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SiUS121827E Indoor Unit
Part 3 Printed Circuit Board Connector Wiring Diagram 41
Caution
Note
1.3 FTXS15/18/24LVJU
Control PCB
(PCB1)
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 DC fan motor
2) S21 Connector for centralized control (HA)
3) S25 Connector for INTELLIGENT EYE sensor PCB (PCB4)
4) S32 Indoor heat exchanger thermistor
5) S41 Connector for swing motors
6) S46 Connector for display PCB (PCB3)
7) S47 Connector for signal receiver PCB (PCB2)
8) H1, H2, H3. FG Connector for terminal strip
9) JA Address setting jumper
∗ Refer to page 258 for details.
10) JB Fan speed setting when compressor stops for thermostat OFF
∗ Refer to page 261 for details.
11) JC Power failure recovery function (auto-restart)
∗ Refer to page 261 for details.
12) LED A LED for service monitor (green)
13) FU1 (F1U),
FU2 (F2U)
Fuse (3.15 A, 250 V)
14) V1 Varistor
2P227881-6
FU1
V1
H1
H2FGH3
LED A
S32
S1S41
S46
S25
S47
S21
JB
JA
JC
FU2
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