OEM Carrier Flame Sensor (48GS400192) for Model PY3PNA036090AA

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY3PNA036090AA gas furnace. The flame sensor (also called a flame rod) is a critical safety component that uses ionization/rectification technology to confirm that a burner flame is present after ignition. When functioning correctly, it passes a small microamp current through the flame to the control board. When it fails — typically due to oxidation or carbon buildup on the rod — the furnace will light briefly, then shut down after 5–8 seconds and enter a lockout sequence. This is one of the most common furnace service calls and one of the easiest DIY fixes.

• Specs: 90° rod angle | Includes mounting bracket | Rod dimensions approx. 4.9" L × 1.75" H | Direct OEM replacement for Carrier part 48GS400192
• OEM vs Generic: This is the factory-original Carrier part — not an aftermarket substitute. OEM sensors are calibrated to the exact microamp threshold your control board expects, reducing nuisance lockouts caused by marginal readings from off-spec generic rods.
• Install Difficulty: 1/5 — One of the simplest furnace repairs. Turn off gas and power, disconnect the single wire connector, remove one mounting screw, swap the sensor, and reconnect. Tools needed: flat-head or Phillips screwdriver, needle-nose pliers. No special training required.
• Warranty: 1-year OEM manufacturer warranty against defects. Orders placed before 3 PM ship same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PNA036090AA gas furnace. Before ordering, confirm the part number stamped on your existing sensor or reference your unit's wiring diagram. If you have any fitment questions, our HVAC parts team verifies compatibility before you order — no guesswork required.