For the last year or two my setup has been running flawlessly. It consists of:
1 Cerbo GX (Ran Firmware 3.30 before things started happening when upgraded to 3.42)
3x MP-II 48/5000 Firmware 497
5x Pylontech US5000
Victron EVCS NS. (2.00)
Since a week or so the system updated to 3.42 and started charging/discharging 24/7. I’ve placed the system in keep batteries charged and that worked. During this I checked all the settings, all the connections, etc. but I can’t find a thing.
When I look at the VRM dashboard the MPII icon keeps changing from “Externaly controlled” to “discharging” and back. And eventhough there is a 90% plus charge in the batteries It won’t cover my AC-load at any given time and it uses the grid too…
The strangest thing is that this behaviour started after I updated to 3.42 AND/OR we experienced a power-outage on the same day. I can’t really figure out which is the culprit and if it’s just software or hardware that is causing this behaviour. The entire area had an outage for 15 minutes due to a lost transformer that caused the voltage to drop and turn of the grid in our area.
[Edit]
I found SCS (Shared Current Sensor) to be turned on. I can’t recall if that has been the case since I installed the system.
Looks to be in order. I also tried to detect the battery again and this hasn’t resulted in anything new…
I wanted to look into the DESS ahead of the end of my current contract. I returned to 3.30 without succes.
I’m going to turn the switch tomorrow and by pass my entire system so I can reset everything with a fresh installation and config file. If that doesn’t help I’m going to disconnect one US5000 module at a time and see if one is the trouble maker…
Suggests it is not out of the blue, it happened after the firmware update, since it is not a complete system update the start point for troubleshooting is to update the rest of the system.
The second option is to factory reset the cerbo (rollbacks dont always go right). But this doesn’t make sense if you want DESS.
Are you in parrallel or three phase? The tag on the post says parrallel… But three inverters is usually three phase.
That’s a good point. On the other hand, I was at home at the moment and updating because of the planned DESS when a poweroutage struck around the same time… The Cerbo has a 48V supply so that wasn’t hit and the MPII also run on 48V but still it could have messed up an update.
I’ve just turned off my entire installation and will update later in the weekend when I have enough time to do so without time-pressure. In the meanwhile I’m looking up the correct firmware files.
Since I’ll be starting fresh with the software, would a new config file be needed too? Are the assistants also different from what my MPII had so far?
Yeah a firmware update means a fresh start.
Easy to set up a three phase with VC now.
But the rest for ESS is done with ve bus configurator and ve config.
Make sure all your programs are up to date before beginning.
And i know you know about the guide.
So you say that updating VenusOS software ie from 2.92 to 3.42 or the new 3.51 require to also setup the inverters VEConfig? I have always seen this as 2 different things.
One is software like windows on a computer, the other is more a bios setup which do not need to be updated/altered due to a windows update(best example I could think of )
I have updated or refreshed my VenusOS many times without touching the inverter setup VEConfig.
Please elaborate why this should be redone due to a software update?
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