Nope, HA has to assume that everything worked. Without a back channel, that is directly connected to the sensor, it will always be an assumption.
But nonetheless, why not using the simpler and possibly cheaper way to get to a biderectional solution. The ESPs and the parts for an ESP dongle are not even worth mentioning. In theory and using all ways to save money you will be under 10.-€ / $10 for a known working and actively developed dongle, that gives you the whole experience.
Sure, first thing is to enable the
debug log especially for this component. You do that by adding this to your
default: WARNING # or DEBUG or INFO
I hope this is the correct spelling for the component. Can’t test it, as I don’t have it running anymore (that’s why I recommend the ESPHome-based approach).
Other necessary infos would be the label of the A/C (Media is always the manufacturer, but labels the A/Cs with a lot different brands like OlimpiaSplendid, Mr.Cool, …) and the dongle you are using. All original dongles are either OSK-102 or OSK-103.
I just need to take a few pics to publish a small guide about how the ESPHome based approach is working (including buying instructions). As I said, it is the better approach towards your A/C as this component here in this thread will be discontinued rather sooner than later. My recommendation for you: wait for the guide and decide after you read it. I’m quite sure you will end up with the ESPHome based approach.