Hey Ali,
Thanks for reaching out and good job on avoiding the 9kW beast.
My system specs are available in the post here - Struggling to get good COP from Daikin 9kW - #18 by KnightPhoenix
A few minor changes from the new rads page is the DT of 3 and the design flow temperature of 38 (meaning the bathroom is slightly undersided).
I have just over 20kW of radiators following the changes but would like to increase this in the future (by adding UFH downstairs and keeping a few smaller radiators to get to a 30°c flow temperature), the future being when the good lady allows me to start doing more renovations again following having the house in bits for weeks at a time for various projects.
As you may have guessed Matt and I have been at this for a while and are trying to figure out his these Daikin heat pumps should be configured to actually work at a reasonable efficiency level (although Matt’s radiator solution is somewhat more impressive than my system).
I fully get that different meters may be a bit out and the data from ESPAltherma is not always 100% (I use P1P2SERIAL for my DHW cycles and internal temperature reference and it has it’s moments).
I did have a play with the madoka room stat led but it got a bit too dim tonread. I will take another crack at that next week or over the weekend and see if that can save a few watts (shame it doesn’t have an auto off after x seconds settings).
Just out of interest where is your clamp meter connected, is this inside one of the consumer units or inside the ASHP as it could just be there is power being taken to another part of the system before it gets to the shelly.
Having spent soo long taming the 9kW beast this becomes somewhat addictive and any potential to squeeze a bit more performance out of this unit is something I am keen to investigate and review.
Thanks for all of the info on your setup and if you have any questions or want to throw a few ideas about don’t hesitate to shout. The more everyone collaborates the more we all win.