Hi, my multiplus 48/3000/35-50, is showing an VE BUS error code of 8/11 on a mimimum VE BUS firmware version 454. Owners of units before serial serial number HQ1731A61ZR are instructed not to attempt upgrades and to contact a qualified Victron trained expert. Are any community members aware of any qualified victron trained engeneers able to undertake the work for myself in North Wales.
