[Bug]: Office Volatile organic compounds parts, aggregate sensor unavailable

[myevit]

System Health details

I have airthing wave that have VOC sensor but in agregate sensor VOC is unavailable. The rest or the readings are there.
I think there is an issue in the aggregate logic

[jseidl]

Can you give some more information? Can you post a screenshot of the aggregate state and attributes? Fresh logs would also be helpful.

[myevit]

I think this is it. Let me know how else I can help.

Logger: homeassistant.components.group.sensor
Source: components/group/sensor.py:427
integration: Group (documentation, issues)
First occurred: 08:38:49 (2 occurrences)
Last logged: 08:38:49

Unable to use state. Only entities with correct unit of measurement is supported, entity sensor.view_plus_vocs, value 200.0 with device class volatile_organic_compounds_parts and unit of measurement ppb excluded from calculation in sensor.magic_areas_aggregates_bedroom_aggregate_volatile_organic_compounds_parts
Unable to use state. Only entities with correct unit of measurement is supported, entity sensor.wave_plus_vocs, value 236.0 with device class volatile_organic_compounds_parts and unit of measurement ppb excluded from calculation in sensor.magic_areas_aggregates_office_aggregate_volatile_organic_compounds_parts

[jseidl]

Interesting. Thanks for adding the information.

Looks like HA is mad about the device class and unit of measurement (or the value 🤷‍♂).

Can you use the Helpers area and manually create a group with that VOC sensor and report results? I'm trying to understand if this is a general group issue or on my end.

[myevit]

you're right. HA issue. It's complaining but working, I assume...

[jseidl]

This is really weird. It's the correct unit of measurement and the correct device class, the value is a number, I'm not sure why it's mad about it.

I'll keep looking.

[jseidl]

Look like it's an implementation miss. The code with the valid units is here https://github.com/home-assistant/core/blob/dev/homeassistant/util/unit_conversion.py#L660-L673.

It looks like it only had PERCENTAGE initially and whoever added ppb/ppm didn't added those as valid units

[andrebcunha]

There’s a problem in multiplier factor in this sensor. The aggregated sensor has some divider that wrongly dimensions the original number. Check screenshot for an example of an aggregated sensor of just one source.

[jseidl]

The voc parts unit conversion is currently behaving weirdly on HA.