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A project log for Hitachi HVAC controler for HomeAssistant - ESP8266

The purpose of this project is to manage my hitachi air conditionners with the Home Assistant using ESP-8266.

vinceVince 05/21/2021 at 09:400 Comments

After many hours spend to snif the paquets here the first sharing. It was quite easy so far with the basic functions. I found 7 commands/informations out of 15. I add my investigation file

First we can find below the regular exchanged paquets every 6 sec. (Without any command)

Send by the SPX-WFG01 :


The A/C feedback


And now the command


So to here the list of adresses and content that I was able to catch.
 


There are still some question marks that have to be confirmed. And also 8 unkown information in the paquet. Maybe you have an idea ?

There are some functions that combined several of the command.


In addition, all the timer functions are managed by the the remote control itself. So only the basic commands (On/Off) are send by the remote control as scheduled previously.

According to the Hi-humo App description I should find also adresses releated to alarm functions. At this stage I'm not able to figure out how to trigger any alam from the A/C

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