Samsung EHS Gen 7 strange power consumption

Hardware Heatpump
1

Hello Everyone,
Can someone help me with my HP consumption?
I’ve a Samsung EHS Mono Quiet 12KW, some days ago I connected HA to check power consumption and I have this graph.
I find very strange the power fluctuations, every 2 minuts the compression increase and decrease KW usage…
It isn’t on/off, seems to be Hz change, could be?

Thank you for your help.

Screenshot_20241122_041305_Home Assistant
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2

It seems that Samsung heat pumps like to hunt under certain conditions of low load and you’ll find a few examples here.

This what my gen 6 did a few days ago. Input power changing from about 350W to 620W with a period of 2 minutes.

Screenshot from 2024-11-22 11-14-16
Screenshot from 2024-11-22 11-14-161138×511 197 KB

3

My Gen7 does it off and on as well
(sometimes for much long than below, this was recent)

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4

Dear all,
I can confirm that on my gen7 5kW too.

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Sounds like it’s its way to drive the HP and maintain the requested water law target.
Also, I can confirm that it’s mainly during low demand period, on my graph for example, only the zone with the lowest dissipation was on, and therefore leading to low demand, hence the power regulation.
Cheers