Outdoor Unit SiMT041311E9 Printed Circuit Board Connector Wiring Diagram2. Outdoor UnitPCB Detail1) S20 Connector for electronic expansion valve coil2) S21 Connector for humidifying rotor motor and humidifyingthermistor3) S22 Connector for damper motor4) S40 Connector for overload protector5) S45 Connector for thermal fuse (102°C)6) S70 Connector for DC fan motor7) S72 Connector for humidifier fan motor8) S80 Connector for four way valve coil9) S90 Connector for thermistors (outdoor temperature, outdoorheat exchanger, discharge pipe)10)S91 Connector for liquid pipe thermistor11)S101 Connector for humidifying heater12)S501 Connector for limit switch13)HR1, HR2, HR3,HR4Connector for reactor14)HK1, HK2, HK3 Connector for hygroscopic fan motor15)HL1, HN1, S Connector for terminal board16)E1, E2 Connector for earth wire17)U, V, W Connector for compressor18)FU1, FU2 Fuse (3.15 A, 250 V)19)FU3 Fuse (30 A, 250 V)20)V3, V5 Varistor21)LED A LED for service monitor (green)