OEM Carrier Flame Sensor LH680534 / LH33WZ521 for Model PG92SBS48100CAAA

This is the genuine OEM Carrier flame sensor — part number LH680534 (with lead wire), the current factory replacement for the superseded LH33WZ521 — designed for the Carrier PG92SBS48100CAAA packaged gas furnace. The flame sensor is a safety-critical component: a small rod positioned in the burner flame that passes a micro-amp current through the flame to prove ignition. When it fails — typically due to oxidation or carbon buildup on the sensing rod — the control board cannot confirm a lit burner and will shut off the gas valve within 5–8 seconds, causing the frustrating symptom of a furnace that lights briefly, then immediately shuts down and locks out.

• Part Numbers: LH680534 (primary, with lead wire) | LH33WZ521 (superseded OEM number — LH680534 is the direct factory replacement)
• OEM vs Generic: This is a genuine Carrier factory part with the pre-attached lead wire included (LH680534), ensuring exact connector fit and factory-spec rod geometry. Generic sensors often feature incorrect rod length or bracket angles that cause nuisance lockouts even after installation.
• Install Difficulty: 2/5 — Turn off power and gas 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 rod, reconnect the lead. Always verify micro-amp reading (1.5–4 µA typical) with a multimeter on initial startup.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed for the Carrier PG92SBS48100CAAA packaged gas unit. Also fits select Carrier, Bryant, and Payne furnace models including the PG92SBS and PG92SCS series. Verify your model and data plate before ordering — our team is available to confirm fitment. Order today and get back to heat fast.