OEM Carrier Flame Sensor (50HJ401431) for Model PY1REA090125ACWB

This is the genuine OEM Carrier flame sensor, part number 50HJ401431, factory-specified for the Carrier PY1REA090125ACWB furnace. The flame sensor — also called a flame rod — is a safety component mounted inside the burner assembly. Once the igniter lights the burner, the sensor passes a small electrical current through the flame to confirm combustion is active. When the sensor fails or becomes coated with oxidation, the control board cannot verify the flame and will shut down the gas valve within 5–8 seconds as a safety lockout. The furnace may attempt 2–3 ignition cycles before posting a fault code. This is one of the most common furnace no-heat calls, and in most cases, replacing this sensor restores full operation immediately.

• Specs: L-Bend style | Total length: 3½" | Distance to bend: 1½" | Bracket length: 1½" | Push-in connector | Made in USA | OEM part number: 50HJ401431
• OEM vs Generic: This is a genuine Carrier factory part, manufactured to exact dimensional and conductivity tolerances. Aftermarket sensors may have incorrect rod geometry or inferior alloys that re-oxidize faster, leading to repeat service calls within one heating season.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the push-in wire connector, remove the single mounting screw, swap the sensor, and reconnect. Lightly clean the rod with fine steel wool before reinstalling if reusing. Total job time: 15–20 minutes.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before 3 PM local time ship same business day from our warehouse.

Compatibility: Designed for the Carrier PY1REA090125ACWB furnace. Always cross-reference your unit's data plate and the existing part number stamped on your current sensor before ordering to confirm fitment. Have questions? Our HVAC parts specialists verify compatibility before you buy — contact us anytime.