B
Bamber gaspipe
Boiler was working o.k, all of a sudden s*d all. Slow flash on blue light indicator, reset flashing. Tried reset, fan kicks in..then nothing..back to reset flashing. Have checked pump, flue for blockages, gas present at valve, water pressure. Have checked air pressure switch by blowing into tube & listening for the click (it does) but is this correct?..control board?..any ideas anyone..