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How can i fix it ?

hi to all, my combi boiler (alpha 240) starts heating up all the radiators in the house every time hot water or washing machine are used, althougt the selector switch is set on (hot-water) only and not on both (heating-hot water). any suggestion on what could be done? many thanks.
Marco, May 2008
divertor valve not doing its job when you demand hot water. normally when you demand h/w the valve moves over from central heating position to divert the heated water through the plate h/w exchanger giving you hot water, but its either stuck or damaged and directing water through the heating system instead

iain, May 2008
link Click here to see other fixes for 240.