OEM Carrier Flame Sensor LH680534 (Replaces LH33WZ521) for Model PG95SAS60120DBAA

This is the genuine OEM replacement flame sensor for the Carrier PG95SAS60120DBAA gas furnace. The flame sensor is a critical safety component — a metalium rod mounted in the burner assembly that conducts a small microamp current through the flame to prove ignition. If the sensor is coated with oxidation or has failed, the furnace control board cannot confirm flame presence and will shut off the gas valve within 5–8 seconds of each ignition attempt, causing the classic short-cycling "lights then goes out" symptom. This updated OEM part ships as LH680534 (Flame Sensor with Lead) and is the factory-authorized successor to the original LH33WZ521.

• OEM Part Numbers: LH680534 (current) | LH33WZ521 (superseded) — direct factory replacement, no modifications required
• OEM vs Generic: Genuine Carrier OEM sensors are manufactured to exact microamp threshold tolerances. Aftermarket units often exhibit drift in flame-current sensitivity, leading to nuisance lockouts or, worse, delayed fault detection — both safety and reliability risks.
• Install Difficulty: 2/5 — Shut off gas supply and disconnect power before servicing. Tools needed: 1/4" hex driver or nut driver, needle-nose pliers, multimeter (to verify microamp draw at 1–4 µA). Photograph wiring orientation before removing the lead connector. Clean burner assembly while sensor is out.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed for the Carrier PG95SAS60120DBAA 95% AFUE gas furnace. Also fits select Carrier, Bryant, and Payne 59-series and PG-series furnace models — verify your model number and OEM part number on the unit data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy.