negative power factor with Power ok?

Hi everyone

after looking around the internet for quite a while and not finding anyone with that exact question, let me ask myself.

i installed a pro3em yesterday at my new place and the measuring works as intended - verified the cabling etc.

Wattage looks good, amps and voltage all fine.

however - the power factor shows negative on 2 of the phases. This sounds strange to me as there is no large motors etc connected to them constantly. On one of the phases, my washing machine is connected and it goes straight to -1 power factor when its running.

i've verified the direction of the clamps (also, power etc is shown correctly positive).

am i missing something? is this intended? my expectation would be a power factor >.8 on all phases.

thanks in advance for any insight.

good to know i am not going crazy then - thank you for the quick reply!