Why does my MPPT controller display 'ao 124' and lock the buttons, and is there software available?
Based on the MakeSkyBlue S3 series manual, the startup screen typically displays the model and version number. The code "124" likely refers to the…
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MakeSkyBlue S3-30A MPPT Solar Charge Controller User Manual — questions & answers
Read product questions and troubleshooting answers linked to MakeSkyBlue S3-30A MPPT Solar Charge Controller User Manual.