Hi @gerione,
Great work here, investing so much time to give to the community.
I have just bought a Daikin altherma 4 air/water heat pump(the combination EPSX10P50A-EPSK08AW1). Based on some googling and your post here I looked into the Daikin home hub (ERKHH) to connect HA>your integration>EKRHH>EPSK08AW1 though nowhere found documented that those components are compatible. In my search I eventually ended up with a very friendly guy from Daikin Netherlands who told me that for the Altherma 4 no EKRHH is needed (and not even compatible anymore) Instead the indoor part (EPSK08AW1 in my case) is able to talk modbus directly.
So that sounds great, one less moving part, and over 300 Euro saved! I got the interface specs from him which for unknown reason is not documented anywhere online. Quickly glancing over it, it seems to match the modbus spec of the EKRHH. with a bit of luck i should be able to just point your integration to IP i am getting from the heatpump once i have it connected.
here a screenshot
or would that be too optimistically?
Next week all gets installed so as soon as the thing is powered up i’ll connect it, of course will share here.
Anyone else having experience in connecting the Altherma 4 heatpump of Daikin?