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Ravenheat combi boiler. How can I have hot water without heating on?

I have a Ravenheat RSF 84ET combi boiler about 4 or 5 years old. Hot water is only available when the heating is on. So if I want to have a hot shower the heating has to be on. Expensive and uncomfortable in this weather!

I am a competent mechanical engineer.

Tony Stirling
July 2008
RavenheatHeating, Home Heating SystemsHot Water Shower
I have on mine - and diaphram - no joy

jon hinch
January 2009
Have you with changed both CH and DHW wet pocket thermistors?

Chris
August 2008

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