LG CC18AWU Owner's Manual page 10

Operating Instructions
The controls will look like the following.
SLEEP
Operation Mode
Cooling Operation
Auto Operation or Auto Changeover
Healthy Dehumidification Operation
Heating Operation (Only heat pump)
Air Circulation
10 Air Conditioner
Signal transmitter
SLEEP MODE AUTO BUTTON
Used to set sleep mode auto operation.
JET COOL/JET HEAT BUTTON
Used to start or stop the speed cooling
and heating.
The Jet Cool/Jet Heat operates fan in super
high speed.