OEM Carrier Flame Sensor (48GS400192) for Model PY1PEB048090AAAA

This is the factory OEM flame sensor for the Carrier PY1PEB048090AAAA gas furnace. The flame sensor — also called a flame rod — is a critical safety component that detects the presence of a live burner flame during the ignition sequence. Using a rectification (ionization) technique, it passes a small electrical current through the flame and reports back to the control board that combustion is occurring. When the sensor fails or becomes coated with oxidation residue, the control board cannot confirm ignition and shuts off the gas valve within 5–8 seconds of each ignition attempt, resulting in a no-heat lockout condition. Replacing this part with the correct OEM unit restores reliable flame detection and safe furnace operation.

• Specs: 90° mounting angle | Rod length approx. 1.6 in. | Overall dimensions approx. 4.9 in. × 1.75 in. | Carrier OEM part number 48GS400192
• OEM vs Generic: This is a genuine Carrier OEM sensor manufactured to exact factory tolerances. Generic sensors may have slightly different rod geometry or coating, leading to false shutoffs or shortened service life — especially in high-cycle applications.
• Install Difficulty: 2/5 — Straightforward single-screw mounting bracket removal. Tools needed: 1/4 in. hex driver or nut driver, fine steel wool or emery cloth (to lightly clean rod if reusing), multimeter for verification. Always turn off power and gas before servicing. Photograph wire harness connector before disconnecting.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered specifically for the Carrier PY1PEB048090AAAA gas furnace. If you are unsure whether this flame sensor matches your unit, check the OEM part number on the original sensor or your furnace's service data label. Our team is available to confirm fitment before you order — reach out before purchasing if you have any questions. In stock and ships today!