Hi!
Already did IR protocol and everything else, I am working with Toshiba and i can tell you there is no way they will give you any information about their comm protocol since it is a company secret so to speak. The same thing would be from let say Hyundai to give you information about how to enable on CCS plug to pull power from battery(never going to happen), so there is only for guys like us ti figure it out.
So about toshiba, I know that communication protocol for HVAC is all the same except there is some data changed when using mixed equipment, for example, you can't connect 8kw outdoor unit to 3,5kw indoor unit since you will get mismatched capacity error, but that can be fixed.
adding signals capture with saleae Logic 2(TX and RX lines)
cooling 17c vent3.zip (24.4 KB)