Vacuum Mode - LG Multi V Plus II System Installation Manual

Refrigerant piping installation

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
Caution
ODU operation stops during vacuum mode. Compressor can't operate.
50 Outdoor Unit
ODU power reset
Vacuum mode setting
ODU V/V OPEN
Main EEV, SC EEV OPEN
IDU EEV OPEN
Vacuum mode cancellation method
Master main PCB DIP switch OFF( No.11,14)
Power reset
Vacuum mode cancellation