Technical Support

I have two 5.5kw the older one has firmwares:

COMM: E428

MCU: 3382-0513

The new one is:

COMM: E428

MCU: 3382-1515

I believe the discrepancy is on the "slave" version. I've tried 3 times to get Sunsynk to make them the same but this is apparently the best they can do, or at least I assume it is since nobody communicates. Maybe it's hardware that differs and therefore firmware?

I'm not sure if it's OK to connect them now with that discrepancy, and if it is, which one should I make master and which slave?

Any assistance will be greatly appreciated!