You nailed it, once more.
This is the whole issue, IMHO.
Some manufactuers and importers of ACs to Thailand count of the fact that most ACs here are rarely used.
Most just sit there, for show, demonstrating to neighbors that the owner has enough money to buy an AC.
But, do they have enough money or will to actually run the AC whenever the temp gets above 23, or when the relative humidity gets above 55%?
If these same machines were installed in a country such as the USA, and in Arizona, I just wonder how long they might last.
Arizona is not a place where most people are afraid to run their ACs.
Also, where was that Panaxonic manufactured?
Thailand?
Malaysia?
China?
Japan?
This would be very helpful to know.
And, what is the EER or SEER rating on the machine?
If the machine is made in Japan, then it will be very reliable, and feel free to use it as much as you want, without a machine failure.
But, if not?
I would be very worried.