How to make the central air conditioner cool?

Central air conditioning modulation refrigeration is as follows:

1. Press the on key on the central air-conditioning controller panel to turn it on.

2. The default mode is the cold or hot mode when the air conditioner was turned off last time, as shown in the figure, the default mode is the cold air mode.

3. Press M key to switch to warm air mode.

4. Press M key again to return to air conditioning mode.

5. Press the up and down arrows and the fan icon to adjust the temperature and wind speed.