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Hi, I have a system boiler fitted to a "Y" Plan system, the heating is controlled by the thermastat but the water is on constant. What I would like to know is this energy efficient, i.e the water always on. I have now realised there is an on/off switch so can turn off the system if I...

Hi, My alarm went off last night, checked everywhere and all seemed OK. Reset alarm and 10 minutes later the same zone sounded again, had another walk around no problems. Omitted the zone and went to bed, in the morning omitted all zones except the one which kept sounding, after 10 minutes...