Hi since my last comments on my faulty boiler i have changed the fan unit which was faulty,now the unit runs but fails to light the burner ie is failing in the ignition sequence ? i have just fitted a new control panel but it did not make any difference.On start up the pump runs and the fan runs but after about one and a half mins it goes into fault leaving the fault light flashing on/off and the blue light normally off and flashing on has anybody got any suggestions?