I am having the same issue with my 12000XP. I run a 20kW Briggs and Stratton generator, and when it exercises the frequency changes to 50Hz. I was t...

I will look into this, but at the moment I don't have any information on the 12000XP and the new WallMount battery being certified for UL 9540

@lemoeller We don't have any plans for this. However, our newest WallMount battery has a connection that you can connect directly to it instead of usi...

@pigsy2001gmail-com I went ahead and set Battery Back up mode for you. Do you have EG4 WallMount battery?Also, remember you wont be able to discharge ...

Adding more context. I disabled the AC Charge Mode removing it from my working mode settings. This left only Peak Shaving Mode and the problem persis...

@eagleridgeCan you share a picture of how the batteries are connected to both inverters?

Eric, Any new updates on this yet?

@eg4eric i will try but i just had surgery and will have to postpone it. Is it hurting something as the fault comes a few times every day?

@ravasunpower Have you done a full system restart by removing all power sources? if not, I recommended doing one. Removing, battery power, solar power

I dont have a solution yet - but am working towards one (I hope)

@rev114 I apologize for the delayed response. I was out of the office most of last week. I saw that you got in touch with our tech team. Were you able...

@jared The solar generation forecast is a nice feature however the calculator definitely needs some work. My system is 15.4 kW into an 18kPV and to...

@jared any thoughts on the proposed idea above?

That's a stunning idea.