SiUS121827E Indoor Unit
Part 3 Printed Circuit Board Connector Wiring Diagram 43
1.4 FDXS09/12LVJU, CDXS15/18/24LVJU
Control PCB
(A1P)
Replace the PCB if you cut a jumper unintentionally.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
The symbols in the parenthesis are the names on the appropriate wiring diagram.
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/signal receiver PCB (A2P)
5) S32 Connector for indoor heat exchanger thermistor
6) H1, H2, H3 Connector for terminal block
7) FG (GND) Connector for terminal block (ground)
8) JA Address setting jumper
∗ Refer to page 258 for details.
9) JB Fan speed setting when compressor stops for thermostat OFF
∗ Refer to page 261 for details.
10) JC Power failure recovery function (auto-restart)
∗ Refer to page 261 for details.
11) LED A LED for service monitor (green)
12) FU1 (F1U) Fuse (3.15 A, 250 V)
13) V1 Varistor
H2
H1
H3
FG
JB
S21
2P292535-1
LED A JCJA
S7
S1
FU1
S26
V1
S32
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