I’m having a MultiPlus 3K 120 configuration problem… I’ve just finished the build of a lithium system for my Airstream, and am having a configuration issue I can’t figure out.
The system is all-Victron, with 3x200Ah smart batteries, Lynx BMS, the Multi, an MPPT 150/35 solar controller, DC/DC and Cerbo. When I turned the MultiPlus on, it worked perfectly, and immediately began charging. Its defaults were the wrong battery type, so I went in with VE.config and changed it to Victron LiFePo controlled by BMS, which brought up all the (apparently) proper charge settings. But as soon as the Multi reset after uploading the settings, it threw up a low battery warning (the batteries are all at 13.45V) and a VE bus error #15. (I made no other changes to the config except to limit the AC input amperage to 16.)
Resetting the Multi to defaults makes the errors go away.
Any idea what might be going on?