LG multi V PLUS

138 Indoor Unit
Wiring Diagrams
7. Wiring Diagrams
3854A20315L
FAN
MOTOR
BR YL
GN/YL
AC PWB ASM DC PWB ASM
OR
BK
TRIAC
SH-CAPA
FUSE
250V AC/T2A
CN-POWER
CN-MOTOR
CN-AC/DC CN-AC/DC
CN-COMM
BUS-A
BUS-B
BR BL WH BK GN/YL
1(L) 2(N) 3 4
CN-TH1
CN-SW/2 CN-SW/3
CN-STEP2CN-STEP1
CN-MAIN
CN-SW/1
FORCED
OPERATION
S/W
ROOM SENSOR
A/CL
PIPE-IN SENSOR
DISPLAY
CONNECTOR
PWB ASM
CN-U/D
CN-VFD
CN-HVB
H.V.
ASM
STEP
MOTOR-1
STEP
MOTOR-2
LIMIT S/W2
LIMIT S/W1
RD RD
BK BK
STEP
MOTOR
CN-L/R
STEP
MOTOR
LEV
CN-LEV
PIPE-OUT
SENSOR
CN-TH2
POWER
INPUT
TO OUTDOOR UNIT
CONNECTOR NUMBER SPEC COLOR DESCRIPTION
CONNECTOR NUMBER SPEC COLOR DESCRIPTION
CN-POWER AC POWER SUPPLY BLACK AC POWER LINE INPUT FOR INDOOR CONTROLLER
CN-MOTOR AC FAN MOTOR OUTPUT WHITE MOTOR OUTPUT OF PHASE CONTROL
CN-COM COMMUNICATION BLACK COMMUNICATION BETWEEN INDOOR AND OUTDOOR
CN-LEV LEV OUTPUT WHITE LEV CONTROL OUTPUT
CN-L/R STEP MOTOR BLUE STEP MOTOR OUTPUT FOR LEFT/RIGHT
CN-U/D STEP MOTOR WHITE STEP MOTOR OUTPUT
CN-TH1 ROOM/PIPE SENSOR WHITE ROOM & PIPE THERMISTOR
CN-TH2 DISCHARGE PIPE SENSOR RED DISCHARGE PIPE THERMISTOR
CN-SUC STEP MOTOR(FRONT) GRAY FRONT PANEL STEP MOTOR
CN-HVB AIR PURIFIER BLUE AIR PURIFIER OUTPUT
CN-VFD DISPLAY WHITE DISPLAY OF INDOOR STATUS
CN-CON SAFETY CONNECTION GRAY SAFETY OF INDOOR STATUS
CN_AC/DC AC/DC CONNECTION GRAY CONNECTION BETWEEN AC PCB AND DC PCB