LG ARNU18GS5 2 Series, ARNU24GS5 2 Series Manual page 26

LCS(Light Commercial System) Indoor unit
2. Wall Mounted
(3) Group Control 3
Mixture connection with indoor units and Fresh Air Intake Unit
FAU
Master
Display Error Message
Master
In case of connecting with standard indoor unit and Fresh Intake Unit, separate Fresh Air Intake
Unit with standard units.
(Because setting temperature are different.)
Other than those, it is same with Group Control 1.
FAU FAU
FAU
Slave
Standard Standard
Dip Switch & Group Control Setting _ 11
LGAP Network System
Master Slave
Master
FAU FAU
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
GND
Signal
12 V
Standard Standard