Fan not turning on

[Nilao]

I'm not saying that one is the same as mine but of it's similar then the input from the supply (fan solenoid) is on the side with 2 ports. It will be the port closest to the electromagnet. The port on the bottom is exhaust. The other side with the single port is the outlet to the fan hub. It should pass air through until you flip the switch to energize the valve, then it vent the pressure from the fan hub out which applies the clutch engaging the fan.