Unable to get serial connection

[odeBuXTeR]

Dear,

I'm unable to communicate with my WHR. Long days to try without any result.

I succeed to compile and install your esphome configuration, and then, that's what I have :

[11:55:32][D][comfoair:631]: getting temperatures [11:55:33][D][comfoair:593]: getting error status [11:55:33][D][comfoair:603]: getting bypass control [11:55:34][D][comfoair:578]: getting fan status [11:55:35][D][comfoair:586]: getting valve status [11:55:36][D][comfoair:626]: getting ventilation level [11:55:36][D][comfoair:631]: getting temperatures ....... undefinitely

My configuration :

Wemos D1 mini PRO 3.3V, GND and RX/TX connected on a MAX3232 TTL side RX/TX and GND connected on the RS232 side On the WHR, I tried the RJ45 port, the DB9 port and the RX/TX GND of the CCEASE 's terminal block

I tried to invert RX/TX without success. Changing the max3232 module (it's the third...) without success to. Changing the esp8266 for a Wemos D1 mini without success ...

Have you ever seen this before ? What is the mistake ? Sorry to disturb you but you are my last chance.

On the "software" side, I put the comfoair.h modified to be able to compile, and the yaml file modified accordingly to the comfoair.h

Voila, all I can say is here ...

I saw that anothere guy have the same problem but no one seems to answer ... so, do you see something that can solve the matter ?

Thank you for your help Olivier

[odeBuXTeR]

I forgot just one thing in addition, I tried the "nyxnyx" repo with external components, and do the same things described before ... And the same result. My CCEASE work fine on the terminal block That's all, thanks Olivier

[odeBuXTeR]

Mistake staying ! I bought a simple esp8266mod, upload the firmware and ... voila ! All reporting is now OK. So, with 3 different Wemos D1 mini (+pro), I'm unable to make the serial connection, all is OK with this new module ! I close this issue

Thx for your work