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Glowworm compact 100e no hot water

Discussion in 'Plumbing and Central Heating' started by Stu777123, 6 Apr 2021.

  1. Stu777123

    Stu777123

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    Hi all,

    I've been unable to get domestic hot water, the boiler just doesn't fire up when I turn on a hot tap.

    Central heating works fine though

    I've ordered a new DHW microswitch as it seemed a cheap option to try

    Be grateful if anyone could share the common faults that might be causing it.

    Fitted a brand new PCB a couple of years back so i doubt it would be this

    Thanks for your time
     
  2. CBW

    CBW

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    Probably more the diaphragm rather than the microswitch. Microswitch easily tested using a multimeter.
     
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  4. Gasguru

    Gasguru

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    The DHW assemblies leak for fun on these so it's normally best to change the diaphragm, brass cover/gland and microswitch in one go.
     
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  5. Stu777123

    Stu777123

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    Turns out it was a diaphragm after all, fitted a new one and all working fine now

    Thanks for your help
     
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  7. Stu777123

    Stu777123

    Joined:
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    Location:
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    Thanks for your reply, changed the diaphragm and all working perfectly now
     
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