OEM Carrier Flame Sensor (50HJ401431) for Model PY1RPA090125ACWB

This is the genuine OEM Carrier flame sensor (part #50HJ401431) — the factory-specified replacement for the Carrier PY1RPA090125ACWB gas furnace. The flame sensor is a safety-critical component: its ceramic-mounted flame rod generates a small microamp current in the presence of a burner flame, signaling the control board that ignition was successful. When the sensor fails or becomes coated with oxidation, the control board receives no confirmation signal and shuts off the gas valve — typically within 5 to 8 seconds of ignition. The result is a furnace that lights briefly, then goes out, repeating the lockout cycle until a fault code is triggered.

• Specs: L-Bend style | Total length: 3½" | Distance to L-bend: 1½" | Bracket length: 1½" | Push-in connector | Country of Origin: USA
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact microamp sensitivity tolerances. Generic sensors often operate outside acceptable µA ranges, causing nuisance lockouts or delayed shutoff — a critical safety risk with gas appliances.
• Install Difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver or small nut driver, needle-nose pliers. Disconnect the single push-in wire connector, remove the mounting screw, swap sensor, reconnect. Always clear fault codes from the control board after replacement.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Engineered as the direct OEM replacement for the Carrier PY1RPA090125ACWB gas furnace. Verify your existing sensor's style (L-bend), total length, and connector type against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — no guesswork, no returns hassle.