Just got my new Earthbox watering system. It won't shut off when the box is full. I have the regulator higher than the fill tube. Any other suggestions?
To rule out a malfunctioning valve, try the waterglass test:
1. Take out the valve from the EB fill tube. Water should be dribbling from the little opening.
2. Fill a clear glass with water (I estimate the height of the water in the reservoir)
3. Dip the bottom end of the AWS unit into the water. If the dribbling stops, the AWS is working. The problem is in the box. It must be absolutely level.
If that doesn't work, then it sounds like something is stuck in the open position of the valve. Perhaps some debris found its way around either the pressure sensor in the tube or up in the head where the switch is. Have you tried submersing the whole thing in a nice sudsy bath and giving it a good swishing around?
If the valve is nice and clean, then I would check Donald1800's test for finding an air leak by submerging the valve head in water and
gently blowing into the tube. If you see bubbles, then you have an air leak and the valve needs replacing.
Mickie