Sprinkler System Won't Turn On: Troubleshooting And Solutions

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Sprinklers Won't Turn On What to Do? [Upd. 2021]


Having a well-maintained sprinkler system is crucial for keeping your lawn healthy and vibrant. However, it can be frustrating when your sprinkler system refuses to turn on, especially during the hot summer months. In this article, we will address common issues that may prevent your sprinkler system from turning on and provide troubleshooting tips and solutions.


1. Why is my sprinkler system not turning on?

There can be several reasons why your sprinkler system won’t turn on. It could be due to a faulty controller, a blown fuse, a broken wire, a malfunctioning solenoid valve, low water pressure, or a defective sprinkler head. It’s important to identify the specific issue to determine the appropriate solution.

2. How can I check if the controller is the problem?

Start by checking the power source. Ensure that the controller is receiving power and that the display is functioning properly. If the display is blank or unresponsive, check the circuit breaker and replace any blown fuses. If the controller still doesn’t work, it may need to be replaced.

3. What should I do if there is no power to the controller?

If there is no power to the controller, check the power source. Make sure the outlet is working and that the power cord is securely plugged in. If the outlet and power cord are fine, you may need to call an electrician to inspect the wiring and connections.

4. How can I determine if there is a broken wire?

A broken wire can disrupt the flow of electricity to the sprinkler system. Inspect the wires and connections for any visible damage or signs of wear. Use a multimeter to test the continuity of the wires. If a wire is broken or damaged, it will need to be repaired or replaced.

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5. How do I check the solenoid valve?

The solenoid valve controls the flow of water to the sprinkler heads. Inspect the valve for any signs of damage or debris. Use a multimeter to test the solenoid’s resistance. If the solenoid is faulty, it will need to be replaced. Cleaning the valve and removing any obstructions may also solve the issue.

6. What should I do if the water pressure is low?

Low water pressure can prevent the sprinkler system from turning on or operating efficiently. Check the water pressure in your home by using a pressure gauge. If the pressure is below the recommended range, you may need to consult a plumber to address any issues with the water supply.

7. How do I troubleshoot a defective sprinkler head?

Inspect the sprinkler heads for any damage, clogs, or misalignment. Clean or replace any clogged or damaged sprinkler heads. Adjust the spray pattern and direction if necessary. If the problem persists, there may be an issue with the water distribution system that requires professional assistance.


When your sprinkler system fails to turn on, it’s important to identify the underlying cause and address it promptly. By following the troubleshooting tips mentioned above, you can save time and money by resolving the issue yourself or knowing when to seek professional help. Remember to regularly maintain your sprinkler system to prevent future problems and ensure a lush, green lawn.