If the heat pump is running continuously, it obviously needs the power too, right? And it couldn't be better than if it runs continuously at these temperatures. Or is it too warm in the house?
Regarding the 570 watts - that doesn't seem unusually high to me for the heat pump now. But I have a completely different and much larger one, so I probably can't assess it perfectly either...
Can you read the "compressor power in %" somewhere?