I have a Alpha CB24 boiler, that works fine for about 30 minutes when central heating is turned on, then turns itself of for about 15 minutes then comes on again for about 5 minutes. The h/w out of the hot water tap is boiling hot and you can not put your hands in the hot water. you can here a hissing sound from the boiler when you turn on the central heating. I have repressured the system 2 times in a week, and both times there was a lot of air in the radiators in the upstairs bed rooms. When the central heating is turned of the h/w from the taps is fine.
Alpha cb24 turns of after 30 mins when c/h is turned on
- Thread starter delboy1209
- Start date
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How to clean the plate HE, and where is it on the boiler
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Meant to read, 'if doing it only on DHW' DIYnot Local
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