Hmmm, very strange. You don't have any EU-splitter cables between it and your house (that is one that could turn off and disconnect, not necessarily always disconnected)? They're the only immediately obvious possibility it might stop trying to send power. It must be a sending problem down somehow as the bandwidth proves the KU connection is fine.
No, i dont have any EU Spliter cables, none in my house, none near the wind turbines, never even crafted one.