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Thanks for the reply. I think this is the firmware version - Inverter Verson 3A0029

Hi, I have the Solis 5G-RHI-3.6-48ES inverters, I have 12 panels connected to MPPT1 and 10 panels connected to MPPT2, MPPT1 is on an easterly facing roof, MPPT2 is on the westerly facing roof. I get the following error quite randomly: Over Voltage Battary Hardware(186AF) I've asked Solis support...

Inverter Version 3A0029

Thanks, The only thing I have with regards to this error is it stops the PV generating and it pulls from the grid instead. If it's a false error then I'd prefer to get it resolved in a future FW upgrade but it's more of an annoyance than a real problem if I'm honest.