Amperfied Cooling Fan Overrun / Noise

Charger’s internal fan (if equipped) runs very loudly or continuously, even at low load or when idle.

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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

Clogged air vents causing higher internal temperature, Failing fan bearings, Temperature sensor misreading, Firmware threshold set too low

How to Fix / Troubleshooting

Safety: Fan noise itself is not dangerous but may indicate thermal issues.

  • Clean vents: With power off, gently remove dust and debris from ventilation slots using a dry cloth or low‑pressure air (do not blow moisture into the unit).
  • Check ambient temperature: Ensure the charger is not installed near heat sources or in direct sunlight.
  • Firmware check: Update firmware if a newer version improves fan control behavior.
  • Technician service: If noise persists, a technician should inspect and, if necessary, replace the internal fan and verify temperature sensor readings.
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Repair Difficulty

Medium 3/5

Required Part

Internal Cooling Fan / Temperature Sensor
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