central heating works fine but the hot water does not come on anymore, it used to but kept switching from hot to cold and somtimes the boiler would just cut out, have replaced the hot water sensor but this still hasn'nt solved my problem i've no hot water at all any ideas
to check fault, switch central heating off on timer or roomstat. with no call for heating turn on hot water tap. if boiler does not respond (i.e. no pump noise or fan activity) most likely source is water flow switch. check your manual for position of switch in the pipework inside the boiler.
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