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Indoor Unit
SiUS041111
14
Printed Circuit Board Connector Wiring Diagram
1.2
15/18/24 Class
Connectors and
Other Parts
PCB (1): Control PCB
PCB (2): Signal Receiver PCB
PCB (3): Buzzer PCB
PCB (4): Display PCB
1) S1
Connector for DC fan motor
2) S6
Connector for swing motor (horizontal blades)
3) S21
Connector for centralized control (HA)
4) S26
Connector for buzzer PCB
5) S28
Connector for signal receiver PCB
6) S32
Indoor heat exchanger thermistor
7) H1, H2, H3, FG Connector for terminal board
8) JA
Address setting jumper
Refer to page 225 for detail.
JB
Fan speed setting when compressor stops for thermostat OFF
JC
Power failure recovery function (auto-restart)
Refer to page 227 for detail.
9) LED A
LED for service monitor (green)
10)FU1
Fuse (3.15 A, 250 V)
11)V1
Varistor
1) S29
Connector for control PCB
2) SW1 (S1W)
Forced cooling operation ON/OFF button
1) S27
Connector for control PCB
2) S38
Connector for display PCB
3) RTH1 (R1T)
Room temperature thermistor
1) S37
Connector for buzzer PCB
2) LED1 (H1P)
LED for operation (green)
3) LED2 (H2P)
LED for timer (yellow)