The model number is 150-00-14. I see now it won't be as easy as reconnecting tubes, since that tube is just the drain hose. I'll just assume it has to do with the valve, so I called a local sprinkler place, and they groaned when I said it's a hydraulic system but I guess they have someone capable of dealing with it, so thanks for your answers. Hopefully it's an easy fix for someone who knows what they're doing... By the way, I'm pretty sure there is a backflow preventer. Coming out of the house ...
