Hi there,
my Growatt SE 5000 has been showing the same problem, after exactly one year of been installed, as Hussein described. I have contacted my supplier that is Autosolar in Spain, after checking the inverter they just sent me a new one.
No details or explanation about what nor why error 02 happens.
I wonder if a new serie of the device with that problem solved has been or is in the process of being built by Growatt.
Any idea?