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Installation Manual
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Table 14: Standard (Gen 4) Wall-Mounted SBL, SCL Chassis Wiring Diagram Legend
WIRING
Standard Wall-Mounted SBL, SCL Chassis
Figure 58: Standard (Gen 4) Wall-Mounted SBL, SCL Chassis Wiring Diagram
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Engineering Manual for additional information.
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-HVB*
Air cleaner*
Air cleaner 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-EXT1
External ON / OFF controller
External ON / OFF controller connection
CN-TH1
Return air and inlet pipe thermistor
Return air and inlet pipe thermistor connection
CN-TH2
Outlet pipe thermistor
Outlet pipe thermistor connection
CN-TH3
Float switch
Float switch connection