[I am creating this topic to ask from everyone else who has similar system and could help understanding the system and integrate it with HA]
We recently installed a Midea VRF (Variable Refrigerant Flow) air conditioner (model is MDV-V200WN1), which includes one outdoor unit (ODU) and several indoor units (IDUs). 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 daisy 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 (I think formerly known as MSmartHome / MSmartLife), and it works fine-ish.
However, I dislike relying on online solutions, and I haven’t been able to connect it to my Home Assistant.
Any advice would be greatly appreciated. I’ve attached some photos for reference.
I raised a question in media-ac-lan and no help there. In fact, I scanned the wifi controller’s ports and it looks like it’s not exposing the port that midea-ac-lan is expecting.
I Also looked at Midea-branded-ACs thread, and I don’t think it could directly help this system.
I will add more of my findings later on.
Hopefully this topic could attract more people to find a proper solution.
Here are some photos:
Wifi Controller:
Wifi Controller Wiring:
(Note that L1 is connected to the wall controller. We don’t have a 2nd wall controller, so L2 is not used. L3 is connected from first indoor unit (IDU) to 2nd IDU, and 2nd to third and so on.)
IDU and ODU example:
SmartHome app:
