Hello Bernhard
I am currently just do some testings with writing values over modbus tcp. At the end i like to make a smart grid setup with home assistant. That means if i make enough energy with my solar panel i like to set the smartgrid status to “vorzugsbetrieb”.
here the description from hoval:
Hello jgold
Thank you for the template, thats excatly what i was looking for (even in german) 
Where did you find the status code definitions?
The Status Code definitions can be found here for endcustomers:
https://library.loxone.com/detail/template-hoval-at-769/overview
Here you can find the status codes for Heating Circuits, Domestic Hot Water Ciruits, Heating Buffers, Heating generators like heatpumps or directly from the automat WFA 200 for example (for Ultra Source or Belaria machines).
If you download the [Loxone Config] and input the template, you can find all status datapoints. (https://www.loxone.com/dede/support/downloads/)
Normally the Status Codes are hidden in the service manuals of those modules like “TTE-WEZ” , “TTE-PS” or “WFA 201” for example.
On behalf of Hoval Product Management
Maximilian Stoll
Modbus-Integration für Hoval-Anlagen leicht gemacht | Hoval Corporate
Sorry only in german.
For all of you who need help to write target values on our Hoval sources or ventilation systems.
Use Case 3 & 4 is NOT recommendet! Mostly in use for big gasheaters in industrial plants!
Always use UseCase 1 or 2 for Heating, Cooling & DHW Preparation.
In behalf of product management Hoval
Greetings Max Stoll
Hi Max, can you elaborate more what Hoval is planning here?
Are you planning a full integration of Hoval heat pumps in Homeassistant?
Or would it still be based on the generic modbus integration described here?
What are Hoval’s timelines for such an integration?
I have a Hoval Belaria heat pump and a Huawei PV inverter. The inverter is already integrated with HA via modbus TCP and now I am contemplating if I should get the Hoval modbus gateway to also integrate the heat pump.
Hello,
i’m looking for how to connect my Hoval HomeVent FR251 with TopTronic e and Gateway (TTE-GW, S-Version: 2.34.006, HW-Version:1.0) to HA. After some tests with an old CAN BUS RPI hat, i have now come across this threat. Unfortunately, I can’t turn on the ModBus in the gateway. Does anyone here have an idea if and how this works?
I am glad to read that Hoval is also involved here! Thank you Max!
Unfortunately, the web interface (Hoval Connect) is no longer really usable.
That’s really great to read here! Now I just have to get the Modbus up and running.
Kind Regards!
Hello fozziebear80,
You have a normal Hoval Connect Gateway LAN or WLAN. This means you have the wrong software and you need a Hoval Modbus Gateway (part number 6049501).
I would recommend that you sell your old gateway second-hand and get the Hoval Modbus Gateway with the correct software.
Then you can enable Modbus TCP or RTU.
There is no way around it.
Hello andrusalem,
We are not planning full integration in HomeAssistant.
We only want to prepare examples (templates) for “Heating and Cooling” i.e. heat pumps such as Belaria pro comfort or Ultra Source and “Ventilation” i.e. ventilation units such as FR, FRT, ER, ERT and in future present ourselves as an open manufacturer that prepares templates for several third-party systems. We have already done this successfully with Loxone
We are looking for reference customers who we can support technically with the integration and in return the Home Assistant programmer makes his code and experience available.
Because we at Hoval do not program HomeAssistant.
We will only collect the experience reports and publish them on our website.
Greetings Max
on behalf of Hoval Product Management
With this additonal entries in the configuration.yaml i am able to control the room target temperature and the hot water target temperature for my belaria (thanks @jgold and @max_stoll for your help).
climates:
- name: Hoval Raum-Soll Climate
address: 1493 # Actual room target temperature HC1 - use if no room sensor
target_temp_register: 1481
scale: 0.1
precision: 1
temp_step: 0.5
min_temp: 10
max_temp: 30
hvac_mode_register:
address: 1501
values:
state_off: 0
state_heat: 1
- name: Hoval Warmwasser-Ist SF Climate
address: 1500 # Current hot water temperature
target_temp_register: 1497
scale: 0.1
precision: 1
temp_step: 1
min_temp: 10
max_temp: 70
hvac_mode_register:
address: 1504
values:
state_off: 0
state_heat: 1
@Max_Stoll_Hoval thanks for supporting the integration into HA! I do have an older model called Belaria SH installed with a remote called BRC21A52. Could you tell me if there is a chance to get it connected to HA via Modbus or any other protocol?
I’m not sure if this constellation uses a KNX gateway, likely no Modbus gateway. Thanks for your help.
Hello,
This model is very old and from the previous supplier Daikin.
The HomeAssistant template here only applies to Hoval products with the Top Tronic E control unit with touch display and Modbus gateway 6049501.
Unfortunately, your model is not compatible.
Greetings Max
Hi Max,
Great to have you here. We’re mostly very happy with our Belaria Pro Comfort, but HA integration would be great.
We currently have the LAN Module and like to control/monitor via the iOS App. Would this be supported in parallel with the Modbus option or do I have to decide?
I’m mainly interested in getting data out of the heatpump (power consumption, current temp, …) and not necessarily controlling it. Scraping the app API would be an alternative I guess if I want to keep the app.
Thank you for your answer. Could this model be upgraded with little effort or does it make sense to think about a new heat pump in terms of efficiency? What are your thoughts about amortisation of a newer pump versus this one?
Also do you know which Daikin version ist behind the BelariaSH? Is it the Daikin Altherma HT? Does it have a P1/P2 interface?
Hello,
Unfortunately, we do not provide external connectivity via the LAN gateway.
We are also not currently working on an API.
It is therefore necessary to purchase the Modbus gateway with article number 6049501.
The YAML template from the forum can then be used for heatpumps like Belaria or Ultra Source.
If Modbus data points are required that are not available in the YAML, or if other data points are required due to a different system hydraulic design, I recommend a visit to the Loxone Library.
Here we describe quite nicely how to get to the right Modbus data point, and we also provide practical instructions here.
But please be careful when writing values. Reading is definitely not a problem.
Hello,
Please understand that in this topic we can only support the integration of heat pumps developed by Hoval.
From general experience, however, I can say that Daikin also provides various expansion modules to integrate the heat pumps into home automation systems using Modbus TCP. The hardware module here is called “HomeHub”.
However, it may be that your heat pump model is too old for this and the compatibility must be coordinated directly with Daikin.
I also recommend a visit to the Loxone Library.
There are also gateways from the manufacturer Intesis and older Gateways developed by Daikin.
If you want to rely on Hoval products for reasons of efficiency and support, you can rely on a manufacturer that is open to interfaces and also provides its customers with support.
Hoval will increasingly address the issue of open integration in energy management systems or home automation systems in the future.
Thank you very much,
Greetings,
Maximilian Stoll
Hoval Product Management
Hello
I have a Belaria Pro Comfort with Toptronic E and Connect Gateway LAN.
Is this kompatibel with this intégration ?
If not, are there someone kompatibel ?
Thanks for your Answer and a good day
The HomeAssistant template here only applies to Hoval products with the Top Tronic E control unit with touch display and Modbus gateway 6049501.
Hello,
LAN Gateway is NOT compatible.
You need to replace it trought the Modbus Gateway (6049501).
Please contact your Hoval Installer or directly your Hoval Branch/country.
Thank you very much,
Greetings,
Maximilian Stoll
Hoval Product Management
I was very intrigued by this discussion which shows the great opportunity to integrate a Hoval heatpump into a home automation system. We currently are in the process to replace our gas heating with a Hoval Belaria Pro. My enthusiasm was dampened today when I asked about the cost to install a HovalConnect Modbus gateway instead of the HovalConnect WLAN gateway of the original quote: this would cost us about CHF 635.- more! Quite a prize tag!
I was initally shocked too, but the price for the normal WLAN Gateway was for me about 420 CHF and the Modbus was about 690 CHF. For me it was worth it, because i will hopefully use the Belaria Pro for over 15 Years . The normal App from Hoval is really poor and with the integration in homeassistant i am able to save money with a proper control and historical data and status of my heatpump.
(and no i am not getting paid for this post )
If the difference would have been 270 CHF as in your case, I would have considered. But the 635 CHF price increase that my Hoval representative asked for were above my pain level.
