OEM Carrier Flame Sensor (48GS400192) for Model PY2PNB060090AA Gas Furnace

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY2PNB060090AA gas furnace. The flame sensor is a safety-critical 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 keeps the gas valve open and allows normal heating operation. A failed or carbon-fouled sensor cannot read the ionization current correctly — causing the control board to cut gas flow as a safety precaution, typically 5–8 seconds after ignition. The result: the furnace lights briefly, then shuts down and goes into lockout, repeating the cycle with no heat delivered.

• Part Specs: 90-degree mounting angle | Compact rod-style flame sensor | Factory-matched ionization current range | Approx. 4.9″ L × 1.75″ H × 1.6″ W
• OEM vs. Generic: This is a genuine Carrier OEM part — not an aftermarket substitute. OEM sensors are manufactured to exact ionization sensitivity tolerances, ensuring reliable flame detection and minimizing nuisance lockouts common with off-spec generic sensors.
• Install Difficulty: 2/5 — Straightforward replacement. Turn off power and gas before servicing. Tools needed: ¼″ hex driver, needle-nose pliers, and a soft cloth or fine steel wool to clean the mounting bracket. Always inspect the wire harness connector for corrosion before installing the new sensor.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PNB060090AA gas furnace. Verify your unit's model and data plate before ordering to ensure correct fitment. Our team is available to confirm compatibility — order with confidence and enjoy fast, same-day shipping on in-stock parts.