What does F0 error code mean on mspa Nest?
- CCarolyn WatkinsSep 23, 2025
If your MSpa Hot Tub is showing an F0 error, it indicates that the water temperature is either below 0°C (32°F) or exceeds 50°C (122°F). In this case, change the water. Alternatively, the error could be due to a temperature sensor failure, in which case you should contact your local MSpa Service Center.









