Hi,
yeah a manual would be great!
May well need to take the top off the control box so we can get a look inside, its a really useful test to put a multimeter on a Dir(ection) output and observe that its level changes.
You never know, the manufacturer may have been kind enough to put LEDs on the outputs and you wouldn't even need a multimeter.
A couple of well focused and composed photos of the inside of the box would be good.
Craig