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This is the genuine OEM Carrier flame sensor (part #50HJ401431) factory-specified for the Carrier PY1RJA060115AAWA packaged gas heating unit. The flame sensor — also called a flame rod — is a critical safety component that uses electrical current rectification to confirm an active burner flame. When the control board energizes the gas valve and igniter, it simultaneously monitors the flame sensor for a microamp signal. A failed or contaminated sensor cannot generate that signal, causing the control board to cut gas flow within 5–8 seconds as a safety lockout. The result: your unit lights briefly, then shuts off — cycling repeatedly without ever achieving a full heating run.
Compatibility: Designed as the factory-direct replacement for Carrier model PY1RJA060115AAWA packaged gas/electric units. Cross-references may apply to additional Carrier, Bryant, and Payne models sharing the same burner assembly — verify your unit's OEM part number on the data plate or wiring diagram before ordering. Need fitment help? Our HVAC parts specialists confirm compatibility before you buy.