Gillette Unstable Voltage Regulation

Generator is running but lights flicker and voltage fluctuates under varying loads.

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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

Weak or failing AVR, Loose voltage sensing connections, Rapidly changing loads, Worn engine governor components

How to Fix / Troubleshooting

Safety first: Use caution when working around live electrical equipment. Isolate non-critical loads if possible.

Steps:

  • Check connections: Tighten all control and sensing wires at the AVR and alternator terminal strip in the Gillette generator.
  • Observe load behavior: Identify large motor loads or equipment cycling on/off rapidly. Consider staggering their operation.
  • Inspect AVR: Look for signs of overheating or damage. If voltage swings are large and not load-related, replace the AVR.
  • Governor check: If engine speed is hunting, inspect and service the governor system.
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Repair Difficulty

Hard 4/5

Required Part

Automatic Voltage Regulator
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