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I had to do the same. Took down my six pcs of Easun SMRII 5.5Kw and replaced them with Growatt SPF5000ES. The difference in everything is amazing. Everything now works as it should. I dont know about Easuns newer inverters, but the old models like SMRII are hopeless.

So, I now replace my Easun for Growatt SPF5000ES . And I am very happy.

I was also looking at the Growatt 5000ES! Perhaps better to get them.

I have the same problem with the same inverters, EASun Isolar SMR II 5.5kw. What i have been told is that the firmware is very old in this model and are blocked so settings sent over RS232 will not be accepted. And the firmware can not be replaced. I have mailed Sorotec who I have been told are...

EAsun SMR II can not be programmed over RS232. Software like Watchpower, Solar Assistant and ICC-PI are not able to send settings to SMR II. Probably because the manufacturer (Sorotec?), has used a lousy firmware that can not be upgraded. What I would like to do is to be able to change the...

The AC are all 6mm2. Batteries 50mm2. Pv 6mm2. No these inverters are unfortunately Easun SMR II. They are manufactured by Sorotec ( I think). Rgds Sebastian

Hello Frank! Thanks for Your reply! I will read it carefully tonight. Right now I am actually setting foundation for my 4th string of nine panels. Have to make use of the nice weather we have today on the Swedish west coast. I just wanted to quickly comment about the connection to grid. I have...

Hello there! I have 6pcs of EAsun SMR II 5.5Kw (sorry!!). They run in pairs in a 3-phase setup. I have at the moment 27pcs of 550W panels divided over L1, L2 and L3 inverters (9 each). The full system will have 9x6 panels (9 for each MPPT) which is the maximum possible. The system works as it...