OEM Carrier Flame Sensor 48GS400192 for Model PY3PEA048115AB

This is the factory OEM replacement flame sensor for the Carrier PY3PEA048115AB gas furnace. The flame sensor — also called a flame rod — uses ionization/rectification to detect the presence of a burner flame during each heating cycle. When the sensor becomes coated with oxidation or fails entirely, the furnace control board cannot confirm ignition and triggers a safety lockout, causing the unit to ignite briefly then shut off within 5–8 seconds. Repeated no-heat calls and error codes pointing to flame sensing are the hallmark symptoms of a failed or fouled flame sensor.

• Part Number: OEM Carrier 48GS400192 | 90-degree flame rod with factory mounting bracket included — drops in without modification
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory metallurgy and rod geometry specifications. Aftermarket sensors can have incorrect rod length or angle, causing nuisance lockouts even after installation. OEM is the correct fix the first time.
• Install Difficulty: 2/5 — Single wire connector and one mounting screw. Tools needed: 1/4" or 5/16" nut driver, fine steel wool or emery cloth (for cleaning the old rod if testing), multimeter (to verify microamp output). Always shut off power and gas before servicing. Takes 15–30 minutes for most homeowners.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse — order by 3 PM local time for same-day dispatch.

Compatibility: Designed specifically for the Carrier PY3PEA048115AB packaged gas/electric unit. Confirm your existing sensor is a 90-degree style with bracket before ordering — check the data plate on your unit or contact our fitment team for free verification. In stock and ready to ship today. Don't let a $25 part leave your home without heat — order now.