Ventilation system in single-family house without effect = planning error?

Is it always on full power then? As far as I know, the Zehnder is modulating. It ran briefly at 50W today and is now off again.

This is today's consumption curve... So far 8.113 kWh o_O
Already 65.897 kWh in the current week... Only at this one socket where the ventilation system is connected, which corresponds to about €18.50 in electricity costs in one week just from the controlled residential ventilation.

Of course, control is also based on demand here, and if the demand is "full throttle," then that's just how it is.

Of course, control is also applied here according to demand, and if the demand is "full throttle," then that's just how it is.

Although here, of course, one cannot necessarily be sure whether some settings were incorrectly or not adjusted at all...

As far as I know, you always have to do it yourself because it usually always runs on the factory settings.

As far as I know, you always have to do it yourself because it usually runs on factory settings.

I suspected that ;-)

I hope the Wolf field service can say something about it. I have put together a list of questions/problems:
- Air quality feels insufficient, but according to the CO2 meter currently okay -> problem possibly only in summer and maybe not even caused by the controlled residential ventilation!? Incorrectly positioned/sized pipes/plate valves?
- Area around plate valves dirty -> possibly static charge caused by too high airflows? Wrong filters used? (I still have some spare ones)
- Unit clearly audible in the bedrooms -> too high “normal exchange rate” of 190 m³/h?
- Power consumption at subzero temperatures around 800-900 watts -> normal?