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This is the factory OEM Economizer Control Board Kit (part number HH63AW001), the exact replacement specified by Carrier for the TFACCY50HJ484264 packaged rooftop unit. The economizer control board manages outdoor air damper positioning, free-cooling logic, and ventilation sequencing. When this board fails, you may experience erratic damper behavior, loss of economizer function, HVAC system fault codes, or a complete inability to control outdoor air intake — all of which reduce unit efficiency and can trigger code violations in commercial applications.
Compatibility: Engineered specifically for the Carrier TFACCY50HJ484264 commercial packaged rooftop unit with economizer. Always verify your existing board's part number against HH63AW001 before ordering. Need fitment confirmation? Our HVAC parts team is available to verify compatibility before you buy — no guesswork required.