Honeywell Exercise timer or schedule malfunction

Generator does not exercise at scheduled time

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Possible Causes

Incorrect date/time or schedule settings, disabled exercise mode, controller firmware issue, low battery preventing start.

How to Fix / Troubleshooting

Safety first: Ensure the generator is in AUTO mode and that no active alarms are present before adjusting settings.

Steps:

  • Check clock: Set the correct date and time on the Honeywell controller.
  • Verify exercise settings: Confirm that the exercise function is enabled and scheduled for the desired day and time.
  • Battery status: Ensure the battery is healthy and that no 'Low Battery' alarm is present.
  • Manual test: Run a manual test to confirm the unit can start and run. If a manual test works but the exercise function does not, the controller may need a firmware update or replacement.
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Repair Difficulty

Easy 2/5

Required Part

Generator Controller
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