Set volume flow heat pump

Hello,

I have a question for someone who knows about this. In the manual for my Arotherm plus 125/6 air heat pump, it states a flow rate of 950-2000 L/h. There is no indication of a minimum flow rate. So can I set the flow rate within the range of 950-2000 L/h? At the moment I have 1350 L/h and would like to reduce it a bit to about 1200 L/h. Would the flow rate still be sufficient for defrosting?

Best regards

Why do you want to reduce the volume flow?

Since I only have radiators, I could eliminate the noise on one of them this way.