LG Multi V Plus II System - Control Box and Connecting Position of Wiring

54 Outdoor Unit
Electrical Wiring
Control box and connecting position of wiring
- Remove all of the screws at front panel and remove the panel by pulling it forward.
- Connect communication line between main and sub
outdoor unit through the terminal block.
- Connect communication lines between outdoor unit
and indoor units through the terminal block.
- When the central control system is connected to the
outdoor unit, a dedicated PCB must be connected
between them.
- When connecting communication line between out-
door unit and indoor units with shielded wire, con-
nect the shield ground to the earth screw.
WARNING
The temperature sensor for outdoor air should not be exposed to direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
UY2 Chassis
Inverter
FAN PCB
Main PCB
Noise Filter
Take care of the phase sequence
of 3-phase 4-wire power system
UW1 Chassis
Noise
Filter
Main
PCB
Magnet
switch
Inverter
PCB
Inverter
PCB
Reactor
Inverter
FAN PCB
Take care of the phase sequence
of 3-phase 4-wire power system
Bridge
diode
Reactor
Bridge
diode
Front Panel