
How to Replace a Solenoid on a Sprinkler
- 1.. Turn off your water supply to the sprinkler system.
- 2.. Turn off your irrigation system at the control panel.
- 3.. Slide a soil probe into the ground to locate the failed solenoid and valve assembly. You should hear a hollow sound...
- 4.. Scoop the soil off of the valve box using a shovel. Lift the lid from the valve box and...
Full Answer
How much does it cost to replace a solenoid?
You can expect an expense of anywhere between $125 to $450. Keep in mind that this is for a single solenoid replacement. The cost will bump up depending on the solenoids that need replacement.
How do you install solenoid on sprinkler system?
Instruction to Install a Solenoid on a Hunter Sprinkler System
- Disconnect the control box from the power source.
- Remove the wire nuts attached to the existing solenoid wires and disconnect the two wires. ...
- Unscrew the existing solenoid in a counterclockwise direction to remove it from the valve.
- Screw the new solenoid into the valve in a clockwise direction. ...
How to replace a sprinkler system valve and solenoid?
- Shut off the controller and turn off the water supply to the sprinkler system.
- Disconnect and remove the solenoid.
- Remove the bonnet screws that secure the cap on the zone valve. Lift off the cap to expose the spring and rubber diaphragm inside. ...
- Remove and inspect the rubber diaphragm. ...
- Reassemble the valve, making sure to reinsert the spring. ...
How to replace a valve solenoid?
Variable Valve Timing Solenoid Replacement Process
- Opening the Hood and Engine Cover. Start by raising the hood and keeping it secured so that it stays up. ...
- Disconnecting the Battery. Disconnect the battery carefully by loosening both the terminals. ...
- Locating the VVT Solenoid. ...
- Locating Mounting Bolts and Removing. ...
- Disconnecting and Removing the Solenoid. ...
- Inspecting the VVT Solenoid. ...

What is a solenoid in a sprinkler system?
The solenoid is what controls the water pressure. It receives an electric current from the controller to determine what adjustments need to be made. It uses a plunger to adjust the valve, and there are a few more moving parts in the mix. All of this is what allows an automated sprinkler system to run things for you and provide that great convenience. But when the solenoid is bad, you can get some weird sprinkler problems.
What to do if you have a solenoid problem?
Knowing more about the solenoid can help you with expectations and head off some frustration before it mounts. When you have a solenoid problem, know that Andy’s Sprinkler, Drainage and Lighting is here to help. Even if your problem isn’t with a solenoid, you can give us a call.
Why does my sprinkler keep running?
A problem with the plunger can prevent the solenoid from closing the valve when it’s time. That means your sprinklers will keep running after they’re supposed to stop. If you run into this problem, the first step is to turn off the water. If you can’t get it off at a local source, you can shut it off at the main.
How to diagnose a mechanical solenoid?
If the problem isn’t electrical, it’s mechanical. The best way for us to rapidly diagnose mechanical issues in the solenoid is to take a good look at the valve. Sometimes the problem is apparent, and we can get straight to it. In other cases, we might need to disassemble, clean, and inspect the inner components of the solenoid. This will give us a close look at everything and help us find the faulty part.
Can a solenoid cause low water pressure?
Low or Uneven Water Pressure. The solenoid controls the water pressure. Knowing that, it’s not surprising that a bad solenoid can lead to water pressure issues. If your system isn’t delivering water to every corner of the lawn like it once did, the solenoid is one of the most likely culprits. This doesn’t constitute an emergency, ...
Do sprinklers work?
Sprinkler systems are great when they work. They make lawn care so much easier, and they’re likely to leave you with a much greener, healthier lawn. But when they stop working, they can be a source of unlimited frustration. The best way to prevent that frustration is to know how to spot signs of trouble early.
Can a sprinkler system leak?
There are many points in a sprinkler system that can leak. No matter the cause, leaks should never be ignored. They can run up a monstrous water bill. They can also cause additional damage. So, if you see a leak, get it fixed as soon as possible.
How to check solenoid on sprinkler head?
They can check on the solenoid by opening up the sprinkler valve. If you try to do this yourself, turn off the power and the water to the sprinkler head before you start. When you get to the valve, you can just unscrew it counterclockwise.
Why does a sprinkler valve go bad?
So, the sprinkler valve solenoid is a critical part of the sprinkler system. Unfortunately, they go bad frequently, often due to debris. Here’s how to tell if a sprinkler valve solenoid is bad and what to do about it if it is.
How to tell if sprinkler valve is bad?
Signs that Your Sprinkler Valve Solenoid is Bad. There are a few common problems that happen is your sprinkler valve solenoid has broken, including: Never-ending water: The valve solenoid may get stuck open, allowing all or a trickle of water through at all times. This will keep the sprinkler running even when the system tries to turn it off.
Why is my lawn getting brown spots?
With low pressure from the valve solenoid, you’ll find that brown spots will develop on your lawn, as the water won’t get as far as it is supposed to, and the gaps in coverage will make your lawn uneven.
What happens if you get the wrong signal on a sprinkler?
If it’s getting the wrong signal, then the circuitry needs to be replaced. We don’t suggest that you try to do electrical work yourself, as it can be dangerous, especially on sprinkler heads as there is water right nearby.
Can you flush a sprinkler head?
Often times, a bit of sand or debris will get stuck inside the ports, or the small holes, inside the valve. Simply flushing them out can solve quite a few problems with sprinkler heads. Still, other problems may be going on with your valve or solenoid. The fastest way to get to the bottom of it is to have a professional troubleshoot your sprinkler ...
Can a broken solenoid cause water leaks?
Water leaks: High pressure from a broken solenoid can put a lot of stress on your sprinkler system and burst small or large leaks throughout it.
