I have a problem with my system switching off with Error#1.
The system was set-up as 3phase/2parallel and this Error#1 was quite frequent.
In order to pinpoint the inverter causing it, I set the system up with 3 units as 3phase (3 units are on and 3 units are off).
After 10 days of quiet the Error#1 started again.
The unit on Phase L3 turns off and the other phases follow with Error#1.
After 3 seconds of total dark the L3 unit starts blinking "bulk" LED.
After 30 seconds system restarts by itself.
Does someone know what this solitary "bulk" blinking LED indicates?