Wallbox Unexpected Reset / Power Instability

Wallbox charger randomly reboots during charging sessions without showing a specific error code.

Advertisements

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.

Advertisements

Possible Causes

Internal PSU marginal under load, Firmware crash, Electrical noise on supply, Loose low‑voltage connector

How to Fix / Troubleshooting

Safety first: If reboots are accompanied by burning smell or excessive heat, stop using the charger and turn off power.

  • Check supply stability: Have an electrician verify that the mains voltage is stable and within spec during charging.
  • Firmware update: Ensure the charger is running the latest firmware, as some reboot issues are software‑related.
  • Internal connector check (technician): With power off, open the unit and reseat all low‑voltage connectors between the PSU section, main board, and communication modules.
  • Board replacement: If reboots persist and supply is stable, the main control board’s PSU or processor may be failing and should be replaced.

Frequent reboots can interrupt charging and may indicate impending hardware failure; schedule service promptly.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Main Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements