Spring Hill Sprinkler Repair A sprinkler zone won't turn on: the fix and the cost
A single zone that will not turn on, while every other zone runs normally, points at something specific to that zone rather than a system-wide failure. The controller and main power are clearly working since other zones prove it, which narrows the search to the valve, its wiring, or the water supply reaching that one valve.
Check this first (five minutes)
- Confirm it really is just the one zone. Run through every zone from the controller manually and note which ones actually respond. This matters for the technician and also rules out a broader controller or power problem.
- Listen at the valve box during the scheduled run time. A faint click or hum when the zone should start means the solenoid is getting a signal. Silence suggests either no signal is reaching the valve (wiring) or no power is reaching the controller for that station.
- Open the valve box if you can access it safely. Look for obviously corroded wire connections, a valve that looks physically stuck, or standing water that suggests a different problem entirely (see the valve box full of water page if that is what you find instead).
- Check whether this zone shares a valve manifold with others. If several valves sit in the same box and only one zone is dead, that usually points at the individual valve or solenoid rather than anything shared.
What is usually wrong
| What you notice | Likely cause | Fix and cost |
|---|---|---|
| No sound at valve box when zone should run | Wiring break between controller and valve, or dead solenoid | $150-$350 |
| Click or hum at valve box but no water flows | Valve stuck closed, debris in the seat | $150-$350 |
| Valve visibly cracked or corroded | Valve body failure | $200-$450 replacement |
| Every zone dead, not just one | Controller power issue (outlet, breaker, GFCI) or main supply | Diagnose at the service call, $75-$150 |
| Zone weak but not fully dead | Partial blockage or a failing (not fully dead) valve | $150-$350 |
These sit inside the valve repair range on the pricing page, on top of the $75 to $150 service call.
Why solenoids and valves are the first suspects
A residential irrigation valve is a solenoid-operated diaphragm valve: the controller sends a low-voltage signal, the solenoid lifts a plunger, and water pressure does the rest to open the diaphragm. Any one of those steps failing produces the same symptom from the driveway: nothing happens. Hunter’s own troubleshooting for its Pro-C and X-Core controllers specifically identifies a solenoid short or fault as the most common single cause of one station failing while the rest of the system works, and gives a normal healthy-solenoid resistance reading of 20 to 60 ohms on a multimeter, with anything far outside that range calling for replacement. See our Hunter brand page for more detail, and the Irrigation Valve Repair service page for the full repair scope.
Where we work
On site across Spring Hill, Brooksville, Weeki Wachee, Hudson, Masaryktown, Ridge Manor, Timber Pines, and Hernando Beach.
Frequently Asked Questions
One zone is completely dead but the rest work fine. What's wrong?
Almost always something isolated to that zone: a failed solenoid, a stuck valve, or a break in the wire between the controller and that specific valve. It is rarely the controller itself, since the other zones prove the controller and main power are working.
Every zone is dead at once. Is that different?
Yes, and it points somewhere else entirely: check the controller's power (an outlet, breaker, or GFCI) and the main water supply to the system before assuming every valve failed simultaneously, which would be unusual.
What does it cost to fix a dead zone?
$150 to $350 in most cases, covering diagnosis at the valve box and the repair itself, whether that turns out to be a solenoid, a cleaned or replaced valve, or a wiring fix.
Can I test it myself before calling?
You can run the zone manually from the controller and listen at the valve box for a faint click or hum when it should activate. No sound at all suggests the valve is not getting a signal or power; a click with no water suggests the valve itself is stuck.