OEM Carrier Flame Sensor (48GS400192) for Model PY3PEA042060NA

This is the factory OEM replacement flame sensor for the Carrier PY3PEA042060NA gas furnace. The flame sensor — also called a flame rod — is a critical safety component that uses ionization/rectification technology to confirm the presence of a burner flame during each heating cycle. When it detects a valid flame signal, it allows the gas valve to stay open and the heating cycle to continue. A failed or contaminated sensor causes the furnace to light briefly, then shut down after just 5–8 seconds, triggering a fault lockout. This is one of the most common furnace service calls, and in most cases, replacing this inexpensive OEM part resolves the issue immediately.

• Specs: 90° mounting angle | Includes mounting bracket | Approx. dimensions: 4.9" (H) × 1.75" (W) × 1.6" (L) rod | Factory-matched ionization rod geometry for correct signal output
• OEM vs Generic: The OEM Carrier 48GS400192 is manufactured to exact factory tolerances for rod angle, rod length, and connector fit. Generic flame sensors may produce inconsistent microamp readings, leading to nuisance lockouts or premature failure of the control board.
• Install difficulty: 1/5 — One of the simplest furnace repairs available. Tools needed: 1/4" hex-head or Phillips screwdriver. Turn off power and gas before servicing. Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reconnect. Clean the porcelain insulator if contaminated with oxidation.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY3PEA042060NA packaged gas/electric units. Always verify your existing part number on the sensor body or equipment wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and we'll ship today.