SDMO Nuisance Auto-Start / Cycling

SDMO generator frequently starts and stops for short periods even when load is low or absent.

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Possible Causes

Incorrect exercise timer settings, Unstable mains voltage detection thresholds, Faulty mains sensing circuit, Misconfigured remote start input

How to Fix / Troubleshooting

Safety first: Ensure that automatic starts are disabled while adjusting controller settings.

  • Review exercise schedule: Check the SDMO controller's exercise or test timer. Adjust frequency and duration to appropriate values.
  • Check remote start input: Inspect wiring to any remote start contacts. A chattering or intermittent contact can cause repeated starts.
  • Verify mains sensing thresholds: Ensure that undervoltage/overvoltage limits are not set too tight, causing frequent perceived mains failures.
  • Monitor mains stability: Use a power quality meter to confirm that mains supply is stable. If not, consult the utility provider.
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Repair Difficulty

Easy 2/5

Required Part

Remote Start Input Module
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