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WHR 930

Manage a Storkair WHR 930 system using MQTT.

Installation and configuration

This (python) code uses some libraries that need to be installed. Assuming you are using a Raspberry Pi or another Debian based Linux distribution, the following command's will install the dependencies

$ sudo apt-get install python3-serial python3-pip python3-yaml
$ sudo pip3 install paho-mqtt

After installing the dependencies, clone this repository and modify the MQTT settings in src/whr930.py and run sudo make install.

$ git clone https://github.com/Mosibi/whr_930.git
$ vi src/whr930.py
$ sudo make install
$ sudo systemctl start whr930.service

Home Assistant configuration

Image

input_number:
  set_wtw_ventilation_level:
    name: Set ventilation level
    initial: 2
    min: 0
    max: 3
    step: 1
    mode: box

automation:
  - alias: Ventilation level slider moved in GUI
    trigger:
      platform: state
      entity_id: input_number.set_wtw_ventilation_level
    action:
      service: mqtt.publish
      data_template:
        topic: house/2/attic/wtw/set_ventilation_level
        retain: false
        payload: "{{ states('input_number.set_wtw_ventilation_level') | int }}"

customize:
  sensor.wtw_intake_fan_speed:
    icon: mdi:fan
  sensor.wtw_exhaust_fan_speed:
    icon: mdi:fan

sensor:
  - platform: mqtt
    state_topic: "house/2/attic/wtw/outside_air_temp"
    name: "WTW Outside Temperature"
    qos: 0
    unit_of_measurement: '°C'
  - platform: mqtt
    state_topic: "house/2/attic/wtw/supply_air_temp"
    name: "WTW Supply Temperature"
    qos: 0
    unit_of_measurement: '°C'
  - platform: mqtt
    state_topic: "house/2/attic/wtw/return_air_temp"
    name: "WTW Return Temperature"
    qos: 0
    unit_of_measurement: '°C'
  - platform: mqtt
    state_topic: "house/2/attic/wtw/exhaust_air_temp"
    name: "WTW Exhaust Temperature"
    qos: 0
    unit_of_measurement: '°C'
  - platform: mqtt
    state_topic: "house/2/attic/wtw/ventilation_level"
    name: "WTW Ventilation Level"
    qos: 0
  - platform: mqtt
    state_topic: "house/2/attic/wtw/filter_status"
    name: "WTW Filter Status"
    qos: 0
  - platform: mqtt
    state_topic: "house/2/attic/wtw/intake_fan_speed"
    name: "WTW Intake Fan Speed"
    qos: 0
    unit_of_measurement: '%'
  - platform: mqtt
    state_topic: "house/2/attic/wtw/exhaust_fan_speed"
    name: "WTW Exhaust Fan Speed"
    qos: 0
    unit_of_measurement: '%'