Flow rate sensors same values?

[w4iq3]

Below 2 sensor entities are showing exactly the same value.

• sensor.luxtronik_######_####_heat_source_flow_rate has attribute: 0173 calculations.ID_WEB_Durchfluss_WQ
• sensor.luxtronik_######_####_heat_amount_flow_rate has attribute: 0155 calculations.ID_WEB_WMZ_Durchfluss

WQ = is the brine/water circuit if I'm correct. What is WMZ, and why are both identical? I was hoping to have the floor heating (HUP?) flow rate as well

[Mehli12]

Hi,

for me, they don't show exactly the same.
Sometimes they are a bit different. (approx. 100 l/min)
One is the flow rate out of the heat pumpe (heating circuit). The other, as u said, the brine/ water.

[w4iq3]

I would expect the heating pump would be something with HUP, not WMZ. And isn't it too much of a coincidence the values for both circuits are nearly identical?

[Mehli12]

I would expect the heating pump would be something with HUP, not WMZ. And isn't it too much of a coincidence the values for both circuits are nearly identical?

WMZ, from my understanding, means just "Wärmemengenzähler" naming from Luxtronik is not quite good. Actually I guess it is a good sign that both have nearly the same value. This is what the Luxtronik try to achieve. It's just my guess...

[w4iq3]

Still not sure about this.

In heatpump web interface: VBO is on 0%, HUP 65%. Flow shows 900L/hour.

In HA flow for the 2 sensors of WQ and WMZ show 900L as well:

How can this be if VBO is on 0%?

[Mehli12]

Yeah. Okay. I see. It looks like this is not okay.
I mean I don't have "VBO" in my web interface. For me it's called "Ventil.-BOSUP" but actually I don't have a solution for you. Sry.