How to Delete History Data On Inverter From OSS system Leave a Comment / OSS System / By amos How to delete history data from oSS system Our Engineer owns the authority to delete history data from OSS system. Here attached procedures. 1.Acess OSS system http://oss.growatt.com/login?lang=en 2. Select System Set –> System Management 3. Type Inverter S/N based on different inverter type, then submit it. 4. System will delete data in suitable time at that day.