It’s not compatible with Navilink 128 (at least the version I have), even the HA “official” Cozytouch integration (Overkiz) isn’t.
I made a custom integration for Cozytouch that works with my Navilink 128 + Naema Micro 25, you can try it if you want : GitHub - gduteil/cozytouch: Atlantic Cozytouch integration for Home Assistant
Thanks!
what sensors are available?
It depends on your device, and some adjustments need to be done if your device has not been integrated yet.
What device are you using ?
Lot of sensors and controls are available in the Cozytouch API, at least everything you can have in the official app will be accessible in the integration, but much more sensors are published and not used by the app.
I have an NPE-240A2 and I just ordered a NaviLink Lite. I also have a logic analyzer as well as a capable digital storage oscilloscope. I think I am going to set things up initially using this integration, but for fun I also think I am going to have a go at examining the RS-485 traffic. I’ll let you know what I find out 
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oh - can you say more about examining the RS-485 traffic? i have another device i want to do that on. i have a couple of USB to RS-485 connectors but haven’t used them yet, haven’t figured out where to start actually. that’s the next rabbit hole i’m going down 
29 posts were merged into an existing topic: Navien, ESP32 Navilink interface
@mbcomer Were you able to do this exploration, and did you figure out anything interesting?
I am a little confused by the name of these items and what the on/off button is or isn’t?
i didn’t see the note about dip switches until after i had installed the navilink lite and i would prefer not to re-open as our unit it is a little difficult to get too, so hoping can someone clarify if I have the full set of entities?
A few questions regarding this integration. Thanks to @nikshriv for your work on this.
I’ve installed the Navilink Lite and the integration and seem to have access to the entities exposed by the integration, including the hot button recirc switch.
My unit doesn’t have a remote temp sensor installed but does have the dedicated recirc circuit. Can this work without a remote temp sensor? If not, any pointers to a workable wireless solution?
If it can work without the remote temp sensor, are there any particular settings that I should look at on the water heater itself? Temp differential would see it has no effect if there is no temp sensor.
The recirc pump does not run more than a couple of minutes when the recirc is triggered. I’ve increated fixture distance to 400 feet but doesn’t seem to have any effect. Water at the fawcet is luke warm at best when running on cycle of every 30 min.
Appreciate any guidance on this.
wow thanks man! I was struggling with this unit for almost one day 
I have an NPE-240A2. If I read everything correctly then if I add a NaviLink Lite and I can use the app to communicate with the heater? Thanks
