Carrier LH680013 Flame Sensor

The Carrier LH680013 Flame Sensor is a critical OEM safety component designed for high-efficiency gas furnaces using Hot Surface Ignition (H.S.I.) systems. This straight flame sensor utilizes flame rectification technology to provide steady DC microamp signals to the integrated furnace control (IFC). Engineered with a high-grade alumina ceramic insulator and a durable Kanthal flame rod, this sensor can withstand combustion temperatures up to 1800°F. When the rod is engulfed by the burner flame, it completes a circuit that tells the control board to keep the gas valve open; without this precise signal, the system will enter a safety lockout. It features a standard 1/4 inch male spade connection and a 3-1/4 inch probe length, ensuring a direct fit for many Carrier, Bryant, and Payne models including the 340AAV, 350MAV, 58MXA, and 58MVP series. Utilizing this genuine HVAC replacement part prevents the common "short cycling" issues often caused by carbon buildup or oxidized sensor surfaces on older components.

• Precise Flame Sensing: Delivers accurate microamp readings (typically 2.0 to 6.0 µA) to ensure reliable burner operation and prevent nuisance shutdowns.
• High-Temperature Durability: The Kanthal flame rod material and Teflon-insulated lead wire are rated for extreme heat cycles, preventing premature failure in the burner box.
• Universal Compatibility: Replaces multiple part numbers including LH33WZ514, LH33WZ516, and PFS013, making it a versatile service truck essential.
• OEM Standards: As a genuine Carrier flame sensor, it maintains original manufacturer specifications for safety and efficiency.

• How do I test the Carrier LH680013 with a multimeter? To diagnose, set your meter to the µA (microamp) DC setting and connect it in series with the sensor wire. A healthy reading is typically over 2.0 µA once the flame is established.
• What causes this sensor to fail? Most "no heat" calls related to this part are caused by carbon deposits or silica buildup on the rod, which insulates it and breaks the rectification circuit.
• Can this be mounted remotely? Yes, the single-screw, plated steel bracket allows for remote mounting on multiple burners or adjacent to the igniter depending on the specific cabinet configuration.

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.