Hi I have 4 sites doing the same 5 sites doing the same thing. They all giving me a F56 error when grid needs to take over when battery is discharge to preset SOC in system mode. These system have been running for months no issues. Sunsynk Support South Africa told me my installation is shit that is why I am havumg these issues without having the facts that is why i am on this forum to see if I am not alone. Any way on fixing this please.