hello,
i have a heat Pump Viesmann with 7 fancoil Olimpia Splendid model Energycal Hydro Touch with modbus preconfigured with Bticino/legrand Myhome_up (all fan coil is already addressed with unique address for bticino/legrand specifically ).
I don’t have myhome_up, is possible to use myhome assistant for to regulate the fan coils (temperature, night/day, timer etc) and the heat pump???
If yes, how is possible to integrate???
Did you get somewhere whit this? I am trying to communicate with the fan coils over RS485+Modbus but it seems like it’s not working at all. Could you tell me a bit about your setup?
hello, yes but with myhomeup and a expensive license…
Did you get a chance to look at the communication between the myhome and the fan coils?
yes, not a problem the comunication (myhome openwebnet protocol).
The problem is not the protocol but the license for to use f459 driver manager
I think I did not make myself clear enough.
What I am trying to achieve is to control the fan coil (Viessmann Energycal / Olimpia Splendid Bi2 TR Inverter) with an arduino / ESP8266.
The fan coil is not responding to any of my messages. I have tried multiple Baud rates, RTU and ASCII mode and multiple addresses but without any luck so far.
So I am trying to find out how to talk to the fan coil, without any myhome devices.
Thank you for replying so quickly
Oh I forgot to say, I got a document from Viessmann/Olimpia Splendid on how the modbus protocol is to be implemented (9600 baud, 7E1, Modbus ASCII) with the according registers, but still, nothing.
ah ok now is clear. Unfortunately i send the command to myhome and myhome convert the signal in a appropriate modbus command. Is not possible for me to view the translated command
You have activated the remote function on the olimpia splendid?
Ah ok, thank you for clarifying.
Yes, I enabled the remote mode and it says rE on the display. After some time E5 appears which seems to be the error code for “no remote control”
I will keep trying and will try to get some information from Viessmann/OS.
The E5 message apparead to me after the first installation, then I discovered that Olimpia had given me the same address with 2 fancoils. The myhome system provided that each fancoil had its own different physical address. Maybe it’s the same problem for you. You have tried to connect only one fancoil? Important: others must be without power it is not enough to turn them off.
Thanks! Yes, I have only one fan coil connected.
Did it become responsive immediately when it was the only fan coil? Or did you have to change the address of both/all fan coils?
What I am trying to figure out is if they respond with the “factory default” address 1.
by default the command is sent to the master and from there it is propagated to the slaves. In my case, I had to change the address in olympia. But they had to do it by changing the remote card.
In any case, the E5 was present only on 2 fancoils (same address). The default address is 01 (presume)
I have finally managed to get it running. 3 Fan coils are working perfectly fine, on in wall device is a bit … reluctant
Wow!! great. Do you explain your configuration?
I have a Wemos D1 mini with a max485 module, the rest is software I wrote. Its quite a mess right now but I am planning on publishing it sometime in the near future.
As of now I am able to set ambient temperature, setpoint, fan intensity, swing, and made a “fan only” mode, too. The only thing I am not happy with yet is that the controls and the infrared remote control do not work anymore. If I’m really motivated I might look into that too sometime.
I confirm that by reading the Olympia manual, enabling the remote mode completely disables the remote control. So do not waste time unfortunately it is like that. Probably their purpose was to manage fancoils as a hotel. I am very interested if you publish your great job.
You are right, it will be impossible by default. but the “main board” communicates with the “touch remote” over a 4 wire cable. looking like VCC, GND, and some serial communication. I would take a look at that and see if its possible to unplug the touch remote from the main board and plug it in to the ESP8266. Same with the IR remote control. I will take a look at the data they send and it should in theory be possible to decode the command in the ESP and forward it to the fancoil over modbus
It might actually be achievable…
Hello to both. I have installed now in my home olimpia splendid fan coils BI2 SL smart and i would like to ask your help. wich interface did you got to control this?
Can you give me an hint on this?
Thanks
Hi there, did you eventually pubished your work for the modbus configuration for olimpia splendid? i would like to take a look at it since i’m planning to remote control my 6 bi2 units, any idea where to start?