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Ultimate 50FF problem

Discussion in 'Plumbing and Central Heating' started by SandyLyon, 11 Mar 2021.

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  1. SandyLyon

    SandyLyon

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    • Threads advising on DIY gas work are not permitted on this forum.
    My daughter has a Glowworm Ultimate 50FF boiler, open vented system, Y plan with open vented cylinder that has worked fine up until this week.

    The boiler fires up and radiators begin to warm, but the boiler keeps making a clicking noise and the burner cuts out the fires up again then cuts out and so on.

    So far we have changed the air pressure switch and the PCB (had a spare one) but the problem remains, there are 4 LED lights on the PCB, the first (or left hand one) is lit while the burner is lit and goes out when it cuts out.

    Would be very grateful for any pointers.

    Cheers

    E1178C58-8283-43BE-98C6-4241F0724764.png 48604B1C-6CEA-4538-9E0E-302D470E0EF2.jpeg

    Threads advising on DIY gas work are not permitted on this forum.
     
    Last edited by a moderator: 11 Mar 2021
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