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Bard part number 8301-096-001ABX is a factory programmed UPC3 Core 2 control board supplied boxed, used as the primary unit controller in compatible Bard wall mounted HVAC equipment to manage core operating functions, onboard diagnostics, and system communication. As an OEM Bard control board, it is intended to restore proper unit sequencing and reliable operation when replacing a failed or damaged controller, but correct application depends on the exact model and existing software version on site. Before ordering, confirm the unit model and control platform and follow Bard guidance for PLC and controller software matching when swapping boards to avoid compatibility issues and nuisance faults.