Lennox 83L72 Flame Sensor 340793-762 How do I verify if

How do I verify if the sensor is bad

Is this a bolt-on or sweat-fit valve

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

Features durable sealing materials designed to resist chemical degradation from common refrigerants and lubricants

Lennox 83L72 Flame Sensor 340793-762 How do I verify ifAs 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.