I have just investigated why my fan was not working.
I have a cyclone3 alram fitted and normally ride on the remote start feature, this is the problem!
The remote start shorts across the ignition circuit allowing you to do everything except have the fan working, the reason is that the fan power circuit runs through the ignition switch.
Once I have a little time I will adapt mine to also short across the fan circuit, I'll let you all know the results and solution once I have done and tested it.
Radiator fan not working "cyclone alarm fitted".
Radiator fan not working "cyclone alarm fitted".
It's only easy if you know the answer!