Hi everyone,
Hopefully this is allowed. We're without power in Australia due to storms and we have a 3 phase 70kw generator installed to power the house in such events.
It was running for 24hrs without issue but then it had an undervolt alarm and shutdown. Now that may have been due a fuel shortage to be honest. Since refilling though, the generator starts fine but after between 10 and 15 minutes there is a Gens Overcur Alarm and it shuts down.
In the event viewer it appears the it's the third phase that is the problem with it reading Amp 5 3 23
The house has no 3 phase equipment in it and a shed with a 3 phase outlet isn't connected.
Does anyone have any idea on troubleshooting
![[Help] AC drain riser not flowing, results in backflow through interior unit](https://i.redd.it/h4m9rpz3ejb91.png)

