E18
J+ Booster
Configuration / Calibration Data Corruption
Charger shows E18; may indicate a configuration or calibration error.
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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, Flash memory corruption on main control board, Incorrect region or current limit configuration, Software bug in configuration storage
How to Fix / Troubleshooting
Safety: Configuration errors usually do not pose immediate shock risk but can affect safe current limits.
- Factory reset (if available): Follow the J+ Booster manual to perform a factory reset of settings.
- Reload firmware: If the manufacturer provides firmware update tools, update to the latest version, ensuring the process is not interrupted.
- Reconfigure limits: After reset, set the correct maximum current and region parameters according to your electrical installation.
- If E18 persists after reset and update: The non-volatile memory on the main control board may be damaged and the board will need replacement.
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Repair Difficulty
Medium
3/5
Required Part
J+ Booster Main Control Board
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