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This is a genuine OEM Carrier Economizer Control Board Kit (part number HH63AW001), factory-specified for the Carrier TFACCY48TM480102 commercial rooftop unit. The economizer control board is the intelligence center of the economizer subsystem — it continuously monitors outdoor air conditions via enthalpy or dry-bulb sensors and commands the outdoor air damper to modulate, bringing in free cooling when conditions allow. When this board fails, symptoms typically include a damper stuck fully open or closed, loss of demand-controlled ventilation (DCV) response, erratic free-cooling cycles, fault codes on the unit controller, or complete economizer lockout with no outside air modulation.
Compatibility: Direct OEM replacement for Carrier model TFACCY48TM480102 commercial packaged rooftop units equipped with the DCV economizer option. Cross-references Honeywell W7212A1017. Verify your existing board's part number against HH63AW001 before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence and get it shipped today.