its common courtesy to reply mate we all try to help people so it would be nice to get feedback. it must be simple if technical solved it, they must have been given more info than us
Ture Bunnyman, I should not tease, as I really really do appreciate the response. But I did post a clue with the honeywell room stat. Apparently, he connected the room stat up incorrectly (which dre m attention to the fact he hadn't installed the ailliant stat) and when tis was doneit has worked. I have no ideawrong,, given it is oly wo wires, but he did,, and when he altered it,, hey presto.
Im no expert on boilers and plumbing, but i know enough of the basics to be pretty sure the room state only controls the central heating, not the domestic hot water.