OEM Carrier Flame Sensor (48GS400192) for Model PY2PNB024060AB

This is the genuine OEM replacement flame sensor for the Carrier PY2PNB024060AB gas furnace. The flame sensor — also called a flame rod — is a critical safety component mounted in the burner assembly. When the burner ignites, the sensor uses ionization/rectification technology to detect the presence of a live flame and sends a small microamp signal back to the control board to confirm combustion. If the board doesn't receive this signal within the trial-for-ignition window, it immediately shuts off the gas valve and locks out the furnace — typically after just 5 to 8 seconds of running. A worn, oxidized, or cracked sensor rod is one of the most common causes of a furnace that lights but then shuts off repeatedly.

• Part Specs: OEM Part # 48GS400192 | 90-degree rod angle | Includes mounting bracket | Compact form factor (~4.9" L × 1.75" H)
• OEM vs Generic: This is a genuine Carrier OEM sensor — not an aftermarket substitute. OEM sensors maintain precise microamp output tolerances that match your control board's detection threshold, ensuring reliable flame confirmation and preventing nuisance lockouts.
• Install Difficulty: 2/5 — Turn off gas supply and power before servicing. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers, and a multimeter (to verify microamp signal post-install). The sensor is accessed through the burner compartment and secured with a single screw. Lightly clean the rod with fine steel wool if oxidation is present on the old unit.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Designed as the factory-specified flame sensor for the Carrier PY2PNB024060AB gas furnace. Always cross-reference your unit's data plate and wiring diagram to confirm part fitment before installation. Our team is available to verify compatibility before you order — don't hesitate to reach out. Order now and your part ships today.