E18
Heidelberg
Configuration Lock / Parameter Corruption
Charger shows E18, access via app or web interface is blocked, local display may show ‘config locked’.
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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
Corrupted configuration memory, Unauthorized configuration attempt, Incomplete firmware update, Faulty EEPROM/flash on main board
How to Fix / Troubleshooting
Safety first: Configuration issues do not usually affect electrical safety, but do not change protection settings beyond installation limits.
- 1. Attempt soft reset:
- Use the local interface or app to perform a soft reset or restore default settings (if available).
- 2. Power cycle:
- Turn off the breaker for 60 seconds and restore power.
- Check if E18 clears.
- 3. Reapply configuration:
- Log in with installer credentials and re‑enter key parameters (supply type, max current, RFID settings).
- 4. Firmware reflash:
- If allowed, reload the latest firmware from Heidelberg using the official tool.
- 5. Replace main board if memory faulty:
- If configuration cannot be saved or E18 persists, the non‑volatile memory on the main control board may be defective and the board should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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