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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
link Click here to see other fixes for Worcester.