ensures consistent combustion monitoring and prevents nuisance lockouts caused by carbon buildup or porcelain insulator failure, common issues in aging heating systems.

• OEM Precision: Genuine York replacement part ensures exact electrical resistance and physical fitment within the burner vestibule.
• Enhanced Safety: Provides rapid flame signal feedback to the control board, protecting against delayed ignition and gas buildup.
• High-Temperature Durability: Constructed with robust metallic alloys and a high-alumina ceramic insulator for long-term survival in the combustion zone.
• Wide Compatibility: Direct replacement for several discontinued or superseded parts in the 760-688 series of flame sensors.

What are the signs of a failing York flame sensor?
Technicians typically look for a furnace that ignites for several seconds and then shuts down (short-cycling). If the flame signal, measured in microamps (µA), falls below the manufacturer's threshold—often 0.5 to 1.0 µA for most York boards—the sensor likely requires cleaning or replacement.

Can I use a universal flame sensor instead of the S1-025-26362-700?
While universal sensors exist, the S1-025-26362-700 features a specific bend and mounting bracket orientation essential for proper placement in the flame path. Using the incorrect geometry can lead to weak flame signals and intermittent operation.

How often should the flame sensor be inspected?
This component should be inspected during every annual preventive maintenance visit. Buildup of silica and carbon on the probe can insulate it from the flame, leading to service calls for ignition failure.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.