To perform a factory reset on your Mysa, please perform the following steps:
1. Press and hold both arrows for 10-15 seconds.
2. Allow roughly 30 seconds for the unit to reboot and initialize.
3. A smiley face should appear.
4. Hold the up and down arrows again until FR appears.
5. The pairing triangle will appear.
Your thermostat has now been reset to factory defaults.
Watch the video below: