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how can i fix my boiler vaillant vcw242e?

my boiler works ok for central heating but we can not get hot enough water its just luke warm.can anyone help please.

jason
January 2008
VaillantHeating, Home Heating SystemsCentral Heating Water
we had same problem with ours, but with pressure drop also. lukewarm water was due to knackered secondary heat exchanger(located at left hand side of boiler). pressure drop was due to knackered expansion tank, which can be repressurised.
anth

anthers
February 2008

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