The Marvair 92589 APR-AJ1710-4 PC Board is an OEM electronic control board designed to coordinate the operation of Marvair HVAC equipment, including wall-mounted air conditioners, heat pumps, and economizer units. It processes signals from thermostats, sensors, and safety controls to manage components such as the compressor, blower motor, and condenser fan. The board also provides bui... https://www.partshnc.com/marvair-92589-pc-board-apr-aj1710-4