OEM Carrier Flame Sensor 50HJ401431 for Model PY1RPA120180ABWB

This is the genuine OEM Carrier flame sensor, part number 50HJ401431, factory-specified for the Carrier PY1RPA120180ABWB packaged gas heating unit. The flame sensor — also called a flame rod — monitors the burner flame by passing a small microamp DC current through the flame itself. If the control board doesn't detect sufficient flame current within the first few seconds of ignition, it shuts off the gas valve as a safety measure. A failed or coated sensor is one of the most common reasons a furnace or packaged unit lights briefly, then shuts down after 5–8 seconds, triggering a lockout fault code. Cleaning may temporarily restore function, but a degraded rod should be replaced to restore reliable ignition.

• Specs: OEM Part # 50HJ401431 | Stainless steel sensing rod with alumina-coated probe | Compact form factor (approx. 2.9" W × 4" D × 1.75" H) | Compatible with standard 24V AC furnace control circuits | Weight: 0.09 lbs
• OEM vs Generic: This is a genuine Carrier OEM part — not an aftermarket substitute. OEM flame sensors are calibrated to the exact microamp sensitivity thresholds your control board expects. Generic sensors can produce inconsistent current readings, causing nuisance lockouts or, worse, delayed shutoff responses.
• Install Difficulty: 2/5 — Straightforward swap on most packaged units. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, and a multimeter (to verify microamp draw if desired). Always shut off the gas supply and 24V control power before removing the sensor. Disconnect the single wire connector, remove the mounting screw, slide out the old rod, and reverse to install.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. Orders placed by 3 PM local time ship same business day from our warehouse. Fast, reliable delivery so your system is back up quickly.

Compatibility: Designed as the factory-matched replacement for the Carrier PY1RPA120180ABWB packaged rooftop/gas unit. Always verify part number 50HJ401431 against your unit's wiring diagram or service label before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.