KNX Sensor component not working -> Error: ConversionError description="invalid value type"

Configuration
1

I’m trying to migrate from OpenHAB to Home Assistant, but I’m having problems to migrate all my KNX items.

My sensor.yaml file looks like:

- platform: knx
  name: 'Heizung KG Wartung Stellantriebe'
  address: '2/0/4'

The error I get is the following:

Error while setting up platform knx
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/homeassistant/helpers/entity_platform.py", line 126, in _async_setup_platform
    SLOW_SETUP_MAX_WAIT, loop=hass.loop)
  File "/usr/local/lib/python3.7/asyncio/tasks.py", line 416, in wait_for
    return fut.result()
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/knx/sensor.py", line 26, in async_setup_platform
    async_add_entities_config(hass, config, async_add_entities)
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/knx/sensor.py", line 47, in 
async_add_entities_config
  value_type=config.get(CONF_TYPE))
  File "/usr/local/lib/python3.7/site-packages/xknx/devices/sensor.py", line 49, in __init__
    value_type=value_type)
  File "/usr/local/lib/python3.7/site-packages/xknx/devices/remote_value_sensor.py", line 71, in __init__
    raise ConversionError("invalid value type", value_type=value_type, device_name=device_name)
xknx.exceptions.exception.ConversionError: <ConversionError description="invalid value type" device_name="Heizung KG Wartung Stellantriebe" value_type="None"/>

According to the component the type is just optional: https://www.home-assistant.io/components/sensor.knx/ and I can’t provide a type as this KNX sensor type is not available (DPT 2.001).

Any ideas why I get this error?

Thanks Michel

2

Try the name without quotes and spaces:

  • platform: knx
    name: Heizung_KG_Wartung_Stellantriebe
    address: ‘2/0/4’
3

Hi Jona,

I just tested as you suggested, but still get the same error:
xknx.exceptions.exception.ConversionError: <ConversionError description="invalid value type" device_name="Heizung_KG_Wartung_Stellantriebe" value_type="None"/>

4

What kind of sensor are you using?
If it is a binary sensor, you have to use the binary sensor category (you can´t use it in the sensor.yaml file). Yo must use it in binary_sensor.yaml file or put the code inside or use it directly in the configuration.yaml file.
Example:

binary_sensor:
  - platform: knx
    name: Heizung_KG_Wartung_Stellantriebe
    address: ‘2/0/4’

If it is a value sensor (not binary), you can use it in the sensor.yaml, but you must specify the type.
Example:

  - platform: knx
    name: Heizung_KG_Wartung_Stellantriebe
    address: '2/0/4'
    type: 'temperature'

You can find the diferent type of sensors here: https://www.home-assistant.io/components/sensor.knx

5

Hi,
I already had a look at the supported knx types. The problem is, that this KNX type (DPT 2.001 - 2 bit) is not supported. So, I’m looking for a workaround to get my heating service activated.
KNX documentation about DPT 2.001 is saying:

These datapoint types are intended for applications offering a priority control that 
has precedence over the normal (manual) operation. In other words, if an actuator 
is switched via its priority datapoint, switching via its usual DPT 1.xxx group objects 
is disabled. Switching with priority is ensured via 2-bit datapoint types. The interaction 
between the 2 and the 1 bit datapoint functions according to the  underneath diagram:

image

–> source

Regards,
Michel

6

In this case, the solution can be to convert the 2-bits in 1-bit. Some knx devices has this functionality.

7

Hi Joca,
wondering how this would work?
Let’ assume I have a light with a switch (1bit) address. Besides I have my priority control switch.

  1. Scenario: I want to disable the priority and let the switch decide how the light status is. Having just 1 bit we would need to set the priority control to 0.
  2. Scenario: I want to enable the priority control and have the light off, so the actor ignores the switch status. How can this be achieved if I only have two states in the priority control?

Regards,
Michel

8

Hi Michel,

Maybe you can do the same but differently (without priority).

I think I have something similar with my KNX motion sensors. The sensors have a lock function (1bit), where I choose to lock with “0”. The same blocking address I put on the actuator output, so when I send the blocking order to the detector it also turns off the light.

I hope this helps.

Regards,
Jorge