My Baxi 105e is playing up lately and now won't gve me any hot water the power light is on and the light over the tap icon flashes but the boiler will not fire.
It works perfectly on the central heating side
is it the 105instant? does it run hot for a minute and then stop? sounds like its using up the heat store then relighting to top it up would say it could be your d/h/w diaphraghm