E18
Amperfied
Firmware / Configuration Corruption
Display shows E18; charger indicates ‘firmware error’ or ‘configuration error’ and may not start.
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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, Corrupted configuration memory, Incompatible firmware version loaded, Faulty flash memory on main control board
How to Fix / Troubleshooting
Note: Follow only official Amperfied firmware procedures.
- Reboot the charger: Turn off power at the breaker for several minutes, then restore power and see if the error clears.
- Check for firmware update options: Use the Amperfied app or service tool to check for a stable firmware version and reapply the update if recommended.
- Restore default configuration: If accessible, use the configuration interface to reset settings to factory defaults, then re‑enter installation parameters.
- If E18 persists: The main control board’s memory may be damaged. Board replacement by an authorized service technician is required.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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