OEM Carrier Flame Sensor 48GS400192 for Model PY3GNA060090AB

This OEM Carrier flame sensor (part #48GS400192) is the factory-specified replacement for the Carrier PY3GNA060090AB gas furnace. The flame sensor is a critical safety component mounted in the burner assembly — it uses ionization/rectification technology to confirm that a flame is actually present after ignition. When the sensor is coated with oxidation or fails electrically, your furnace will light briefly and then shut itself down within 5 to 8 seconds, triggering a lockout code. This is one of the most common furnace service calls and one of the easiest DIY repairs.

• Specs: 90-degree mounting angle | Stainless steel flame rod | Factory-matched signal sensitivity | Dimensions approx. 4.9" L × 1.75" H × 1.6" W
• OEM vs Generic: This is a genuine OEM Carrier part, manufactured to exact factory electrical tolerances. Generic sensors can produce weak or inconsistent ionization signals, causing nuisance lockouts even after cleaning — OEM is the reliable fix.
• Install Difficulty: 1/5 — Shut off gas and power before starting. Tools needed: 1/4" hex driver, small flat-head screwdriver. Disconnect the wire lead, remove one mounting screw, swap the sensor, reconnect, and test. Most technicians complete this repair in under 15 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNA060090AB gas furnace. If your furnace log shows a "flame sense" or "ignition failure" fault code and your unit lights then cuts off shortly after, this part is almost certainly the cause. Verify your model number on the data plate inside the blower door before ordering. Have fitment questions? Our HVAC specialists confirm compatibility before you buy — reach out today and we'll ship the same business day.