Error in electrical energy measurement for Stiebel Eltron heat pump

Describe the bug

The electrical energy consumption of a Stiebel Eltron heat pump is reported differently by the ISG Connect compared to EVCC.

• Stiebel Eltron web interface: 3.17 kWh

• EVCC: 8.1 kWh

The energy figure calculated by EVCC is significantly too high and implausible.

The electrical energy can be read correctly directly via Homeassistant using Modbus TCP.

Steps to reproduce

always occurs

Configuration details

-

Log details

will follow

What type of operating system or environment does evcc run on?

Linux

External automation

• I have made sure that no external automation like HomeAssistant or Node-RED is active or accessing any of the mentioned devices when this issue occurs.

Nightly build

• I have verified that the issue is reproducible with the latest nightly build

Version

0.316.0