CH & HW lights flashing on Worcester 400 Highflow combi?

the boiler has a store of hot water in it. it is the equivalent of your airing cupboard it will be warm. if you have hw/ch then ignore the lights if they twinkle like stars.

gilo
September 2009

when your light are flashing it is telling you that you boiler is in overheat and tripped out. when you reset the dial by turning it of then on you are ressetting the boiler, if this keeps happening ,you will probably need a new plate in the bolier ie( water to water heat exchanger) this is probably blocked. best thing to do is get worcester out as they will be the cheapest

rod
September 2009

HI i have looked at the book and there is nothing in there what you say is happening, to me it sound like the themo sat on hot water or heating but not sure unless tested, good luck , please let me know once you fine out cheers, David

capitalboilers.co.uk
September 2009

Additional info when the lights are flashing the boiler isn't generating HW or running the CH.

JH
September 2009