Charger displays E15; app may show "schedule conflict" or "time sync error"; scheduled charging does not start.

Safety first: This is a functional issue; electrical safety is not directly affected.

• Check time settings: In the Rolec app or web interface, verify that the charger’s date, time, and timezone are correct. Correct them if necessary.
• Disable and re‑enable schedules: Delete existing schedules and recreate them, ensuring they do not overlap or conflict.
• Check network time sync: If the charger relies on internet time, ensure it has a working network connection so it can sync with NTP servers.
• Firmware update: Install the latest firmware if available, as scheduling bugs are often resolved in updates.
• Hardware RTC fault: If the time drifts significantly when power is removed, the RTC or its backup battery on the control PCB may be failing, requiring PCB replacement.