What Should Homeowners Check Before Calling for Sprinkler Repair?

Before calling for sprinkler repair, homeowners should identify which zones are affected, note whether the controller is powered, look for visible leaks or broken heads, and record exactly what the system does when the problem occurs. These observations can shorten diagnostic time without requiring you to disassemble valves, open electrical equipment, or dig up the yard.

1. Determine whether the problem affects one zone or the whole system

This is one of the most useful clues. If one zone fails while the others operate normally, the problem may be localized to that valve, solenoid, station wire, lateral piping, or sprinkler heads. If every zone is affected, look toward shared components such as the controller, common wire, irrigation supply, master valve, or backflow/supply path.

If only one station is dead, see why one sprinkler zone won’t turn on.

2. Look at the controller display

Note whether the controller has power and whether it displays an error, rain delay, sensor status, or station fault. If the controller says a zone is running but no sprinklers operate, that does not prove the valve received the electrical command; it simply helps narrow the diagnosis.

For broader controller symptoms, read what causes a sprinkler controller to stop working.

3. Look for obvious water loss

Walk the affected area while the system is operating. Look for bubbling soil, an unusually wet patch, erosion, a broken head, a missing nozzle, or water pouring from a location where it should not. A significant leak can reduce pressure to the rest of the zone.

4. Compare sprinkler performance

Notice whether heads fail to rise at all, rise only partway, spray weakly, mist excessively, or leave one section of lawn dry. The pattern matters. One damaged head is different from an entire weak zone.

See why sprinkler pressure suddenly becomes low if multiple heads are weak.

5. Think about what changed recently

Recent fence installation, landscaping, aeration, drainage work, tree removal, utility work, driveway work, or planting can damage buried irrigation pipe and control wire. A storm or power outage can also be relevant when controller behavior changes suddenly.

6. Note whether water appears when the system is off

A head that drips briefly after watering may simply be draining water from a low point in the lateral line. Persistent flow, recurring puddles, or a zone that remains pressurized after it should shut off can indicate a different valve or supply problem.

Our guide to a sprinkler zone that keeps running explains the distinction.

7. Do not start replacing random parts

A dead zone can be caused by a controller output, wire, splice, common wire, solenoid, valve, water supply, or pressure issue. Replacing a valve or controller before isolating the failure can add cost without solving the problem.

Information that helps an irrigation technician

  • The controller brand and any visible error message.
  • The affected zone number, if known.
  • Whether other zones operate normally.
  • Whether the problem is constant or intermittent.
  • Where visible water or weak heads appear.
  • When the problem started and whether recent work occurred nearby.

What not to do before service

Avoid opening line-voltage electrical compartments, disassembling pressurized backflow components, using improvised electrical jumpers, or excavating blindly around buried utilities and irrigation wiring. Good observations are more useful than creating a second problem.

When professional troubleshooting makes sense

Professional diagnosis is especially useful for buried valves, broken field wiring, recurring leaks, multiple failed zones, controller faults, and low-pressure problems with no obvious source. Fort Mill Irrigation focuses on repair and maintenance of existing residential irrigation systems.

Depending on the symptom, related services include sprinkler valve repair, valve locating and wire tracing, sprinkler leak repair, and low-pressure troubleshooting.

Frequently asked questions

Should I reset my controller before calling?

Usually not unless you understand what the reset will erase. Preserving the existing programming and error state can provide useful diagnostic information.

Should I dig up a wet spot first?

Not necessarily. Water can travel underground, so the wettest point is not always directly above the failed fitting. Identifying the affected zone first can reduce unnecessary digging.

Should I shut the irrigation system off if water is running continuously?

If uncontrolled irrigation water is causing damage, stopping the irrigation water supply may be appropriate when you can clearly identify the correct irrigation shutoff. Do not manipulate unfamiliar plumbing or backflow components.

Need sprinkler repair in Fort Mill or help diagnosing an irrigation problem? Call or text Fort Mill Irrigation at (803) 710-8008.