In article ,
Jon wrote:
Should my radiators come on when the hot water comes on - even though
the heating is set to "off" on the programmer, and it's so hot in the
house that turning the stat up to maximum (30) does not cause it to
"click" on?

You've got a fault. Could be a sticking valve or a design/installation
problem causing thermo circulation. If the latter you may need to add a
one way valve.

--
*Strip mining prevents forest fires.

Dave Plowman London SW
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