The Daikin-McQuay 4011987 Printed Circuit Board Assembly is an electronic control component designed for compatible Daikin HVAC equipment. It processes electrical signals and coordinates system functions to support reliable operation. Used in compatible air conditioning units and other HVAC systems, this circuit board helps manage essential control operations and communication between... https://www.partshnc.com/daikin-mcquay-4011987-printed-circuit-board-assembly