I have a problem with my above boiler. hot water only works if i turn the heating off. i cant run the heating & hot water at the same time any ideas
thanks
I'm assuming by the age of the boiler, it's a gravity system.
You probably have 'robbing' going on, try turning your CH pump to a lower setting to stop the CH robbing from the HW.
If it's a pumped system, ask again.
Carefree
January 2011
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