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how can i fix my biasi combi boiler ?

heating works fine but in hot water mode boiler does not fire up
russ, December 2012
on the diverter valve there is a hot water micro switch check to see if its being pushed on when u turn on the hot water if it doesnt then it either needs a diverter valve service kit or the hot water diarpham washer needs replacing need to takes it apart to check it

kash, December 2012
link Click here to see other fixes for Biasi Riva.