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Hi looking for some advice on this boiler,its nearly 15 years old now & has had parts replaced in the past ie thermistors / divertor / sensors / & pressure vessel recharged etc but has developed a fault now when the ch is on sometimes the pressure rises very high, it normally sits a 2 - 2 1/2...

Hi all i have a problem with my boiler alpha cb28.hot water runs fine most of the time but does occasionally run cold. The central heating after it has been on for about 1 hr it shuts down with a solid red light & yellow light flashing although the fan is still running & stays like this for...