myVAILLANT integration

Same here! Rolled back to 2024.12. 5.

Hello
You have to install the latest version for it to work again.
https://github.com/signalkraft/mypyllant-component/releases

After the mentioned errors also updated tot the latest version. Working fine. Looking at it today it seems off-line and error says:

This error originated from a custom integration.

Logger: custom_components.mypyllant.coordinator
Source: helpers/update_coordinator.py:411
integration: myVAILLANT (documentation, issues)
First occurred: 00:35:30 (7 occurrences)
Last logged: 13:54:15

Error fetching myVAILLANT data: myVAILLANT API is down, skipping update of myVAILLANT SystemCoordinator for another 10800s

So why is this occurring? Any solution?

I’m trying to install the integration for the first time, tomorrow they are installing a VR940F on our EcoTec Boiler, and the download from HACS works okay, however if I try to install the integration afterwards I run into a HTTP-Error 500
“Config-Flow could not be read”.

Had the same issue after updating to Home Assistant 2025.1.0
You need to update to the latest version of myvaillant, still in pre-release.
That fixed it for me.

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Hi, I have a Vaillant air conditioner but I control it via the ewpesmart app and I wanted to know if it could be integrated in some way. Thanks in advance to anyone who answers. Thanks

How can I do the update to a pre-release?

Hi, communication with Homeassistant is by mqtt right? Entities are added with autodiscovery or you had to add it manually? Wich entities are available?

I just added the vaillant Integration, and about 40 entities were here. Nothing added manually … so I don’t know if mqtt or not

But I changed the seconds between data refresh to 300 and now it works…

Yes communication with HA is MQTT.

It’s not as easy as using the integration. First you need:
a running ebus Adapter, and you have to install the ebusd (as HA AddOn or docker on separate system).
Than you need a configuration for your heating system. There are some predefined configuration files. But for my heat pump I had to change and add some configurations. ebusd configuration is a hard thing. A lot of help is possible by some very friendly guys at ebusd GitHub.

First I started with the HA auto discovery mechanism. You have to define filters to include / exclude the entities needed in HA.
But for me it was very painful to get only the entities I really needed in HA.
So I disabled auto discovery and defined the MQTT entities by hand.

To get an overview which entities will be available, best way is to have a look at the GitHub ebusd-configuration/ebusd-2.1.x at master · john30/ebusd-configuration · GitHub.
I am using the fork on ebusd-configuration/ebusd-2.1.x at master · jonesPD/ebusd-configuration · GitHub.

With my aroTherm and sensoComfort I get all entities needed to monitor and control. A lot more than provided by the integration.
And because it is local, its rock solid and stable from the first day I get my configuration running.
But don’t under estimate the time to get all running.

2 Likes

I have our 5kW Arotherm+ loaded into HA (I’m a complete HA noob) via this wonderful integration and would like to create my first rule that changes the the weather compensation curve depending on the outdoor temperature. The curve is not steep enough and I want the curve to be reduced during warmer weather (something like 0.6 at above 10C) and increased when it’s colder( 0.75 at below -3C). Can I do this with the help of this integration? Any tips on how to start doing this?

changed back to 1200 Seconds because currently it does not work anymore…