How to adjust the air conditioning in Gree Hotel?

Press the "Timing+▲" key for 5 seconds at the same time in the power-off state to enter the energy-saving setting. At this time, the text or icon of "energy saving" and the icon of cooling mode will be displayed, and the text or icon of "energy saving" will flash to display the upper and lower temperature limits of the temperature zone. Use the "▲" and "_" keys to set the upper and lower temperature limits (setting range is 16-30). Press the Mode button to switch the cooling and heating modes. Single cooling mode can only set the lower limit temperature of cooling and energy saving, and cannot switch to the upper limit temperature of heating and energy saving.