OEM Carrier Flame Sensor 48GS400192 for Model PY3PPA042090NA

This OEM flame sensor (part #48GS400192) is the factory-specified replacement for the Carrier PY3PPA042090NA gas furnace. The flame sensor is a critical safety component — it uses ionization/rectification technology to confirm that a burner flame is actually present after ignition. When the sensor rod detects the flame, it allows the gas valve to remain open and the heating cycle to continue. A failed or fouled flame sensor causes the furnace to light briefly, then shut down within 5–8 seconds, triggering repeated lockout faults and a no-heat condition.

• Specs: 90° mounting bracket | Flame rod sensor | OEM part #48GS400192 | Dimensions approx. 4.9"L × 1.75"H × 1.6"W | Factory-matched ionization sensitivity
• OEM vs Generic: This OEM Carrier sensor is manufactured to exact factory tolerances for reliable microamp signal output. Generic flame sensors often have inconsistent rod coatings and mounting geometry, leading to nuisance shutdowns and repeat service calls.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reinstall. Clean the burner area of any soot before installing.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PPA042090NA gas furnace. Verify your existing sensor's mounting angle (90°) and wire connector style against your unit's data plate before ordering. Our team is available to confirm fitment — just reach out before you buy. Order now and your part ships today.