The GREE 30138000679 Main Control Board is an essential electronic component designed to manage and coordinate the operation of compatible HVAC equipment, including GREE air conditioners and heat pump systems. It processes signals from sensors and controls key functions such as temperature regulation, fan operation, and system performance. This control board is commonly used as a repl... https://www.partshnc.com/30138000679-gree-main-control-board