OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA048074AAWB

This OEM flame sensor (part number 50HJ401431) is the factory-specified replacement for the Carrier PY1REA048074AAWB packaged unit. The flame sensor — also called a flame rod — is a critical safety component in the burner assembly. It detects the presence of a flame by passing a small microamp current through the burner flame to ground. When the rod becomes coated with oxidation or carbon deposits, its ability to conduct degrades and the control board interprets this as a "no flame" condition — cutting the gas valve within 5 to 8 seconds of ignition. The result is a furnace that lights briefly, then shuts down and locks out, often cycling through multiple failed ignition attempts before going into hard lockout.

• Specs: OEM part number 50HJ401431 | Factory-matched rod length and mounting bracket geometry | Correct microamp output range for Carrier control board compatibility
• OEM vs Generic: OEM flame sensors use the exact rod alloy and bracket tolerances specified by Carrier engineering. Generic alternatives may vary in rod length or coating quality, leading to marginal microamp readings and nuisance lockouts — even when the sensor appears new.
• Install Difficulty: 2/5 — Shut off gas and 24V power before servicing. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers, and a multimeter capable of reading DC microamps for verification. Photograph the wire harness connector orientation before disconnecting. Clean the burner port area of any debris before installing the new sensor.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY1REA048074AAWB packaged unit. Always cross-reference the OEM part number on your existing sensor or equipment data plate before ordering. Our technical team is available to verify fitment — contact us before purchasing if you have any questions. Order by 3 PM local time for same-day shipping.