I have a system installed for over a year and works fine all the time except for when I encouter an event that the batteries are going low and the inverter shuts down. When this happens it is was nightmare to have the system restart and now I couldn't restart the inverter at all. The system comes up with error #42 Inverter shut down (PV isolation).I get this error continuously even when the inverter is disconnected from the PVs and disconnected from any 220V line (L, N and E) are are disconnected. All voltages and grounding resistances that I measure seem to make sense.
Although I can not get the inverter to work, the batteries get charged so the solar control and chargers do work normal.
Firmware version is v1.10