When spring shows up in Raleigh, one of the first things we do is turn irrigation systems back on, just like any experienced expert sprinkler installation company would during seasonal startup after months of cold weather, pipes, valves, and sprinkler heads can act up. We see it every year. A system that worked fine in the fall suddenly has leaks, dry spots, or low pressure.
We were just out in Cary last week, turning on a system we installed a few years ago. The homeowner thought everything would run smoothly. Instead, one zone would not come on, while another would spray water like a fountain. This is normal after winter. The good thing is that most problems can be fixed fast when caught early.
Let’s talk about the most common sprinkler startup issues and what they mean for your system.
Why Is My Sprinkler System Not Turning On?
Power or Controller Issues
Sometimes the system does not start at all. The controller may have lost power during winter, or settings may have reset.
Dead controller battery: The backup battery may be drained, which can erase your schedule and stop the system from running.
Tripped breaker: A power surge or outage may have flipped the breaker, cutting power to the controller.
Wiring Problems
Cold weather can make wires brittle or loose.
Loose wire connections: Wires inside the controller or at the valve may have come loose, stopping signals from reaching your system.
Why Are There Leaks When I Turn It On?
Cracked Pipes
A winter freeze can cause pipes underground to crack.
Frozen pipe damage: Water left in the pipes can freeze and expand, which can break the pipe and cause leaks when water flows again.
We just repaired a system in Apex where a small crack turned into a big muddy spot in the yard within minutes of startup.
Broken Sprinkler Heads
Heads can get damaged by cold, lawn mowers, or foot traffic.
Split sprinkler head: A cracked head will spray water unevenly or shoot water straight up like a geyser.
Why Is My Water Pressure Too Low or Too High?
Pressure Problems
Pressure issues are very common after winter.
Low-pressure zones: This can mean a leak somewhere in the line or a valve that is not opening all the way.
High-pressure spray: This can cause misting, where water turns into a fine spray and blows away instead of soaking the soil.
Why Are Some Areas Not Getting Water?
Blocked or Misaligned Heads
Not all problems are big. Some are simple.
Clogged nozzle: Dirt or debris can block the nozzle, stopping water from coming out properly.
Tilted sprinkler head: A head may shift during winter, causing it to spray in the wrong direction.
Zone Issues
Each zone controls a part of your system.
Zone not activating: This may be due to a valve problem or wiring issue, leaving parts of your lawn dry.
Why Do My Sprinkler Valves Keep Running?
Valve Malfunctions
Valves control the flow of water to each zone.
Stuck valve: Dirt or wear can keep a valve from closing, so water keeps running even when the system is off.
Worn diaphragm: Inside the valve is a rubber part that can wear out over time, causing leaks or constant flow.
Why Does My System Make Strange Noises?
Air in the Lines
When the system starts up, trapped air can cause noise.
Banging sound: This is called water hammer, and it happens when air pockets move through the pipes.
Whistling noise: This can point to pressure problems or partially closed valves.
Frequently Asked Questions About Sprinkler
Can I turn my sprinkler system on by myself?
Yes. You can turn it on, but small issues may go unnoticed. A quick check by a pro can help catch hidden problems early.
Is a small leak a big deal?
Yes. Even a small leak can waste a lot of water over time. It can also lead to higher water bills and damage to your lawn.
Should I run all zones during startup?
Yes. Running each zone helps you see if anything is broken or not working right. It is the best way to spot problems early.
Ready to Start Your System the Right Way?
Spring startup is one of the most important steps for a healthy irrigation system. Catching small problems now can save money, water, and stress later in the season.
At Water Works Unlimited, we handle sprinkler startups across Raleigh, Cary, Apex, and nearby areas every year. We just worked on several systems this week alone, fixing leaks, adjusting heads, and making sure everything runs smoothly. Sometimes, the real issue goes back to how the system was installed, like trenches not being set right or pipes not placed properly, which can lead to leaks or system problems later on.
If your system is acting up or you want it checked before problems show up, give us a call at (919) 570-7808. Water Works Unlimited is here to help keep your irrigation system running the way it should all season long.
