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Bard part number 8612-024 is a DC3000 series main controller board used in Bard telecom and equipment-shelter lead/lag control systems, where dependable staging and rotation of multiple wall-mount HVAC units is critical. As the primary control PCB in the DC3000 controller assembly, it manages low-voltage control outputs to connected units and supports the controller’s operating logic and alarm functions required for harsh-environment cooling applications. This OEM Bard replacement board is the right choice when troubleshooting points to a failed DC3000 controller PCB, helping restore correct sequencing, stable temperature control, and proper controller operation; confirm compatibility by matching your controller model and the Bard service literature before ordering.