Samsung MH020FPEA Service Manual page 166

The Feature of Key in remote control(cont.)
No BUTTON FUNCTION
Off Timer button.
The Off Timer enables you to switch off the air conditioner automatically after
a given period of time that is from 30 minutes to 24 hours.
9
To set the operating time, press the button one or more times until the required
time display.
Timer Set/Cancel button.
After setting On Timer or Off Timer, press the button to set it completely.
10
And press the button again to cancel On Timer or Off Timer set.
Digital On/Off button.
11
If you want to turn off the display during operation press the button.
Samsung Electronics 11-2