Km200 still working for me, with the exception of gas consumption
For information, I successfully setup a KM200 v2 & it recognise my rc310.
Make sure you have a DHCP that always give the same address to your KM200.
1st parameter is the IP address of the KM200
For the 2 nd parameter, use the « password » which is printed on the KM200 but remove the - ex : abcd-abcd-abcd-abcd → abcdabcdabcdabcd
3rd parameter is the password you have setup on the mobile app MyDevice from Buderus.
I hope it helps.
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For those of you who are frustrated with the KM200 integration in Home Assistant, I recommend taking a look at the gateway from BBQKees. I switched to it and sold my KM200. You can also use it to calculate the heating consumption as input for the energy dashboard. 
More information can you find on my website (german) or here: Configuration for Home Assistant (MQTT Discovery) — EMS Gateway documentation (bbqkees-electronics.nl)
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Hi
This looks promising, I constantly get issues with my KM200 disconecting from my Unifi network. It was ok before but since it is on a Unifi switch it very unstable.
I would buy the BBQkees but I want to be sure I can calculate the consumtion. Can you tell me how it’s doing it?
Thanks!
That was the right hint, it is now running.
RC310 V2 + KM200
Thank you very much!
—>
1st parameter is the IP address of the KM200
For the 2 nd parameter, use the « password » which is printed on the KM200 but remove the - ex : abcd-abcd-abcd-abcd → abcdabcdabcdabcd
3rd parameter is the password you have setup on the mobile app MyDevice from Buderus.
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This worked for me with KM200. Thank you very much!
And how does that work with a KM50? Its worked once before…
Hi unhappy users…
I had troubles for 2 years with Buderus WPL and KM 200 it was working before… but suddenly I had connection issues on Unify network and I my IP module was replaced by Buderus support. Since then (and few HA updates) I was strugling with configuration…
Today I have spend about 3hours with research,with testing and debuging…
2025-09-08 18:59:41.816 ERROR (MainThread) [custom_components.bosch] Your device is unknown null
2025-09-08 18:59:41.816 ERROR (MainThread) [custom_components.bosch] You might need to check your password.
2025-09-08 19:01:02.179 INFO (MainThread) [custom_components.bosch] Setting up Bosch component version 0.28.2.
2025-09-08 19:01:02.179 DEBUG (MainThread) [custom_components.bosch] Initializing Bosch integration.
2025-09-08 19:01:02.225 DEBUG (MainThread) [custom_components.bosch] Checking connection to Bosch gateway as 277600381.
2025-09-08 19:01:02.972 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /gateway/uuid
2025-09-08 19:01:03.068 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /system/bus
2025-09-08 19:01:03.167 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /gateway/versionFirmware
2025-09-08 19:01:03.270 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /system/brand
2025-09-08 19:01:03.375 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /system/info
2025-09-08 19:01:03.488 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /system/systemType
2025-09-08 19:01:03.587 WARNING (MainThread) [bosch_thermostat_client.connectors.xmpp] Can’t decrypt for /gateway/DateTime
2025-09-08 19:01:03.588 ERROR (MainThread) [bosch_thermostat_client.gateway.ivt] I cannot find supported device. Your devices: null
2025-09-08 19:01:03.588 ERROR (MainThread) [custom_components.bosch] Your device is unknown null
2025-09-08 19:01:03.588 ERROR (MainThread) [custom_components.bosch] You might need to check your password.
And surprise surprise it works now!
What helped is
[https://www.youtube.com/watch?v=o2pob8YsB2I&t=298s&ab_channel=MeinedigitaleWelt](https://this video)
Where I saw that guy was resetting password over device directly Buderus/Bosch/IVT… and that made difference for my issue. I think it is worth to mention to those who didn’t have luck with configuration for now.
I did reset to simple password ower Android App and Bosch SingleKey ID but that was not enough. App was working and I could configure Heat Pump… but real difference for HA was in reseting password over device.
So for me now also works
Bosch => Choose device type => IVT => XMPP
Serial number of device
2776… (user name in device)
Access token
vadfVWetnWn43t… (password in device without “-”
Password
your password password to the app… (follow video and remove device and add it again over QR code)
Greetings from Slovakia HA user
Hello,
I’m also trying to integrate my Buderus KM100 into Home Assistant. Unfortunately, I haven’t had any success for days. I keep getting the following messages:
HTTP: Incorrect username or password
XMPP: Unknown model
Setup error, retrying: (‘Cannot connect to Bosch gateway, host %s with UUID: %s’, ‘6xxxxxxxx’, None)
Can you explain to me again exactly what steps you followed? I tried to do it exactly as shown in the YouTube video.
Thanks
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