OEM Carrier Flame Sensor 48GS400192 for Model PY2PNB042060AA

This OEM flame sensor (part number 48GS400192) is the factory-specified replacement for the Carrier PY2PNB042060AA gas furnace. The flame sensor is a critical safety component that detects the presence of a burner flame using an ionization/rectification method — it passes a small electrical current through the flame and confirms combustion is active. When the sensor becomes coated with oxidation or fails entirely, the furnace control board cannot verify ignition, causing the system to shut off the gas valve within 5–8 seconds and enter a safety lockout.

• Specs: 90° angled flame rod with integrated mounting bracket | Factory OEM tolerance | Compatible with standard 1/4" push-on wire terminal | Approximate rod length 1.6" | Overall dimensions approx. 4.9" × 1.75"
• OEM vs Generic: This is a genuine Carrier OEM part, ensuring exact rod geometry, insulator material, and mounting alignment. Generic sensors may use inferior ceramic insulators or slightly misaligned rod angles, leading to weak or intermittent flame signal and repeated lockouts.
• Install difficulty: 2/5 — Turn off gas and power before servicing. Tools needed: 1/4" hex driver or ¼" screw, needle-nose pliers, fine steel wool or emery cloth (for light cleaning during inspection). Photograph the wire connection before removal. Straightforward single-screw swap in most installations.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PY2PNB042060AA gas furnace. Always verify the OEM part number on your existing sensor or equipment data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork required.