Hot water current temperature is 0

[en-ver]

In HA hot water current temp is 0 while I can see the correct temperature from the service menu on my boiler (Buderus Logamax U072)
Please advise how to fix it

[IvAn-72]

Hi. Do you have a single or double boiler? For single-loop, you need to edit the library OpenTherm.h
Tr, // f8.8 Room temperature (°C)
Tboiler, // f8.8 Boiler flow water temperature (°C)
Tstorage, // f8.8 Solar storage temperature (°C)
Toutside, // f8.8 Outside temperature (°C)
Tret, // f8.8 Return water temperature (°C)
Tdhw, // f8.8 DHW temperature (°C)

[en-ver]

@IvAn-source-git it's single-loop
Where this file is located?
I can't find it in ESPHome-OpenTherm folder.
Please advise.

[en-ver]

ok, from your repo I understood I simply can download it to my RPI and change it there.
but what exactly do I have to change there?

[IvAn-72]

Take everything from my repo. A lot has been fixed for our boiler (U)72 and Gaz60000)

[bartmarchand1]

@IvAn-source-git what do you mean with a single or double loop?
I have a Bulex Thermomaster 28F, for heating and hot tap water production. Is this the double loop?

[IvAn-72]

The single-circuit boiler works with an indirect heating boiler for the preparation of hot water (for house). The double-circuit boiler produces hot water immediately (for appartement).

[IvAn-72]

For single-circuit boilers with an indirect heating boiler, the boiler outputs the DHW temperature in ID29. There may be easier solutions, but I just changed "ID=26: DHW temperature" and "ID=29: Solar storage temperature"

[en-ver]

@IvAn-source-git it didn't help

In addition, I found out that some other data is also absent

[en-ver]

As you can see there is definitely incorrect data for:

• external temp
• water pressure
• return temp
  I'm not sure if it affects anyhow the PID operation but I would love to get it working :)
  Please advise! :)

[IvAn-72]

Уже писал. Берите всё с моего репо. Все котлы разные, со своими датчиками. Мой котел не передает внешнею температуру, давление, температуру обратки, соответственно эти запросы отключены.

[rsciriano]

Probably fixed by #52