Quiet mode?

[LeiChat]

Hi. Is it possible to toggle a Vaillant ASHP's quiet mode through the integration/API?
(Or is that something you can schedule using the Vaillant controller/app, along with setback scheduling?)

[signalkraft]

I've only seen quiet mode settings in the advanced settings of the controller, I don't think these types of settings are available in the app (and therefore over the API).

[LeiChat]

Thank you.

Have seen a suggestion that enabling quiet mode is a way of throttling the heat pump, so it uses less electricity.
I was optimistically hoping that it might be something I can toggle through HA.

[rmalbrecht]

The quiet mode put's a limit on the upper modulation level. My Arotherm Plus 55 can modulate between 30% and 100%. If you enable the quiet mode, the upper modulation is limited to 60% or so. The concrete numbers are somewhere in the documentation and depend on the model. So, yes it might reduce energy consumption. But it also limits the heating capacity.
If your system is running at 50% or so anyway, because it's not really cold outside, then nothing changes.