LG Multi V CRUN Series Service Manual page 206

Installation
Position of rotary switch on the indoor unit
Cassette, Duct, Convertible type indoor unit
Wall Mounted type indoor unit
Artcool type indoor unit
206 Outdoor Unit
Group ID S/W
Indoor unit ID rotary S/W
Group ID rotary S/W
Indoor unit ID rotary S/W
Group ID rotary S/W
Indoor unit ID rotary S/W