Irregular problems with my relative humidity value % units which are always solved with a restart?

Setup, Configuration and Use Items & Sitemaps
1

Hi openHAB-Community.
I have a problem since a long time which I just can’t solve.
I’m running openHAB 4.0.2 in a docker container on a Synology NAS DS 716+
The Homematic wall thermostat is connected through the CCU3 Firmware version 3.71.12.

I have read the value of the Homematic thermostat in the following item:

Number:Dimensionless    WT_Arbeitszimmer_Luftfeuchte                "Luftfeuchtigkeit WT Arbeitszimmer [%d %%]"                             <humidity>     (LuftfeuchteRelativMin,LuftfeuchteRelativMax,LuftfeuchteRelativ_Arbeitszimmer,WT_Arbeitszimmer)  ["Point"]      {channel="homematic:HmIPW-STH:ccu3:001D1A49905B3F:1#HUMIDITY", unit="%"}

If everything is correct the value is for example 64%.
After I run openhab for a while only some of my wall thermostat items show 0,64% instead of 64%.
This then crushes all my further calculations and so on.

Here the wrong version before a restart.

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In my widget the value is then empty:
image

My widget configuration looks like this:

                      - component: f7-col
                        config:
                          style:
                            font-size: 1rem
                        slots:
                          default:
                            - component: Label
                              config:
                                style:
                                  color: '= items["LuftfeuchteRelativ_"+loop.item.name.split("_")[1]].state > 60 ? "blue" : (items["LuftfeuchteRelativ_"+loop.item.name.split("_")[1]].state < 40 ? "brown" : "black")'
                                text: =items['LuftfeuchteRelativ_'+loop.item.name.split("_")[1]].displayState

After a restart of openhab everything is fine again for a while:

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image

Does anyone know the reason for this problem and has a bugfix for me?
Thank you so much for your effort!

2

I don’t know if metadata keys are case-sensitive. If they are, it should be unit rather than Unit. You could try changing it.

3

Thank you for your reply. My item configuration is file based and I have written the unit everywhere in lowercase letters. As you can see in my configuration example.
So I can’t optimize here and it can’t be the reason.
Any other ideas?

4

Sorry for misleading you. You are certainly right. It’s displayed as “Unit” in the UI when declared as “unit” in the .items file.

5

no worries. I’m happy about every idea which might point me to the cause of this problem. :slight_smile: