Midea VRF Support

[manunited10]

Device type and model (or SN)

WDC3-120T

The detail description of new feature

[Transferred from georgezhao2010/midea_ac_lan]

We recently installed a Midea MDV-V200WN1 system, which includes one outdoor unit and several indoor units (IDU). Additionally, we added a Wi-Fi wall controller (WDC3-120T), connected to one of the indoor units. The indoor units (IDUs) are linked to each other in a chain configuration (wifi controller is connected to IDU1, IDU1 is connected to IDU2, IDU2 is connected to IDU3 and so on; See 2nd figure below).

I successfully added the Wi-Fi controller to the SmartHome app, and it works fine. However, I dislike relying on online solutions, and I haven’t been able to connect it to my Home Assistant. I tried using this repository, but it doesn’t work with the Wi-Fi controller. In fact, none of its ports appear to be open.

Any advice would be greatly appreciated. I've attached some photos for reference.

Wifi controller:

Wifi controller wiring to IDUs:

Indoor and outdoor unit example:

SmartHome app:

Thank you in advance.

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Title: Midea VRF Support

[wuwentao]

@manunited10
First of all, you should install currrent integration and discover your device, confirm the result in debug log and the discover result. if your device don't response to discover message, we can do nothing for it with this integration, as we don't know your device communication protocol.
if you device can response to discover message, we can check the detail and supported info with your device SN.

[manunited10]

Thank you for your quick response.
Unfortunately, as of my tries, this integration is not able to do anything. I think this integration is trying to connect to port 6xxx (I forgot the exact port number) but that wall controller has no open port. I did some sniffing once, and looks like it opens a port (probably random) and establishes a connection to the remote. I have to verify what I said though.

[wuwentao]

@manunited10 so we can confirm your device NOT support current protocol.
we can't use this integration for your device, as it using a unknown device protocol, we can't control or decode it.

if you want to control or communicate with your device, you should have a valid device protocol to do it, this is the root cause.

I will close this issue as current integration NOT support it. sorry

anyway, if there is any new progress and updates, we still can add comments in a closed issue.
thanks!