GREE - To convert GREE Inverters from Cooling mode to Heating Mode simply Press "MODE" Button From Remote control to toggle from Cooling to Heating mode as given in picture. The Icon
GREE Gen3 Smart Home Triple-Zone 24,000 BTU 2 Ton Ductless Mini Split Air Conditioner with Heat, Inverter, Remote 230-Volt MULTI24VIR302HP - The Home Depot