Hello.
I’m new here.
I’m in Belgium.I have a 3-phase system with 3x MultiplusII 48/5000/70, initially 1 with integrated GX card. 31kWh pylontech Force L2.
After installation it was working fine in pure ESS mode, self consumption only.
Some time later I started using a cloud based application called GBB to charge the battery based on EPEX prices during winter.
It was OK, until 1 day I got the issue that the message “No ESS assistant found” show up on the console (under settings/ESS) and generates “BMS Lost” alarm followed by “Low Battery voltage” alarm. At the same time the system becomes intermittently unreachable from LAN. M
Multiple reboots, firmware up/downgrades didn’t help. Putting the system in “Keep batteries charged” overnight seemed to clear the problem, so that in the morning I could switch back to normal mode.
Initially I removed the communication with the cloud GBB service to check if the problem was related to it. But it was not.
I got it back to work for some time, but some days later again the same issue. I decide to stop using GBB and switched on Victron’s Dynamic ESS.
That cleared the fault and worked for 2 weeks with no issues.
I then changed the Dynamic ESS from green mode to trade mode.
At the same time the issues came back. No ESS assistant found.
For some very short time, less than a second, the normal setting “optimized without battery life” shows again, but disappears immediately.
During this happening, the battery is no longer charging/discharging and the system is useless for my application.
There seems to be a relation between the issue and the communication between the Cerbo and any external service or control via LAN or API.
Together with the dealer we already replaced the GX card in the Multiplus. That helped for some weeks and the issue came back. Then we took the GX card out of service and installed a Cerbo.
Same problem after a few days.
I have no programming skills at all.
Is there any way to trace the data/messaging that runs from/to the Cerbo to find ut if someting abnormal happens there.
Did anybody else have this issue so far and the solution to clear it?
I found 1 topic from describing exactly the same issues, but there are no answers to that topic;
Many thanks for your replies.