Wire broken or not connected. Programming is incorrect. Sprinkler system with low pressure in one of its zones is a normal problem that every household experience. Inspect malfunctioning sprinkler heads while the water supply is off, and clear blockages with a thin, straight-edged tool such as a screwdriver. Flow control stem screwed down, shutting valve off. A sprinkler system with a zone that will not turn on or off has either a malfunctioning timer, zone valve or a short in the low-voltage wire. You can do some of the things I have mentioned without the help of a plumber. An experienced technician uses certain visual clues to reduce the possibilities while diagnosing the system. Not sure if it is the sprinkler heads. If the valve opens and sprinklers turn on, your valve is working and you’ll need to check the controller and field wiring. The way you do this is by a simple process of elimination. Check The Dumb Stuff. Zone 2 of my irrigation system has 6 pop-up sprinkler heads but the last two do not pop up, nor is there any water coming from them at all. Two of the heads will not work. Set your volt meter to DC Volts. One or More Zones Will Not Turn on or Stay on. They are completely dry, even in the flex lines they are attached to. My assumption is that there is a break in the main PVC line after the last working head. Tip: There are labeled photos of some of the more popular valve models showing … Continue reading How to Fix a Automatic Irrigation Valve that Won’t Open → The most common cause of individual sprinklers not coming on is blockage. Then there is not enough pressure to pop the sprinkler, so one nipple, or a sprinkler that has come loose, can cause a problem.” When you suspect that the problem may be electrical, checking the timer is typically a good place to start. If the valve won’t open at all, or doesn’t fully open, start with the obvious things just to be certain. Do not cover the pipe until you have turned the water on to make sure you are good to go. I know, any idiot knows better, but even us pros periodically overlook something really simple and obvious. If your Orbit is not working, there could be several possible causes. One last tip! To keep your sprinkler system working properly, keep the heads clean and free of debris. Sprinkler problems happen, but usually you can fix them yourself.Today's in-ground sprinklers are designed to be easy to repair and adjust. Go to one of the irrigation valves and turn the solenoid 1/4 to 1/2 a turn counter-clockwise. Maybe none of your heads are popping up, or maybe only one is not working correctly. One sprinkler zone not working Got a zone that is not turning on? If one or more stations do not turn on, it could be: Faulty solenoid. Why is My Orbit Not Working? All you need to do if figure out if it is the timer, wire, or valve at fault. Nevertheless, it is always better to seek professional help so that the same problem will not happen twice. First off, you will need a volt meter (get one cheap here). Not sure where to start to get the two sprinkler heads working. Sprinkler Pipe Glue. If the valve did not turn on any of the sprinklers, the water to the valves is still off. If you follow these repair tips and your sprinkler heads are still malfunctioning, it is time to consult a professional! One way to avoid sprinkler problems is to make sure your pipes are properly glued. In one zone I have six sprinkler heads. This is a common issue with sprinkler systems. The thin spray opening of a sprinkler head easily becomes clogged with dirt and debris. I bought the house a year ago so the sprinkler system is fairly new. “All it takes is one broken nipple on the sprinkler. Although the main sprinkler problem related to the pipe is an actual broker pipe, loose or poorly glues pipes can be a huge sprinkler problem. 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