This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
The system is an AC coupled ESS system and comprises MultiPlus II GX 48 5000/70-50, a current tranformer for the grid input and 3 Pylontech US2000C batteries.
As far as I can see it is all connected up correctly but as soon as I connect the VE.CAN on the MultiPlus to the A/CAN on the master battery I get VE.bus error #15 and the display on the Multiplus also says AC Disconnected.
I also have a low battery voltage warning although the BMS is saying batteries are at 48% and 49.2 Volts.
Trevor
You might need to connect all together, power up the system, update all the components and program it, then connect the battery can cable. Are you connecting to the BMS can port?
Steps in the VE BUS manual #15
The Multiplus is up to date as far as I am aware.
The batteries have no instructions about updating.
I used the GX version to keep it simple and avoid issues like this, but thanks for the suggestion.
Trevor
Good morning Trevor
I have exactly the same issue connecting to US2000 battery - error #15. I can see you have moved on, how did you resolve the issue. My problem is identical - even the screen grabs are the same.
Thanks in advance
Neil
