Indoor Unit; 20/25 Class - Daikin FTXM-K Series Service Manual

SiBE041434E

1. Indoor Unit

1.1

20/25 Class

Control PCB
(PCB1)
1) S6
2) S25
3) S26
4) S32
5) S200
6) S403
7) FG1, FG2
8) H1, H2, H3
9) V1
10)JA
11)JB
12)JC
13)LED A
14)FU1 (F1U)
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.
Note: The symbols in the parenthesis are the names on the appropriate wiring diagram.
Printed Circuit Board Connector Wiring Diagram
Connector for swing motor (horizontal blade)
Connector for INTELLIGENT EYE sensor PCB
Connector for display PCB
Connector for indoor heat exchanger thermistor
Connector for DC fan motor
Connector for adaptor PCB (option)
Connector for terminal board (frame ground)
Connector for terminal board (indoor - outdoor transmission)
Varistor
Address setting jumper
∗ Refer to page 112 for detail.
Fan speed setting when compressor stops for thermostat OFF
∗ Refer to page 114 for detail.
Power failure recovery function (auto-restart)
∗ Refer to page 114 for detail.
LED for service monitor (green)
Fuse (3.15 A, 250 V)
S32
S26
LED A
S200
FU1
V1
H1
H3
H2
S6
JA JC JB
FG1, FG2
2P297453-2
Indoor Unit
S25
S403
8