E18
Hager
Firmware Corruption / Boot Failure
Hager EV charger displays E18; app may show ‘firmware error’, ‘software fault’, or ‘bootloader error’. Charger may be stuck or reboot repeatedly.
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
Interrupted firmware update, Corrupted flash memory on main board, Incompatible firmware version installed, Power loss during software upgrade
How to Fix / Troubleshooting
Safety first: Do not repeatedly power‑cycle during an update unless instructed by Hager support.
Steps to try:
- Wait and observe: If the error appeared during an update, allow at least 10–15 minutes for the process to complete before intervening.
- Power-cycle once: Turn OFF the charger’s breaker for 2 minutes, then ON. See if the charger boots normally.
- Use recovery procedure: Follow Hager’s documented recovery method (e.g. via USB, SD card, or special app mode) to reinstall firmware, if available to installers.
- Contact Hager support: If you cannot recover the firmware, contact Hager or a certified technician. The main control board may need to be re‑flashed with service tools or replaced.
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