OEM Carrier 90-Degree Flame Sensor (48GS400192) for Model PY2PNB024060AA

This OEM flame sensor is the factory-specified replacement for the Carrier PY2PNB024060AA gas furnace. The flame sensor — also called a flame rod — uses ionization/rectification technology to verify that a burner flame is present after ignition. When the control board calls for heat, the igniter lights the burners; the flame sensor then passes a small microamp current through the flame to confirm combustion. If the sensor is coated with oxidation or has failed entirely, the board will shut the gas valve within 5–8 seconds as a safety precaution, causing your furnace to short-cycle or lock out entirely. Replacing this low-cost part is one of the most common furnace repairs.

• Part Number: OEM Carrier 48GS400192 | 90-degree flame rod with mounting bracket | Factory-matched fit for PY2PNB024060AA
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to factory tolerance for exact microamp signal output. Aftermarket sensors can produce inconsistent readings, causing nuisance lockouts or, worse, unreliable flame detection — stick with OEM for safety-critical components.
• Install Difficulty: 2/5 — Power down the furnace and shut off the gas before starting. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single wire connector, remove the single mounting screw, swap the sensor, and reconnect. Lightly sand the rod with fine steel wool if reusing for cleaning. Total time: 10–20 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse — in stock and ready to go.

Compatibility: Designed as a direct OEM replacement for the Carrier PY2PNB024060AA gas furnace. This part is also used across multiple Carrier, Bryant, and Payne furnace platforms sharing the same flame sensor specification — verify your data plate or existing part number before ordering. Need fitment confirmation? Our HVAC parts team is standing by to verify compatibility before you buy.