York 025-45462-042 Drive Board

York 025-45462-042​ is the EEV driver board (EEV Driver Board) for the cooling unit of York (York/Johnson Controls), also known as IB-G. Its function is to receive instructions from the control board (MicroPanel/OptiView) of the unit, drive the stepper motor of the electronic expansion valve to precisely adjust the opening degree, control the refrigerant flow and superheat, and is a key execution component for capacity adjustment and energy efficiency control of the unit. When replacing it, power must be disconnected. Pay attention to the direction of the socket and the wiring number; abnormal EEV driver operation usually manifests as uncontrolled superheat, fluctuation in suction pressure, or the unit reporting faults related to the expansion valve or superheat. Before purchasing, it is recommended to check the label of the old board against the unit model, Style code.