A running display only shows that the controller started a schedule. If every zone is dry, check the water supply, master valve, pump relay, rain delay, and common wire. If one zone is dry, test that station's wire, solenoid, and valve.
Match the pattern before opening anything
| Possible cause | Best clue | First check |
|---|---|---|
| Water supply closed | No zone produces water | Verify known irrigation shutoffs are open |
| Sensor or rain delay | Display shows sensor/delay status | Review controller status and manual |
| Broken common wire | Several or all valves are silent | Inspect controller common terminal and splices |
| Single valve fault | Only one station is dry | Test that valve manually |
Check these in order
- 01
Count the failed zones
Run two stations manually. One failed station indicates a local circuit. Every failed station indicates a shared supply, common wire, master valve, pump, or controller issue.
- 02
Check controller status
Look for rain delay, sensor-active, seasonal-off, or an error symbol. Use the exact model manual because bypass controls differ.
- 03
Listen for valve activation
A click without water suggests a stuck valve, closed flow control, or supply issue. Silence suggests the controller output, field wiring, splice, or solenoid.
- 04
Separate electrical from hydraulic
If the valve operates manually, focus on the electrical control path. If it does not, focus on the water path and valve internals.
- The controller has exposed damaged wiring or repeatedly trips power.
- A master valve or pump relay is involved.
- The common wire appears broken underground.
Sources and review notes
General maintenance logic is checked against EPA WaterSense outdoor irrigation guidance. Product controls and disassembly steps vary by model; use the current manufacturer manual for your exact valve, controller, or sprinkler head.
Published and last reviewed: August 26, 2026