Wiring Design; Main Pcb; Wired Remote Controller - LG LT-D5480HL Service Manual

3) Group Control(Optional Wiring)
• You can use a group control operation after connecting the brown and yellow wire of each air-conditioner.
• Remove the resistor "OP 7" in remote controller.
• It operates maximum 16 Units by only one Wired Remote Controller,
and each Unit starts sequentially to prevent overcurrent.

Wiring design

Terminal(Local Supply)
Block
RED(12V)
YL(SIGNAL)
BR(GND)
AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION
Room Temp
HI AUTO Heater Preheat
MED JET Defrost Humidify
LO Filter Out door
Time ZONE 1 2 3 4
Timer Operation unit Program set
On Off
Set no. Time 01 03 05 07 09 11 13 15 17 19 21 23
Features
• Use Only One Wired Remote Controller with several air conditioners(max. 16 Units)
• Random starting to prevent overcurrent.
CAUTION
• Be careful not to exchange the color of wires.
• The maximum length of connecting wire should be below 200m(25Ω) on connecting each units.
• Use a wire more than 0.5mm
Indoor Unit 1
Connector
RED(12V)

Main PCB

YL(SIGNAL)
YL(SIGNAL)
#1 BR(GND)
BR(GND)

Wired Remote Controller

2
Main PCB
Indoor Unit 2
Terminal(Local Supply)
Block
Connector
Main PCB
YL(SIGNAL)
#2
BR(GND)
....
Slide Switch
OP7
Remote
Controller
PCB
–29–
Indoor Unit 16
Terminal(Local Supply)
Block
Connector
Main PCB
.... YL(SIGNAL)
YL(SIGNAL)
BR(GND)
BR(GND)
Connecting Cable(Local Supply)
#16