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) confirms the burner has lit by sensing the flame's electrical rectification, telling the control board to keep gas flowing or to shut down safely. On the Carrier GB1AAV036111AGJA, a dirty, oxidized, or cracked flame sensor is the number-one cause of short-cycling, ignition lockout, and a furnace that lights then quickly drops out. This direct factory replacement is built to the precise resistance, rod length, and mounting specs of your unit for dependable flame proving. Installation is an easy 15-minute DIY job: shut off power, remove the burner-compartment mounting screw, unclip the spade connector, and slide the new sensor into place — handling only the ceramic base to keep the rod clean. No special tools needed. Restore steady, safe heating and stop nuisance lockouts with the correct OEM part for your furnace. In stock and ships same-day when your order is placed before 3PM CST.
This part is compatible with Carrier model GB1AAV036111AGJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.