OEM Carrier Flame Sensor 48GS400192 for Model PY3GNA036090AB

This OEM flame sensor (part number 48GS400192) is the factory-specified replacement for the Carrier PY3GNA036090AB gas furnace. The flame sensor — also called a flame rod — is a safety-critical component that detects the presence of a burner flame and sends a microamp signal to the control board to confirm ignition. When the sensor becomes coated with oxidation or fails entirely, the furnace will light briefly and then shut down within 5–8 seconds, triggering a lockout code and leaving your home without heat.

• Specs: OEM part number 48GS400192 | Single-rod flame sensor | Factory-matched microamp output | Direct plug-and-play fitment for Carrier PY3GNA036090AB
• OEM vs Generic: This is a genuine OEM Carrier flame sensor, manufactured to exact factory specifications. Generic aftermarket sensors can vary in rod length, bracket angle, and microamp output — leading to nuisance lockouts or, worse, unsafe operation. OEM ensures first-time reliability and compliance with factory safety standards.
• Install difficulty: 2/5 — Turn off all power and gas before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, fine steel wool or emery cloth (for rod cleaning diagnosis). Always verify gas is off and system has cooled before removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY3GNA036090AB gas furnace. Always verify your unit's full model and serial number on the data plate before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you buy — order with confidence and get back up and running fast.