Thanks, found confirmed pinouts of the CN_WIRED port here and it does list the 5th pin (not used by the awm61a01 dongle) as 12V
So I guess I’ll need to add a buck converter to drop it to 5V?
yes. Assuming the CN_WIRED is similar to S21, it is known that when there is a +5V pin it is commonly not enough to run a ESP connected, indeed all of us with custom module used a step down to take the voltage to 5V (i used a mini560)
99% you’ll not need a logic shifter: if your split does not accept 3.3V level in input, you can just toggle to open drain output and it SHOULD work 
Hi, i added the mini 560 to the d1 mini now using the 12v pin
But when i turned on the ac switch, the esp just blinks once.
Doesn’t look like it’s booting up properly, anything i should look into?
Some updates, apparently the expected 12v pin was actually 5v pin and it was adequate to power the d1 mini without any buck converters.
Got faikin running now, but I’m just getting ‘system offline’. Changing any setting from the remote doesn’t seem to reflect that in the web ui.
I’ve enabled some option in the advanced settings here, but how do I view the logs?
First of all hello and thank you for this great project!
Has anyone tried with new FTXC71D or FTXC50D models?
I’ve checked and looks like I need to find some s21 connector, it seems to be the connector dedicated to the “official” wall-mounted control right?
Any other indicators to check if it-fits/its compatible on these new models?
If you pull the side off and find an S21 port, you should be fine. That’s where the official wifi device connects.
I don’t see those in the tested list, but they may work:
Hi all, I’ve got two of these Airzone units hooked up, that I can’t integrate into HA (thanks Daikin); and I’d like to just branch off the existing cable to the Faikin board. There was a post saying that you could run both - I think I could just fork the existing cable?
However, I can’t find pinouts for the Airzone unit to confirm which is which wire (Tx vs Rx). The existing unit is an Airzone azai6wscdka.
Here’s a pic of the current leads:
Anyone know which lead is which (I assume black is gnd, and red is 12v, and the green/blue are tx/rx? but not sure if that’s right or what order)?
Thanks in advance!
Its not about the lead, but what the lead connects to. Look at how it attaches to the board.
Also, to be honest, you don’t need the OEM ones AT ALL after trying the Faikin
There was a post saying that you could run both - I think I could just fork the existing cable?
It might work - I personally would not try it.
Got faikin running now, but I’m just getting ‘system offline’. Changing any setting from the remote doesn’t seem to reflect that in the web ui.
This strongly suggests that you only have power to it, but the communication wires are not making contact.
I’ve swapped the tx/rx cables and it’s detected the CN_WIRED protocol but now I do have this issue where the ac controls don’t always work
Anything else I need to configure in the advanced setting?
Yes, I checked everything I could in this topic and the GitHub documentation and these new models FTXCxxD are not listed. I’ll ask my distributor if he can check fo the connector in one of their units.
Thank you CN_WIRED is the term I was looking for!
Faikin looks listed to be delivered to my country, looks a better and long-term solution rather than these 5-years-long cloud-“solutions” cycles.
FWIW, I took a look at the manual for the Airzone Wifi device in your photo:
and it looks like yours is hooked up to the P1P2 port - not the S21 port. So you might be able to use both? I am not sure why you would want to do this though.
I would check that your system has a S21, X50A or X35A connector to use the Faikin with. Looking through the manual I linked, it appears that the P1P2 port that you have (based on your photo) provides power, and the X35A port that you PROBABLY have, should work with the Faikin device instead of the S21 port. Though, if you have the S21 port, I would use that.
Thanks Mr_Flibble:)
I did take a deeper look at the board in the air handler, it does not have an S21 port. It does have an X35 port, but looking at the docs in the wiring diagrams (here: http://www.daikinac.com/content/index.php/assets/DOC/EngineeringManuals/EM-FXTQ-TAVJUA.pdf) - it indicates that X35 is a 16v power supply header?? However, that currently IS going to the current wifi adapter (blue/green wires), along with P1/P2 (red/black). Looking at the wiring diagram in the unit itself, it does not indicate that X35 is a power supply header though.
So is the P1/P2 just the tx/rx (and doesn’t matter which?) and the X35 wires would be power to the Faikin?
I’m perfectly happy to not run both at once and just get rid of the Airzone unit if I can get this working:)
Don’t quote me on this, because I am not certain by any means but I think that the X35 is the data port and the P1 and P2 are the power lines.
Sounds about right, in the github there’s x50a for the tx/rx line but yours goes to P1/P2 and x35a for power.
If you don’t have a faikin stick yet
For testing you could connect an esp32 with faikin flashed + buck converter (mini 560)
Red & Black → mini 560 → 5v & Gnd (esp32)
Green/Blue → tx/rx esp32 (try swapping the cable if the ac status still not online)
hello i have a daikin unit with CN-wired port, are you able to get it working, if ues, please support me for getting mine works,
Yes, install the main release from esp8266 faikin github and connect the wires to the cn_wir port like this
Thanks, this gives me hope that my CN_Wired AC can work. I pretty new to this. I guess you are referring to the below project. If yes, do i need to flash faikin-8266.bin only or bootloader is also required? if yes, how to do this? I use esp flasher for flashing bin files to esp8266. I m on MS windows, esptool works in MS DOS?
You’ll need those files for serial flashing but only the faikin-8266.bin for ota update. I assume you’re using windows esptool so just run this command
esptool -b 460800 --after hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 8MB 0x8000 partition-table.bin 0xd000 ota_data_initial.bin 0x0 bootloader.bin 0x10000 Faikin-8266.bin
After setting up faikin, disable ota update. There’s a bug that keeps resetting the faikin (for now)
Your post here gave me the courage to do this myself. Started off with some jumper wires, but they don’t hold on very well so I am currently looking for the right connector. It seems like my only option is this for the S21 port:
I was unable to find anything JST-EH on Ebay or amazon, short of this kit.
I tried 3D printing a clip to hold the jumper wires together, but it’s very finicky when trying to keep everything together when putting the exterior plastic case back on.
FWIW I have the LVJU units.