One zone dead while the others run is the classic “is it the clock or the valve?” call. In Texas the answer is usually in the box: a corroded splice sitting in water, a solenoid that reads open, or a field wire cut at a bed edge. Replacing the controller first is the expensive coin-flip.
This guide is written for Texas systems — piney-woods sandy loam over clay in The Woodlands, freeze risk in McKinney, watering rules from The Woodlands Water / MUDs. It is not a national blog with the city name swapped in. If the hardware is already failing, skip to timer & controller repairs or call 888-427-5022.
What a sprinkler zone that will not turn on actually looks like on a Texas lawn
Station clicks at the controller and nothing happens. Neighboring zones are fine. Sometimes the valve hums and still will not open. Sometimes there is no voltage at the solenoid at all.
In The Woodlands the same symptom often traces to low-volume retrofits under trees. In McKinney we see more freeze and heave. In Cedar Park (City of Cedar Park) the program may be legal but the heads are wrong. Do not assume the YouTube fix matches The Woodlands Water / MUDs pressure.
Diagnose before you buy parts
Order of operations matters. Controller and rain sensor first, then the valve box, then heads with water on, then a shovel. Skipping steps is how people replace nozzles when the solenoid is open, or trench for a “root problem” when station 4 is dead at the clock.
- Run the station from the controller’s manual menu, not by hoping the program will do it tonight.
- Confirm the rain sensor and seasonal adjust are not at zero. It sounds basic because it is.
- Open the valve box, lift the solenoid, and test ohms. An open coil is a solenoid, not a clock.
- Check voltage at the solenoid while the station is on. No voltage means wire or controller output.
- Look for a nick in the field wire at the last place someone edged or dug.
Keep a notepad of zone numbers. The FAQ covers the phone questions we ask so the truck shows up with the right fittings.
Parts that actually last in this climate
24V solenoids are cheap compared with a new Hunter or Rain Bird panel. Waterproof wire nuts belong in every box; the original dry nuts fail after one season in a wet box. Label the wires when you have the box open — future you will not remember which pink is zone four.
We use matched-precipitation nozzles when we change a head, and we flush grit after a pipe cut so the next screen does not pack. Brand-specific notes live in the blog as well — start with Sprinkler Zone Won’t Shut Off, Low Sprinkler Water Pressure, Sprinkler Heads Misting.
What it costs in Texas (ranges, not bait)
A solenoid and splice is a short visit. Tracing a cut wire under a sidewalk is not. A controller replacement is only the right ticket after the field tests clean.
A written quote before work is the rule. See Timer & Controller Repairs for what a typical visit includes, and the full service list if more than one system is involved.
DIY vs calling a licensed irrigator
You can run a manual station and look at a rain sensor. Measuring ohms on a solenoid is reasonable if you have a meter. Tracing buried wire under oak roots in The Woodlands is how people cut the good wire.
Texas licenses landscape irrigators for a reason: backflow, buried electric, and municipal rules. If you are in The Woodlands, McKinney, or Cedar Park, start on the city page — The Woodlands, McKinney, Cedar Park — then book.
Mistakes that turn a one-hour job into a weekend
- Buying a new Wi-Fi controller because one station is dead.
- Leaving splices above water with indoor wire nuts.
- Assuming “it worked last year” means the program still has that station enabled.
How this ties to other repairs
If the valve box is a pond, fix the weep first or the new solenoid will live in soup. Pair with valve repair and leak articles when the box refills with clear water while the system is idle.
Coverage problems after a “fix” usually mean the program was never updated. Pair mechanical work with controller programming and, on clay, cycle-and-soak — not a longer single runtime.
What a good visit looks like on our trucks
We do not start with a parts cannon. Controller and sensor, then the box, then water-on, then dirt if the lateral is the problem. That order is how you avoid replacing a clock for a cut wire, or trenching a puddle that is eight feet from the break. If you want the short phone version, the FAQ is enough. If you want the long version, you are already in it.
Texas jobs change by metro even when the part number does not. The Woodlands clay hides water. McKinney actually freezes brass. Cedar Park bills you through a different utility window. A national blog that only swaps the city name is how Google ends up indexing one page. We write the local constraint in the article because it changes the repair.
Bring zone numbers, whether the problem is new or slow, whether anyone dug recently, and whether the meter moves when everything should be off. Those four answers route the call — leak truck vs simple head work vs controller power path. Book on contact or call 888-427-5022.
Frequently asked
Can I jump the solenoid to test?
Carefully, with the right voltage. If it opens by jumper and not from the clock, you have a wire or output problem.
Two zones died at once.
Look at common wire. One common feeds many valves.
Need it fixed, not diagnosed over email? Call 888-427-5022 or use the contact page. Same-day windows are for active leaks and stuck-on valves. Everything else we schedule on emergency vs standard priority.
Texas context we will not skip
Gulf clay, Blackland prairie, and Edwards rock do not share a repair script. A wet spot in Houston is not a freeze crack in Dallas, and a SAWS stage day is not a MUD watering window in Katy. We write those constraints because they change the parts on the truck and the program we leave on the clock.
If this article is about a part, still run isolation before you buy a case of that part. If it is about a city, still open the valve box before you trench the first damp patch. If it is about a clock, still measure the solenoid. That order is the whole business.
Call 888-427-5022. Use the contact page if you need a gate code on the ticket. Hub pages: services, service areas, blog.