The Daikin-McQuay 5018656 Printed Circuit Assembly is an original equipment manufacturer (OEM) electronic control board designed to manage and regulate HVAC system operations. It works by processing electrical signals and coordinating equipment functions to support reliable system performance. This replacement component is used in compatible Daikin HVAC equipment, including select air... https://www.partshnc.com/5018656-daikin-mcquay-printed-circuit-assembly