Winco Short Cycling / Nuisance Start-Stop

Generator starts and stops repeatedly in short cycles without transferring load.

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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

Incorrect utility sensing thresholds, Loose utility sense wiring, Faulty controller utility sense input, Unstable utility voltage

How to Fix / Troubleshooting

Safety first: Disable AUTO to stop cycling while troubleshooting.

  • Check utility voltage: Have utility voltage measured at the transfer switch. Large fluctuations may cause the controller to think power is failing.
  • Inspect sense wiring: Verify the utility sense leads from the transfer switch to the Winco controller are tight and correctly landed.
  • Controller settings: Confirm utility dropout and pickup voltage settings in the controller match Winco specifications.

If cycling continues with stable utility, controller or sense circuit service is required.

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Repair Difficulty

Hard 4/5

Required Part

Generator Controller
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