Automatic exercise (weekly self‑test) does not occur at the scheduled time.

Safety first: Ensure the generator is in AUTO mode and that utility power is present.

• Verify settings: Enter the controller menu and confirm the current time, date, and exercise schedule are set correctly.
• Enable exercise: Make sure the exercise function is turned ON and that the duration is set per DuroStar recommendations.
• Force a manual exercise: Use the controller to start a test run and confirm the generator operates normally.
• Reset controller: If scheduling still fails, perform a controller reset per the manual. Persistent issues may require control board replacement.