Thanks for all your help. Any pointers on where to start when making rules?

Ah ok so your saying only possible with two separate setups that I then have to swap manually? Fair enough, shame as I was hoping it could be done automatically. Thanks for your help

Maybe it wasn't to clear, I'd like it to control automatically against these two perameters. 1. Hold a 10 c delta between water and ambient temperature 2. Maintain a water temperature bellow 30 c Is there a way of adding in some sort of temperature override to an existing controller or some other method? Hope this is more clear. Many thanks for any help

Hi there, Thanks for your reply! Do you mind just explaining in layman's what you mean by swapping to a different profile? Still learning the software. Thanks!

Hi chaps, Please can someone help me achieve this if it is at all possible? I currently run my radiator fans on a set point controller to maintain a 10 degree delta between ambient and water temperatures. What id like to do is have a separate controler set up for the same fans that will override the 10 degree delta when my water temperature reaches 30 C or so. For examples sakes here's a situation I have often: 1. PC is running cool and quiet maintaining 10 degree delta 2. Room temperature incre...