Wiring Diagrams 
Domestic Air Conditioner
9
4.Printed Circuit Board Connector Wiring
 Diagram 
4.1˖Indoor unit Connectors     
Connectors            
PCB(1) (Control PCB) For HSU09VHG(DB)
1) CN26 Connector for fan motor   
2) CN1 Connector for heat exchanger thermistor and Room temperature thermistor 
3) CN11    Connector for UP&DOWN STEP motor 
4) CON2 Connector for power N wire     
5) CON1 Connector for power L   
6) CN32    Connector for display board 
         7) C0N6,C0N8  Connector for ions generator 
                  8) CON7 Connector for communicate between the indoor board and the outdoor board 
9) CN27    Connector for fan motor’s PG back. 
10) CN34    Connector for long-range control 
11) CN20    Connector for room card 
         Note: Other designations 
PCB(1)    (Indoor Control PCB) 
1) SW1    Connector for Forced operation ON / OFF switch 
2) SW2    1 Select remote code A or B,2 Select 25 or 35 ,3 Select room card able or disable 
3) SW4    Select 20 or other, if select 20,SW2 must select 25(ON) 
         4) RV1  Varistor 
5) FUSE1    Fuse 3.15A/250VAC