GE Unstable Voltage Regulation

Generator produces power but voltage is unstable or fluctuates

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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 AVR, Loose stator sensing wires, Intermittent load causing surges, Failing control board voltage circuit

How to Fix / Troubleshooting

Safety First: Turn OFF the generator breaker before connecting or disconnecting loads. Use a multimeter to monitor voltage.

  • 1. Test with no load: Run the generator with the main breaker OFF and monitor voltage. If stable, the issue may be with connected loads.
  • 2. Inspect sensing leads: Check all small-gauge wires from the alternator to the GE controller/AVR for tightness and damage.
  • 3. Apply loads gradually: Turn on circuits one at a time and watch for voltage swings when specific loads start. Problem loads (e.g., large motors) may require soft-start solutions.
  • 4. Replace AVR if necessary: If voltage is unstable even at no load with good wiring, replace the AVR with the correct GE part.
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Repair Difficulty

Medium 3/5

Required Part

Automatic Voltage Regulator
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