This clicking , when the temp is hot , is a relay clicking out , and resetting itself when the car cools down , when it is hot inside the car is when this happens, the relay , is made to reset itself after getting hot, and this one has a defect, its resetting at to low of temp , you may have to replace the relay or to find it , have some one while its clicking , take a open or closed reading , and find it, then replace it, it could be the main relay



