I stumbled on a less partial english leaflet, which prefers R over the character A, and sometimes uses z instead of "r", otherwise nothing much new other than a confirmation of your findings.

But it has an interesting explanation for ofc: 1 -> 'ENT confirms temperature', 0 -> 'ENT turns heater off and on' at top level.

And it has an explanation for SC: this is the display offset for the MCU's internal temperature notion. Which was consistently 10C too high for me :).

https://www.vaza.gr/image/data/Datasheets/1237-1.pdf

Which seems to taken from a screen separator with similar firmware, where the too-terse leaflet contains both English and Chinese:

https://m.media-amazon.com/images/I/B1t04B3bedL.pdf

Sorrowfully, that's merely images converted to PDF without pasteable Chinese characters, but on first blush, the English version seems 1:1 to reflect the Chinese text (incl. its use of 'R'), and similarly still lacking details on RL1, D, Rz, T...

Wow this is great, thanks much!

@bkw777: did you see @snaeker58's comments (I got them due to email subscription, but I still cannot see it on the gist on github proper)?

snaeker58 provided 4 jpegs incl. his defaults as a formatted manual. And more importantly, in them he makes sense of our "misread" 2-letter abbreviations in the settings menu, and provides documentation for our missing/incomplete parameters (incl. what's the use of the parameters for P=0).

So I think that we've finally got ourselves a proper manual :)

A big Thank You to snaeker!

@bkw777: did you see @snaeker58's comments (I got them due to email subscription, but I still cannot see it on the gist on github proper)?

snaeker58 provided 4 jpegs incl. his defaults as a formatted manual. And more importantly, in them he makes sense of our "misread" 2-letter abbreviations in the settings menu, and provides documentation for our missing/incomplete parameters (incl. what's the use of the parameters for P=0).

So I think that we've finally got ourselves a proper manual :)

A big Thank You to snaeker!

I had a a few typos in them and deleted them again, I have run multiple tests on what the first parameter does, but I just cant figure it out.
I didn't want to upload the pdf with wrong infos so I deleted the images again. If you want I can comment it again once im home.
It was nicely formatted but very sloppy work. Sorry.

We would definitely still appreciate those other things that you did seem to figure out, the function of a few of the settings I still have blank. They sounded reasonable. If they are still just guesses I don't mind testing to nail it down.