Diakin has possibly the shittiest knock off of ecobee firmware Ive ever seen. Enough to nope out of it if i see it in the next apartment. Its infuriating coming from being on a nest prior.
Honestly, all of the controls for residential mini split systems are pretty awful. My Mitsubishi system has the MHK1 thermostat [2] which is Mitsubishi specific version of the traditional Honeywell thermostat. The newer MHK2 looks a bit more modern, but honestly isn't really any different in function.
1: http://www.daikinac.com/content/residential/residential-cont... 2: http://www.nonul.mylinkdrive.com/item/MHK1.html