OEM Carrier Flame Sensor (48GS400192) for Model PY3PEA048130AB

This is the genuine OEM Carrier flame sensor (part #48GS400192) — the factory-specified replacement for the Carrier PY3PEA048130AB gas furnace. The flame sensor is a critical safety component mounted in the burner assembly. Using the principle of flame rectification, it detects the microamp current produced when the burner lights and signals the control board that combustion is confirmed. When the sensor fails — typically due to oxidation on the sensing rod — the furnace will light, run for 5 to 8 seconds, then shut down on lockout. This cycle repeats until the fault is resolved.

• Part Specs: 90-degree sensing rod orientation | Includes mounting bracket | Factory-matched microamp sensitivity | OEM part number 48GS400192 | Manufacturer: Carrier
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances. Generic sensors can have inconsistent microamp sensitivity thresholds, causing nuisance lockouts or — worse — delayed safety shut-off. Trust the factory part for reliable ignition cycle performance.
• Install Difficulty: 2/5 — A straightforward repair for most DIYers. Power down and shut off gas before starting. Tools needed: 1/4" nut driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if desired). Disconnect the single wire harness, remove the mounting screw, swap the sensor, and restore power. Total time: approximately 15–20 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PEA048130AB gas furnace. Always cross-reference your unit's data plate and existing part number before ordering to confirm fitment. Not sure? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order. Order now and get it shipped today.