Hi, I have a Marea Weekend TD 100 and the raditor cooling fan refuses to switch off. I have had to unplug it. I changed the switch that screws into the radiator , thought that might do it, but no.
Any ideas would be gratefully received........Phil

Hi Phil and welcome to the forum

Not sure what kind of switch you replaced but...

The switch is a neutral feed so an earth on the wiring would keep the fan running. This is the most likely cause on fans controlled from a radiator switch.

If you have a temp sensor rather than a simple switch then it could be the relay burnt on.

Hi, Yes as the previous messge says, these models have a common problem with the fan relay either short circuiting or burning out the relay contacts so it cant pass any current. i would think this is your problem! Oh and its usy=ually found adj to the battery.