E13
Vestel
Real-Time Clock (RTC) / Time Synchronization Fault
Charger shows E13; scheduled charging or load management does not function correctly.
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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
Failed RTC chip on main board, Depleted RTC backup battery, No NTP time synchronization due to network issues, Corrupted time settings in firmware
How to Fix / Troubleshooting
Safety first: Timekeeping faults are low risk but still isolate power before board-level work.
- 1. Check system time: Access the charger’s configuration interface and verify the displayed date and time. Correct manually if wrong.
- 2. Enable NTP: Ensure NTP (network time protocol) is enabled and that a valid NTP server address is configured. Confirm the charger has internet access.
- 3. Inspect RTC battery: With power off and cover removed, locate the RTC backup battery (often a coin cell) on the main control board. If voltage is low, replace with the same type observing polarity.
- 4. Firmware reset: Perform a soft reset of time-related settings or a full configuration reset if recommended by Vestel documentation.
- 5. Replace main board: If the RTC chip itself has failed and cannot maintain time even with a new battery, replace the main control board.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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