OEM Carrier Flame Sensor 48GS400192 for Model PY3PEA036090NB

This is the factory OEM replacement flame sensor for the Carrier PY3PEA036090NB packaged gas/electric unit. The flame sensor — also called a flame rod — is a safety-critical component that detects the presence of a burner flame during each ignition cycle. When it fails or becomes coated with oxidation, the control board cannot confirm ignition and will shut off the gas valve within 5–8 seconds of startup, triggering a safety lockout. The result: a furnace that briefly lights, then goes cold — often misdiagnosed as a gas valve or igniter failure.

• Specs: Total length 4 5/8" | Distance to bend 3" | Distance to end 1 5/8" | 120V gas furnace application | Country of origin: USA
• OEM vs Generic: This is the exact factory-specified OEM part. OEM flame sensors are calibrated to the precise microamp threshold your Carrier control board expects. Generic sensors may produce inconsistent current signals, causing nuisance lockouts or unreliable ignition.
• Install difficulty: 2/5 — Turn off gas supply and disconnect power before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Locate the sensor on the burner assembly, disconnect the single-wire harness, remove one mounting screw, and reverse to install. Clean any oxidation from the rod with fine steel wool before installation if reusing the wiring harness.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse stock.

Compatibility: Designed as a direct OEM replacement for the Carrier PY3PEA036090NB packaged gas/electric unit using OEM part number 48GS400192. Always verify your unit's data plate and existing part number before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence.