alpha boiler cb24x

3 May 2009
Reaction score
United Kingdom
:?: Hi have a prob with my alpha combi boiler green neon light on all fine but prob occurs when we either turn on hot water tap or turn heating on it sounds like its going to fire up i hear 2 clicks then red light starts to flash i try to reset the boiler but i just get the same result so i have no heating or hot water any advise PLEASE!! :cry:
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any other lights flash?? what is your system pressure?? should be betwenn 1 and 1.5 bar
Can you hear the fan spinning?

What are the 2 clicks? Could they sound like a spark, or are they more 'heavy duty' clicks like a valve trying to open?

If it is the bottom light flashing, I would suspect the primary ntc (the only one on this model) depending on the answers to the above questions.

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