OEM Carrier Flame Sensor LH680534 (Replaces LH33WZ521) for Model PG95SAS60080CBAA

This is the factory OEM replacement flame sensor for the Carrier PG95SAS60080CBAA 95% AFUE gas furnace. The flame sensor — also called a flame rod or flame detector — is a safety component that continuously monitors the burner to confirm that gas has successfully ignited. When it detects a flame, it sends a small microamp signal back to the control board to keep the gas valve open. A failed or contaminated flame sensor causes the furnace to light briefly, then shut down after just 5–8 seconds, typically triggering a lockout fault. This is one of the most common furnace service calls in the field.

• OEM Part Numbers: LH680534 (current/superseding) | LH33WZ521 (original, now discontinued) — both are covered by this listing. Includes pre-attached lead wire for direct plug-in installation.
• OEM vs Generic: This is a genuine Carrier factory part, meeting exact microamp output and porcelain insulator tolerances. Aftermarket sensors can exhibit inconsistent signal output, causing nuisance lockouts even after installation.
• Install Difficulty: 1/5 — One of the easiest furnace repairs. Tools needed: 1/4" hex driver or nut driver. Turn off power and gas before servicing. Locate the sensor in the burner box, disconnect the lead wire, remove the single mounting screw, and reverse to install. Do not touch the rod with bare hands — skin oil degrades signal quality.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered by 3:00 PM local time.

Compatibility: Designed for the Carrier PG95SAS60080CBAA 80,000 BTU, 95% AFUE single-stage gas furnace. Also cross-compatible with select Carrier, Bryant, and Payne furnace models that originally specified LH33WZ521 or LH680014. Verify your existing part number on the sensor body or unit wiring diagram before ordering. Our parts specialists are available to confirm fitment — contact us before you buy.