I've recently lost two airconditioners to the cute house gecko (not scientific name).
The one shorted the outdoor unit circuitry and another crawled into an indoor unit and shorted the PCB (while it was on!).
The spaces they crawl into are small but I don't think you can properly close them all off.
Any ideas?
Sad to hear, poor geckos too!
We have similar issue in a new place we bought. For the indoor unit I suspect the installers didnt seal up the hole they drilled through the wall. I am going to fill it in with silicone or expanding foam after taking off the cover.
For the outdoor unit that is harder to say. The circuitry isnt inside an enclosure? I am surprised geckos can get into it.