Ariston Alteas/Genus One+ boiler error reset possible ?

[dannyx94]

Hello. First of all, big thanks to everyone for your effort to make this project possible. I'm really interested in trying it myself, even though I know very little about code and stuff - good learning experience. I'm mostly interested in one simple task: resetting a "blocking" error in an Ariston Alteas (Genus) boiler. The Genus boiler is mentioned as tested at one point (I think by the author himself), so I was curious if someone has tried this feature. I have the Alteas model which is essentially the same thing AFAIK.

Why this would be a game-changer (for me at least): I'm away from home most of the time and if the gas gets shut off, the boiler throws a "501: No flame detected" error, which is normal. The problem is that it can only be reset locally from the control panel - there's no option to reset it via the app and even a power cycle of the unit doesn't get rid of it, so now the house is freezing for however long it takes me to get back, which can be days or even weeks on end.....not too smart there, Ariston. I can understand they're treating it as a safety hazard, but at least give me the option to take the risk...

Again, I'm a novice when it comes to programming, but if I understand correctly, in layman terms, the Ebus adapter is capable of listening in on the bus and reporting its activity to the RaspberryPi (as an example). The Alteas model which I have has also has a wired thermostat (Sensys HD) attached to the Ebus which also acts as a secondary display, mimicking the controls on the device's front face, including the option to reset errors. Assuming someone cracked the code and managed to read the info sent over the bus, I imagine it would be possible to send a reset command as well. I hope this is the case. I'm also hoping it wouldn't interfere with any existing devices on the bus, again, if someone tried it.

I don't want to dive too deep into this project just yet, so any input from any of you who experimented is good enough for now. Cheers !

[wrongisthenewright]

I've just seen your question, I was looking for something else and I stumbled upon it, Ysard has a Chaffoteaux boiler (Ariston Group) and he's been able to decode the error handling protocol, and even better the code to do the reset, take a look..

https://github.com/ysard/ebusd_configuration_chaffoteaux_bridgenet?tab=readme-ov-file#protocol-for-the-errors

[wrongisthenewright]

I've got the Ariston. Mira C is a model of the Chaffiteaux brand (Ariston group) . Both seems to use some of the same electronic

[dannyx94]

That's great news. I thought I'd be the only one struggling with an Ariston, since it seems it's most popular in Europe, but not anywhere else. I'm comparing the Mira's manual with Ariston's and most of the service menu sections do match up in terms of their 3-digit code. I don't know if it's relevant for the project at hand, but just as a bit of curiosity. The error codes in the manuals also seem to match to a degree - at least the codes that are common to both boilers, as some are found only on either one of the two. 501 for example is the same on both.

[dannyx94]

Approximately how many of the "messages" found by Ysard were directly compatible with your Ariston and how many did you have to adapt yourself to your model ?

[wrongisthenewright]

Given that some of Ysard messages came in some way from my repo

https://github.com/wrongisthenewright/ebusd-configuration-ariston-bridgenet

I'd say that probably you'll get many values out of it.

My HVAC system is 3 years old so, if your boiler is newer, some codes may be missing or different.

[dannyx94]

Thanks. That info is invaluable to me ! I surmise you have a Genus boiler ? My Alteas boiler is roughly 1 year old as of its installation - not the actual release on the market, though it IS indeed the most recent model, so it's a 2022-23-ish model by my calculations, so it should behave the same as yours.

[dannyx94]

You should grab the bus in a spot where you can balance bus latency and wifi latency. In my case the best solution was to wire the adapter directly on the boiler bus port.

The Alteas One has a built-in WiFi module that's connected to the main board through a separate connector - it does not require an external module connected to the bus for WiFi access, if that's what you are referring to here. Right now the only thing I have connected on the bus is the Sensys module, which also acts as my indoor thermostat. I'll run another wire from the ebus connector to the hat on the Pi and see what happens.

[wrongisthenewright]

Yoi have 2 options. Connect the hat 2 wires in parallel on the Sensys side (connect the 2 wires coming from the hat to the Sensys side connectors like prolonging the bus or you can connect the hat directly on the boiler PCB , always in parallel with the wires already present.

It depends on your house config, if the boiler is indoor and you have good wifi coverage in both places it should be indifferent where you tap the bus.
Please take care and do the wiring without ac power connected to the boiler.

[dannyx94]

Oh no, I won't be using WiFi on the Raspberry's side, if that's what you meant - wired ethernet instead. I'm all against WiFi to be honest :)

[dannyx94]

Quick question: if I open and edit any of the .csv files (for message definitions) in Excel, whenever I try to save them, I get a message about some "features getting lost if I continue"....does this affect the daemon when it loads the file ?

[wrongisthenewright]

You need to be sure that the CSV is comma separated values, without double quotes wrapping the various fileds

[dannyx94]

Not entirely sure how to check that, other than using Excel's "import data", which seems to delimit the columns correctly. The same thing happens if I just open the file directly by double-clicking, so I'm not sure if there's a difference.
EDIT: Ok, nevermind. I figured it out to a degree: you don't open CSVs in Excel directly - you import them OR edit them in notepad, just a lot harder to follow

[wrongisthenewright]

I use a normal text editor to customize my CSV so I don't know the correct procedure using XLS

[dannyx94]

I guess that works too, though it's tougher to follow. I just opened it in Notepad.

Should I expect the addresses of the boiler and Sensys to be different on my bus ?

[wrongisthenewright]

Can be but I don't think so. Ebusctl info run after some minutes after you have turned on wbusd should get you the exact list of the discovered devices.

Try and see what happens :)

Seriously you won't break anything. At worst if you have issues just disconnect the adapter and power cycle your boiler. It's quite resilient and I have done worst with my far busier bus ...

[dannyx94]

Will do. I guess there are no human-readable messages coming on the bus, so the only way you were able to figure out what each message actually meant was by trial and error and working out which message means what - like code XXXXXX means "heating on" and code YYYY means "hot water on". The bus is not going to TELL you this - it just spits out hex from what I understand. I'm always curious how people worked out each line in the .csv file !