Why do only some of my sprinklers work?
William Smith
Published May 31, 2026
Why do only some of my sprinklers work?
A lawn sprinkler system is usually divided into two or more zones that water independently of each other. Each zone consists of several sprinkler heads controlled by a valve that is electrically activated. If a single zone is not working, the problem is usually an electrical issue or a defective controller or solenoid.
What causes a sprinkler system to skip an inlet?
If backflow enters the valve, it will cause the disc to skip as it is pushed against the backflow. The result: water will come in through the inlet during start up. Install a check valve on any outlet that has zone piping higher than the valve.
What happens if a sprinkler valve goes bad?
What happens if a sprinkler solenoid goes bad? A bad sprinkler valve solenoid can cause water to leak out of sprinkler heads if stuck open or obstruct water to sprinkler heads if stuck closed. It will be quite difficult to properly care for your sod grass, so you should have the solenoid repaired as soon as possible.
How to check if your sprinkler system is working?
First, verify that there is water coming to the zone’s valve. Check that the water is on at the meter and at the backflow control valve if you have one (its in a green box). Once you verify that the sprinkler system is getting water pressure, you should then find the valve that controls the particular zone in question.
Can a sprinkler system be unscrewed and replaced?
One positive aspect of sprinkler problems related to the sprinkler valves is that most valves and solenoid parts can easily be unscrewed and replaced without having to buy a completely new unit.
If backflow enters the valve, it will cause the disc to skip as it is pushed against the backflow. The result: water will come in through the inlet during start up. Install a check valve on any outlet that has zone piping higher than the valve.
First, verify that there is water coming to the zone’s valve. Check that the water is on at the meter and at the backflow control valve if you have one (its in a green box). Once you verify that the sprinkler system is getting water pressure, you should then find the valve that controls the particular zone in question.
What happens if a sprinkler solenoid goes bad? A bad sprinkler valve solenoid can cause water to leak out of sprinkler heads if stuck open or obstruct water to sprinkler heads if stuck closed. It will be quite difficult to properly care for your sod grass, so you should have the solenoid repaired as soon as possible.
One positive aspect of sprinkler problems related to the sprinkler valves is that most valves and solenoid parts can easily be unscrewed and replaced without having to buy a completely new unit.