LG ARUN038GS2 Installation Manual page 76

Refrigerant Auto Charging Function
This function charges appropriate amount of refrigerant automatically through cycle operation.
It can be used when refrigerant amount Isn't certain because of SVC and leakage.
Main PCB
SW01S
Main PCB
Set the Dip S/W.
SW01B
Refrigerant Auto Changing : 1,2,7 ON
SW02B
Main PCB
Press the black button on main PCB.
( Press until '508' is displayed )
SW01V
Main PCB
Press the black button on main PCB.
SW01V
IDU runs with cooling mode In designated order.
IDU and ODU are turned off when Auto Charging
is completed. Close the valve.
Main PCB
Press the black button
SW01V
Press the black button for 2 sec. after turning off
all of dip S/W.
76 Outdoor Unit
Start
Wait for 3 min. after power reset
Is it necessary to
charge refrigerant?
No
Completed.
Note
1. After installing the refrigerant charging
device
open the valve.
2. In case air temperature is out of guaranteed
temperature, it may end without performing
auto charging.
3. Refrigerant Charging Time may change
according to the charging amount.
(Refrigerant Charging Time : about 1.5 min/lb)
Yes
Press the black button
Refrigerant Auto
Charging Process
as shown below in figure,
*1)
*2)