Lennox 10P30 Thermocouple

The Lennox 10P30 30 MV Thermocouple is a high-performance, OEM-grade flame safety component designed for standing pilot gas furnaces and commercial heating systems. Featuring a 48-inch lead length, this specialized sensor allows for flexible routing and easier access in tight furnace layouts or large boiler cabinets. As a 30 mV universal thermocouple, it provides the precise millivolt output necessary to keep the Pilotstat safety control power unit energized, ensuring the main gas valve remains open only when a consistent pilot flame is detected. This HVAC flame sensor replacement is engineered to withstand the rigorous thermal cycling common in industrial furnaces and manufacturing processes.

For technicians in the field, the Lennox 10P30 utilizes durable metallurgy to minimize millivolt drift and ensure long-term signal stability. Its versatile mounting hardware, including split nuts and adapter assemblies, makes it a reliable furnace thermocouple replacement for various Lennox and third-party 30mV gas systems. By maintaining a clean, consistent electrical signal, this 48-inch lead model prevents nuisance furnace shutdowns and enhances the overall reliability of the pilot light safety circuit.

• Extended 48-Inch Lead: Ideal for deep burner assemblies and complex routing where standard lengths fall short.
• Universal 30mV Compatibility: Seamlessly integrates with most standard millivolt-rated gas valves and safety controls.
• High-Temperature Durability: Constructed with heavy-duty materials to resist oxidation and soot buildup at the hot junction.
• Reliable Safety Control: Rapidly de-energizes the safety magnet in the event of pilot failure to prevent hazardous gas accumulation.
• Versatile Mounting: Includes standard hardware for quick installation in push-in or nut-style pilot burners.

• Why is my furnace pilot won’t stay lit even after replacing the thermocouple? Check for a weak pilot flame that isn't fully engulfing the top 1/2 inch of the thermocouple, or inspect the connection to the gas valve for carbon buildup or loose threading.
• Can I use a 48-inch thermocouple if my old one was shorter? Yes, the extra lead length can be carefully coiled (avoiding sharp kinks) to fit, provided it is a 30mV system. Using a longer lead does not significantly impact the millivolt signal.
• How do I test if the Lennox 10P30 is functioning correctly? Using a multimeter on the DC millivolt setting, you should see a reading between 25mV and 30mV under an open-circuit load when the pilot flame is active.

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.