Alun Jones<p>This morning I noticed that our <a href="https://social.ty-penguin.org.uk/tags/givenergy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GivEnergy</span></a> solar inverter wasn't talking to Home Assistant.</p><p>Tested using my own older scripts which talk to it directly via ModBus. Similar failure.</p><p>Tried opening the inverter's Android app - wouldn't connect.</p><p>Dug into it a bit more and discovered that it was reporting a system date of 2025-13-31.</p><p>So I reset the date on the inverter and everything came back to life. Looking on the forums, lots of other people are seeing the same problem. Wouldn't like to be working on their support desk today!</p><p>Who needs Y2K bugs when you can have 31/12 bugs?</p>