The controller identified high voltage on the Pump/Master valve.
What might happen as a result of the issue?
All watering cycles will be skipped until the problem is fixed.
The problem may be the result of a defective master valve solenoid, pump start relay, or field wiring.
What to do...Steps for a Solution
Be sure to separate and insulate all conductors carefully taking care not to damage wire insulation during installation. An electrical “short” (contact) between the valve wires and another source of power can damage the controller and create a fire hazard.