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boiler doesnt always fire up on hot water only.boiler type alpha 240e?

when turnig hot water on the boiler dosent always fire up need to put central heating on to get hot water
simon clarke, September 2007
def sounds like diaphragm to me - part no more than £6-10

alpha engineer

Alboy, September 2007
replace DHW flow micro switch or possible diaphram

kris, September 2007