OEM Carrier Flame Sensor 48GS400192 for Model PY3PEA060090NB

This is the factory OEM flame sensor (part number 48GS400192) specified for the Carrier PY3PEA060090NB gas furnace. The flame sensor — also called a flame rod — is a safety component that detects the presence of a burner flame by passing a small micro-amp current through the flame to ground. When the sensor becomes coated with oxidation or carbon buildup, its ability to pass that current degrades. The furnace control board interprets this as a "no flame" condition and shuts down the gas valve, resulting in the classic symptom: the burner ignites normally, runs for 5–8 seconds, then shuts off — repeating up to three times before locking out entirely.

• OEM Part Number: 48GS400192 | Manufactured to exact Carrier factory specifications | Direct drop-in replacement — no modification required
• OEM vs Generic: This OEM unit is precision-matched to the PY3PEA060090NB's control board micro-amp threshold. Generic sensors may have differing rod geometry or coating tolerances that cause nuisance lockouts even after cleaning.
• Install Difficulty: 2/5 — Turn off gas and power at the breaker before servicing. Tools needed: 1/4" hex driver or nut driver, fine steel wool or emery cloth (to lightly clean rod if reusing), multimeter to verify micro-amp signal post-install. Flame sensor is typically secured by a single screw to the burner assembly bracket.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY3PEA060090NB packaged gas heating unit. Always verify your existing part number printed on the sensor body or the unit's data plate before ordering. If you have any fitment questions, our HVAC parts specialists are available to confirm compatibility before you buy — ensuring the right part ships the first time.