Wiring Design - LG LT-C1260CL 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

YL(SIGNAL)
AUTO SWING OPERATION SET TEMP
Timer Operation unit Program set
On Off
Set no. Time 01 03 05 07 09
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
NOTICE
Wiring Diagram for Cooling only
OUTDOOR WIRING DIAGRAM
FAN
MOTOR
CAPACITOR
BL
BR
4 5
TO INDOOR UNIT
Indoor Unit 1
Terminal(Local Supply)
Block
Connector
RED(12V)
Main PCB
BR(GND) #1
YL(SIGNAL)
BR(GND)
FAN SPEED SUB FUNCTION
Room Temp
HI AUTO Heater Preheat
MED JET Defrost Humidify
LO Filter Out door
Time ZONE 1 2 3 4
11 13 15 17 19 21 23
Wired Remote Controller
2
COMP
C S R
PTC
F C H
BL
TB
BL
POWER
4 8 1
RELAY
2
6 0
BL
RD
TERMINAL
7 8 9
BLOCK
3854A20072M
Main PCB
Indoor Unit 2
Terminal(Local Supply)
Block
Connector
Main PCB
....
#2
BR(GND)
....
YL(SIGNAL)
Slide Switch
OP7
Remote
Controller
PCB
INDOOR WIRING DIAGRAM
CAPACITOR
BR
INDOOR
MOTOR
DRAIN
PUMP
BL
BR
1(L) 2(N)
POWER
INPUT
TO OUTDOOR UNIT
–28–
Indoor Unit 16
Terminal(Local Supply)
Block
Connector
Main PCB
#16
Connecting Cable(Local Supply)
TEMP PIPE
THERMISTOR FLOAT S/W
THERMISTOR
CN-ROOM CN-PIPE CN-FLOAT
MAIN PCB ASSY
YL
CN-MOTOR
BK
OR
CN-D/PUMP
FUSE T3.15A
BR
BL CN-POWER
CN-DISP
RD
GN/YL
4 5 7 8 9
DISPLAY PCB ASSY
TERMINAL
BLOCK
STEP
MOTOR
REMOTE
CONTROL
3854A20072L