LG DMC24DB-1 Owner's Manual page 21

Auto restart
In case the power comes on again after a power failure, the unit operates automatically to the previous
operating conditions.
So there is no need of activating this function by pressing any key or button.
In the initial mode, the fan operates at a low speed and the compressor starts about 3 minutes later.
As the compressor starts, the fan speed also resumes its previous setting mode.
In case of absence for a long time while power failure, turn off main power to avoid
undersired Auto restart.
NOTICE
This feature is enabled by factory default setting, but you can disable it by
pressing the ON/OFF button for 6 seconds. The unit will beep twice and the
indicator lamp(2) will blink 4 times.
To enable it, press the button again for 6 seconds. The unit will beep twice
and the indicator lamp(1) will blink 4 times.
Helpful information
Fan speed and cooling capacity.
The cooling/heating capacity indicated in the specification is the value
when the fan speed is set to high, and the capacity will be lower at
low or medium fan speed.
High fan speed is recommended when you wish to cool/heat the room
quickly.
Maintenance and Service
ON/OFF
button
High
Speed
Owner's Manual 21