SiUS121827E Indoor Unit
Part 3 Printed Circuit Board Connector Wiring Diagram 37
1. Indoor Unit
1.1 FTXR09/12/18TVJUW(S), CTXG09/12/18QVJUW(S)
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.
1) S21 Connector for centralized control (HA)
2) S25 Connector for INTELLIGENT EYE sensor PCB (A3P)
3) S32 Indoor heat exchanger thermistor
4) S41 Connector for swing motors
5) S42 Connector for reduction motor (front panel mechanism) and limit
switch
6) S46 Connector for display/signal receiver PCB (A2P)
7) S200 Connector for DC fan motor
8) H1, H2, H3 Connector for terminal strip (indoor - outdoor transmission)
9) FG Connector for terminal strip (frame ground)
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) F1U, F2U Fuse (3.15 A, 250 V)
14) V1 Varistor
S42
S41
S32
JB
JC
S200
H3H2FG
S46
S21F2U S25
LED A
V1
F1U
H1
2P357399-6
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