I use a MPPT 250/60 smartsolar with 2 x 1.5kWc (Voc 170V) solar panels and a 340Ah x 48V battery. On the MPPT, I notice that the current PV power non return to zero at night. It stays around 10-16W. Disconnecting PV panels using the PV braker don't change anything (it is not the moon light :).
If i use the remote plug to switch Off/On the charger, the unit return to 0W.
At night the PV voltage is around 50,6V (near the battery voltage currently 51,3V)
The FW is the last 1.37 version and the MPPT is 1or 2 month old.
Any Idea ?