E20
Vestel
Configuration Memory / EEPROM Fault
Charger displays E20; internal memory or configuration cannot be read.
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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 data, Failed EEPROM or Flash memory chip, Interrupted configuration write operation, Firmware bug affecting memory access
How to Fix / Troubleshooting
Safety first: Memory faults are low electrical risk but can prevent safe operation. Isolate power before board replacement.
- 1. Soft reset: Reboot the charger and see if E20 clears temporarily.
- 2. Backup and reset: If possible, back up configuration via the service interface, then perform a factory reset and re-enter configuration parameters.
- 3. Firmware update: Load the latest firmware to the main control board to correct any known memory handling issues.
- 4. Reconfigure from scratch: After reset, manually reconfigure all settings rather than restoring a potentially corrupted backup.
- 5. Replace main board: If E20 persists and configuration cannot be saved or read reliably, replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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