OEM Carrier Flame Sensor 50HJ401431 for Model PY1REA120224ABWB

This is the factory OEM replacement flame sensor (part number 50HJ401431) for the Carrier PY1REA120224ABWB furnace. The flame sensor — also called a flame rod — is a critical safety component mounted in the burner assembly. It generates a small microamp current in the presence of a flame, signaling the control board that combustion is confirmed. When the sensor becomes coated with oxidation or carbon deposits, or fails entirely, the control board cannot verify a flame and will shut off the gas valve — typically 5 to 8 seconds after ignition — to prevent unburned gas from accumulating. The result: your furnace lights briefly, then locks out, leaving you without heat.

• Specs: OEM part number 50HJ401431 | Factory-matched flame rod geometry and ceramic insulator | Correct microamp output for Carrier IFC control board compatibility
• OEM vs Generic: This is a genuine OEM Carrier component. OEM flame sensors are factory-calibrated to produce the exact microamp signal your control board expects. Aftermarket sensors can read low, causing nuisance lockouts even when the burner is functioning correctly.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" or 5/16" hex driver (to remove the sensor mounting screw), emery cloth or fine steel wool (to clean rod if reusing), and a multimeter with microamp capability to verify signal after install. Always shut off the furnace at the disconnect before working in the burner compartment.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PY1REA120224ABWB furnace. Always cross-reference the part number on your existing sensor and your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.