Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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This genuine OEM Carrier flame sensor (LH680534) is the rectification probe that proves a live burner flame on your GB1AAV048091ADJA gas furnace. When the rod becomes coated with carbon and oxidation or fails outright, the control board can no longer detect flame and closes the gas valve within seconds—causing the furnace to ignite, run briefly, then shut down and cycle repeatedly. This direct-fit replacement matches the original rod length and mounting bracket, so it installs into the burner assembly without modification. A light cleaning with fine emery cloth can temporarily restore a dirty sensor, but a pitted, cracked, or burned rod should be replaced to bring back stable operation. Installation is a beginner-friendly task, usually 10 to 15 minutes with one screw, after shutting off gas and power. Handle the sensor only by its porcelain base and keep the wire away from the flame path. Restoring reliable flame sensing ends frustrating short-cycling. Demand OEM quality for your Carrier furnace. In stock—orders before 3PM CST ship the same day.
This part is compatible with Carrier model GB1AAV048091ADJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.