Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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This OEM Carrier flame sensor (LH680534) is the safety component that confirms your burner has actually ignited. Built for the GB1AAV036065ABJA gas furnace, it uses flame rectification to send a microamp signal to the control board, telling it to keep the gas valve open. When the sensor gets coated with carbon or oxidation, the furnace lights briefly then shuts down — the classic short-cycling complaint — because the board no longer senses flame. Replacing the sensor restores steady, uninterrupted heating. This genuine factory part matches the exact rod length, bracket, and terminal of your furnace for a precise fit. Installation is easy and DIY-friendly: turn off power and gas, remove the single mounting screw, unplug the wire lead, and install the new sensor in reverse — about 10 minutes. No special tools required. OEM construction ensures proper flame detection and long service life over cheaper universal rods. In stock and ships same-day when you order before 3PM CST. Fit guaranteed for the GB1AAV036065ABJA furnace.
This part is compatible with Carrier model GB1AAV036065ABJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.