OEM Carrier Flame Sensor 50HJ401431 for Model PY1RJA036074ABWB

This is the genuine OEM flame sensor (part #50HJ401431) factory-specified for the Carrier PY1RJA036074ABWB packaged gas heating unit. The flame sensor — also called a flame rod — uses microamp electrical current through a stainless steel sensing probe to verify that a burner flame is actually present after ignition. When the sensor becomes coated with oxidation or simply fails, the control board cannot confirm combustion and will shut off the gas valve within 5–8 seconds as a safety lockout, leaving your system running in no-heat mode. Replacing this low-cost part is one of the most common and cost-effective furnace repairs available.

• Specs: OEM Part #50HJ401431 | Stainless steel sensing probe | Alumina-coated rod for corrosion resistance | Compact form factor: 2.9" W × 4" D × 1.75" H | Compatible with standard 24V AC control circuits
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances. Generic sensors may present mismatched probe geometry or incorrect microamp sensitivity, causing nuisance lockouts or delayed safety shutoff — risks not worth taking on a safety-critical component.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: 1/4" hex driver or nut driver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (to verify microamp draw). Disconnect the single wire lead, remove the mounting screw, swap the sensor, and reconnect. Average technician time: under 10 minutes.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 3 PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY1RJA036074ABWB packaged gas unit. Always cross-reference the part number on your existing sensor and your unit's data plate before ordering. Our parts team is available to verify fitment — just reach out before you buy. Order now and your part ships today.