Electrical Wiring Diagram - LG ARNU 073 SER2 Engineering Manual

StandaRd Wall-Mounted

Electrical Wiring diagram

SB and SC Frames
Figure 17: ARNU053~153SBL4, ARNU183-243SCL4 Wiring Diagram.
Table 24: SB, SC Frame Wiring Diagram Legend.
PCB Connection
CN-POWER
CN-MOTOR
CN-LIMIT
CN-HVB
CN-LEV
CN-U/D
CN-DISP2
CN-DISP1
CN-CC
CN-485
CN-REMO
CN-TH1
CN-TH2
40 | StAndArd
Purpose
AC Power supply
Fan motor output
Safety switch
Air clean
EEV output
Step motor
Display
Display
Dry contact
Communication
Remote controller
Air / inlet pipe thermistor
Outlet pipe thermistor
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PLASMA
Function
AC Power line input for indoor controller
Motor output of BLDC
Front panel open / closed position
Air clean control
EEV control output
Step motor output
Display of indoor status
Display of indoor status
Dry contact line
Connection between indoor and outdoor units
Remote control line
Air / inlet pipe thermistor connection
Outlet pipe thermistor connection