OEM Carrier Flame Sensor 50HJ401431 for Model PY1RJA048115AAWA

This is the genuine OEM flame sensor (part #50HJ401431) factory-specified for the Carrier PY1RJA048115AAWA packaged gas heating unit. The flame sensor is a critical safety component: its stainless steel rod sits directly in the burner flame and passes a small microamp current to the control board to confirm combustion. When the sensor fails — typically due to oxidation or carbon buildup on the probe — the control board cannot verify a flame is present and shuts off the gas valve within 5–8 seconds as a safety lockout. The result is a system that appears to light, then immediately shuts down and locks out, leaving occupants without heat.

• Part Specs: OEM Part # 50HJ401431 | Stainless steel sensing rod | Alumina-coated probe | Dimensions: approx. 2.9" W × 4" D × 1.75" H | Weight: 0.09 lbs | Compatible with 24V AC control circuits
• OEM vs. Generic: This factory-matched OEM sensor maintains precise microamp output tolerance required by the Carrier control board. Generic sensors may fall outside the accepted µA range, causing nuisance lockouts or false flame readings — always use OEM in commercial packaged units.
• Install Difficulty: 2/5 — Shut off gas and power before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, multimeter (set to microamps to verify 2–6 µA reading after installation). Always confirm gas valve closes fully before restarting the unit.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day when ordered before cutoff. Fast, reliable delivery to your door or jobsite.

Compatibility: Engineered as a direct OEM replacement for Carrier model PY1RJA048115AAWA. Verify your unit's data plate and existing part number before ordering. Our parts specialists are available to confirm fitment — don't hesitate to reach out before you buy.