Renault Clio 2005 - Engine fan not cutting in? Overheating.?

Next to your battery theres a relay box, theres 2 relays in there that are bigger than the rest, the one on the right is the relay for your fan, before you touch that, unplug the electric fan and put a direct feed to it to make sure it works, the fan is made by valeo and are prone for burning out, if it works then you need to look and test the relay