My 16kW (Hydrosplit), is able to run as low as 720w, including about 60w for the circulator, when is warm outside. Lowest LWT I have set is 30ºC, as that is the minimum I can dissipate. You should always set the minimum LWT to what you can dissipate continously to avoid cycling, at the expense of having to turn on and off if it gets too warm.
If you do not do this, the HP will cycle, killing efficiency and possibly increasing wear. Daikins have an awful cycle start from what I can see.
My 9kW seems to restart quite gently when it’s cycling. I don’t have proper monitoring, but tends to start up at 20l/min with 3 degrees temperature gain, with power input of 900W or so, which would be a cop of around 4.
If I turn it off during the day, then when I turn it back on, I use the LWT adjustment to drop temp way down (around 4 degrees above the water temp again), and raise it over time. (Haven’t got round to automating that yet)
When it’s defrosting, it’s again helpful to adjust lwt down a way, to give a sane restart.