Hello!
I have a 3-phase water boiler which energy consumption I measure using Shelly 3EM. I am able to measure individual phases in the energy dashboard, but whenever I use a helper to sum the 3 phases together, it gives an error when adding the total-sensor to the energy dashboard:
“Unexpected device class”
I just add the 3 energy values of the 3EM with SUM in the helper section.
I find it hard to find the helper configuration in the yaml files to check or modify the device class.
Anyone else having the same problem?
I also measure my total consumption from the grid using the same 3-phase 3EM. In the energy dashboard, adding the 3 phases separately adds them together and works, but again it’s impossible to add a “total” energy sum from helper sum-sensor.
Thank you tom,
It seems that the summing in the helper is not keeping the device class in the measurement, hence rendering it useless in energy panel. I was able to manually add a class to the summed-up helper- and the unexpected device error is gone. Anyhow, the energy panel is still compaining “last_reset is missing”. Do I need to further modify the helper somehow?