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Bard part number 8301-068-002E is a UPC3 (Unit Performance Controller) control board used in Bard wall mounted HVAC equipment to manage key unit functions and safety logic, including coordinating calls for heating or cooling, fan operation, and system protections through the unit’s wiring harness connections. The manufacturer reference to UPC3 firmware (Fusion-Tec 1.0.5) indicates this board is a programmed OEM controller intended to match specific Bard configurations, so verifying the exact unit model and any required firmware or revision level before ordering is important for proper communication and reliable operation. As a genuine Bard replacement board, 8301-068-002E is the right choice when troubleshooting points to a failed or damaged controller and you need factory correct fit and performance.