OEM Carrier Flame Sensor (48GS400192) for Model PY2PPB042060NB

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY2PPB042060NB packaged gas/electric unit. The flame sensor — also called a flame rod — uses ionization/rectification technology to detect the presence of a burner flame during each heating cycle. When the inducer starts and the burner lights, this sensor reads a small microamp signal through the flame and signals the control board to keep the gas valve open. If the sensor is coated with oxidation or has failed, the control board sees no flame signal and shuts down the gas valve as a safety measure — typically within 5 to 8 seconds of ignition. The result: your unit lights briefly, then goes out, locking out after 3 attempts.

• Specs: 90-degree rod angle with integrated mounting bracket | Approx. dimensions: 4.9" (H) × 1.75" (W) × 1.6" (L) rod | OEM Carrier part #48GS400192 | Factory-matched ionization signal tolerance
• OEM vs Generic: This OEM sensor is manufactured to exact Carrier specifications, ensuring precise microamp detection thresholds. Generic alternatives often use lower-grade rod alloys that oxidize faster, leading to repeat failures within one heating season.
• Install difficulty: 2/5 — Single screw mounting bracket and one wire connector. Turn off power and gas before servicing. Tools needed: 1/4" nut driver, needle-nose pliers. Lightly sand the rod with fine steel wool if reinstalling a used sensor. Always confirm the connector seats fully.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB042060NB packaged gas/electric unit. Verify your unit's OEM part number on the data label inside the access panel before ordering. Not sure it fits? Contact our HVAC parts team — we verify fitment before you buy. Order before 3 PM EST for same-day shipping.