E13
Ngenic Time Synchronization Failure

Thermostat shows E13 and the app reports ‘Time sync error’; schedules may run at incorrect times.

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Possible Causes

Loss of connection to NTP/time servers via Ngenic cloud, Incorrect time zone setting in app, Firmware bug in timekeeping, RTC (real-time clock) backup battery failure on thermostat PCB

How to Fix / Troubleshooting

Safety: No electrical work is required.

  • Check internet/cloud status: Ensure the thermostat is online and E01/E02 are not present.
  • Verify time zone: In the Ngenic app, confirm the correct region and time zone are selected.
  • Manual time set: If supported, set the time and date manually on the thermostat as a temporary workaround.
  • Reboot device: Restart the thermostat to force a new time sync attempt.

If E13 persists while the device is online, the internal RTC or firmware may be faulty. Contact Ngenic support for a firmware patch or device replacement.

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Repair Difficulty

Very Easy 1/5

Required Part

Ngenic Thermostat Display/Control Unit
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