The Gree Electric Appliances 300027060987 Main Board is a control circuit board designed to regulate and coordinate operations in Gree air conditioning systems. It processes input from temperature sensors and user settings to control the compressor, fan motors, and related components for accurate system performance. Commonly installed in ductless mini-split and residential HVAC units,... https://www.partshnc.com/300027060987-gree-main-board