We are getting an error code 67 "BMS lost" on one of our systems. This particular system operates in offgrid status for most of the time, the owner connects to the grid when the weather restricts battery charging during the day.
The error code appears when the battery is fully charged (around midday) and the loading in the house is very low.
System:
Multiplus II 5kVA GX
Smartsolar 250/85
1x freedom won etower 5 battery
6x 540W panels
We have configured the system using ESS, is this the correct method or should we be setting it up using another assistant? Read somewhwere in the Victron documentation that you shouldnt use ESS for offgrid installs, however this system does get connected to the grid especially during winter months.
