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I have a worcester 24cdi combi boiler ?

My combi boiler only gives me hot water if the thermostat is turned on to operate the radiators the boiler does not flare up when i turn the hot taps on but get hot water only when the radiators are on
mark g, December 2009
i have been told the big diaphram has gone

angie, February 2010
the dhw diaphragm in the diverter valve has worn so it needs replacing.

darren, December 2009
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