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hi its a horstman channel plus H27XL Series 2 Two channel programmer drayton flowshare 2 system motorised valve any help ?

i have just replaced a new programmer which i believe to be correct, and set the haeting and hot water to default settings and everything was fine, then we changed so that the hot water would come on at different times and the water is scoulding hot i think all the time, when the heating and...