My Orbit controller is plugged into a Ground Fault Interrupt outlet in my garage. Almost every time my sprinklers run, the GFI trips the breaker during Zone 3, stopping the sprinkler cycle. The solenoid in Zone 3 was replaced, the zones work perfectly with manual operation, but the breaker tripping problem persists. Do I need a sprinkler technician or an electrician? What could be causing this?
