[PsYcHe]

Not sure what's causing the clicking unless there's something silly going on with the climate unit.
I am slightly puzzled as to where they got the shorting bar if there was a relay in there before as the bar would be missing (or is that not your picture?)

The relay should have 5 connections on the bottom, that may make a difference as most have only 4 as they are simply on/off where the solar roof one switches between two power sources.