OEM Carrier Flame Sensor LH680534 (Replaces LH33WZ521) for Model PG92SAS48080BAAA

This is the genuine OEM Carrier flame sensor for the Carrier PG92SAS48080BAAA gas furnace. The flame sensor is a critical safety component — a small metal rod positioned in the burner flame path that generates a micro-amp DC signal to prove to the control board that ignition has occurred. When the sensor's rod becomes coated with oxidation or the component fails entirely, the furnace will light briefly then shut down within 5–8 seconds, triggering a safety lockout. Repeated short-cycling with no heat output is the most common symptom of a failed flame sensor. Part number LH680534 is the current OEM replacement for the superseded LH33WZ521 and includes the factory lead wire harness for direct plug-in installation.

• OEM Part Numbers: LH680534 (current) | LH33WZ521 (superseded) — factory-direct replacement, exact fit for PG92SAS48080BAAA
• OEM vs Generic: This genuine Carrier part meets exact micro-amp sensing tolerances specified by the factory. Aftermarket sensors often drift outside tolerance, causing nuisance lockouts or worse — failure to detect a real flame-out safety condition.
• Install Difficulty: 2/5 — Turn off gas and power before beginning. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers. Disconnect the lead wire, remove the single mounting screw, swap the sensor, and reconnect. Always verify burner operation through a full heating cycle after replacement.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed for the Carrier PG92SAS48080BAAA 92% AFUE gas furnace. Also cross-references to multiple Carrier, Bryant, and Payne furnace models. Verify your existing part number on the sensor body or equipment data plate before ordering. Our fitment team is available to confirm compatibility — reach out before you order and we'll make sure you get the right part, shipped today.