Is my sense failing after 8 years?

For the last few days, my sense signals seem to get mixed up for short periods of time. Suddenly, the total consumption seems to show patterns of the solar trace and even goes negative (see picture). Later things normalize again.

I just returned from overseas and I inspected all clamps and connections and everything seems OK. I wonder if this is a hardware fault or some firmware issue.

In contrast, today everything is back to normal, with the red trace showing the typical always on and fridge cycling.

I do have a few more screenshot of similar temporary glitching from the app..

Are there any tests I can do to pinpoint the problem?.

So, I rebooted it once more on Monday and it has been stable since. We’ll keep watching… (The consumption peak in the early hours is the heat pump kicking in. The later spikes are the espresso maker)

So the same thing happened again yesterday around 4:30.
Solar dropped steeply (Inverter saw the solar continue in a nice bell curve!)
At the same time the consumption went way negative (-1150W!)

It somewhat recovered by 6pm but was still a bit weird until I rebooted this morning.

Obviously, there seems to be some little bug in the firmware that is hard to understand but should be investigated.

(I know this forum is going away, but I thought I’ll update my older post showing the same issue)