SiUS181305E
Indoor Unit
Printed Circuit Board Connector Wiring Diagram
22
3.3
FTXS15/18/24LVJU
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 DC fan motor
2) S21
Connector for centralized control (HA)
3) S25
Connector for INTELLIGENT EYE sensor PCB
4) S32
Indoor heat exchanger thermistor
5) S41
Connector for swing motors
6) S46
Connector for display PCB
7) S47
Connector for signal receiver PCB
8) H1, H2, H3, FG
Connector for terminal board
9) JA
Address setting jumper
Refer to page 111 for detail.
10)JB
Fan speed setting when compressor stops for thermostat OFF
JC
Power failure recovery function (auto-restart)
Refer to page 112 for detail.
11)LED A
LED for service monitor (green)
12)FU1 (F1U)
Fuse (3.15 A, 250 V)
13)V1
Varistor
2P227881-6
FU1
(3.15A)
V1
H1
H2
FG
H3
LED A
S32
S1
S41
S46
S25
S47
S21
JB
JA
JC
