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Mend Ariston Genus 27 Combi Boiler Domestic Water Heating

Ariston Genus 27 Combi won't heat domestic water?

Hi there, can anyone help?
My Ariston Genus 27 combi boiler won't heat the domestic water when the tap is turned on, but still heats the radiator system ok.
Thanks in anticipation
Steve.

Stephen Banks
May 2009
AristonAriston Genus 27Heating, Home Heating SystemsCombi Boiler Domestic Water Heating

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Ariston Genus 27 Combi: No Hot Water - Help!