Hello,
I just bought a comfee MPPH-08CRN7.
I already have Problems with opening the ac.
Any advise on this?
I removed All screws, but with no luck.
I guess the Controll unit is some where closed to the Display and Buttons.
But I dont any way to get there without completly breaking the plastic.
Awesome project! So if I understand it correctly I should buy this:
https://nl.aliexpress.com/item/1005008528226032.html
(Both the adaptor and the ESP-01)
And then program it via my USB serial adaptor. But my question is, where do I get the cable to connect it to the air conditioner? Especially the plug. Any idea how to find this on aliexpress? Thanks!
EDIT Ah it seems 4 regular dupont cables fit, right?
do you know if this works with their central systems such as CENTRAL-60-HP-230B00-O ? I am trying to make this system work without thermostats (only temp/rh probes and using 24v relays). I have to switch system design because of changes to refrigerant requirements and availability. I like this Mr. Cool package but it doesn’t allow me to wire for fan speed because they are either controlled by the controller (basically their branded thermostat) OR by dip switches. I have two ESPhome nodes running controls on rheem hot water tanks and 1 other node that connects to probes via rs485 modbus. I would need to get another node to hook this up if this yaml/package would work with this mr. cool unit.
Hi Steve,
I have a similar (different size, same control) vaillant fan coil.
Did you make it work? I have been doing some research, and see that there are some out of the box solutions for this equipment, from a commercial brand called Airzone. From their compatibility list, they advise to use their device with model number AZAI6WSCGM1. Anyone can check compatibilities here:
https://www.airzonecontrol.com/ib/en/projects/web-tools/compatibilities/aidoo/
However, this is quite expensive, compared to other ESP32/8266 solutions, although the HA integration seems quite user friendly.
I’d rather not spend so much money. Did you find a DIY solution?
Thanks and regards.
Hey there,
I just wanted to report that the Comfee Smart Cool 7000-1 also has the typical EU-SK 105 Wi-Fi dongle and it can easily be replaced without damaging any warranty seal. I did not yet replace it and test it with ESPHome, as I don’t have the replacement dongle just yet. But I wanted to already post some instructions on how to disassemble the AC, as it was recently on sale at LIDL (a German/European discounter) for a great price and thought others will also search for this 
I’ll also report back as soon as I’ve built myself the replacement dongle.
First, remove these screws on the back side:
Then these two on both sides:
Now you can remove the whole back cover, just use a little force and wiggle to get it off.
You would think that you now just need to loosen two screws and remove the top lid, but I don’t recommend that as the top lid is clipped into the front lid multiple times and you would need a lot of force and risk breaking it.
So let’s continue like this:
Remove those two screws on both sides:
And finally this one on the very bottom on the front side:
Now you can remove the front lid again with some wiggling and you’ll see the dongle sitting there in the middle of the top lid:
Hope that already helps!
Later,
Andy!
i need a solution for my innovair mini split im so ready to toss it
Ok I managed to flash everything and when I open the IP address of the dongle I can control the AC, so that works, hallelujah Thanks to everyone involved it was actually quite easy following the instruction in the first post (although maybe @aceindy could update the yaml example file since a few things needed corrections to make it compatible with current ESPHOME builder).
But my question is, how to integrate this into HA? That’s really missing in the first post. Which integration to use? I tried: GitHub - georgezhao2010/midea_ac_lan: Auto-configure and then control your Midea M-Smart devices (Air conditioner, Fan, Water heater, Washer, etc) via local area network.
But the auto discovery doesn’t find the module and when trying to configure it manually it asks a bunch of info that I don’t know … So any help here would be great appreciated!!
EDIT Found it!! It’s super simple, you don’t need to add any integration. You just to go the ESPhome integration and there you should see the device and you can add it. @aceindy probably a good idea to add this to the first post, although I’m sure it’s obvious to the more experienced HA users this really had me busy figuring out LOL. Anyway a big thanks to all involved!!!
I had another ESP01 lying around but no more adapter boards. Then I remembered I had one of these level shifters: Amazon.com
However I can’t get it to work and Grok seems to think it won’t work at all. Grok insist that you need to supply an external power source to the ESP01.
So what I tried: on the HV side I connected TX, RX to H1 and H2 on the AC and then GND and HV to the AC too. And then on the LV side I connected LV and GND to the ESP01 (and TX to L2 and RX to L1). However the module doesnt seem to power. So is Grok correct that it can’t work this way?
Getting used in this topic to answering my own questions, LOL. But yeah turns out Grok was right and you do need both a 3.3V and 5V supply, the shifter doesn’t supply it.
If anyone wonders howto: I got it working with an ESP32 by connecting the AC 5V and GND directly to the 5V and GND of the ESP32. Then branch that 5V also to the HV of the shifter and connect the 3.3V of the ESP32 to the LV of the shifter. And then put the RX and TX through the shifter too.
It’s WAY easier, quicker and cheaper though to just use an ESP01 + adapter board
Yes, you need to power both sides of a level shifter. The two sides of the circuit aren’t connected electrically. They must have a common ground though.
Hi all! This is my first post! I have an inexpensive Midea 5K “dumb” window AC Model: MAW05R1WWT. It uses what I think is a bidirectional IR remote.
I’m wondering if the ESP dongle will work with this and if not, how to integrate this with home assistant? I would appreciate any help!
no for window a/c
you can do something like this one
2 Likes
Hello, I have integrated a SLWF-01Pro to my kaira branded mini split. It finally worked. In case anyone else gets lost like me, my problem was uart pin definitions. I guess I have flashed it with the example code on github and it defines uart with the usbc pins but not with the usb. So the fix is:
uart:
# tx_pin: 1
# rx_pin: 3
tx_pin: 12
rx_pin: 14
baud_rate: 9600
It works now with the ir pin soldered and temp reporting enabled. No problem there.
But it seems ir protocol does not accept the decimal because log says:
“Follow me action called with temperature: 27.40000 °C, rounded to: 27 °C”
Are there any fix for that, or the protocol is not implemented?
1 Like
Alright, I finally got everything and can report that it works: Comfee Smart Cool 7000-1 now running ESPHome
I’ve went the path of modifying the dongle Rene Klootwijk’s made to adjust it to my liking: GitHub - ezcGman/mideahvac-dongle
Features:
- It is tailored to replace the newer EU-SK105 dongles: It has the exact same size as the dongle, so it’s a 1:1 drop-in replacement
- I’ve changed a few components as I thought that just makes more sense, details to be found in the ReadMe
- Not specific to my change, but it also works with an ESP-07 which offers an external antenna!
Example ESPHome config can also be found in the repo: mideahvac-dongle/esphome/esph-comfee-7000-ac-esp12f.yaml at 734de37e9b3fd7be697a360407e9a440cd6276b8 · ezcGman/mideahvac-dongle · GitHub
Here are some pics of the board and the install, hope this will help some people from here on
Hey, I’ve got a different comfee device and got it disassebled up to the point where I’ve got the board in front of me.
Since CN2, WiFi is theoretically available on the board but does not have anything connected to it, i guess there is a version of this board, but with wifi equipped, can you upload a picture of your board?
Might be similiar and something could be soldered to it
Thanks in advance
Und liebe Grüße
Yeah that board really looks very identical to mine, I’ve attached some pics
below. It’s just missing the CN2 connector, but you can easily solder that to the board. Just get some “JST XH2.54 Vertical”, e.g. from this seller: https://www.aliexpress.com/item/1005008618405223.html
Question remains if the firmware on that board talks and receives data from that port / the Wi-Fi dongle. But it’s worth a try! I do have some PCBs and parts left from the board I built, if you’re interested. Should be ~2€ in costs plus shipping (excl. an ESP-12F or ESP-07 module).
Grüße!
Hi everyone and thank you for all the help provided here.
Just bought Dual airflow console from GTW (Midea rebranded) and I’m wondering where I can put the Followme pin to get it working.
I managed to get it working on wall unit. But can’t find the IR rec data pin on this one.
Here is a picture from my display board.
Thank you for your help !
Zukkerr
Hi @helgew,
Have you ever been able to use this integration with your ducted Ac system ? Can you share pictures of the mother board and the connection with the KSAIF-03 WiFi interface kit ?
Thanks!
Hi everyone,
I’m helping some neighbors connect their Carrier ducted ACs (40VD048S-6S-TEE) to Home Assistant. It’s part of a Carrier XPower VRF system with a 40VCW61 thermostat.
I don’t have physical access yet, so I want to be fully prepared when I visit. What photos or info should I collect during the visit to check compatibility (control board, comms ports, etc.)
Has anyone tried connecting this kind of system using the SLWF-01Pro adapter?
Also, the module in AliExpress includes a JST-XF2.544P adapter. Any idea what this is for, and if it’s worth ordering both before my visit? I might have a chance to access the units briefly, so I’d like to bring everything I need.
Thanks!
Sorry, saw that quite late, new to the forum and thought i would be notified via mail
I guess I’d be interested in trying, yes
Is private messaging available here? Would be nice for shipping details and stuff. Did I understand correctly you would send me one of the adapters? Haven’t ordered on AliExpress yet
Thanks in Advance!