FoxESS Community - Owners & Installers Forum

Yesterday morning I found the inverter was offline with "SCI Fault" on the display panel and had been since about 4am. I tried a cold restart and that fixed it and it worked for the rest of the day.

This morning I found the inverter offline again, since around 1am. Tried a cold restart but SCI fault came back immediately (before inverter would produce any power).

I emailed Fox support this morning but not expecting a reply back until Monday. It would be a sunny day today wouldn't it!

But I have just discovered while looking back through home assistant activity logs for the inverter Manager Firmware that it seems a firmware update must have happened at 03:13am yesterday as the Manager firmware changes to 1.69. Prior to that on 24th February it was 1.58 which I think it's been on since May last year when I requested Fox to update a new install with the latest firmware. So a firmware update has been sent but I didn't request one and I doubt my installer has done it (small chance but I suspect not).

I wonder if anyone else has had any similar issues and what was required to fix it? At this stage I'm suspecting either firmware files provided by fox to put on a USB stick or an inverter replacement.

Since I didn't know what a SCI fault is I did a quick search on DuckDuckGo and this link came up, hope it helps.

Thanks for that. I had a look at that video on Friday morning but it was useful to have another look at it.

I should have mentioned on my original post that yes my inverter is showing the master and slave firmware versions are 0.00. Hopefully Fox support can fix it remotely when their support office opens.