This trip happens after a thunder storm. I suspected one of the CT’s. I swop the two CT’s to see if the fault move. The fault stays the same. I measured all the components but all give good readings. My next step is to change out the complete main PC board. Does Victron sell this boards?
No, you would need to take it to a certified repair center. With lightning events there could be other causes so I would carefully check the installation, wiring and other components.
I have had a dodgy circuit breaker and even plug socket cause issues with local strikes.