How to set heating in Vienna hotel air conditioning

First press the "switch" button of Gree central air conditioning panel. Then press the "mode" button of Gree central air conditioning panel to switch to "heating mode". Then press the "Wind Speed" button of Gree central air-conditioning panel to adjust the wind speed of central air-conditioning. Finally, press the "Up and Down" button on the Gree central air-conditioning panel to adjust the temperature of the central air-conditioning.