Trane SEN1457 Flame Sensor

When you're dealing with a residential furnace or commercial gas-fired unit that short cycles or hits a lockout, the Trane SEN1457 Flame Sensor is often the primary suspect. As a direct OEM replacement flame sensor, this component is critical for the flame rectification process, providing the DC microamp signal the control board needs to keep the gas valve energized. It is technically identical to the 11J38R06890-002 and serves as a high-durability sensing rod engineered to withstand the high-temperature environment of the burner assembly. This HVAC furnace part is specifically designed for Trane and American Standard equipment, ensuring the ignition control system functions safely by detecting the presence of a flame within the first few seconds of a heating cycle. Whether you are performing a seasonal tune-up or an emergency repair, installing this genuine combustion safety sensor prevents nuisance outages and ensures reliable heat compatibility throughout the winter months.

Key Benefits

• Direct Technical Replacement: Provides a 1:1 fit for the 11J38R06890-002, eliminating the need for bracket modifications in the field.
• High-Temperature Durability: Constructed with heavy-duty ceramic insulation and a robust sensor rod to resist oxidation and carbon buildup.
• Standardized Signal Output: Ensures a consistent 2–10 microamp signal to the control board, preventing short cycling and safety lockouts.
• Universal Trane Fitment: Compatible with a wide range of Trane and American Standard gas-fired furnaces and rooftop units.

Common Questions

How do I know if the flame sensor is failing?
If the burner ignites but shuts off within 3 to 5 seconds, the sensor is likely failing to send a rectification signal. Check for cracks in the ceramic or heavy soot on the rod.

Can I just clean the SEN1457 instead of replacing it?
While cleaning with a fine abrasive may temporarily restore the signal, microscopic pits in the metal of an older rod will lead to rapid carbon re-accumulation. Replacement is the standard professional practice for long-term reliability.

What is the typical microamp reading for this sensor?
Most Trane control boards look for a signal between 2.0 and 6.0 microamps DC. If your multimeter reads below 1.0 microamp while the flame is present, the sensor or the ground circuit is likely faulty.

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.