Service Manual

Outdoor Unit SiUS121502E
30 Printed Circuit Board Connector Wiring Diagram
4. Outdoor Unit
Main PCB
(PCB1)
1) S Connector for terminal board (indoor - outdoor transmission)
2) S15 Connector for COOL / HEAT mode lock
∗ Refer to page 186 for detail.
3) S20 (white) Connector for electronic expansion valve coil A port
4) S21 (red) Connector for electronic expansion valve coil B port
5) S22 (blue) Connector for electronic expansion valve coil C port (24/36 class)
6) S23 (yellow) Connector for electronic expansion valve coil D port (36 class)
7) S40 Connector for overload protector
8) S70 Connector for DC fan motor
9) S80 Connector for four way valve coil
10) S90 Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
11) S92 Connector for gas pipe thermistor
12) S93 Connector for liquid pipe thermistor
13) S201, S202 Connector for service monitor PCB
14) HL1, HN1 Connector for terminal board (power supply)
15) E1, E2 Connector for ground wire
16) U, V, W Connector for compressor
17) FU1, FU2 Fuse (3.15 A, 250 V)
18) FU3 Fuse (30 A, 250 V)
19) V2, V3, V401 Varistor