You do not need to diagnose the system yourself. A clear description of what you see can make the first conversation more useful and help keep the visit focused.

Record the symptom, not a guess

Note which zone is affected, whether water appears when the controller is off, how long the issue has been present, and what changed before it began. A short video of a running zone can show the spray pattern or sound.

Photograph the controller display

A photo can preserve an error message, controller model, schedule, and wiring labels before anyone changes settings. Avoid changing multiple settings at once because it can make the original fault harder to understand.

Point out site changes

Mention recent landscaping, fence or patio work, vehicle traffic, utility repairs, tree roots, or a freeze. These details can help locate a broken head, pipe, or wire.

Ask for a clear explanation

Before work begins, ask what was tested, what the diagnosis shows, which work is optional, and what the estimate includes. A repair quote should identify assumptions and any conditions that could change the scope.