The information is correctly sent to my general dashboard, I have the electricity consumption of my underfloor heating and the consumption of my thermodynamic hot water tank.
For each of them I have 3 meters: daily, weekly, yearly.
I think great, I’ll be able to add this data as an individual device in my energy page. And that’s where it gets complicated…
My energy page is correct when I do not add my heat pump and my hot water tank
But now if I add the daily sensors as a consumption source in my energy page, it doesn’t work (I also tried with the weekly and the annual. The result is identical). On this capture, the same day. We can see that it is not consistent, at 4pm I have a little more than 1kWh of consumption, while my general consumption histogram indicates 0.26kWh (I have a Shelly EM with ampermetric clamp to follow my general consumption). I also have negative values.
I wanted to put a capture but I am limited to 1 image per post as a new member on the forum.
My entire installation is single-phase.
Yes, my Shelly has a clamp on the general arrival in my electrical panel. And a clamp on the phase of the power supply to my pool.
Could it be that Onecta updates values when full 1kWh has been consumed (after several hours of consuming 0.x kWh)? And Shelly is updating (almost) continuously, so energy consumed by heat-pump is spread over these hours. This could have similar result.
Basically what I’m saying is that HA is showing the data it receives from sensors correctly. Issue is with measuring.
What you could do is move second CT of Shelly EM from pool to measure heat-pump (temporarily?) and verify that their daily total is same (you could use Utility Meter helper to get daily consumption from Shelly).
If the daily sums match then you have confirmed the case (i.e. Shelly measuring 0,33 kWh for 3 hours and then heat-pump adding 1 kWh on last hour), and there is nothing much else you can do about it (Other than getting additional Shelly to measure correclty).
Yes I wanted to try with one of the Shelly clamps.
However, my heat pump consumes on 2 circuit breakers of my panel. Because I have an outdoor module (which captures the air) and an indoor module. The 2 are not on the same circuit breaker.
The indoor module must consume 90% of the total consumption. But I would still have a difference.
I have also 2 modules, both on 3-phase, but htat should not matter. For mine, most of the consumption is by outdoor module (as compressor is there). Indoor module has circulation pump (low consumption) and backup heaters (which rarely work), but I guess it depends on the model.
