How to write the VRV air conditioner controlled in the KNX system to HomeAssistant?

1

I have a set of central air conditioners that are connected to Daikin, but the control of the air conditioner is controlled by the KNX system. Now I want to add it to HomeAssistant, but I find that the mode of the air conditioner cannot be matched, and there is no wind speed. I don’t know how to set it.
Air conditioning mode: cooling, heating, air supply, dehumidification, automatic
Air conditioner fan speed: low speed, medium speed, high speed, automatic
There are also some central fresh air dehumidifiers that cannot be returned.

Is there a way to solve this problem please? If so what should be done? thanks

2

Hi :wave:!

The easy way to solve this is to use multiple entities. Like a fan or number for wind speed and select for the mode. You can combine these entities in UI via some custom card then.

The more involved way would be to add support to xknx and the HA KNX Integration.

4

If programming from the underlying Xknx, can it be supported? Are there any experts who can write it?

5

If you can’t do it yourself you may file an issue at the xknx repository describing exactly what device / gateway and which DPTs are used / needed for which functionality. Then maybe someone interested will pick it up.
There is even already a feature request for fan modes Feature request: Add Fan mode and Swing mode to climate KNX devices · Issue #466 · XKNX/xknx · GitHub

6

Okay, I was thinking it would be better if HomeAssistant and KNX supported me perfectly. I used NODE-RED to do a device access to the KNX system before. The data type is like this, please see the following figure:
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7

I can’t make much of that. DPT 6 is signed integer - which doesn’t make much sense for a mode switch. Also I have no idea about NodeRed so don’t really see what it is supposed to do.

Maybe you can make some logic to translate it to DPT 20.105 “controller_mode” - which would be supported by HA.

8

ok thanks for your reply :pray: