How to turn Off UV lamp when UV pump goes off.

[mlandscape]

Thanks, Vinny I will give the temperature one a go.

I am aware of the fallback setting as you have explained before and I already have the fallback set to ON for the UV pump. I have left the UV lamp Fallback as OFF because I would not want that ON if the pump wasn't running which is my initial request for programming.

Obviously you know far better than I do but I am not sure what you are suggesting achieves what I am after. If the pump disconnects from the head unit it doesn't necessarily mean that it has stopped working does it. ?

Can it not be resolved by referring to the A reading?