1) A zone won’t turn on (or won’t turn off)
If a zone doesn’t turn on, common culprits include a failed solenoid, a wiring fault, a clogged valve, or a controller issue. If it won’t turn off, it’s often debris in the valve (or a worn diaphragm) holding it open.
2) Low pressure or weak spray patterns
Low pressure can be caused by a leak downstream, a partially closed valve, a damaged lateral line, or too many heads on one zone. Sometimes it’s simply a nozzle mismatch—one “wrong” nozzle can starve the rest of the zone.
3) Water bubbling up (a classic broken pipe or fitting)
If you see a soggy spot or a bubbling “mini spring” while a zone runs, that’s usually a cracked pipe, a split fitting, or a broken riser. These waste a surprising amount of water and reduce coverage to the rest of the zone.
4) Heads that don’t pop up (or stay stuck up)
Pop-up heads can stick due to dirt intrusion, worn seals, or pressure issues. Heads that stay stuck up can become mower targets—and repeated impacts can damage the body, nozzle, or swing joints.
5) Overspray onto sidewalks/driveways
This is often a simple adjustment, but it’s also a sign your system may need a coverage audit. Water that lands on hardscapes doesn’t help the lawn—yet you’re paying for it.