Multiquip Nuisance Start/Stop Cycling

Generator starts and stops repeatedly in short cycles without load changes

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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

Unstable utility voltage causing ATS to transfer back and forth, Incorrect voltage/frequency thresholds, Faulty utility sensing in ATS, Loose sensing wiring

How to Fix / Troubleshooting

Safety first: Cycling can stress equipment. Place the generator in OFF or MANUAL (no AUTO) until the cause is found.

  • Step 1 – Monitor utility power: Use a meter or power quality recorder to check for voltage or frequency fluctuations on the utility side.
  • Step 2 – Check ATS sensing settings: Verify that the ATS pickup and dropout settings for utility and generator are per Multiquip and utility recommendations.
  • Step 3 – Inspect sensing wiring: Tighten all voltage sensing connections in the ATS and generator controller.
  • Step 4 – Adjust or replace ATS controller: If settings are correct but cycling persists, the ATS control board may be faulty and should be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Automatic Transfer Switch Control Board
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