OEM Carrier Flame Sensor (48GS400192) for Model PY1PEB048115AAAA

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY1PEB048115AAAA gas furnace. The flame sensor is a critical safety component mounted in the burner assembly. When the burner fires, the sensor rod detects the presence of flame via electrical rectification — a small microamp signal that proves to the control board that combustion is active. When this sensor fails or becomes coated with oxidation, the control board cannot confirm flame presence and shuts off the gas valve within 5–8 seconds of ignition, causing the classic "lights then goes out" lockout symptom. Repeated lockout cycles can trigger a hard fault code, leaving your home without heat.

• Part Number: 48GS400192 | 90-degree bend with integrated mounting bracket | Factory OEM replacement — no modifications required
• OEM vs Generic: The OEM sensor is manufactured to exact Carrier rectification tolerances. Generic sensors often produce weaker microamp signals, leading to nuisance shutdowns especially on aging control boards with reduced sensitivity thresholds.
• Install Difficulty: 2/5 — Turn off gas and power before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if reusing). Disconnect the single wire connector, remove the mounting screw, swap the sensor, and restore power. Confirm steady flame hold on first call for heat.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY1PEB048115AAAA gas furnace. Always verify the part number on your existing sensor or equipment data plate before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your heat restored today.