Rheem-Ruud SP15129 Flame Sensor

The Rheem-Ruud SP15129 Flame Sensor is a critical industrial-grade component designed for precise flame rectification in high-efficiency gas-fired systems. For veteran technicians managing furnace service calls, this sensor is the definitive solution for intermittent ignition lockouts caused by carbon buildup or porcelain insulator cracks. Engineered to withstand the rigors of high-temperature combustion environments, the SP15129 provides the microamp signal necessary for the integrated furnace control to maintain safe burner operation. This official Rheem OEM replacement part ensures exact electrical characteristics and physical alignment, preventing the common nuisance trips associated with generic universal sensors. The assembly includes a pre-sized flame sensor gasket and high-torque mounting screw to ensure a gas-tight seal and secure grounding, which is vital for accurate flame sensing. When troubleshooting a furnace flame sensor that consistently fails to prove the pilot or main burner, replacing it with the SP15129 restores system reliability and optimizes heating performance across the Rheem and Ruud product lineup.

• OEM Compatibility: Exact replacement for Rheem-Ruud SP15129 and cross-referenced with part number 331P81 for a seamless fit.
• Complete Install Kit: Includes the essential flame sensor gasket and mounting hardware to prevent air leaks and ensure a proper ground.
• Durable Construction: Built with high-grade materials to resist oxidation and thermal stress in demanding gas-fired appliances.
• Reliable Signal: Engineered for accurate burner flame detection, minimizing service call-backs for "no-heat" codes.

How do I know if the SP15129 is the right sensor for my furnace?
This sensor is specifically designed for Rheem and Ruud gas furnaces and water heaters. You should verify the part number in your unit's technical parts manual; it often replaces older or damaged flame sensor kits with the same footprint.

Can this sensor be cleaned, or should it be replaced?
While light oxidation can sometimes be removed with a fine abrasive, porous insulator cracks or severe pitting require a full replacement with a new SP15129 to ensure the DC microamp signal remains within the manufacturer’s specified range.

Is the gasket necessary for every installation?
Yes. The included gasket ensures that the combustion chamber remains sealed and that the sensor body maintains a stable position for consistent flame rectification.

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.