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critical Orbit

Error Code NO AC

Power failure — display shows 'NO AC' indicating loss of AC power. No watering will occur.

? What Causes This

AC power loss or loss of connection to power source.

How to Fix It

  1. Check that the transformer is plugged into a working outlet.
  2. Verify AC power is available at the installation site.
  3. Restore power to resume operation.

Source: page 14 of the official manual

From the manual

Manual page 14 — Orbit error NO AC

This error code appears in:

Orbit 27894 Sprinkler Timer