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) verifies a stable burner flame during every heating cycle by sending a microamp rectification signal to the control board. As the sensing rod oxidizes or cracks with age, the board loses that signal and shuts off the gas valve—causing short-cycling, repeated lockouts, or a furnace that ignites then quickly drops out. This sensor is an exact direct-fit replacement for the Carrier GB1AAV036045AEJA gas furnace, matching the original probe length, mounting bracket, and terminal so no modifications are required. Installation is easy for most DIY homeowners: turn off power, remove a single screw, unplug the spade connector, and install the new rod. Sanding a corroded sensor offers only a temporary fix—a worn rod should be replaced for reliable starts. The genuine OEM part ensures proper flame rectification and avoids the nuisance faults common with generic substitutes. In stock and ships same-day when you order before 3PM CST. Restore safe, dependable heating with the exact flame sensor Carrier built for your furnace.
This part is compatible with Carrier model GB1AAV036045AEJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.