Unable to active load or change minimum temperature for boiler - Vaillant Geotherm 82/3

[realilla]

Hey Guys,
I've done tons of research and tried everything gemini offered me, but the problem is still there: I can't active 1x load via ebus on Homeassistant.
We're 6 persons in our house and in the morning we're short on hot water when everybody wants to have a shower. We have no timer activated, so the pump is generating hot water 24/7. Minimum temperature ist set to 40 degrees C. Sometimes the boiler temperature ist at 52° at 6 o clock in the morning, then everything is fine, but sometimes it's at 43°, and thats too low (for 6 persons). I don't want to change the minimum temperate gernerally, because we don't need it all day...

My idea was to start a singe load in the morning, before the family gets up, to have the boiler temperature at 53° every morning .

I used the terminal in Homeassistant to make that work, but It's still not working. I have to admit i'm new to all that stuff and not an expert.

I tried
ebusctl write -c hwc Load on

and
ebusctl write -c hwc Load 1
and it says done in both trys, but nothing happens.

So i tried to change the temperature with
ebusctl write -c hwc SetTempDesired 65
and can see in HA, that the change is done to SetTempDesired, but the pump doesn't start.

Then gemini advised me to try this
ebusctl write -c hwc OperatingMode on
ebusctl write -c hwc SetTempDesired 65
ebusctl write -c hwc Load 1
but still no starting.

I can see that ebusd hwc StorageTempDesiredStart ist at 40° (adjustable at the panel of the Geotherm), and ebusd hwc StorageTempDesiredStop at 45°. My thought was to change these values by a script if a manual load doesn't work, but i can't write these values...

I've no idea how to go on, can you please help me? What can i do?

[john30]

on my env the trick is to send the Load to the mixer, not the heater, i.e. use ebusctl w -c mc load on (funny enough to do it that way ;) )

[realilla]

That was the missing part!! It now works! Thank you very much :-)