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Sorry, bit of a novice and don't really understand. What do you mean by Mother? Thank you so much for your help-I hope I have responded correctly as I am completely new to writing on a forum and it is for my Dad!

Hello, Could anyone tell me if you can test a Danfloss HSA3 motorised valve when removed from the central heating system - by applying power to it? If so, could anyone advise how this can be done? Thanking you in advance