There’s a list of all the modbus registers in this repo: GitHub - glynhudson/samsung-modbus-mim-b19n: Example script to read data from a Samsung Heat Pump or HVAC unit using MIM-B19N Modbus module · GitHub
If you want additional information, then you may need to talk directly to the heat pump bypassing the modbus module. There’s some thread about this on the forum, I don’t have experience of this myself:
e.g
Dear all,
After a few weeks playing with my ASHP Samsung Mono Gen 7 R290 Gen7, I’m finally having a nice step done.
Although chilling outside temperature have not reached us (just yet). And therefore I don’t know if my ASHP DIY setup is having a good CoP. I’m willing to share with you my latest dev around the samsung monitoring/controlling.
Here is the repository I’ve started: GitHub - 70p4z/samsung-nasa-mqtt: Bridge for home assistant to rule your EHS
It’s a python tool, meant to run on ras…
This post summarises some of the available options for monitoring operating data directly from your heat pump controller, including the refrigerant side of the Outdoor Unit (most current OEM monitoring packages omit this).
Controller monitoring is especially useful to those interested in understanding some of the control algorithms that Samsung apply, in order to explain observed heat pump performance, and to help with settings optimisation.
As you will see below, there are a couple of low-cos…