OEM Carrier Flame Sensor (48GS400192) for Model PY3PEA048130NB

This is the factory OEM flame sensor for the Carrier PY3PEA048130NB gas furnace. The flame sensor (also called a flame rod) is a critical safety component mounted in the burner assembly. Using ionization/rectification technology, it detects the presence of a confirmed burner flame and relays a micro-amp signal back to the integrated furnace control board. If the board does not receive this signal within 5–8 seconds of ignition, it cuts gas flow and locks out the furnace — leaving you with no heat. A contaminated or failed sensor is one of the most common causes of nuisance lockouts in gas furnaces.

• OEM Part Number: 48GS400192 | 90-degree mounting bracket | Factory-matched rod material and insulator for precise micro-amp output
• OEM vs Generic: This is the genuine Carrier OEM part. Generic sensors may measure within spec when new, but use inferior rod alloys that carbon-foul faster, shortening service intervals and risking false lockouts.
• Install Difficulty: 2/5 — Shut off gas and power before servicing. Tools needed: 1/4" nut driver, fine steel wool or emery cloth (for rod cleaning verification), multimeter (micro-amp mode). Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reconnect. Always verify micro-amp reading on first fire-up.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier PY3PEA048130NB gas furnaces. Always cross-reference the part number on your existing sensor's mounting bracket before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before your order ships — contact us today and get this part on its way to you.