OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA036074ABWA

This is the genuine OEM Carrier flame sensor (part #50HJ401431), the factory-specified replacement for the Carrier PY1REA036074ABWA packaged gas heating unit. The flame sensor is a critical safety component — it uses a small electrical current passed through a stainless steel sensing rod to confirm the presence of a burner flame after ignition. When the sensor rod becomes coated with oxidation or carbon buildup, its microamp signal drops below the control board's threshold, triggering a safety lockout. The telltale symptom is a burner that lights normally but shuts off within 5–8 seconds, repeating 3 times before locking out entirely.

• Specs: OEM part #50HJ401431 | Stainless steel sensing probe | Alumina-coated rod for corrosion resistance | Dimensions: approx. 2.9" W × 4" D × 1.75" H | Compatible with standard 24V AC control circuits
• OEM vs Generic: This is a genuine Carrier OEM sensor, calibrated to exact factory microamp specifications. Generic aftermarket sensors can have wider tolerance bands, causing nuisance lockouts or — worse — delayed shutoff responses. OEM is always the recommended choice for safety-critical combustion components.
• Install Difficulty: 2/5 — Straightforward single-screw mount replacement. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Always shut off gas supply and 24V power before servicing. Lightly sand the sensing rod with fine steel wool if reinstalling an old sensor; replace entirely if microamp reading is below 2µA.
• Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier PY1REA036074ABWA packaged gas/electric unit. Verify part number on your unit's existing sensor or data plate before ordering. Our team is available to confirm fitment — contact us before you order if you have any questions.