5/3 Solenoid Valve Trouble

Hi, I have a bunch of experience using 5/2 3/2 and 2 way solenoid valves but can't seem to get a 5/3 to work. There are two sets of electrical wiring on it, so I am assuming I just need to set one to LOW and it should pull the output to that side. I might have a faulty unit because I have tried every possible combination.

Hopefully this is the correct place to post this problem.

Thank you

Links to the datasheets and other tecnical info of those mysterious solenoids would be helpful.