5Kva Quattro with Cerbo GX and Multicontrol. System produces "BMS communication lost" alarm when switching the multicontrol from inverter to charging (or vice versa) usually after a delay of up to 1 day. All LED's on the multicontrol flash. Control Control states alarm 'BMS communication lost'. The way out is to switch off the Quattro on the device, disconnect the cable from the BMS, switch Quattro on, plug cable back in and system comes on. New devices (Quattro is 2021 but BMS and remote are new. Cables are new and Victron originals plus tested by electrician and OK). System is on boat.
