ABB Unexpected Reset / Power Interruption

Charger randomly reboots during charging or idle, with all lights cycling off and on.

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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

Loose internal power connections, Failing auxiliary power supply, Firmware crash causing watchdog reset, Overheating of control board

How to Fix / Troubleshooting

Note: Frequent reboots can interrupt charging and indicate developing hardware issues.

  • Check supply stability: Have an electrician verify that the supply voltage is stable and not dropping during high household loads.
  • Tighten terminals: With power off, tighten all input and internal power connections.
  • Monitor temperature: Ensure the charger is not overheating; improve ventilation if necessary.
  • Update firmware: Install the latest firmware to address potential software-related resets.
  • Board replacement: If reboots persist, the auxiliary power supply or microcontroller on the control board may be failing and the board should be replaced.
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Repair Difficulty

Medium 3/5

Required Part

Control Board / Auxiliary Power Supply
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