Thanks for the replies guys.
Just had the air-con serviced & re-gassed, that's when I found out the air-con fan was goosed.
So I'm running with the air-con relay removed.
Not much need for air-con here, it's 1.5 C @ the moment!
However, I've heard that the disco air-con leaves a bit to be desired (in other words, it's crap.)
So a twin fan RR one should improve it.
Thanks spanishlair for the warning, I'll bring my Nanocom with me.