Wow, thanks this is really a huge forum thread. Will have a look with some translator help.
Yes, this zigzag pattern must be some bug I believe in mim-e03en control kit. Shame Samsung did not address this issue yet. Definitely not normal and I fear it can have negative impact on long term durability and also on overall performance. I can’t see any reason why it should manifest such crazy pattern increasing and decreasing power significantly over short period of time. Look at this screen from today. Was pretty warm ~7C on average, COP around 4 which is pretty good but that pattern is insane.
Here details from TAC4300 Modbus smart meter… What to say…Shall I send this to Samsung to fix this crap out ? It basically fluctuates in regular intervals by 400W… That’s not normal…
Does Samsung has any support team for heatpumps ? Would throw a email on them.