I have a main 24 he combi boiler which has a leak. the water appears to be travelling passed the fan then floods the burner & eventually blows the pcb ( i have already replaced 2 pcb's ), anyone got any clues why this maybe happening, it's really annoying, cheers.
Is it sorted yet? You need to get the flue seals checked. If condense is leaking from inner flue into outer flue (air intake) and into boiler it may be a bad or damaged seal, wouldnt be the first time.