LG ARUN038GS2 Installation Manual page 81

Vacuum Mode
This function is used for creating vacuum in the system after compressor replacement, ODU parts replace-
ment or IDU addition/replacement.
Vacuum mode setting method
Main PCB
SW01S
Main PCB
Master main PCB DIP switch ON ( No.11,14)
SW02B
Main PCB
Press the black button Main PCB (5 sec.)
SW01V
Vacuum mode setting
Main EEV, SC EEV OPEN
CAUTION
ODU operation stops during vacuum mode. Compressor can't operate.
ODU power reset
ODU V/V OPEN
IDU EEV OPEN
Vacuum mode cancellation method
Master main PCB DIP switch OFF( No.11,14)
Power reset
Vacuum mode cancellation
Installation Manual 81
Test Run