Reverse engineer heatpump Genvex Combi 185

Hardware Heatpump
28

Thank you for the quick response! I was not sure if I needed sudo, so I did both:

~$ sudo ls -l /dev/ttyU*
crw-rw---- 1 root dialout 188, 0 jan 30 21:18 /dev/ttyUSB0
~$ ls -l /dev/ttyU*
crw-rw---- 1 root dialout 188, 0 jan 30 21:18 /dev/ttyUSB0