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Upstairs downstairs light switches not working together

Discussion in 'Electrics UK' started by cuttingman, 29 Mar 2020.

  1. cuttingman

    cuttingman

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    I have a 1 gang switch upstairs and a 2 gang switch downstairs.

    Upstairs I have a white cable red wire in COM, white cable yellow wire in 1 way and white cable blue wire in 2 way. Grey cable red wire in 1 way and grey cable red wire in 2 way.

    Downstairs I have white cable red wire in COM A, white cable yellow wire in 1 way A and white cable blue wire in 2 way A. Grey cable red wire in COM B and grey cable red wire in 2 way B.

    I want to be able to switch the upstairs lights on/off from the upstairs switch and downstairs switch.

    Thanks
     

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  2. EFLImpudence

    EFLImpudence

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    All looks as it should be.

    What is the problem?
     
  3. terryplumb

    terryplumb

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    What currently happens with switching ?
     
  4. cuttingman

    cuttingman

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    The light upstairs needs to be on, to be able to control it from downstairs. If light is off upstairs we can't turn it on downstairs.
     
  5. EFLImpudence

    EFLImpudence

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    Can only suggest to check the connections.

    Make sure the copper is not broken inside the coloured insulation.
    It will feel floppy at the end if it is.

    Or of course, one of the switches is broken.
     
  6. terryplumb

    terryplumb

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    Are the switches new ?
    Has the problem recently surfaced ?
     
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  8. cuttingman

    cuttingman

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    Switches are not new, this has always been a problem.
     
  9. terryplumb

    terryplumb

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    Always ,since the original wiring was installed ,or always since you moved in to the property ?
     
  10. cuttingman

    cuttingman

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    Since moved in.
     
  11. EFLImpudence

    EFLImpudence

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    Swap the Blue and Yellow in upstairs switch.

    Then if light upstairs needs to be OFF, to be able to control it from downstairs, the upstairs switch is broken or one of the two wires is.
     
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  12. securespark

    securespark

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    Also, are all terminals tight?
     
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