AC radiator fan won’t turn on

[Mikesyron]

I have a 2011 Jaguar XF. My A/C only works if the car is going about 40 mph or higher.
It’s because the electric radiator fan isn’t coming on when A/C is turned on.
Had the system purged and refilled and bought a new electric fan but still acting the same
The fan actually works with the engine/radiator temperature and runs when needed for that but not for the A/C.
There must be a relay somewhere that controls the fan for the A/C right?
Any help would be appreciated
Thanks,
Mike