FoxESS Cloud integration stopped working
Posted: Mon Mar 23, 2026 9:10 am
On Saturday, my FoxESS cloud integration stopped working. I have raised an issue on the Github site, but raising here too incase anyone else has had the same problem and has found a solution.
The Home Assistant logger is stating: Error doing job: Task exception was never retrieved (task: None)
and KeyError: 'device SN'.
In an attempt to solve, I have restarted Home Assistant, I have also obtained a new API key from my FoxESS account and updated my configuration YAML, restarting everything again. Still not working.
I have checked and the Serial Number in my YAML is still correct as the Serial Number of my inverter.
It was working without issue on Friday (and I have never had this happen before). Can anyone give any help as to the solution I need to run?
The Home Assistant logger is stating: Error doing job: Task exception was never retrieved (task: None)
and KeyError: 'device SN'.
In an attempt to solve, I have restarted Home Assistant, I have also obtained a new API key from my FoxESS account and updated my configuration YAML, restarting everything again. Still not working.
I have checked and the Serial Number in my YAML is still correct as the Serial Number of my inverter.
It was working without issue on Friday (and I have never had this happen before). Can anyone give any help as to the solution I need to run?