E15
Andersen Firmware Corruption or Invalid Configuration

Charger displays E15; app indicates 'Firmware Error / Configuration Corrupt'.

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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

Interrupted firmware update via Andersen app, Power loss during configuration write, Faulty flash memory on main control PCB, Incompatible firmware version loaded

How to Fix / Troubleshooting

Safety first: Do not attempt to repeatedly power cycle during a firmware update; wait until the unit is clearly idle.

User steps:

  • Power cycle the charger once (OFF 60 seconds, then ON).
  • Open the Andersen app and check for a pending firmware update. If prompted, follow the official update procedure with a stable internet connection and do not interrupt power.
  • If the app offers a factory reset or configuration reset, perform it and re‑commission the charger following the installation guide.

If E15 remains:

  • The firmware image or flash memory may be damaged.
  • Contact Andersen support; they may provide a recovery image or require replacement of the main control PCB.
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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB (Firmware Storage)
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