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 is engineered for the GB3AAV024050ACJA gas furnace and is responsible for confirming the presence of a flame during ignition. When the sensor's rod becomes coated or cracked, the control board can no longer verify the burner flame and will shut the furnace down on a flame-failure lockout, leaving you without heat. Installing a fresh, factory-spec sensor restores reliable flame proving, eliminates short-cycling, and prevents nuisance lockouts. This part is built to the exact resistance and mounting specifications of your GB3AAV024050ACJA, so it drops straight into the original bracket without modification. Installation is straightforward and rated easy for most homeowners: shut off power and gas, remove the single mounting screw and spade connector, swap the sensor, and reconnect. Most jobs take under 15 minutes with a nut driver. Always inspect and gently clean surrounding burner components while you are in there. Orders placed before 3PM CST ship same-day, so you can get your heat back fast.
This part is compatible with Carrier model GB3AAV024050ACJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.