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This OEM 90-degree flame sensor with mounting bracket is the factory-specified replacement for the Carrier PY3GNA060130NB gas furnace. The flame sensor is a critical safety component: after the igniter lights the burner, the sensor's rod is engulfed by the flame and passes a small microamp current through it to prove combustion. If the control board doesn't see that signal within a few seconds, it will shut off the gas valve as a safety precaution. A failed or contaminated flame sensor is one of the most common causes of a furnace that starts, runs for 5–8 seconds, then locks out — often with a diagnostic fault code for "flame not proven."
Compatibility: Direct OEM replacement for Carrier model PY3GNA060130NB gas furnaces. Verify your existing sensor's rod orientation (90-degree) and mounting bracket style match before ordering. Our fitment team is available to confirm compatibility — contact us before you buy if you have any questions. In stock — order by 3 PM local time and your part ships today.