Pulsar Nuisance Cycling / Short Cycling

Generator starts and stops repeatedly in short cycles when utility power is unstable.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Improper utility sensing thresholds, Loose utility sense wiring, Faulty ATS sensing circuit, Control board misconfiguration

How to Fix / Troubleshooting

Safety first: Frequent starts can wear the engine. Place the generator in OFF if cycling is severe until the issue is resolved.

  • Inspect utility sense wires: Ensure the low-voltage sensing leads from the ATS or service entrance to the Pulsar controller are secure.
  • Check utility voltage: Have a qualified electrician verify that utility voltage is within normal range and not rapidly fluctuating.
  • Review controller settings: On advanced Pulsar models, confirm that start/stop voltage and time delays are set per the manual.

If cycling continues with stable utility, the sensing circuit in the ATS or controller may be faulty and require replacement.

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Repair Difficulty

Hard 4/5

Required Part

Pulsar Utility Sensing Module
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