OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA120224ABWA

This is the genuine OEM replacement flame sensor for the Carrier PY1REA120224ABWA packaged gas heating unit. The flame sensor — also called a flame rod — is a critical combustion safety component: it detects the presence of a burner flame by passing a small microamp current through the flame to ground. When the sensor is fouled with oxidation or has failed entirely, the control board cannot confirm ignition and will lock out the gas valve, typically causing the burner to light and then shut off within 5 to 8 seconds, resulting in a no-heat call.

• OEM Part Number: 50HJ401431 | Genuine Carrier factory-original replacement — not an aftermarket substitute
• Construction: Stainless steel sensing probe with corrosion-resistant alumina-coated rod | Compact form factor (approx. 2.9" W × 4" D × 1.75" H) | Weighs approx. 0.09 lbs for easy handling during service
• OEM vs Generic: OEM sensors are calibrated to exact microamp detection thresholds required by the Carrier control board. Aftermarket sensors may produce marginal readings that cause nuisance lockouts or fail to meet UL safety standards for your unit.
• Install Difficulty: 2/5 — Shut off gas and power before servicing. Tools needed: 1/4" or 5/16" nut driver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (to verify microamp output). Disconnect the single wire lead, remove the one mounting screw, swap sensor, and reconnect. Always verify microamp reading (typically 2–6 µA) after installation.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY1REA120224ABWA packaged gas heating equipment. Verify your existing part number on the sensor body or equipment wiring diagram before ordering. Our parts team is available to confirm fitment prior to purchase — contact us before you order if you have any questions.