Supco FLS51M14 Flame Sensor

The Supco FLS51M14 Flame Sensor is a single-prong flame detection component used in gas-fired furnace ignition systems. It monitors burner flame presence during operation and sends a signal to the control board to maintain better gas flow. It is commonly used in hot surface ignition systems where accurate flame verification is required in HVAC systems. It is mounted near the burner assembly and plays an essential role in ignition safety control supporting the furnace operate correctly during heating cycles. The sensor is typically installed in residential, and light commercial heating equipment where flame sensing is essential for system operation.