E14 error and thermostat shows incorrect time or cannot maintain time after power loss

Safety: No high‑voltage exposure for this fault; do not open the unit unless necessary.

• Step 1 – Enable network time:
  • Ensure the thermostat is connected to Wi‑Fi and the Gosund cloud.
  • In settings, enable automatic time synchronization if available.
• Step 2 – Check time zone:
  • Verify the correct time zone and daylight saving settings in the app.
• Step 3 – Power stability:
  • Confirm that the thermostat is not losing 24VAC power frequently (see E06 steps).
• Step 4 – Firmware update:
  • Update firmware via the Gosund app to correct any known RTC bugs.
• Step 5 – Replace thermostat if RTC hardware is bad:
  • If E14 persists and time drifts significantly even with stable power and network, the RTC hardware on the main PCB is likely defective.
  • Replace the thermostat.