Strange MPPT fluctuations SmartSolar Charge Controller

[spicedreams (Graham)]

I think you and I may have the same problem…

MPPT turning off and on again

Sunny day here shining on my ~4000 W of solar connected to the SmartSolar (part of an EasySolar 5000) driving a pair of 48 V LFP batteries each with own BMS, linked together by RS485 and to the EasySolar by CAN.. The current to the batteries (as seen on the GX console and also in VRM) is oscillating rapidly between close to 4000 W and 0 W. When I pull down the log spreadsheet from VRM, I can see Solar Charger [273] MPPT State changed suddenly at 11am (local which is +13h) from steady “MPPT act…