Solar won't run - unless genny charging too

Morning,

I assume I have some setting wrong somewhere, because my solar system isn’t charging my batteries most of the time. Once a day, in full sun, it will do 0.01kW of energy, which isn’t enough to keep my power up, so I have a generator.
However, when I run the genny, the solar has produced around 200W consistently, today - even partly shaded.

It’s currently sat at 67V, 280W.

But if i don’t have the generator running, the solar will sit at 72V, and 0.00 W.

I’m using Pylontech batteries, a Cerbo-GX, Multiplus ii and lynx DC distributer.

Anyone have any ideas why this might be the case?
Or, even better, how to fix it?

@IdrisE

Please describe your system more detailed.
Island/off grid or grid tied?
Which solar charger?
If you use a micro inverter, where is connected?
What type of generator AC or DC and where is it connected?
How many panels and which configuration / strings?

Thank you for replying

Island system
using the SmartSolar charger MPPT 150/45 rev3 Firmware 1.64
No micro inverter
Genny is AC, connected as though Grid (AC in:1)
4 panels, 1 string to get Voltage higher. (Limited roofspace on the boat)

Is the mppt connected to the cerbo?

Pls.post the settings of the mppt.

Here are the settings,



Pls set the charge voltage in the mppt to 53.5v