Outdoor Unit SiUS12-928_B
29 Printed Circuit Board Connector Wiring Diagram
2. Outdoor Unit
2.1 2MXS18GVJU
Connectors and
Other Parts
Main PCB
Service Monitor PCB
MID1
1) S10 Connector for MID1 (indoor - outdoor transmission)
2) S15 Connector for COOL / HEAT mode lock
Refer to page 262 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) S31, S32 Connector for SPM
6) S33, S71 Connector for MID2 (inverter PCB)
7) S40 Connector for overload protector
8) S51, S101 Connector for service monitor PCB
9) S80 Connector for four-
way valve coil, defrost solenoid valve coil
10)S90 Connector for thermistors
(outdoor temperature, outdoor heat exchanger, discharge pipe)
11)S91 Connector for fin thermistor
12)S92 Connector for gas pipe thermistor
13)S93 Connector for liquid pipe thermistor
14)AC1, AC2 Connector for MID1 (power supply)
15)E Connector for ground
16)H1, H2 Connector for diode bridge
17)FU2 Fuse (3.15 A, 250 V)
18)V2, V5 Varistor
1) S52, S102 Connector for main PCB
2) LED A (H1P) LED for service monitor (green)
3) LED1 - LED4
(H2P - H5P)
LED for service monitor (red)
4) SW1 (S1W) Forced operation [ON/OFF] switch
Refer to page 256 for detail.
5) SW2 (S2W) Operation mode switch
Refer to page 256 for detail.
6) SW3 (S3W) Wiring error check switch
Refer to page 257 for detail.
7) SW4 (S4W) Priority room setting switch
Refer to page 261 for detail.
8) SW5 (S5W) NIGHT QUIET mode setting switch
Refer to page 263 for detail.
1) S11, HL, HN Connector for main PCB
2) HE Connector for ground
3) FU1 Fuse (30 A, 250 V)
4) V3 Varistor