What causes a sprinkler controller to stop working?

Common Reasons

A sprinkler controller can stop working because of a power issue, a tripped breaker, a damaged transformer, loose wiring, or moisture inside the control box. In some cases, the controller is still powered but the settings have been lost, the display is blank, or certain zones are no longer responding.

What to Check

• Verify the outlet has power and the breaker has not tripped.
• Look for a blinking error code or blank display.
• Check for loose wire connections at the controller.
• Inspect for corrosion, water damage, or burned components.
• Make sure the program settings and run times are still saved.

If the controller is unresponsive or only some zones work, the problem may be inside the unit or in the field wiring. Dallas Landscape & Irrigation can diagnose sprinkler controller issues, repair damaged components when possible, and replace failing units when needed. For fast help, request an estimate.