This is happening on 12 24 and 48 volt Smart Solar Charge controllers and Phoenix inverters and it happens in milliseconds of time even when there is a no load on the inverter and when there is a load on the inverter. It is also happening with the smart 75/15 charge controllers. Also, the load state of the controller default is always on but we are have issues with some of them going to load state off and not being able to be changed to always on?