The Trane SEN1114 Flame Sensor is a critical safety component designed for precise flame rectification in high-efficiency gas furnaces. Utilizing a Nikrothal 80 alloy sensing rod, this OEM-spec part provides superior oxidation resistance and can withstand combustion temperatures up to 2200°F. The SEN1114 functions by facilitating a microamp (µA) DC signal back to the integrated furnace control (IFC) once a flame is established. If the sensor detects a signal below the common 0.5 µA threshold, the system will trigger a lockout to prevent hazardous gas accumulation. This 90-degree offset probe features a standard 1/4-inch male spade termination for secure electrical connectivity and is a direct replacement for SEN00337, SEN01114, and SEN0491. Contractors should verify the ceramic insulator for cracks during installation, as any hairline fractures will leach current to ground and cause intermittent "low flame signal" fault codes. Key Benefits for HVAC Technicians: OEM Compatibility: Engineered as a drop-in replacement for legacy Trane and American Standard flame rods, ensuring exact alignment within the burner assembly. High-Temperature Durability: The Nikrothal 80 flame sensor material prevents premature pitting and carbon buildup compared to standard stainless steel alternatives. Reliable Flame Rectification: Delivers a stable microamp signal to the control board, reducing nuisance service calls and system "short cycling." Simplified Installation: Features a pre-bent 90-degree rod and single-hole mounting flange for rapid field replacement in tight burner vestibules. Common Questions: What are the symptoms of a failing Trane flame sensor? Internal diagnostics typically show a "3-flash" or "flame loss" code. The furnace will ignite the burners for several seconds and then immediately shut down because the control board cannot verify the presence of a flame via the SEN1114. Can I clean the Nikrothal 80 rod instead of replacing it? While technicians can use fine steel wool to remove light oxidation, excessive pitting or a cracked porcelain insulator requires a full furnace flame sensor replacement to maintain system safety and UL compliance. How many microamps should a Trane SEN1114 produce? A healthy sensor typically generates between 2.0 and 5.0 µA. If the reading drops below the manufacturer's specified minimum (often 1.0 µA), the system may become unreliable. 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.
