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 is the genuine factory replacement for the GB1AAV048111AGJA gas furnace. The flame sensor confirms that a flame is present after ignition by generating a small microamp signal; if it cannot detect flame, the control board shuts the gas valve to keep your home safe. Over time the sensor rod develops an oxide and carbon buildup that causes short cycling, where the burners light then shut off after a few seconds. Replacing the sensor with this exact-fit Carrier component restores a clean, reliable flame signal and stops nuisance lockouts. This part is precisely matched to the GB1AAV048111AGJA furnace assembly for correct rod length and mounting. Installation is easy and usually takes 10-15 minutes with a single screw and a quarter-inch nut driver after shutting off power and gas. We recommend a qualified technician verify the microamp reading. Genuine OEM ensures correct material and durability over generics. In stock and ships same-day when you order before 3PM CST.
This part is compatible with Carrier model GB1AAV048111AGJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.