Carrier / Bryant CESO110074-00 Fan Relay Control Board – Tested Used. Used OEM fan relay control board removed from a working heating and air conditioning system and inspected prior to listing. Commonly found in select Carrier, Bryant, and Payne furnace applications where it controls blower motor operation and thermostat signal processing. OEM Carrier/Bryant/Payne control board. Fan relay and blower control functions. Thermostat terminals (R, Y, W). Electronic Air Cleaner (EAC) outputs. Integrated timing and relay circuitry. Durable screw terminal connections. Terminals and mounting points intact. No visible burned traces or damaged components observed. Normal cosmetic wear from previous installation. Important Compatibility Notice: Please verify all part numbers, board layout, terminal configuration, and furnace model compatibility before purchasing. Matching the exact part number is strongly recommended. Photos are of the actual control board you will receive. Installation damage, altered components, moisture intrusion, or evidence of parts swapping may void return eligibility.