Ariston NET remotethermo integration for Home Assistant

Thin integration is a side project which works only with 1 zone climate configured. It logs in to Ariston website (https://www.ariston-net.remotethermo.com) and fetches/sets data on that site. You are free to modify and distribute it. It is distributed 'as is' with no liability for possible damage. Cimate has presets to switch between off, summer and winter in order to be able to control boiler from one entity.

Donations

If you like this app, please consider donating some sum to your local charity organizations or global organization like Red Cross. I don't mind receiving donations myself (you may conact me for more details if you want to), but please consider charity at first.

Integration slow nature

Intergation uses api developed by me based on assumptions and test results. It continiously fetches the data from the site with periods determined during tests to have not as many interference with other applications (like Ariston NET application or Google Home application) but be quick enough to get information as soon as possible. You may read more about API (ariston.py) on the website: https://pypi.org/project/aristonremotethermo/.

Integration was tested on and works with:

• Ariston Clas Evo
• Ariston Genus One with Ariston BCH cylinder
• Ariston Nimbus Flex
• Ariston Alteas One (note that internet_weather is not supported by this model and must not be included in switches or binary sensors)

Integration was tested and does not work with:

• Ariston Lydos. use https://github.com/chomupashchuk/ariston-aqua-remotethermo-home-assistant instead.
• Ariston Velis. use https://github.com/chomupashchuk/ariston-aqua-remotethermo-home-assistant instead.
• Ariston Lydos Hybrid. use https://github.com/chomupashchuk/ariston-aqua-remotethermo-home-assistant instead.

How to check if intergation supports your model

You may check possible support of your boiler by logging into https://www.ariston-net.remotethermo.com and if climate and water heater parts (like temperatures) are available on the home page, then intergation should potentially work.

Integration installation

In /config folder create custom_components folder and folder ariston with its contents in it. In configuration.yaml include:

ariston:
  username: !secret ariston_username
  password: !secret ariston_password

All optional attributes are described in Integration attributes
Order of Installation:

• Copy data to custom_components;
• Restart Home Assistant to find the component;
• Include data in configuration.yaml;
• Restart Home Asistant to see new services.

Integration attributes

• username - mandatory user name used in https://www.ariston-net.remotethermo.com
• password - mandatory password used in https://www.ariston-net.remotethermo.com ! It is recommended for security purposes to not use your common password, just in case !
• name - friendly name for integration, default is Ariston
• hvac_off_present - indicates if HVAC OFF shall be present in climate entity. Default value is false.
• hvac_off - indicates how to treat HVAC OFF action in climate (use depends on hvac_off_present). Options are off and summer. By default it is summer, which means that turning off would keep DHW water heating on (e.g. summer mode). Presets in climate allow switching between off, summer and winter.
• store_config_files - true or false indicating if configuration json files to be stored in /config/custom_components/ariston folder. Can be used for troubleshooting purposes. Default value is false.
• units - which uniots to be used. Values are: metric (°C-bar-kW...), imperial (°F-psi-kBtu/h...), auto (detect automatically, which takes additional time). Default is metric. Note that use of auto requires additional request to be used, which would result in slower update of other sensors.
• polling - sets floating value of relative polling rate. Default is 1.0. Setting value to 2.0 for example would increase timeouts times and retries by 2 times. It is recommended to set this value to more than one (e.g. 1.2) in case timeouts take place very frequently.
• logging - sets logging level (CRITICAL, ERROR, WARNING, INFO, DEBUG, NOTSET). Default is DEBUG.

Switches

Some parameters are not supported on all models

• internet_time - turn off and on sync with internet time.
• internet_weather - turn off and on fetching of weather from internet. WORKS ONLY ON SPECIFIC MODELS WHILE ON OTHERS CAUSES CRASHES
• ch_auto_function - turn off and on Auto function.
• dhw_thermal_cleanse_function - DHW thermal cleanse function enabled.

Sensors

Some parameters are not supported on all models

• account_ch_gas - gas use summary for CH. Not supported on all models.
• account_ch_electricity - electricity use summary for CH. Not supported on all models.
• account_dhw_gas - gas use summary for DHW. Not supported on all models.
• account_dhw_electricity - electricity use summary for DHW. Not supported on all models.
• ch_antifreeze_temperature - CH antifreeze temperature.
• ch_detected_temperature - temperature measured by thermostat.
• ch_mode - mode of CH (manual or scheduled and others).
• ch_comfort_temperature - CH comfort temperature.
• ch_economy_temperature - CH economy temperature.
• ch_set_temperature - set CH temperature.
• ch_program - CH Time Program.
• ch_water_temperature - CH Water Temperature. WORKS ONLY ON SPECIFIC MODELS WHILE ON OTHERS CAUSES CRASHES
• cooling_last_24h - energy use for pump cooling in a day.
• cooling_last_7d - energy use for pump cooling in a week.
• cooling_last_30d - energy use for pump cooling in a month.
• cooling_last_365d - energy use for pump cooling in a year.
• dhw_program - DHW Time Program.
• dhw_comfort_function - DHW comfort function.
• dhw_mode - mode of DHW. Not supported on all models.
• dhw_comfort_temperature - DHW storage comfort temperature. Not supported on all models.
• dhw_economy_temperature - DHW storage economy temperature. Not supported on all models.
• dhw_set_temperature - set DHW temperature.
• dhw_storage_temperature - DHW storage temperature. Not supported on all models.
• dhw_thermal_cleanse_cycle - DHW thermal cleanse cycle.
• electricity_cost - Electricity cost.
• errors_count - active errors (no actual errors to test on).
• gas_type - Gas type.
• gas_cost - Gas cost.
• heating_last_24h - energy use for heating in last 24 hours. Not supported on all models.
• heating_last_30d - energy use for heating in last 7 days. Not supported on all models.
• heating_last_365d - energy use for heating in last 30 days. Not supported on all models.
• heating_last_7d - energy use for heating in last 365 days. Not supported on all models.
• mode - mode of boiler (off or summer or winter and others).
• outside_temperature - outside temperature. Not supported on all models.
• signal_strength - Wifi signal strength.
• units - Units of measurement
• water_last_24h - energy use for water in last 24 hours. Not supported on all models.
• water_last_30d - energy use for water in last 7 days. Not supported on all models.
• water_last_365d - energy use for water in last 30 days. Not supported on all models.
• water_last_7d - energy use for water in last 365 days. Not supported on all models.

Binary sensors

Some parameters are not supported on all models

• ch_auto_function - CH AUTO function status.
• ch_flame - CH heating ongoing.
• ch_pilot - CH Pilot mode.
• dhw_flame - DHW heating ongoing. This parameter is not reported by boilers and is approximated based on multiple parameters.
• dhw_thermal_cleanse_function - DHW thermal cleanse function.
• flame - CH and/or DHW heating ongoing.
• heat_pump - Heating pump status.
• holiday_mode - Holiday mode status.
• internet_time - Internet time status.
• internet_weather - Internet weather status. WORKS ONLY ON SPECIFIC MODELS WHILE ON OTHERS CAUSES CRASHES
• changing_data - API is attempting to configure requested data. API specific sensor.
• online - Online status. Indicates if API has communication with the heater. API specific sensor.
• update - API update status. API specific sensor.

Example of configuration.yaml entry

ariston:
  username: !secret ariston_user
  password: !secret ariston_password
  switches:
    - internet_time
    - internet_weather
  sensors:
    - ch_detected_temperature
    - ch_mode
    - ch_comfort_temperature
    - ch_economy_temperature
    - ch_set_temperature
    - dhw_set_temperature
    - errors_count
    - mode
    - outside_temperature
  binary_sensors:
    - changing_data
    - online

Services

ariston.set_data - Sets the requested data.

Service attributes:

• entity_id - mandatory entity of Ariston climate.
• for the rest of attributes please see Developer Tools tab Services within Home Assistant and select ariston.set_data. You may also directly read services.yaml within the ariston folder.

Service use example

service: ariston.set_data
data:
    entity_id: 'climate.ariston'
    ch_comfort_temperature: 20.5

Some known issues and workarounds

Climate and water_heater entity become unavailable

Since integration interacts with server, which interacts with boiler directly or via gateway, it is possible that some link in the chain is not working. Integration is designed to constantly retry the connection (requests are sent more reearely in case of multiple faults to reduce load on whole chain). Mostly connection recovers in time, but sometimes restart of router or boiler can help (but not always).

Only part of data becomes unavailable after it was available

Even though many functions are not accessible via integration once boiler configuration (parameter 228 in the menu) changed from 1 (boiler with water heater sensor) to 0 (default configuration without sensor), possibly due to packets corruption on the way or some specific bit sequence. It caused Genus One model not being able to handle DHW. The solution is to enter boiler menu directly and change the value of parameter 228. Also boiler might require restart (complete loss of power).

Unexpected status or temperature reported

For example CH temperature set to 0, which is not in supported range. Try to log in into https://www.ariston-net.remotethermo.com and change the value there. If it does not help try disconnecting heater from electricity and connecting again.