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This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY3PNA060130AA gas furnace. The flame sensor (also called a flame rod) uses ionization/rectification technology to confirm that a burner flame is present after the igniter fires. When this sensor fails or becomes coated with oxidation, the furnace's integrated furnace control (IFC) board can no longer verify combustion — triggering a safety lockout. The classic symptom: your furnace lights normally, runs for 5–8 seconds, then shuts off and attempts two more retries before going into hard lockout.
Compatibility: Designed and factory-specified for the Carrier PY3PNA060130AA gas furnace. Always cross-reference the part number on your existing sensor or your unit's wiring diagram before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork required. In stock and ready to ship today.