OEM Carrier Flame Sensor 50HJ401431 for Model PY1RJA036074ABWA

This is the genuine OEM flame sensor for the Carrier PY1RJA036074ABWA packaged gas unit. The flame sensor — also called a flame rod — is a critical combustion safety component. It detects the presence of a flame during each ignition cycle by passing a small electrical current through the burner flame. When carbon buildup or corrosion degrades the rod, the furnace control board can no longer confirm ignition, causing the system to shut down the gas valve within 5–8 seconds of burner light-off. The result is a frustrating no-heat condition with repeated lockout codes. Replacing the sensor with this factory-matched OEM part restores full combustion confidence and eliminates nuisance lockouts.

• Specs: OEM Part # 50HJ401431 | Stainless steel sensing probe | Alumina-coated rod | Approx. 2.9″ W × 4″ D × 1.75″ H | Compatible with 24V AC furnace control circuits
• OEM vs Generic: This is a genuine Carrier OEM part — not an aftermarket substitute. OEM flame sensors are calibrated to exact microamp thresholds required by the Carrier control board. Generic sensors may read low, triggering false shutdowns or failing prematurely in demanding packaged-unit environments.
• Install difficulty: 2/5 — Turn off gas and power before starting. Tools needed: 1/4″ hex driver or nut driver, needle-nose pliers. Disconnect the single wire lead, remove the mounting screw, swap the sensor, and reconnect. Clean the burner area before reinstalling. Always verify flame signal (microamps) with a multimeter after replacement.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day when placed before cutoff.

Compatibility: Direct OEM replacement for Carrier PY1RJA036074ABWA packaged gas heating units. Verify your existing part number on the unit's wiring diagram or data plate before ordering. Our parts specialists are available to confirm fitment — just reach out before you buy. Order today and get same-day shipping from NationalHVACParts.com.