The Gree 300078060066 Drive Board is an OEM electronic control component designed for Gree FLEXX DC inverter heat pump condensing units. It regulates inverter-driven operation by controlling electrical signals and coordinating compressor and fan motor functions for smooth system performance. This drive board is used with Gree FLEXX central air conditioning and heat pump outdoor units,... https://www.partshnc.com/gree-300078060066-drive-board