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Platformio code for using a ESP8266 to read the serial data from a IVT-490 series heat pump.

The project is based on https://github.com/mskorge/ivt490-esp8266 and https://github.com/jorgeassuncao/MAID-EM

Each value will be sent to a MQTT server where the main topic is #board#MAC" and a subtopic for each value

There is a webserver that you can use to update the firmware too.

Using Home Assistant I have the following configuration:

  • platform: mqtt device_class: temperature name: "IVT_495_framledning_temp" state_topic: 'ESP8266_5ED7/IVT_490/framledn' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_ute_temp" state_topic: 'ESP8266_5ED7/IVT_490/ute' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_tappvarmvtopp_temp" state_topic: 'ESP8266_5ED7/IVT_490/tappvarmvtopp' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_varmevmitt_temp" state_topic: 'ESP8266_5ED7/IVT_490/varmevmitt' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_varmevbotton_temp" state_topic: 'ESP8266_5ED7/IVT_490/varmevbotton' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_inne_temp" state_topic: 'ESP8266_5ED7/IVT_490/inne' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_hetgas_temp" state_topic: 'ESP8266_5ED7/IVT_490/hetgas' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_egtemp_temp" state_topic: 'ESP8266_5ED7/IVT_490/egtemp' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt name: "IVT_495_tryckvakt" state_topic: 'ESP8266_5ED7/IVT_490/tryckvakt'
  • platform: mqtt name: "IVT_495_hogtryck" state_topic: 'ESP8266_5ED7/IVT_490/hogtryck'
  • platform: mqtt name: "IVT_495_lagtryck" state_topic: 'ESP8266_5ED7/IVT_490/lagtryck'
  • platform: mqtt name: "IVT_495_egsemester" state_topic: 'ESP8266_5ED7/IVT_490/egsemester'
  • platform: mqtt name: "IVT_495_kompressor" state_topic: 'ESP8266_5ED7/IVT_490/kompressor'
  • platform: mqtt name: "IVT_495_schuntoppen" state_topic: 'ESP8266_5ED7/IVT_490/schuntoppen'
  • platform: mqtt name: "IVT_495_schuntstangd" state_topic: 'ESP8266_5ED7/IVT_490/schuntstangd'
  • platform: mqtt name: "IVT_495_cirkpump" state_topic: 'ESP8266_5ED7/IVT_490/cirkpump'
  • platform: mqtt name: "IVT_495_flakt" state_topic: 'ESP8266_5ED7/IVT_490/flakt'
  • platform: mqtt name: "IVT_495_larm" state_topic: 'ESP8266_5ED7/IVT_490/larm'
  • platform: mqtt name: "IVT_495_Extern_P2" state_topic: 'ESP8266_5ED7/IVT_490/Extern_P2'
  • platform: mqtt device_class: temperature name: "IVT_495_LL_GT1" state_topic: 'ESP8266_5ED7/IVT_490/LL_GT1' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_bvframledning" state_topic: 'ESP8266_5ED7/IVT_490/bvframledning' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_UL_GT1" state_topic: 'ESP8266_5ED7/IVT_490/UL_GT1' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_LL_GT3_2" state_topic: 'ESP8266_5ED7/IVT_490/LL_GT3_2' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_ULT_GT3_2" state_topic: 'ESP8266_5ED7/IVT_490/ULT_GT3_2' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_UL_GT3_2" state_topic: 'ESP8266_5ED7/IVT_490/UL_GT3_2' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_LL_GT3_3" state_topic: 'ESP8266_5ED7/IVT_490/LL_GT3_3' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_BV_GT3_3" state_topic: 'ESP8266_5ED7/IVT_490/BV_GT3_3' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_extravv1" state_topic: 'ESP8266_5ED7/IVT_490/extravv1' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_extravv2" state_topic: 'ESP8266_5ED7/IVT_490/extravv2' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt device_class: temperature name: "IVT_495_extravv3" state_topic: 'ESP8266_5ED7/IVT_490/extravv3' unit_of_measurement: '°C' value_template: "{{ ( value | float / 10 ) }}"
  • platform: mqtt name: "IVT_495_Tappv prio" state_topic: 'ESP8266_5ED7/IVT_490/Tappv prio'
  • platform: mqtt name: "IVT_495_elpatron" state_topic: 'ESP8266_5ED7/IVT_490/elpatron'
  • platform: mqtt name: "IVT_495_Tillskott_RAD" state_topic: 'ESP8266_5ED7/IVT_490/Tillskott_RAD'
  • platform: mqtt name: "IVT_495_extravv4" state_topic: 'ESP8266_5ED7/IVT_490/extravv4'
  • platform: mqtt name: "IVT_495_Default_SV2_Open" state_topic: 'ESP8266_5ED7/IVT_490/Default_SV2_Open'

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