Tiemme 4Heat Stove WiFi Controller

Development
337

@Sava

I think that AT commands were used for the Tiemme gsm modem,

In the official 4Heat app it only uses AT commands for that, for the status(diferent on/off) and to change the temperature set it uses rs232, not same that the new board so what I would do is see what rs232 commands your stove uses, in this example in the non-colored rows are the datapoints that change when the stove is on and off. on my stove

https://www.solarweb.net/forosolar/attachments/usuarios-biomasa/32202d1734190836-comunicacion-rs232-modulo-wifi-4heat-tiemme-i3-i5-.xls

Since I don’t have HA I’m trying to make a program in Arduino IDE and mqtt.
For Micronova boards it is solved and is much more difficult because it use a specific half-duplex transmission with checksum and easier because it uses allways the same datapoints, any help is welcome.

338

Hello. I have a stove with NG01 board. I have tested the solution with Wemos D1 mini and was working good for 6-7 hours, after that the communication with board froze and I had to power off and on the stove to reestablish communication. After 6-7 hours had same problem again. The problem is that it does look to be functional but is not, the stove appear to be working in HA, only if you check the temperatures you realize that the data froze. With original 4heat the stove status became Unavailable when the communication is lost. I suspect the rs232 to ttl converter to be the problem, even is the model with holes and powered at 3.3V. Please advise what to do and point me to a problem free converter (there is a link to aliexpress but there are no sales of the product / no feedback so I don’t know if it is a valid solution). Thank you!

339

@gregoriohc

I have checked the datapoints again and they work on my stove, it seems that your datapoints are different even set temperature.

Is there any document where I can get a list of possible datapoints form my board?

I don`t know because they are specific for a board an set up, so to know the datapoints of my stove and set up, I have made an excel file, non coloured rows are my possible datapoints

https://www.solarweb.net/forosolar/attachments/usuarios-biomasa/32202d1734190836-comunicacion-rs232-modulo-wifi-4heat-tiemme-i3-i5-.xls

If that is what you want, the procedure is explained here in English/Spanish

https://www.solarweb.net/forosolar/usuarios-biomasa/58946-comunicacion-rs232-wifi-4heat-tiemme-sustitucion-esp.html

As I know little about programming and only in Arduino IDE, and I have made myself the program , the procedure is mainly based on hardware but if you know programming you can make another program or add to this one that is tested a datalog file, that records the board responds and you do not need a datalogger.

About the fan.

It works as its set up TPar Tp03 Heating Fan Menu, P06 Heating power 1= The same as combustion power 2= proportional to the exhaust temperature 3= proportional to the local room temperature.

How to change the volts?

If you know the datapoints with air or rair

If you don’t know maybe by brute force changing in TPar Tp03 Heating Fan Menu F01(0-230V) power1……F05(0-230V) power 5

That you can also change by rs232

Datapoints F01 A20579000000000000 ……, F05 A20583000000000000

Tell me what happens

EDIT

I understand that the firmware is different as mine is from a distinct Brand and Model.

The Mb100 Tiemme board has only 2 firmwares Air and hydro, and only two technical manuals Air and hydro

340

Hello can I use WS-24962 to connect MB100 with HA? somebody to help me with this?

341

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With the last HA update there are errors and 4Heat is not starting. Please consult the changes you have to make in the code so it work again. You can find the topic of the errors in here and the solution in here

342

How do you power the wemos d1 mini board? Through the Tiemme board or with an external power supply.

Where to buy the rs232-ttl converter my post 235.

If you use a wemos d1 mini board you can power it at 5 volts or 3.3V because it has 2 outputs, if you use an esp32 3.3V because it has only one output.

Be careful with the rs232-ttl converter because it may have the pinout wrongly printed see post above

343

Thank you for answer. I have an Wemos D1 mini powered by 5V external adapter thorough the USB connector and the rs232-ttl converter is powered from 3.3V Wemos pin. I will buy the converter you indicated and try. Thank you very much for your work. Have a great day!

344

Hi, I have purchased a Dielle brand hydro stove that comes with a Wikey WiFi adapter. I want to try to view the data from HA. So far I registered in the dielle app (I hope this is enough and I don’t have to do it in the “4heat” app since I think they have blocked my server here.
I also added the 4time integration to HA through hacs but, when I go to add the integration in HA, I get the following error:
“{“message:” Invalid handler specified’)”

In the HA log it tells me the following:
Registrar: homeassistant.config_entries
Source: config_entries.py:3314
First occurred: 12:08:42 (2 occurrences)
Last recorded: 22:04:58

Error occurred loading flow for integration 4heat: cannot import name ‘TEMP_CELSIUS’ from ‘homeassistant.const’ (/usr/src/homeassistant/homeassistant/const.py)

in the folder /usr/src I don’t have the homeassistant folder or any other files.
What do I need to create/do to make it work?

345

Can you help me with this? Môžeš mi pomôcť s pripojením do HA?

346

Have same problem
Aun solutions?

Registrador: custom_components.4heat.switch
Fuente: custom_components/4heat/switch.py:109
integración: 4Heat Stove (documentación)
Ocurrió por primera vez: 16:59:37 (46 ocurrencias)
Última vez registrado: 17:21:44

  • ‘30001’
  • ‘30002’
347

@markchang87

Have you tried the answer that was given to your question and it doesn’t work?

348

until yesterday the on-off command worked perfectly… today however when I try to turn it off, it gives me this error

[14:51:44][D][switch:016]: ‘State’ Turning OFF.
[14:51:44][D][fourheat:166]: Listener for I30254 not found. Data: 30.30.30.30.30.30.30.30.30.30.30.30 (12)

349

After the update to v0.6.1 the off switch is buggy. I have to press it twice at least after a time, and I get these errors one after another in the logs.
@zauberertz Have you noticed something similar?

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350

Official Tiemme 4Heat app only worked with the 4heat module, but now it can work with other modules, for instance the new 4Heat lite module uses rs485 communication and possibly modbus.

Looks like Tiemme has made big changes, and now it is very difficult to configure any 4heat or 4Heat lite module, because the change from temporary local wifi(4HEAT WI-FI) to the cloud has a lot of problems.

This also happens if you uninstall/remove the 4Heat module and try to install it again.

351

I have made last year repository for those who want to use esp module and have NG21 board. This is nothing more then just board specific (and my own heater specific) yaml setup also with some initial hardware setup instructions.
It is almost same as I already posted somewhere above but it has some little improvements. Even with same board every heater is bit different so it probably needs some tweaking with different heaters but it should be much more simple to someone who has NG21 to get initial information from one place and then modify it further to her own needs.

352

I have the same problem. the blue LED is not lit. the module does not want to be configured.
The phone does not connect to the 4heat module network. Give me advice.

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I bought a new 4heat module, and again the same problem

353

ngenov

As I said in my last post of January 26, 2025, the 4Heat app has big problems at least on Android.

The Android app has been updated at least twice since then.

Try using an iPhone and its app 4Heat . If it woks then you can try log into the Android app with iPhone data,

1 Like
354

The problem usually happens in a later step, but the 4Heat app only works with generic Tiemme boards

Some stove manufacturers have customized 4heat app, but they only work with their stoves, for instance, Diell, Lasian, etc. and generic 4Heat module doesn’t work with them

On these stoves, if the 4Heat module isn’t yours, the error you mentioned appears when the ID is detected.

So if your stove has a custom app, I think you should use its app and its module, to pass that step

Old versions app 4Heat that said informatica

https://apkpure.com/es/4heat/com.ionicframework.wifi4heat389999

355

Благодаря, камината е Mareli. До сега работеше нормално с 4heat модула.

356

Hello. Thanks for your effort @leoshusar for the ability to build a sub 10$ module that is heaps better than the original solution! Amazing work! Also kudos to all the participants here in this topic :clap:

I am rocking KEPO MC15 stove with a board looking like NG21. Different variants of KEPO MC/AC stoves come with the same Tiemme Electronica board, at least in my experience.

I don’t get water pump status over J30084 (always OFF) and airflow over J30026 (always 0). Also fan voltage shows 0V, but rpms are correct. Haven’t tested reading or deleting errors yet, but I suppose it should work. The ON/OFF switch and everything else is fine, except some different power stages where the name of the value should be adjusted. But that’s to be expected with different stoves.

I used @catdogmaus NG21 yaml, worked great.

I started with the DB9 style MAX2323 (with 4 capacitors), but that gave me problems (stove hanging, data loss etc…), so I switched to the popular little converter with 8 capacitors and 7 soldering points, that worked flawlessly.

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