OEM Carrier Flame Sensor (48GS400192) for Model PY3PNA060090AB

This is the factory-specified OEM flame sensor for the Carrier PY3PNA060090AB gas furnace. The flame sensor — also called a flame rod — uses ionization/rectification to detect the presence of a lit burner. When it works correctly, a small DC microamp signal passes through the flame back to the control board, confirming ignition. When the sensor fails or becomes coated with oxidation, that signal drops below the board's threshold and the furnace shuts off the gas valve within 5–8 seconds as a safety precaution. The result: a furnace that lights, runs briefly, then goes to hard lockout — often repeating 3 tries before locking out entirely.

• OEM Part Number: 48GS400192 | 90-degree mounting bracket | Factory-matched microamp output for Carrier IFC boards
• OEM vs Generic: This is a genuine Carrier OEM part with the correct rod geometry, insulator material, and bracket angle. Generic sensors can have slightly different rod lengths or bracket offsets, causing marginal flame signal readings and nuisance lockouts — especially in cold weather starts.
• Install Difficulty: 2/5 — Turn off power and gas before starting. Tools needed: 1/4" nut driver, flat-head screwdriver, needle-nose pliers. Disconnect the single wire connector, remove the mounting screw, swap the sensor, and re-secure. Always clean the burner port area before reinstalling. Verify microamp signal with a multimeter in series if symptoms persist.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered specifically for the Carrier PY3PNA060090AB gas furnace. Always confirm your existing sensor's part number on the component label before ordering. Questions about fitment? Our HVAC parts team verifies compatibility before every order — contact us before you buy.