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Worcester 350 combi boiler. CH cutting out, HW OK. Fan? Pump? Something else?

Discussion in 'Plumbing and Central Heating' started by nv_london, 20 Jan 2016.

  1. St0rmer66

    St0rmer66

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    It runs at low speed during ignition and the first stage of central heating demand where it's running at low burner pressure. Never sat and watched one for long enough but I expect it also goes to low speed when it modulates down too.
     
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  3. ollski

    ollski

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    it does, it modulates the fan speed on a central heating demand below 5mb iirc
     
  4. DP

    DP

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    High speed purge for 2 seconds, slow speed, then ignition sequence I think
     
  5. boabcelt

    boabcelt

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    The fan also overruns at low speed after a demand period. Thats from memory though, and I'll bow to the knowledge of any top 100 gas installers out there...
     
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  7. shambolic

    shambolic

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    :):):)
     
  8. Steelmasons

    Steelmasons

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    It appears Agile has gone AWOL?.....top 10 gasman is Tony......well he is in the open forum when conversing with the uneducated ..;)
     
  9. nv_london

    nv_london

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    Update: (assuming anybody cares or can remember the original issue/s)...it was capacitor C19 on the driver board! Thanks a lot everybody, especially ollski and St0rmer66.
     
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  10. Agile

    Agile

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    And did you ever have the boiler checked for safety after your DIY repair?

    As you said you would.

    Tony
     
  11. DIYnot Local

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