heating comes on when turned off


Postby ljc » Mon Oct 13, 2008 11:24 am

Our new gas boiler is 14 months old.Now ,sometimes,when the hot water comes on + heating is switched off, the pipes leading to the upstairs rads get hot ( have TRV rad valves ),+ sometimes the rads themselves get hot for a few minutes. No pattern as to when it happens. Does it matter ? Is it a big job/expensive to put right ?
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Postby Steve the gas » Tue Oct 14, 2008 4:04 am

Need more info on system please-- make model etc
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Postby ljc » Tue Oct 14, 2008 4:02 pm

Greenstar Ri RSF Condensing boiler , Worc. Bosch 18 RJ, + new 16 x 42 indirect cylider (not a combi boiler ).Rads + rad valves are not new.Having a room thermo. in the hall downstairs,additionally to rad valves, IS new. What other details requ'd ?
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