This is a common irrigation problem. You set the controller to start running at 6 a.m. for five zones, ten minutes each zone. The cycle should be finished at 6:50 a.m., but the zones are still running at 8:30 a.m. Why are the sprinklers repeating runs?
Often the answer is an improperly programmed controller. But before we look at programming, it’s helpful to first understand some of the basic terms and features associated with controllers and irrigation systems.
Basic Terms:
Valve
A valve is the part of the sprinkler system that receives signals from the controller. These signals tell the valve to open, so water can flow to the sprinklers, or to close, which will stop the water flow.
