Fix Fault Worcester 28si

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We have 65 questions about fixing 'worcester 28si'

Change time on boiler. Clock?

How can I change the time on my boiler. It’s a Worcester Bosch model 28SI 11


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Worcester 28si boiler top up?

I have a very old worester 28si and the pressure is down to around 0.4 i cannot figure out how to up the pressure. The external filling hose doesnt seem to fit or do anything as it has one valve that ... more


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Worcester bosch 28si ii wont fire up once hot?

Hi peeps not long moved into my first morgaged home to find out that the boiler does not ignite when hot, can have the heating on for 2-3 hours but once it goes off it fails to start had a company out ... more


Worcester bosch 28si ii wont fire up once hot?

Hi peeps not long moved into my first morgaged home to find out that the boiler does not ignite when hot, can have the heating on for 2-3 hours but once it goes off it fails to start had a company out ... more


worcester 28Si II hot water fault?

My Worcester boiler heats the central heating water ok, and seems to heat the hot tap water if the central heating off. But if the central heating is on and hot water is drawn the boiler faults out an ... more


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