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error Finder
Error Code Er0
Generic Error — a general communication or system error has occurred with the Wi-Fi connection.
? What Causes This
Unspecified error in Wi-Fi connection or data communication.
✓ How to Fix It
- Perform a force sync by long pressing the Finder button with display off until dashes appear.
- Check network connectivity.
- Verify 2.4 GHz network availability.
Source: page 18 of the official manual
From the manual
This error code appears in:
Finder IB1C91 Bliss Wifi Chrono Thermostat