As I said the non working element to steam off water that our air con unit produces is saving us heaps on our power bill. I expect when it first caused problems, the element was cracked. Now, the problem has become quite visible. The element is now broken through, visible in the middle of the photo, slightly up.
I have learnt while looking at stuffs about air con units on apartment balconies, that the inside unit only produces water in the summer when it is cooling. The outside unit can produce a lot of water in a short time when heating if the weather is humid. It seems it has not been humid of late here, as there has not been any water in the tray for weeks.
Melbourne's summer weather is generally dry, but at times we do have humidity.