I thought it might be useful for the Vaillant Arotherm heatpump and its owners to have their own thread. So any questions, queries, things we’ve learnt and performance chatter can go in here. For starters, anyone looking for in depth performance information, this technical document from the Czech …

Which version is that and where do you find the setting? Ate you on Android?

Just updated the app on iOS and found it. It’s in settings\control.

Finally, the MyVaillant app is closing in on the other brands ASHP data/apps. There is still catching up to be done, but they are on the right track.

[image] Diagnosing Arotherm+ 5 & Radiators in Scotland I am not aure what exactly the expanded mode does, in expended mode, the heating is shut down when Temp is 3/16K (0.1875°) abobe the target T and reactivated when T is 2/16K ( 0.125°) under the target T + it include the active mode I’m in…

Hi, Energy integral is set on -60° by default. What are the impact on COP ? and on the heatpump itself ? when lowering this setting up to -120° to reduce the cycles ? in other word, why is it -60° by default :thinking:

If you decrease this to -100 (minimum), you get less cycles, at -30 (maximum) you get more cycles. With less cycles at -100, you have a larger under/overshoot of the target flow temperature. With the -30 setting your flow temperature has smaller over/undershoots. This impacts COP as well. At -100, a…

I tested some more with -100°min. I am getting a marginally better COP over the cycle - maybe around a 2-3% difference compared to -60°min. That’s probably the initial transient of having the pump running and not much heat going in which contributes relatively less space in a longer cycle. I think o…

Hi, as I mentioned in other Thread I’m new here and have a Question about the Energy Integral. I thought that it is always a curve (like a Sinus Curve) but when I look at Grafana I see that it has those I will call it " Half Curve" between the Cycles. Can somebody explain why the Curve form the Ene…

The EnergyIntegral is clipped once it reaches +100°min - it cannot go any higher. This is why you see the flat region at 100 that only starts to drop once flow temperature drops below the target.

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