OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA090180ACWB

This is the genuine OEM flame sensor (part #50HJ401431) factory-specified for the Carrier PY1REA090180ACWB packaged gas heating unit. The flame sensor — also called a flame rod — is a critical safety component that detects the presence of a burner flame during each ignition cycle. It passes a small electrical current through the flame to confirm combustion; if the control board does not receive confirmation within seconds, it shuts off the gas valve as a safety measure. A failed or carbon-fouled sensor causes the classic symptom: the burner lights briefly, then shuts down after 5–8 seconds, often triggering a lockout fault code. The unit may attempt 2–3 retries before locking out entirely, leaving your system with no heat.

• Specs: OEM Part # 50HJ401431 | Stainless steel sensing probe | Alumina-coated, corrosion-resistant rod | Dimensions approx. 2.9"W × 4"D × 1.75"H | Weight: 0.09 lbs | Compatible with 24V AC control circuits
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances for probe geometry and coating thickness. Generic flame sensors may have slightly different rod lengths or coatings that result in weak microamp readings, causing nuisance shutdowns even after cleaning.
• Install Difficulty: 2/5 — Straightforward replacement. Turn off power and gas before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single wire lead, remove the mounting screw, swap the sensor, and reconnect. Always confirm the probe is positioned correctly in the burner flame path before restarting.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Verified fit for Carrier model PY1REA090180ACWB packaged gas/electric heating unit. If you are unsure of your exact model or variant, check the data plate on your unit and contact our team — we verify fitment before every order. Order today and get your system back to safe, reliable operation fast.