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This is a genuine OEM Carrier Factory Authorized Part (HH63AW001), the factory-specified DCV Economizer Control Board Kit for the Carrier TFACCY48TM480038 packaged rooftop unit. The economizer control board serves as the decision-making hub for your unit's economizer cycle — continuously monitoring outdoor air conditions, CO₂ levels (DCV mode), and damper position to blend indoor and outdoor air for maximum energy efficiency and indoor air quality. When this board fails, symptoms include an economizer damper stuck open or closed, erratic outdoor air intake, loss of demand-controlled ventilation, elevated energy consumption, and failed building energy code compliance inspections.
Compatibility: Engineered as a direct OEM replacement for Carrier TFACCY48TM480038 commercial packaged rooftop units equipped with a DCV economizer system. Also cross-references Honeywell W7212A1017 for applicable configurations. Verify your unit's economizer control part number on the equipment data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — order today and get same-day shipping!