I have done a search but can't find an answer relevant.
I have a BlueSolar Charge Controller-LCD-USB 12V-20A.
It has started showing a flashing error message L5C (or maybe LSC) as shown in the image below. "L" in the manual relates to the output load and sunset etc which doesn't appear relevant.
It doesn't appear in the error codes listed in the manual and I can't see anything useful on Google. It also doesn't appear to have any issues with the operation as it takes charge from the panels, and the loads which come via this unit.
Thanks for any help which can be offered.