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Baxi 80e Combi boiler temperature cycling?

Discussion in 'Plumbing and Central Heating' started by Mike9, 15 Nov 2006.

This topic originated from the How to page called Problems associated with noises from the central heating system.

  1. Mike9

    Mike9

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    Power to the gas valve and thus heat output for both hot water and central heating cycles on and off every few seconds. PCB replaced, status lights working normally with no warnings activated. Is it likely to be a faulty replacement circuit board or any other suggestions?
     
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  3. fitz1

    fitz1

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    check your earths and neutrals are connecting properly
     
  4. ChrisR

    ChrisR

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    Does the fan stay on constantly?
     
  5. Mike9

    Mike9

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    Thanks for the tips, the problem turned out to be due to restricted airflow in the balanced flue, due to a dead bird being stuck in the end.

    Confusingly there was no warning light showing.
     
  6. ChrisRoberts

    ChrisRoberts

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    May be there is a fault on the pcb and the dead bird in the flue warning system has malfunctioned.
     
  7. bster

    bster

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    ha ha :LOL:
     
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