Why won’t my sprinklers turn off? | San Antonio, Texas

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Phil Puccio

sprinkler system

Turning off your sprinkler system for the fall only to find that your system is still running can cause sudden problems. You might be thinking that something is wrong with the entire sprinkler system and you might be faced with an expensive repair! However, this cannot be the case.

Here at Mr. Plumber, we know all about sprinkler systems. Here are some reasons your sprinkler system might still be operating and some do-it-yourself solutions you can try.

Do Sure your system is off

Before making any assumptions, the first thing you should do is locate your sprinkler control panel and make sure the rotary switch is turned to the off position. If your sprinkler system is still running, it is likely a mechanical problem.

Sprinkler valve position

You have likely seen your sprinkler valve box or cover in the past while tending your yard. If you haven’t found the valve box, you can usually find it near the street or by your water meter.

Once you find it, you may find that the lid is covered in overgrown grass or dirt, making the lid difficult to remove. In this case, you may need a shovel to dig around the lid in order to properly remove it. Once uncovered, you should find a sprinkler valve. Depending on the size of your system, you can have more than one valve.

Check the sprinkler timer

The sprinkler timer can occasionally be turned off, causing your system to run even though it is turned off. To test this, disconnect one of the valve wires. If this turns off the sprinkler, something is wrong with the timer.

Shutting off the water supply

Before checking anything else, you must shut off the water to your sprinkler system for a proper and safe repair. Start by determining if your sprinkler valve is a gate valve or a ball valve.

A gate valve is in older sprinkler systems. You can turn it off by finding the faucet-like lever and turning it clockwise. These levers can be difficult to turn, so find a pair of gloves to ensure a good grip.

A ball valve is in newer sprinkler systems. It is turned off by turning the T-shaped handle clockwise.

Checking the solenoid valve

Find the solenoid valve on the outside of the valve and see if it is loose or open. If so, this may be the problem. Start by turning the solenoid back clockwise. If you find that the solenoid valve is damaged, it will need to be replaced. You can replace the solenoid valve yourself by purchasing a new one from a local hardware store.

With a new magnet in hand, take the two wires out of the broken magnet and unscrew it from the valve body. Screw in the new solenoid, reconnect the wires, and test your system.

Check the valve for dirt and damaged parts

Dirt can be one of the most common reasons your sprinkler won’t turn off. In this case, you need to follow the steps below.

  1. Unscrew the solenoid by turning it counterclockwise and remove the wires.
  2. Make sure that the piston in the valve can move freely and is clean.
  3. Loosen the hood screws and remove the membrane and spring.
  4. Clean these parts and make sure they are not damaged. If you find any damage to the membrane, it will need to be replaced. You can find a replacement membrane at a local hardware store.
  5. Remove any debris you might find in the valve body and inspect the seal seat for damage.
  6. Put the parts back in and test the system.

Contact Mr. Plumber

If you find that your system is still running or you don’t want to fix it yourself, it may be time to call the experts. Call Mr. Pumber today and we’ll fix it.

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Original Source: https://www.mrplumbersa.com/plumbing-blog/why-wont-my-sprinkler-system-turn-off/
Category – Plumbing

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