Error codes on Hybrid HVAC system about ebusd_configuration_chaffoteaux_bridgenet HOT 2 CLOSED

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I took my courage and extended the scan range to 255, I was able to gram many more codes, in multiple cases the meaning are different from yours, I think that the codes corresponding meaning are a function of the FW/HVAC plant type.

Everyone should run the brute force script and do the mapping manually

TY&BR

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Hi, sorry for the very late response, I've seen that you've solved your question.

Yes the 128 limit was here to reduce the guessing time since most of/all the codes (on my side) were discovered in this interval.
So my script has helped you, and I'm glad it has. I'll try to modify it to make it more accessible.

I “laugh” at seeing the reuse of error codes with different meanings depending on the brand, the device and perhaps the firmware version. 🤣

It has to be said that setting a limit of 255 codes with a 1-byte encoding is perhaps not the most pertinent idea in the design of this protocol.

In any case, in the event of a malfunction, unless you meet one of the brand's engineers, this will encourage service agents to replace the PCB rather than trying to diagnose it.

This already exists in the automotive industry with diagnostic boxes, and it's not the best thing the industry has produced for device repairability :D

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