Orion XS 12/12-50A only charges when I unload the engine

DIY
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1

I have a problem with my Orion XS 12/12-50A, which previously worked before changing to a new starter battery on my camper.
Now it only charges when I unload the engine, brake or release the throttle. The engine is Euro class 6 with smart alternator.
The only difference I see on the victron app is, when I turn off the engine, the output voltage shows 0.1 volts, previously it showed the lithium battery voltage, such as 13.3 volts.
Otherwise it shows the same as before, charging in off mode and Input voltage 12.3 volts.

What is wrong now, when it only charges, when you release the gas pedal?

Settings are according to factory values.

2

You secondary battery voltage goes to 0V when you switch off the car? Check the negative connection between starter battery, Orion and secondary battery. Maybe the negative cable going to the Orion was left disconnected, or not fully tightened, when changing the starter battery. Other than that, the starter battery voltage, or if the engine is running or not, should have no influence on the Orions output, i mean not in this magnitude

3

Thanks for your help, I will check the cable.

Best regards……..Timo