Sabiana is an Italian company operating in 50 countries. They supply HVAC devices such as fan coil units, radiant panels, air handling units, and more. The newer models also feature WiFi connectivity and can be controlled via the Sabiana WiFi app.
I would like to connect my Sabiana cooling convector (SABIANA CVP-ECM-TA 4) to Home Assistant, so I’m looking for a new integration between Home Assistant and Sabiana WiFi. This integration could benefit many other Home Assistant users, as different Sabiana devices use the same Sabiana WiFi app.
The device also has BLE and a corresponding Sabiana BLE mobile app, but I would prefer the WiFi option.
I have asked Sabiana for API descriptions, but they directed me to contact my local representative, who in my case is a wholesaler.
I have an idea ,
For you and anyone else that’s a Sabiana Customer, I would suggest asking the mfgr to look into the works with home assistant program to see if their API would be compatible with HA. Introducing the Works with Home Assistant program - Home Assistant.
The more of their customers that request this, the more likely it would happen.
The other way is to get someone to write something which 99% of the time is someone with the hardware or a desire to use the software and has the chops to write a custom Integration. If someone so chooses this can also be a core integration but that takes more work and commitment, There are thousands of core integrations, so it happens, but there are probably more custom ones than that because the entry bar is lower.
Vote for this aswell! I just bought a Sabiana (Branded Eveco in Norway and Sweden) - Model Carisma Fly CVP3, with WiFi, BLE and IR/Remote.
Would also be interested in this. Preferable to connect over local ip to the new Sabiana units (these have ESP module directly on the PCB, see attached picture). Maybe these might run some Tuya software and Sabiana wifi app might be a OEM system?
A secondary way would be use Sabian cloud integration and API to control the unit.
A third way, would be to add an modbus interface to these units. (a addon card can be purchased to get RS485/RTU), and control the unit through modbus. This is a bit cumbersome and least elegant(require the most layers/equipment) way of doing it, but per today the most feasible way as all is available.
A fourth option is IR emitter. But this is only one way communication, and one could not receive values from the fancoil/ac unit.
The modbus way is the direction I will be taking, as option 1 and 2 are per today not possible as I have not found an integration.
When I get my unit connected up, I can try to add it to tuya could. Just to see, if does become added. The the route might be shorter, and use something like tuya local/local tuya
Here in Finland I can see Sabiana convectors sold with either IR control OR Modbus. It seems if I choose the Modbus version for Home assistant connectivity, there is no IR control available for local use. Instead I should install local wired control panel. At least that’s what my HVAC-guy told me, but was not quite sure. Most of his customers don’t need modbus
I’m still shoosing the units to buy, so any clarity in this would be highly appreciated. Can you have both IR control and also Modbus available at the same time with Modbus add-on card?
Anyway, will be closely following your development. Modbus seems to be the only way to go so far.
Sabiana / Eveco seem to have two generations of wall mounted Fan Coil.
I believe Gen2( CVP-TA ) was introduced in 2025(or 2024), and has always WiFi(ESP module on PCB).
My supplier(Armatec in Norway) have confirmed with Eveco that my variant( CVP-TA with WiFi) shall both support IR remote, WiFi Control and Modbus simultaneously. I have yet to test this as I have not yet commissioned the unit, but based on that I have asked about this specifically I’m optimistic about it.
Note that this gen 2/WiFi unit has two Serial Interfaces on its PCB, one serial interface slot(M14-M15 on the PCB) will be used with my addon modbus(Part number MBA, the type B card), generating a modbus interface that I can control from a 3rd party control system.
The secondary serial interface is connected to a IR receiver by default. This slot is described as CTRL (M8 port).
You can use the unit with an external RS485/Modbus thermostat Eveco/Sabiana, called TMB2 connected to the M8 port, with an external modbuscard MBA, type a card). But when this is connected, you can not also use the IR(as the ir reciever eye is connected to the same port on motherboard PCB). I belive you can have one TMB2 thermostat connected to multiple fancoils.
I belive this is why some of the confusion, as there are two modbus interfaces on the fancoil, one for external contorl and one for external thermostat(which cannot be used in combination with the IR reciever/remote).
I’m do not know what the status is on the first generation units, which does not have wifi. I assume the majority of units which is in the market is of this type.
I thought about Modbus aswell but my knowledge wouldn’t be enough to establish interface to Home assistant on my own. I just hope that since the device already has wifi and bluetooth interfaces, some kind of update or 3rd party interface would appear
It seems that the only way to go forward would be with Modbus. I’m just wondering where I could get the Sabiana MBA kit since I don’t have the modbus version. The MBA kit should be optional accessory with product code 9025304.
I thought about installing only the “card B” from the MBA kit to M14-M15 so that I could still have the infrared control in the M8/CTRL INTERFACE port.
If I would install my unit to Slave mode, I guess it should get the commands via M14-M15 port RS485 with Modbus RTU and also listen to IR-commands from M8/CTRL INTERFACE.
For the hardware, I think something like this: USB TO RS485 - Waveshare Wiki
could work.
Configuration.yaml would be something like this (not tested!!!):
modbus:
- name: sabiana_modbus
type: serial
port: /dev/ttyUSB0
baudrate: 9600
bytesize: 8
parity: N
stopbits: 1
method: rtu
sensors:
- name: Sabiana Temperature
address: 1
input_type: input
unit_of_measurement: °C
slave: 1
- name: Sabiana Fan Speed
address: 2
input_type: holding
slave: 1
Please let me know if someone finds a place to buy the Sabiana RS485 card. I can test it out and report if I get it working.
I am actually working on a BLE integration right now leveraging on the CB Touch smart command, with some good old reverse engineering (and Gemini too) to interpretate the data stream. Looks pretty feasible to me.
It is also possible to sniff Sabiana’s official APIs and implement them maybe using Node-RED but I prefer local integrations. As soon as I have something working, I will send you an update.
I received my three fancoils today. I did some preliminary unboxing, nothing else yet.
I had an email exchange with local importer and wholesaler Onninen. To get both IR for local use and Modbus for HA, there seems to be two ways to go:
Get CVP-TA that has IR remote and receiver included. Add the Modbus accessory/MBA kit KC-F 9025304
Get CVP-MBA that has the Modbus included. Add the IR remote RT03 and IR receiver RS-F
This was also confirmed from Sabiana factory.
My choice was CVP-ECM-MBA + RT03 + RS-F. Reason being that Onninen does not have the MBA kit KC-F in their catalogue. I do think that actually only difference between the -TA and -MBA models are the accessories included. The base machine is exactly the same. Sabiana just does not make this very clear in their materials.
@timofin , maybe you should try to get Onninen to order the MBA KC-F kit to you. I was investigating this and no, Internet does not help much.
I will focus on the mechanical installation first and start investigating Modbus next. I had good experience connecting my Nilan ventilation unit with Waveshare RS485 TO ETH converter. Also Nibe heatpump connection with Lilygo ESP32 RS485 converter was a success. But both of those had an integration and examples available.
Does your models include WiFi and Bluetooth? Meaning, can you manage the device using Sabiana WiFi or Sabiana BLE apps? If so, the integration I am building could be your solution.
Right now, I managed to handle the secret token sharing and the reading of all parameters, I am working right now to implement the writings. As I said before, this looks feasible.
Yes, -TA and -MBA models are the new ones, so they have Bluetooth and WiFi. Any integration would be absolutely fine, strong preference is local over cloud. My way was Modbus, because that is closest to my automation engineer’s skillset.
Should you need any testing or other help (not coding ) in your integration development, please don’t hesitate to ask. Glad to help.
I am working on this integration as a relaxing job for my summer holiday break, so do not expect results anytime soon I am confident about the notification logic and the interpretation of the payload, I am now trying to understand how to write commands to the board.
As for Modbus, my board is shipped with RS485 ports and I was able to find online the technical sheet with all the registers. I know this is the Sabiana preferred way to integrate their products to existing systems, I once did a job for a company that did so.
But again, if BLE happens to be reliable, I think this could be the best way to accomplish this integration, wireless is always more convenient than wired (hopefully not too unreliable)
I am confident about the notification logic and the interpretation of the payload, I am now trying to understand how to write commands to the board.