Daikin Altherma 3 EDLA08E2V3

[youmustcomply]

I had this heat pump system installation installed in the summer by Octopus Energy. However I am finding one Onecta application somewhat lacking in information. I have intergrated this into HomeAssistant which gives slightly more information but still lacks.

I ordered a DIYMORE ESP32 and installed ESPAltherma onto it succesfully. Connected this up to the X10A port on the main board and restarted the heat pump.

However; the main controller showed a U8-07 P1P2 Communication Error. I checked all the connections and restarted again and this time the unit just sat saying synchorising with Internal unit and stayed at 0%.

Any ideas?

[youmustcomply]

Okay, after checking all the connections I realised I had connected what should of been the Ground on the ESP to a 3.3V input. No idea how i did this. I will re-test tomorrow.

[Alibloke]

@youmustcomply can you tell me which definition file you used with the unit? Was it ALTHERMA(LT_DA_04-08KW).h?

[youmustcomply]

@Alibloke I used the default one and then just picked off the measurements I wanted.

[Alibloke]

@youmustcomply Thanks! Slightly off topic, but I'm about to get the 8kW unit installed from Octopus in just under three weeks. How is it for you?

[youmustcomply]

@Alibloke Yes that is what I had installed back in June. The power use has just started increasing alot with the low temps. Worst I have seen is 20kW in a day for heat. House is running pure weather compensation so I am just using a weather curve for the flow temp. I knock this back 3 points from 7pm till 3am.

[neildsb]

Hi @youmustcomply sorry to be a pain, I also have an 8kW unit from Octopus and was disappointed with the MMI/app and lack of COP calculation, just connected up the ESPAltherma with an M5StickCPlus

I have problems with exposing additional attributes, do I have the data pins the wrong way around (the power is good 4.85V)?

[youmustcomply]

Hi @youmustcomply sorry to be a pain, I also have an 8kW unit from Octopus and was disappointed with the MMI/app and lack of COP calculation, just connected up the ESPAltherma with an M5StickCPlus

I have problems with exposing additional attributes, do I have the data pins the wrong way around (the power is good 4.85V)?

Have you un-commented the attributes you are wanting to see within the definition file you are using?

[neildsb]

TBH it's my 1st time using PlatformIO (ESPHome is my go to in home assistant), yes I think have uncommented some attributes

[youmustcomply]

Thats good, there are a lot of duplicates and a lot don't work. I am at work tonight but I should be able to have a look tomorrow and see which ones I have used and let you know.

[neildsb]

Thats good, there are a lot of duplicates and a lot don't work. I am at work tonight but I should be able to have a look tomorrow and see which ones I have used and let you know.

really sorry, got my TX and RX pins the wrong way around; if you could share the useful attributes for the 8kW unit that would be fab, have a great evening

[youmustcomply]

These are the ones i am succesfully using within the DEFAULT.h file:

{0x10,0,217,1,-1,"Operation Mode"}, 0x10,1,304,1,-1,"Defrost Operation"}, {0x20,0,105,2,1,"Outdoor air temp."}, {0x21,0,105,2,-1,"INV primary current (A)"}, {0x21,2,105,2,-1,"INV secondary current (A)"}, {0x30,0,152,1,-1,"INV frequency 1 (rps)"}, {0x30,1,152,1,-1,"INV frequency 2 (rps)"}, {0x30,0,211,1,-1,"Fan 1 (step)"}, {0x60,2,303,1,-1,"Thermostat ON/OFF"}, {0x60,2,302,1,-1,"Freeze Protection"}, {0x61,6,105,2,1,"Liquid temperature(R3T)"}, {0x61,8,105,2,1,"Inlet temperature(R4T)"}, {0x61,10,105,2,1,"DHW temperature(R5T)"},

[neildsb]

These are the ones i am succesfully using within the DEFAULT.h file:

{0x10,0,217,1,-1,"Operation Mode"}, 0x10,1,304,1,-1,"Defrost Operation"}, {0x20,0,105,2,1,"Outdoor air temp."}, {0x21,0,105,2,-1,"INV primary current (A)"}, {0x21,2,105,2,-1,"INV secondary current (A)"}, {0x30,0,152,1,-1,"INV frequency 1 (rps)"}, {0x30,1,152,1,-1,"INV frequency 2 (rps)"}, {0x30,0,211,1,-1,"Fan 1 (step)"}, {0x60,2,303,1,-1,"Thermostat ON/OFF"}, {0x60,2,302,1,-1,"Freeze Protection"}, {0x61,6,105,2,1,"Liquid temperature(R3T)"}, {0x61,8,105,2,1,"Inlet temperature(R4T)"}, {0x61,10,105,2,1,"DHW temperature(R5T)"},

I have exposed a few more so I can calculate COP, here is my template if it helps? I am using a ShellyEM to measure power rather than using the Daikin

Flow sensor (l/min) Leaving water temp. before BUH (R1T) Inlet water temp.(R4T)

- name: "COP-power"
  unique_id: "espaltherma_cop"
  unit_of_measurement: 'COP'
  state: >
      {% if is_state_attr('sensor.esp_altherma','Operation Mode', 'Heating') and is_state_attr('sensor.esp_altherma','Freeze Protection', 'OFF')  %} 
      {{ 
      ((state_attr('sensor.esp_altherma','Flow sensor (l/min)')| float * 0.06 * 1.16 * (state_attr('sensor.esp_altherma','Leaving water temp. before BUH (R1T)') | float - state_attr('sensor.esp_altherma','Inlet water temp.(R4T)')|float) )
      /
      (states('sensor.heat_pump_power') | float /1000 ))
      |round(2)
      }}
      {% else %} 0 {%endif%}

[youmustcomply]

Thats interesting, what is the unit thats being provided by the shelly?

I've so far been unsuccessful in calculating the COP

[neildsb]

Thats interesting, what is the unit thats being provided by the shelly?

I've so far been unsuccessful in calculating the COP

Watts -

[youmustcomply]

So I have created a new file under sensors which i keep all my sensor config files to try and keep it separate for each system.

The issue i am having is actually getting it to like the config. I have temporarily used my Victron reading for Watts as a test. This is everything I have in my ESP.yaml file:

template: sensor:

• name: "COP-power" unique_id: "espaltherma_cop" unit_of_measurement: 'COP' state: > {% if is_state_attr('sensor.none_althermasensors','Operation Mode', '> {{ ((state_attr('sensor.none_althermasensors','Flow sensor (l/min)')| fl> / (states('sensor.victron_system_consumption_l1') | float /1000 )) |round(2) }} {% else %} 0 {%endif%}

Any ideas?

[neildsb]

So I have created a new file under sensors which i keep all my sensor config files to try and keep it separate for each system.

The issue i am having is actually getting it to like the config. I have temporarily used my Victron reading for Watts as a test. This is everything I have in my ESP.yaml file:

template: sensor: - name: "COP-power" unique_id: "espaltherma_cop" unit_of_measurement: 'COP' state: > {% if is_state_attr('sensor.none_althermasensors','Operation Mode', '> {{ ((state_attr('sensor.none_althermasensors','Flow sensor (l/min)')| fl> / (states('sensor.victron_system_consumption_l1') | float /1000 )) |round(2) }} {% else %} 0 {%endif%}

Any ideas?

it looks like you are missing loads of values, also check the naming of items

• name: "COP-power" unique_id: "espaltherma_cop" unit_of_measurement: 'COP' state: > {% if is_state_attr('sensor.esp_altherma','Operation Mode', 'Heating') and is_state_attr('sensor.esp_altherma','Freeze Protection', 'OFF') %} {{ ((state_attr('sensor.esp_altherma','Flow sensor (l/min)')| float 0.06 1.16 * (state_attr('sensor.esp_altherma','Leaving water temp. before BUH (R1T)') | float - state_attr('sensor.esp_altherma','Inlet water temp.(R4T)')|float) ) / (states('sensor.heat_pump_power') | float /1000 )) |round(2) }} {% else %} 0 {%endif%}

use the developer tools to check your templates

[youmustcomply]

Now that Xmas is out the way I actually have some time to play around. My copy and paste failed before and thats why it looked like it was missing loads of values. I have now successfully got it showing my COP within the developer tools and templates.

The part I am now struggling is where do i now put this. I have put it under my ESP config however it just gives me errors and about block start and block end.