Had a toaster trip my mains switch whilst the heating was running. Reset the switch but the boiler wont fire up any more. I reset the time on the timer and the on/off times for the heating and when on the "Twice" or "Once" setting the lights on the timer don't show as on, if I set it to continuous or Hit the advance button, the red lights come on to show it's active but the boiler and pump still don't do anything Is there likely to be an internal fuse somewhere or a reset switch that needs hitting on the boiler?