Smart solar mppt rs 450/100 not feed in grid when battery is full

Do you have any ESS assistants installed and enabled?
Because in order for what you want to work, according with the scripts, you need to:

  1. Have the assistant with ID=5 installed. I suppose it’s the ESS assistant. Check /Hub4/AssistantId = 5
  2. Have the Multi with the AC connected. Check /Ac/ActiveIn/Connected = 1
  3. Have DC coupled feed-in excess enabled. Check /Settings/CGwacs/OvervoltageFeedIn = 1

If all are checked, then the system will maximize chargers’ production.