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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.
Parents
  • 0
    I hate those things. Noisy and too many components! I shall stick with my floor-mounted cast iron ones.


    (How do you put things on top of a wall-mounted combi to dry them out?)
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  • 0
    I hate those things. Noisy and too many components! I shall stick with my floor-mounted cast iron ones.


    (How do you put things on top of a wall-mounted combi to dry them out?)
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