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After fixing error code 09 (DC bus soft start failed) by replacing a few MOSFETs and IGBTs, the solar inverter stopped detecting solar panels. I checked the voltage at the fuse (before and after) and at the end of the cable. In all cases, it read 400 V. But Immediately after connecting the...

Hello, I have a 5 kVA/5 kW hybrid inverter (model name: MKS II 5KW-B) and a 16s 48v 230aH LiFePO4 battery bank with a Daly BMS 150A for about half a year now. Everything worked like clockwork up until a week ago when at night time the inverter couldn't detect the battery anymore (the monitor...