BMS overload -what is it, should i be worried?

#1 Karen 2022-09-12

I have just noticed a notification on my inverter icon. When I checked it out it said "BMS overload". It lasted for about 5 mins. What is it, and should I be worried? It seems to have coincided with a sunny period, just as the battery was reaching fully charged. At the start Solar generation was 2116 and load was 1159, battery was -651 (but battery data says it was 100% charged) and grid power 957. When it ended 5 mins later the generation figure was 2103, load 1622, battery 0 (fully charged) and grid 481. The battery temp stayed constant at 23 'C, but the inverter temp did climb up to 46'C, but has now dropped back down to normal running temperature. Was this caused by a power surge in the grid, or has my system thrown a wobbly?

#2 Yorkie71 2022-09-12

Karen I noticed a similar error this morning. the notification was for the other day. Similar situation to what you describe. Battery was at 100% at the point of the error. System seems to be fine now but it would be good to know what the error was.

#3 chris_p 2022-09-13

Thread here about 'BMS Over voltage' https://community.givenergy.cloud/d/404-what-is-bms-overvoltage-notification-mean not sure about 'BMS Overload' though.

#4 Yorkie71 2022-09-13

chris_p Thanks. This comment on that thread gave me the reassurance I needed.

#5 Karen 2022-09-13

Thanks everyone - it hasn't happened again , but if it does I won't panic next time !

#6 wilfleek 2022-09-14

I had similar notifications, the issue was a loose connection in the DC isolator. Tightened that, and the issue went away.