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Combi Boiler.

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Old Alpha HE CB 25.


 I have checked the pump, all o.k. Fan o.k. New hot water diaphragm- switch working o.k.

Circuit board o.k. Boiler tries to light but shuts off after a few seconds. No hot water. No central heating.


The strange thing is that when a hot tap is opened the central heating water pressure goes down. Is this a heat exchanger problem?


Thanks,


Z.
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  • 0
    It sounds to me you need the services of  a Gas Safe heating engineer.


    David
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  • 0
    It sounds to me you need the services of  a Gas Safe heating engineer.


    David
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