I dont know if you received my last mail because i pressed the wrong key.
( I am, after all, a 70 year old computer illiterate. ) But at the moment all appears well & your advice was extremely well received .
Many thanks for your expert knowledge.
My Biasi M90 24S boiler keeps cutting in & cutting out despite the fact that the stat. is turned right down & there is no water running. What might the problem be?