Wie hier diskutiert ist es möglich, die über Solarthermie geerntete Energie aus der Vorlauf-/Rücklauftemperatur und dem Solardurchfluss zu errechnen.

Ich mache das derzeit so

sensor:     
  - platform: template
    sensors:
      solar_heat_power: 
        friendly_name: Solar Power
        #Spezifische Wärmekapazität 4,187 J/(g*K), https://www.mikrocontroller.net/topic/209838
        #1000g/liter, 3600 s/h -> 4.19*1000/3600 = 1.163
        value_template: "{{( (states('sensor.s5_solar_vl_sek') | float - states('sensor.s6_solar_rl_sek') | float) * states('sensor.solar_durchfluss') | float) * (1.16305555556) | round(2)}}"
        unit_of_measurement: W

Anders als bei dir & in der Solvis-Doku habe ich dabei die Einheit des SolarDurchfluss (33040) mit ltr/h festgelegt.
Die an der Heizung & in HA angezeigten Werte für Durchfluss und Energie stimmen dann zumindest bei mir überein.
Wäre cool, wenn mal jemand checken könnte, ob das nur bei meiner Anlage so ist. ;-)

Version of the plugin
1.0.1

Home-Assistant Version
2024.7.0b5

Enviroment (Docker, HAOS, ...)
HAOS

Describe the bug
Some sensors are being pulled in inverted from the value being reported on the Solvis Control unit.
For example:

The value here is reported as nearly negative 70°C. In the SC unit directly the value is correctly reported at nearly positive 70°C.

The sensor of the example here is the "lower" ("unten") Pufferspeicher-Sensor. The "upper" ("oben") Sensor is correctly reporting the positive temperature value - as expected.

Another example is the number of restarts of the heater.

(disregard the high value - this is a problem with my heater which is being investigated by Solvis technical support.)

To Reproduce
Not sure how to reproduce. This is simply how the sensor's value is being displayed for me...

Expected behavior
I would expect the integration to show the values as reported by the SC unit.

Screenshots
(same screenshot as above)

The heating is already implementet via modbus, so it can't be a wrong modbusconfig.

In my opinion the scrennshots say everything, if you need more info let me know.

Latest version of solvis control is installed.
HomeAssistant-Version latest is installed running on a PI4
Solvis VC3 is connected via LAN and communicates properly with Solvis portal. It is connected via a switch with my Fritzbox.
IP Address and port 502 is set properly in the configuration of Solvis Control

Nevertheless I get a failed to connect after reboot of heating system or Homeassistant every time.

Any idea where to search for the root cause?

This software works great in my installation. I have installed a SolvisMax, SC-3, and a Lea Premium heat pump.

All values fron SolvisMax are reported, this is cool.

Would it be possible to show also values from the Lea Premium heat pump? Unfortunately I did not find any Modbus documentation for these values.

I would be interested in the following values:

• elektrische Energie Wärmepumpe
• Wärmemenge Wärmepumpe
• Startvorgänge Wärmepumpe
• Leistung Wärmepumpe
• Laufzeit Wärmepumpe
• Wärmemenge Heizstab
• Startvorgänge Heizstab
• Laufzeit Heizstab

Hat hier noch jemand Probleme mit der aktuellen Version der SC3 und modbus? Es scheint fast so als ob Solvis die Schnittstelle geschlossen hat

Add support for custom sensors, such as temperature sensors, for integration with Solvis systems.

In our case, we use our own sensors in Home Assistant rather than the thermostats provided by Solvis.