"Fatal EEPROM fault!" on Network UPS Tools?

Configuration
1

I have a brand new Eaton 5SC 1500 UPS which I’ve connected via USB to my Home Assistant with the Network UPS Tools (NUT) add-on and integration. The sensor.eaton5sc1500_alarms reports “Fatal EEPROM fault!” Has anyone run into this? There are not faults displayed on the UPS itself.

Any advice?

2

Seems to have been reported to NUT devs before: https://www.mail-archive.com/[email protected]/msg09987.html

Check if your UPS firmware is up to date.

3

@tom_l Thank you. I will give that a try.

1 Like
4

I checked the firmware and it is up-to-date so I don’t believe that is the cause of the error message. Not sure what to do. I’ve reached out to Eaton to ask them.

5

Did you hear back? I’m having the same issue

6

@ebf – I was told it is a firmware issue and that there is nothing wrong with the device itself. Have you been able to resolve it?

7

Did anyone in this thread figure out the issue? I have a ~2 year old Tripp Lite Smart Pro 2200 that has given me this error since day 1. I was unable to solve it 2 years ago and decided to ignore it, but now the issue is causing random graceful shutdowns as my servers are interpreting this fault as a power failure. Would love to figure out the issue before I set this UPS on fire.