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Bard part number 8301-068-004 is an OEM UPC3 FUSION-TEC WR control board used in the control panel of Bard FUSION-TEC wall-mount air conditioner systems. This electronic control module is the primary board that coordinates unit operation and communicates with system components so the equipment can run and respond correctly under load. Because UPC3 boards may be tied to specific software revisions, confirm compatibility by matching your unit model and control panel parts list before ordering, and plan for any required site-wide software alignment when replacing a UPC3 board to avoid communication or sequencing issues.