OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA036074ABWB

This genuine OEM flame sensor (part #50HJ401431) is the factory-specified replacement for the Carrier PY1REA036074ABWB packaged gas heating unit. The flame sensor — also called a flame rod — is a critical safety component that monitors the burner flame via microamp electrical current through an alumina-coated stainless steel probe. When the control board cannot detect sufficient current (typically due to a coated or failed sensor), it shuts off the gas valve within 5–8 seconds of ignition as a safety lockout. The symptom is unmistakable: the burner lights, runs briefly, then shuts down repeatedly — leaving the system in a no-heat lockout condition.

• Specs: OEM Part #50HJ401431 | Stainless steel sensing probe | Alumina-coated for corrosion resistance | Dimensions approx. 2.9"W × 4"D × 1.75"H | Compatible with 24V AC control circuits
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances for microamp flame signal sensitivity. Generic sensors can produce out-of-spec readings, triggering false lockouts or — more dangerously — failing to detect a true flame-out event.
• Install Difficulty: 2/5 — Turn off gas and power at the disconnect before beginning. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Locate the flame rod in the burner assembly, disconnect the single wire lead, remove the mounting screw, and reverse the process with the new sensor. Lightly sand the probe with fine steel wool if you're cleaning rather than replacing.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders placed before 3 PM ship same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY1REA036074ABWB packaged rooftop/gas heating unit. Verify your existing part number on the burner assembly or unit data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy for peace of mind.