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Mend Raven Heat L80 Boiler Heating Properly

my boiler is raven heat little star l80?

my central heating work properly but no hot water i,ve changed the sensor but still hotwater not comin on could you assist me with your help da be v/great

mr khan
February 2009
CH off than open hot tap does boiler fire if not than dia. has been punchure or plate heatexchanger full of sludge. follow manual.

Mr K
February 2009

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