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 about 1/4 hr then starts itself up again & the red light goes off untill the next time, which could be 1/2hr or sometimes its ok for hrs, i have drained & refilled the system,the pump is working & clean & all rads get hot. we do live in a hard water area & boiler is about 13yr old but is serviced anually.it has had a diverter valve & flow switch fitted few years ago any advice appriciated.
regards loyd
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 about 1/4 hr then starts itself up again & the red light goes off untill the next time, which could be 1/2hr or sometimes its ok for hrs, i have drained & refilled the system,the pump is working & clean & all rads get hot. we do live in a hard water area & boiler is about 13yr old but is serviced anually.it has had a diverter valve & flow switch fitted few years ago any advice appriciated.
regards loyd
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