Daikin Heat pump Altherma Integration

Hello everyone,

I’m Vincent, from France and i am very happy to join the community ! We are currently building our house and we plan to install Home assistant for controling shutters (Z-Wave Fibaro), venetians (Z-Wave Fibaro) and the heating system.

We plan to install a heat Pump Daikin Altherma 3 (ALTHERMA ERGA04DV), connected to a heating floor at the first floor, and to water heaters at the second floor. The heat pump works only in heating, not cooling. If possible, we would like to integrate control of the heating system into Home Assistant.
We’ve seen that some Daikin A/C were compatible with AssIO (https://www.home-assistant.io/integrations/daikin/), but the article doesn’t mention Altherma Heat Pump.

We plan to buy a Madoka thermostat (BRC1HHDW) and we can add a LAN card (BRP069A62) to the heat pump to connect it to DAIKIN ONLINE CONTROLLER.

Does anyone use this kind of configuration ? Do you know if it is compatible with Home Assistant ?

I’ve seen, we could also connect a Z-Wave thermostat (such as Netatmo or other) to the heat pump, but as far as possible, i would prefer to keep Daikin hardware to keep internal regulation and avoid a switch On/switch Off regulation that doesn’t look so optimal from the energy consumption point of view.

Thanks for your help and advices !


Hi Vincent,

I already have a Daikin Altherma 3 Hybrid (only heating).
Because the Daikin integration says nothing about the Altherme devices i did’nt buy the LAN adapter.

For now we use the Honeywell Evohome thermostat wich is supported by HA.

I’m also interested for the HA integration for the Daikin as well for detailed monitoring.

One more Daikin Altherma 3 owner here who wants to connect it with Home Assistant.

It seems that there are no support for Daikin Altherma 3 yet. So I’m considering to buy BRP069A61 because it has inputs for solar panel controller and I can add some “smart grid” functions. BRP069A61 installation manual seem a bit odd. There are mentioned “digital inputs” but on the schematic they seem analogue relay open/close loop inputs. I’m planning to limit the power when the electricity price is high and force to max if the price is low with Wemos D1 mini flashed with Tasmota.

I have UFH (underfloor heating) system. The room temperature is controlled by leaving water temperature. Heat buffer is 12-24h, so there is no need for room temperature controller.

Hi all,
I’m planning to install a Daiking system and I see that there are many different products for connecting it into the intranet (WIFI, LAN, etc).

Just want to know what you finally did.
Which controller did you install?. What would you recommend me?

I don’t know your setup so I can’t recommend what’s best for you. I installed BRP069A61 and currently I’m using it without solar panels. (I want to add some panels in the future) In my setup, Home Assistant checks the current electricity price and switches “all on” when the price is low and “all off” when the price is very high (for me :slight_smile: ) Between low and high price the mode is “normal” or “standard”.

To be clear, BRP069A61 does not have digital inputs. Just as I suspected, analogue relay normal open/close inputs. I used 2 channel Arduino relay board and Wemos D1 mini. Everything works great.

Thanks @stosoorok for your response.
I have heard that you can control it with that controller and also using the mobile app. Can’t you do that?.
Anyway, your option about the relay and the Wemos looks cool. Could you share it?.

About the solar panels and the controller, I guess that what it does…just check the electricity generated with the inverter (solar panels) and try to use it. I mean, more or less it would be the same with a Shelly EM, doesn’t it?

Thanks in advance.

Yes and no. You can adjust domestic hot water only. If you want to adjust room temperature, you need to add wired Madoka remote controller also. I think it’s quite useless. You set the temperature from the heat pump menu and that’s it, weather curve takes care the rest.

What do you want to know about the Wemos and relays? Maybe one picture is better than many words :slight_smile:

You are correct about the solar function. I just use it to switch all on when the price is low (sun is shining and inverter running) and when the price is high (night time, all off or eco mode)

You don’t need madoka anymore. You can control the UFH water temperature too. Just install new Daikin residential controller on your phone and let the firmware on Lan adapter update. I am using it about one month like this. No madoka or room thermostats.

The only problem - the webpage of the adapter (IP address in the adapter) works only short after the adapter is switched on.

I am planning to connect it to my SolarEdge Inverter. It has native heat pump support, just I need to buy another 3 parts from SolarEdge…

I have a Daikin ALTHERMA hybrid + Lan adapter.
You can read and write values via local network ( skipping the Daikin cloud using) websockets as a communication protocol.
Here is a python script to read and write values. Replace the IP with your Lan adapter IP.

from websocket import create_connection
import json, datetime, time, urllib2, urllib
ts = time.time()
timestamp = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S')
#replace with local LAN adapter  IP
ws = create_connection("ws://")
# websocket command to read value
result1 =  json.loads(ws.recv())
result2 = json.loads(ws.recv())

print("Received temp '%s'" % result1)
print("Received target '%s'" % result2)

#tankTemperature = result1["m2m:rsp"]["pc"]["m2m:cin"]["con"]
#tankTargetTemperature = result2["m2m:rsp"]["pc"]["m2m:cin"]["con"]

def setValue(ws, item, value):
    result1 =  json.loads(ws.recv())
    print("Response was: %s" % result1)
    value = result1["m2m:rsp"]["rsc"]
    if (value==2001):
    return value

# set target temperature to desired one 
setValue(ws, "1/Operation/TargetTemperature", "24")


I’ve taken the initial code from the openHab forum. I plan to write an integration for HA in the future (a couple of months), including controlling zones / thermic actuators / pumps for underfloor heating. For now, I’m busy with setting up other automations as I’ve just moved in.


Here is a project that allows you to read the daikin data from the lan adapter and publish it to MQTT (it does polling based on some configs)

A screenshot from my unit
1 Like


I just released ESPAltherma. It monitors (and on/off controls) Daikin Altherma with an ESP32.

Tell me what you think!


So I have LAN Adapter with Smart Grid functions installed.
My setup:

  • Daikin Altherma 3 Air to Water
  • Daikin LAN Adaptor BRP069A61 with Smart Grid functions
  • No room temperature meter! - I dont want it!
  • ABB Electrometer measuring Export to grid, connected to Daikin LAN Adaptor
  • SolarEdge Inverter
  • Solaredge Dry contact switch connected over SolarEdge ZigBee module

So when Photovoltaic is producing electricity to Export, it should be used with Daikin Heat Pump.

ABB Wattmeter and Daikin adapter is not working still (maybe a cable shading problem), so I am using Heat Pump smart Power-On with Static limitation (setted up to 1,5kw now).
The whole system works only when the heating/cooling is manually powered off. When I power on the heating/cooling, the fresh water heating is powered off and LAN Adaptor signalise no Smart Grid (SG LED is off)
So it would work during summer only (no heating) and only when no cooling will be turned on. Such a stupid functionality made by Daikin!

Second possibility - I need to get Room Temp. thermostat, which adds cca 20% costs to heating and even the Heat Pump will start/stop more frequently, causing earlier wear and tear.

Does someone else has experiences with Daikin LAN adapter functionality?

@raomin - great news! are you planning to do something with Smart Grid too?

Hi All,

New to this particular forum. But I have a lan adapter from Daikin.
And I made a Python script that basically does everything you can do with the “controller” app
from daikin.

If you like to see more functionality let me know I rewrote the whole damn thing in the last 2 weeks :slight_smile:
And came across this site by googleing some more info.

Currently trying to write more documentation of the code before moving on and adding more functionality.

You could run this on any Raspberry PI like the Zero and perhaps even on micro python to further reduce costs.

Hope it helps if you have questions let me know!

1 Like

Nice! I have the same setup and really would like to control the heatpump from HASS. E.g. if my solar panels generate energy, boost the boiler temperature and start heating. Same if good sunny weather is expected, don’t heat the house that much in the night/morning.

Any ideas hoe to use this Python in HASS? I am at a level that I can fix things but not advanced coding.

Hi There,

I have been looking at it, Although I have solar so it could be worth the time with all the WFH these days.
It would be a fine balance not all days with sun are days you want heat (summer) and some days without sun you want heat (winter) so it will be a complex project to keep all this in mind. In the end you want a warm boiler when you need (at 2200, or 0700 it could be dark depending on the season). it regardless the amount of sun per day. same with heating your house :slight_smile:

But it is a hobby project so I don’t put too much time in it, but feel free to contribute the logic here is something that would definitely need to be good enough for daily use, it might take a while

Hello Sircobalt can you explain how to get this running ? I downloaded the zipfile but cannot get the GUI to run.

make sure that you installed the latest java version on the machine ( version 15), then just run the command
java -jar daikin-0.0.1.jar

Hello everybody. I am sorry, if this the wrong place, but i ask if this might work with LG Therma V air-to water heatpump. As i am looking for a solution to control it from hassio and for heating.

Great thanks and sorry again.

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HI Everybody, I’m a devs in C# and I would like to compile the project, but impossible eclipse tell all artifacts are missing. Can you help me for compiling the project ?

Best regards,

Hi Sircobalt, I c# devs but I don’t know how build the project, can you help me, eclipse tell me the artifacts are missing, but all are present.

I don’t know