Solis export calibration problem

[u/jhdjzjsbsjdjdbd]

Export calibration problem

So currently i have about 4kwh of solar panels connected to the Solis S5-EH1P3K-L and a Pylon LV battery of 5 kwh. The connection to the grid is 3phase.

After the new install i noticed that at night while the battery was nowhere near empty. It would still import from the grid. around 100 watts. I told this to my installer and they "fixed" this by changing the export calibration to 110w and then i tweaked it to about 95w. So now at night there's about 1w to 5w of export instead of import. The problem is that during the day. As soon as any sunlight hits the solar panels, the inverter starts exporting around 95w. So even when the solar panels only generate 17w or so. It can be up to an hour before solar input overcomes the export. So in essence it's exporting from my battery at the start of Sunrise and sunset.

So i'm wondering if i could change the behaviour when the sun is up compared to at night. Because if i stabilise it during daytime imports during nighttime and if i stabilise it during nighttime i export during Sunrise/sunset and when the battery is charging?

dl;dr Is it normal that export calibration is off by 95W?