Mitsubishi MELCLOUD integration with Home Assistant

Tags: #<Tag:0x00007fd07c87d238>


Hi All. Congrats on a great job developing HomeAssistant.
Are there any plans to integrate Mitsubishi Electric Air Conditioning MelCloud cloud based platform with Home Assistant?

Thanks in advance.

Mitsubishi AC (with WIFI module) and HA
Mitsubishi AirCon

Not that I’ve seen. I found this in my searches, leading me to believe it is possible:


Copied from a Norwegian forum, one of the members are trying to make MelCloud work with Homeseer:

Login that returns a contextKey:
curl --data "AppVersion=´=&CaptchaResponse=&Persist=true&Email=epost&Password=passord"

Get an ID and a buildingID:
curl -v --header "X-MitsContextKey: ContextKey"

Getting all statuses from the MelCloud adapter:
curl -v --header "X-MitsContextKey: ContextKey"


Where will this go exacly ? Sorry for my ignorance and Thanks in advance!


My post was just input to get some eager developer started :wink:

I guess you can use the URLs to get json data that you can use with HA to read the state of the heat pump , but it would be difficult without a dedicated component.


be sure to +1 / vote on this feature request to get it bumped up :slight_smile:


I found out that MELCLOUD is only available in certain countries. I’m in Australia and using the Mitsubishi WIFI adapter.

started coding a MQTT poller here:


+1 for MELCloud support in Home Assistant. There is a plugin in Domoticz based on Python that maybe can be used a start?

I haven’t tried the MQTT poller, maybe that is a fully functional solution (to be able to control all functions of the HVAC like temperature, vanes, fan-speed, etc)?

P.S. I am not a developer so I am not the person to implement this


Hi, are there any news for melcloud?


no… unfortunatly I haven’t seen anything :cold_sweat:


I had thought of a temporary solution …
to integrate the melcloud site into the home assistant in this way:

title: MELCloud

But I can not get to the site, I think the problem is https


Hi @delwinbest, does it work melcloud via Home Assistant?


No. I could not get access to Melcloud in Australia. It uses the melview API and app that comes with these devices.



I developed the MELCloud component in order to support Mitsubishi Air Conditioner in my home-assistant.

You can find it here:

I will try to send a pull-request to HA Team when I will have 5 min :slight_smile:



Hi @o0Zz

I tried your melcloud component, but it does not work

I have this error
Error fetching Cognito keyset:
15:05 components/cloud/ (ERROR)



This error is not related to melcloud component and melcloud don’t even use “cloud” component.
I think this error is related to another component, could you try to get logs from melcloud ?

default: debug
homeassistant.components.climate.melcloud: debug


Here is the debug

2018-03-25 15:20:42 INFO (MainThread) [homeassistant.components.climate] Setting up climate.melcloud
2018-03-25 15:20:42 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] Adding component: melcloud …
2018-03-25 15:20:42 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] Login …
2018-03-25 15:20:43 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] melcloud: Component successfully added !

I think everything went well, but I can not find the melcloud component


Yes, everything is going well, the component is unable to find your air conditionner.
Just after:

req = requests.get(“”, headers = {‘X-MitsContextKey’: self._authentication.getContextKey()})

Could you add below line:

And provide logs.


and now:

2018-03-25 15:38:05 INFO (MainThread) [homeassistant.components.climate] Setting up climate.melcloud
2018-03-25 15:38:05 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] Adding component: melcloud …
2018-03-25 15:38:05 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] Login …
2018-03-25 15:38:06 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] {‘ErrorId’: None, ‘ErrorMessage’: None, ‘LoginStatus’: 0, ‘UserId’: 0, ‘RandomKey’: None, ‘AppVersionAnnouncement’: None, ‘LoginData’: {‘ContextKey’: ‘13D733CBB8F64A5EAB6051EA1D1D1C’, ‘Client’: 26360, ‘Terms’: 1095, ‘AL’: 1, ‘ML’: 0, ‘CMI’: True, ‘IsStaff’: False, ‘CUTF’: False, ‘CAA’: False, ‘ReceiveCountryNotifications’: False, ‘ReceiveAllNotifications’: False, ‘CACA’: False, ‘CAGA’: False, ‘MaximumDevices’: 10, ‘ShowDiagnostics’: False, ‘Language’: 0, ‘Country’: 112, ‘RealClient’: 0, ‘Name’: ‘Michele Mercuri’, ‘UseFahrenheit’: False, ‘Duration’: 30, ‘Expiry’: ‘2018-03-25T14:08:06.06’, ‘CMSC’: False, ‘PartnerApplicationVersion’: None, ‘EmailSettingsReminderShown’: False, ‘EmailUnitErrors’: 0, ‘EmailCommsErrors’: 0, ‘IsImpersonated’: False, ‘LanguageCode’: ‘en’, ‘CountryName’: ‘Italy’, ‘CurrencySymbol’: ‘€’, ‘SupportEmailAddress’: ‘[email protected]’, ‘DateSeperator’: ‘/’, ‘TimeSeperator’: ‘:’, ‘AtwLogoFile’: ‘ecodan_logo.png’, ‘DECCReport’: False, ‘CSVReport1min’: False, ‘HidePresetPanel’: False, ‘EmailSettingsReminderRequired’: False, ‘TermsText’: None, ‘MapView’: False, ‘MapZoom’: 17, ‘MapLongitude’: 13.760831398873165, ‘MapLatitude’: 43.25111426175814}, ‘ListPendingInvite’: [], ‘ListOwnershipChangeRequest’: [], ‘ListPendingAnnouncement’: [], ‘LoginMinutes’: 0, ‘LoginAttempts’: 0}
2018-03-25 15:38:06 DEBUG (SyncWorker_0) [custom_components.climate.melcloud] melcloud: Component successfully added !


wow, I can’t see any device on your account. Did you register any air conditioner to your melcloud account ?
Can you control it from: ?