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home Fix label Heating label_important Home Heating Systems category Vaillant

My (9 year old) Vaillant combi boiler has just stopped producing hot water?

My boiler has just stopped producing hot water. The heating still works, but the hot water will not kick in. Any ideas, before I call out a plumber.
Jay Cheshire, May 2008
home Fix label Heating label_important Home Heating Systems category Vaillantdone
sounds like the dhw flow switch is not making and demanding hot water when you open the taps

T, May 2008
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