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Adding model Kazumi. I have both a Seiya ( RAS-B07J2KVG-E, RAS-07J2AVG-E ) and a Kazumi ( RAS-B22J2KVSG-E, RAS-22J2AVSG-E ).
Key of this change is the additional swingmode control codes, see heatpump.py, swingtoint = {"off": 49, "on":65, "on-h":66, "on-vh":67} .
Kazumi has also two horizontal swingmodes (I called them 'on-v' and 'on-vh'). When the unit responses with one of those two swingmode states, the original code crashes. You won't see the crash through the mqtt messages, only when using serial. You will see 'Exception occurred', preceded by the unknown control code '66' or '67'.
I have also added the version number to the firstrun message.
The Homeassistant Climate config can be updated to handle 'on-v' and 'on-vh', remove comment when needed.