40 | StAndArd
MUL
TI V W
all-Mounted Indoor Unit Engineering Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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StandaRd Wall-Mounted
Electrical Wiring diagram
SB and SC Frames
PCB Connection
Purpose
Function
CN-POWER
AC Power supply
AC Power line input for indoor controller
CN-MOTOR
Fan motor output
Motor output of BLDC
CN-LIMIT
Safety switch
Front panel open / closed position
CN-HVB
Air clean
Air clean control
CN-LEV
EEV output
EEV control output
CN-U/D
Step motor
Step motor output
CN-DISP2
Display
Display of indoor status
CN-DISP1
Display
Display of indoor status
CN-CC
Dry contact
Dry contact line
CN-485
Communication
Connection between indoor and outdoor units
CN-REMO
Remote controller
Remote control line
CN-TH1
Air / inlet pipe thermistor
Air / inlet pipe thermistor connection
CN-TH2
Outlet pipe thermistor
Outlet pipe thermistor connection
Figure 17: ARNU053~153SBL4, ARNU183-243SCL4 Wiring Diagram.
PLASMA
Table 24: SB, SC Frame Wiring Diagram Legend.