OEM Carrier Flame Sensor 50HJ401431 for Model PY1RPA036074ABWA

This is the genuine OEM Carrier flame sensor (part #50HJ401431), factory-specified for the Carrier PY1RPA036074ABWA packaged gas heating unit. The flame sensor is a critical safety component: its stainless steel sensing rod sits in the burner flame and passes a small microamp current back to the control board to prove combustion is occurring. When the sensor fails — typically due to oxidation or carbon buildup on the rod — the control board cannot confirm ignition and will shut off the gas valve within 5 to 8 seconds of burner startup, triggering a safety lockout. The result is a system that appears to light and then immediately shuts down, often repeating 2–3 times before locking out entirely.

• Specs: OEM Part # 50HJ401431 | Stainless steel sensing probe | Alumina-coated rod | Dimensions: 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, calibrated to the exact microamp threshold your control board expects. Aftermarket sensors often drift in sensitivity, causing nuisance lockouts or — worse — delayed shutoff. Always choose OEM for a safety-critical component like a flame sensor.
• Install difficulty: 2/5 — Turn off gas and power at the breaker before beginning. Locate the flame sensor rod in the burner assembly; it is secured by a single 1/4" hex screw. Disconnect the wire lead, swap the sensor, and reconnect. Tools needed: 1/4" nut driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if reusing). Test through a full ignition cycle after reinstall.
• Warranty: 1-year OEM factory warranty against defects. In-stock orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Confirmed fit for Carrier model PY1RPA036074ABWA packaged gas heating unit. Verify your unit's data plate and existing part number before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.