Go to "settings" then "next" and confirm that the "Max Grid Input Current" is set to "15A".2. Click on the central button and look at what it is to check that the central unit is detecting your B230 or B300 batteries in "battery information". 3. Navigate to "Alarm" and check that there is no current problem detected. 4. Navigate to "Data" and then "Alarm History" and check if there has been a recent problem recorded These checks will allow you to establish whether something is wrong with the battery or if the problem lies somehwere else. After proceeding to these checks, if the problem persists, please contact us.