Upstairs radiators on when hot water is on but heating off?


Postby hops1963 » Sat Jul 17, 2010 8:32 pm

Hello, can someone help me as some of my upstairs radiators are on when hot water is on but heating off, any ideas?
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Postby htg engineer » Sun Jul 18, 2010 4:58 pm

Gravity hot water system ?

Quite common as heat rises, you can trap the central heating flow to stop this. As heat rises, if you drop the flow down before going up, the heat cannot rise naturally.


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Postby eggers » Fri Jul 23, 2010 5:05 pm

if it is fully pumped system it would most like be the heating zone valve passing or the 3-port valve passing.
It could also be reverse circulation, but it is unlikely, as if it were it would have been present since the day it was installed
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Postby hops1963 » Wed Jul 28, 2010 10:12 pm

Many thanks people for the answers but is there an easy cure?
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Postby htg engineer » Fri Jul 30, 2010 4:12 pm

Well what type of system do you have ?

Fully pumped or gravity hot water ? can you have central heating on by itself ? or only with hot water ?


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Postby eggers » Fri Jul 30, 2010 6:58 pm

easy cure? yeah, turn all the radiators off! :P
Your local engineer should have no trouble correcting the fault, unfortunately i can't give any other advice without any details of your system.
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