Deye hybrid 3.6 - is that normal?

• DEYE SUN-3.6k-SG03LP1-EU

1. If set Sell to Grid. Always buy around 50w. If you turn off sell, buy from grid 0w.

2. Hello. When connecting the meter over Modbus Chint-3P, watts jump. But not always: need sun power - home load around like on screen.
The current Transformer always stay.