Air Con Game

I was going through some old emails and came across this gem from when we worked in the office. 

Hi all
We are aware that the air conditioning is not working correctly and that it is too hot upstairs.  Unfortunately the cupboard where the controls are is locked at present so there is nothing we can do about it.  
The key is being located and brought across but even then, the A/C has been set up in zones but we don’t know which zone is which.  The person who does know how to control it is on holiday for a couple of days. 

How can you have that many levels of failures? The person who controls the Air Conditioning is on holiday, the key is in another building, but even if they managed to find it, the controls can’t be understood. It sounds like some convoluted sequence of puzzles for a point-and-click adventure game.