Lennox 83L72 Flame Sensor 340793-762 Multi-Speed Flexibility: 4-speed taps allow

Multi-Speed Flexibility: 4-speed taps allow for precise cfm adjustment based on specific ductwork requirements

Using it with R-410A can lead to incorrect pressure drops and potential system failure due to differing pressure-temperature characteristics

Is this a bolt-on or sweat-fit valve

leading to water level errors on the humidifier controller

Lennox 83L72 Flame Sensor 340793-762 Multi-Speed Flexibility: 4-speed taps allowAs a seasoned technician, you know that a fouled Lennox 83L72 Flame Sensor is one of the most frequent causes of nuisance furnace short cycling. This genuine OEM flame rod replacement is engineered for precision rectification signal monitoring within the combustion chamber. When the integrated furnace control (IFC) fails to detect the microamp current through this sensor, it immediately terminates the gas valve power to prevent hazardous conditions.