OpenHAB 4.1.1, Homematic CCU2 and HM-TC-IT-WM-W-EU Thermostat: Unable to set temperature

[Flowdalic]

^{Cross post from https://community.openhab.org/t/openhab-4-1-1-homematic-ccu2-and-hm-tc-it-wm-w-eu-thermostat-unable-to-set-temperature/154239}

I have a Homematic CCU2 with a HM-TC-IT-WM-W-EU thermostat. Using the Google Assistant binding, I configured the thermostat group as follows:

Semantic Class: RadiotorControl
Metadata: Google Assistant:
  Thermostat
  Thermostat modes: on=Auto mode:Manu mode:Holiday mode
  Thermostat temperature range: 17,24
Items:
  Temperature
    Metadata: Google Assistant: thermostatTemperatureAmbient
  Set Temperature
    Semantic Class: Setpoint
    Semantic Property: Temperature
    Metadata
      Google Assistant: thermostatTemperatureSetpoint
  Control Mode
    Semantic Class: Point (should may be "Control"?)
    Metdata:
      Google Assistant: thermostatMode

However, in Google Home only presents the thermostat as read-only, i.e., there is no slider:

while it should be looking like

^{From https://community.openhab.org/t/google-assistant-thermostat-setpoint-not-working/96207/6?u=fschmaus}

Note that

• I had to create an extra item with humidity as integer. The Homematic devices returns it as float, but Google Assistants expects an integer in the range 0-100
• I am not sure of the mode setting when it comes to Homematic thermostats. They have three modes: "Auto mode", "Manu mode", "Holiday mode", which can not be really mapped to the modes Google's API expects: https://developers.home.google.com/cloud-to-cloud/traits/temperaturesetting.html They also have additional boolean-like modes like "Comfort Mode" and "Lowering Mode".

[michikrug]

The one thing that seems a bit off is your mode configuration. Currently, you map all the values to the single one called "on". You may can try to add at least the heat mode too, e.g.:

"on=Manu mode,heat=Auto mode,off=Holiday mode"

(just an example)

Btw. are you sure that your mode item actually returns values like "Manu mode"?

You also have to make sure to be in the heat mode to adjust the temperature. In the on, off or eco mode, I believe manual adjustments are not possible. At least it behaves like that in my setup.

[Flowdalic]

Thanks for your reply. That is much appreciated.

"on=Manu mode,heat=Auto mode,off=Holiday mode"

Just to double check, I assume the double quotes are not necessary when entering this into the "Thermostat modes" field?

Btw. are you sure that your mode item actually returns values like "Manu mode"?

That is one String shown in the webinterface of the "Control Mode" item. I guess it comes from

https://github.com/openhab/openhab-addons/blob/3039f1fe9bcdded974431a4b919b58776ad1a353/bundles/org.openhab.binding.homematic/src/main/resources/homematic/generated-descriptions.properties#L586-L589

I am currently trying

heat=Auto mode:Manu mode,off=Holiday mode,on=Boost function

which I think is the correct configuration for Homematic thermostats. Will report back.

[Flowdalic]

After looking more at the homematic binding source, especially discovering that there is also a generated-descriptions_de.properties file, it become obvious that "Manu mode" is just the localized String and that the real mode String is MANU-MODE. Not sure how I should have discovered that without reading the source. In any case, it seems like

heat=AUTO-MODE:MANU-MODE,off=PARTY-MODE,on=BOOST-MODE

did the trick.

Thanks again :)

[michikrug]

Just to double check, I assume the double quotes are not necessary when entering this into the "Thermostat modes" field?

Yes, no quotes when entering this in the field

I am currently trying

heat=Auto mode:Manu mode,off=Holiday mode,on=Boost function

which I think is the correct configuration for Homematic thermostats. Will report back.

when I read the homematic properties right, it should probably be:

heat=AUTO-MODE:MANU-MODE,off=PARTY-MODE,on=BOOST-MODE

---

Oh, was too late..

Glad you got it working