Water pressure + Flow temperature + Control time

[Tomasonx]

I have an VR 920 + VRC 700 / 5 + VR 50

1. In this picture

you have "Pression chaudiere 1.4 bar"

I can see this information on the VRC 700 app but not on home-assistant thomasgermain/home-assistant/homeassistant/components/vaillant/

Can you check this?

I will attach a print screen.

2. In the same print screen you can see "Flow temperature sensor" Can you add that too?

My print screen

[thomasgermain]

Hi,

Any error in the log ?

The entity id should be something like: sensor.vaillant_vc_be_246_5_3_pressure and sensor.vaillant_vc_be_246_5_3_temperature where vc_be_246_5_3 is the version of my boiler, so it may differ from your entities id.

Thomas

[Tomasonx]

No errors and I no similar ID

Sorry 1 error

2019-11-22 09:55:42 WARNING (Recorder) [homeassistant.components.recorder] Ended unfinished session (id=1 from 2019-11-07 01:11:23.587079)

[thomasgermain]

Hmm, it seems like it's coming from the data from the API (I guess they are not formatted like I received mine).

The warning is not related to the vaillant component.

May I ask you to run some python script to check how data are coming for you ? So I can check where the problem is. (I still have to prepare the script)

[Tomasonx]

OK, no problem

Can you see "Flow temperature sensor" also?

[Tomasonx]

And maybe "Control time and date" from the VRC 700 app on Settings / General Settings

Can you extract this value to see when the information was updated?

[thomasgermain]

And maybe "Control time and date" from the VRC 700 app on Settings / General Settings

Can you extract this value to see when the information was updated?

Is it what you're looking for ?

This is the time the boiler status was updated. This is a state attribute of the status of the boiler, but maybe you don't have the entity neither ?

[Tomasonx]

Yes I think this is it. And yes I do not have this.

[Tomasonx]

So you have VC BE 246/5-3 I have VUW BE 240/3-5

[thomasgermain]

So, here is the script: https://github.com/thomasgermain/pymultiMATIC/blob/issue9/data_from_vaillant.py

It will actually do 2 calls to get data I need to create missing entities

you can download it and run:

python3 data_from_vaillant.py username password

It will print some json data I would need to add support for your boiler. There is no real private data here, but you can remove your facility number in resourceLink

Thanks,

Thomas

[Tomasonx]

I run homeassistant on raspberrypi3 on docker

I put in

homeassistant/custom_components

the vaillant directory from here https://github.com/thomasgermain/home-assistant/homeassistant/components/vaillant/

so when i run data_from_vaillant.py I have the next error

Traceback (most recent call last): File "data_from_vaillant.py", line 4, in <module> from pymultimatic.api import ApiConnector, urls ModuleNotFoundError: No module named 'pymultimatic'

[thomasgermain]

Ah yeah sorry. You can actually run the script everywhere you want, but you need to install pymultimatic dependency before running the script:

sudo pip3 install pymultimatic

[Tomasonx]

And now:

Traceback (most recent call last): File "data_from_vaillant.py", line 4, in from pymultimatic.api import ApiConnector, urls File "/usr/local/lib/python3.7/dist-packages/pymultimatic/api/init.py", line 3, in from .error import ApiError File "/usr/local/lib/python3.7/dist-packages/pymultimatic/api/error.py", line 6, in import attr ModuleNotFoundError: No module named 'attr'

[Tomasonx]

I fix this and now I have

2019-11-00 00:00:00,000:INFO:Connector: No previous session found, will try to log in with username: ABC and smartphoneId: pymultiMATIC {'body': {'devices': [{'reports': [{'unit': '°C', 'name': 'Cylinder hot water temperature', 'value': 14.0, '_id': 'DomesticHotWaterTankTemperature', 'measurement_category': 'TEMPERATURE', 'associated_device_function': 'DHW'}], '_id': 'Control_DHW', 'name': 'Domestic hot water circuit'}, {'reports': [{'unit': 'bar', 'name': 'Water pressure', 'value': 1.3, '_id': 'WaterPressureSensor', 'measurement_category': 'PRESSURE', 'associated_device_function': 'HEATING'}], '_id': 'Control_SYS_MultiMatic', 'name': 'VRC 700/5'}, {'reports': [{'unit': '°C', 'name': 'Flow temperature sensor', 'value': 15.0, '_id': 'FlowTemperatureSensor', 'measurement_category': 'TEMPERATURE', 'associated_device_function': 'HEATING'}], '_id': 'Control_CC1', 'name': 'Heating circuit 1'}]}, 'meta': {'resourceState': [{'state': 'SYNCED', 'timestamp': 0, 'link': {'rel': 'child', 'resourceLink': '/facilities/ABC/livereport/v1/devices/Control_DHW/reports/DomesticHotWaterTankTemperature'}}, {'state': 'SYNCED', 'timestamp': 0, 'link': {'rel': 'child', 'resourceLink': '/facilities/ABC/livereport/v1/devices/Control_SYS_MultiMatic/reports/WaterPressureSensor'}}, {'state': 'SYNCED', 'timestamp': 0, 'link': {'rel': 'child', 'resourceLink': '/facilities/ABC/livereport/v1/devices/Control_CC1/reports/FlowTemperatureSensor'}}]}}

{'body': {}, 'meta': {'onlineStatus': {'status': 'ONLINE'}, 'firmwareUpdateStatus': {'status': 'UPDATE_NOT_PENDING'}, 'syncState': [{'state': 'SYNCED', 'timestamp': 0, 'link': {'rel': 'self', 'resourceLink': '/facilities/ABC/hvacstate/v1/overview'}}]}}

---

[thomasgermain]

So, I spot the problem. I'm currently busy with a fix for pymultimatic module. Then I will adapt vaillant component.

The thing is, you will be able to get temperature and pressure of the boiler only. Apparently your boiler is not able to provide hvac information (model of the boiler, current mode, last update, etc.)

[thomasgermain]

Could you try the last version of the component ?

You should be able to get pressure and temperature for the boiler with entity sensor.vaillant_boiler_pressure and sensor.vaillant_boiler_temperature.

Let me know if there is any issue

[Tomasonx]

It is working, no errors.

Of course do you know that I changed: timestamp: 0 /facilities/2xxxxxxxx = /facilities/ABC

And "Control time and date"?

[thomasgermain]

Cool great :)

Could you show me in the app what is the "Control time and date" ? From what I think, it's just the date and time of the boiler, this is not the last update. In the multimatic app, this field is editable.

I think I cannot provide you the last update since there is no hvac information from your boiler (I mean the body is empty).

[Tomasonx]

Go to Settings / General settings /

there you have "Time" (the actual time) and "Control time and date" (last update time) and of course after a few seconds Time = Control time and date

[thomasgermain]

ah you're from Belgium too :)

The time displayed here is actually the current time coming from the API. Since the mobile app is quite slow to update, than you can notice a gap between the current time and time displayed in the field.

Honestly, I cannot find any interest of displaying that in HA. What could be your use case ?

[Tomasonx]

Yes .be,

My idea was to have a value, 10 degree from outdoor sensor, and a time to know how old is that value.

So => 10 degree 6 minutes ago

[thomasgermain]

Here is what you can get with HA:

[Tomasonx]

I don't know how is this working.

How I understand 10 minutes from your print screen represents how long the temperature was 8.0 degree.

In my print screen I have 8 degree from 3:44 to 4:45 so 1 h

The problem is when (most often on weekends) I can't get data in the app, because the Vaillant server is down or something.

If I understand correctly you take the data from the Vaillant server and not directly from boiler / VR 920 / VRC 700 / VR 50 (like the app). If this is right will be interesting to know how old are data.

But, how this is working on HA is perfect enough, at least for me. You did a good job :)

[thomasgermain]

Thanks :)

You're right with your interpretation of how home assistant works.

And you're right, i'm getting data from server (like the application does). Meaning, if your HA instance doesn't have internet access, you won't get any data from vaillant server.

I think the problem is coming from your outdoor sensor. I already had some complaints about the accuracy of the data, but I can only read what is coming from vaillant server.

You can also change the scan_interval. By default it's 5 minutes, meaning HA will fetch data every 5 minutes. You can set like this:

vaillant:
  username: xxxx
  password: xxx
  scan_interval: 
    minutes: 1

Should I considered it close ?

Anyway, let me know if you have any errors/questions/suggestions :)

[Tomasonx]

No errors/questions/suggestions.

Thank you!