LG AHNW146A0 Owner's Manual page 24

Owner's instruction
Programming : Setting Sleep Reservation
You can easily turn-off(sleep) reservation.(ONLY enable when unit is operating.)
24 Air-to-Water Heat Pump Owner's Manual
1 Press programming button to enter the
Programming mode. Repeat pressing button
to select [sleep reservation]. (the segment
flashing)
Ex) Setting Simple Reservation time as '3'
hours.
2 Press up, down button to adjust the
reservation time.
3 If you finish the setting, press setting/cancel
button to complete programming.
4 Press exit button to exit or system will
automatically release without any input after
25 seconds.