Vaillant eBUS hardware adapter (ebusd software) Thread

[Andre_K (André Kühne)]

Ah yes, you’re using yield power. I suggest calculating heat power directly from flow and return temperature and flow rate as the yield is incorrect during defrosts anyways. Have a look here:

Vaillant inbuilt monitoring vs MID meters

Here’s the mass flow rate heat transfer equation as mentioned by @Timbones as a home assistant template sensor. It needs to go into your configuration.yaml under the template section. Dividing by 3600 converts flow rate from liters/hour to liters/second. Adjust to your sensor names as needed. template: - sensor: - name: "heat_power" unique_id: "heat_power" unit_of_measurement: W state_class: measurement device_class: power state: > {% se…