I checked the system documentation for my Lithionics batteries, and it recommends that the equalization mode be disabled, so I turned off the batteries after turning off the solar charger and inverter, let them sit for a short while, then turned everything back on again (the modern equivalent of hitting a malfunctioning part with a hammer). This, combined with some charging from the solar panels, cleared all the error (RVC) codes from the batteries. For this purpose, I plan to pay more attention to voltage levels in this process rather than the percentage SOC displayed on the app.