SiUS181305E Indoor Unit
Printed Circuit Board Connector Wiring Diagram 24
3.4 FDXS09/12LVJU, CDXS15/18/24LVJU
Control PCB
Caution Replace the PCB if you accidentally cut the jumpers other than JA, JB, and JC.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
1) S1 Connector for AC fan motor
2) S7 Connector for AC fan motor (Hall IC)
3) S21 Connector for centralized control (HA)
4) S26 Connector for display PCB
5) S32 Connector for indoor heat exchanger thermistor
6) H1, H2, H3 Connector for terminal board
7) FG (GND) Connector for terminal board (ground)
8) JA Address setting jumper
Refer to page 111 for detail.
9) JB Fan speed setting when compressor stops for thermostat OFF
JC Power failure recovery function (auto-restart)
Refer to page 112 for detail.
10) LED A LED for service monitor (green)
11) FU1 (F1U) Fuse (3.15 A, 250 V)
12) V1 Varistor
H2
H1
H3
FG
JB
S21
2P292535-1
LED A JCJA
S7
S1
FU1
S26
V1
S32
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