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  1. Billy Whizz
    Offline

    Billy Whizz Active EF Member

    Location:
    Luton
    Hi all,

    Recently replaced single bathroom ceiling rose with four downlighters. All works great.

    Added an in-line bathroom fan (with timer) in the standard fashion using the switched live (SL) from the light switch, in accordance with provided wiring diagrams and fitted labels.

    Fan now runs as soon as power is applied from the CU through the isolator, with no on/off control when the light switch is operated. However, at the same time the lights ARE switched correctly.

    So, SL & L connections swapped on the fan, finally controllable by the switch. But now there's no fan run-on regardless of timer adjuster position!

    Replacement fan from supplier (manufactured 8 months apart according to the QC sticker) is doing exactly the same thing as the first!

    Before I fire off at them and get it all refunded can anyone see something I've missed?

    Thanks & best regards,

    BW
     
  2. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Can you send a picture of youre connections
     
  3. Billy Whizz
    Offline

    Billy Whizz Active EF Member

    Location:
    Luton
    Whoops! I knew I'd forgotten to add something... :)

    Lighting wiring removed from junction box to make it easier to view.

    20170723_153254.jpg

    20170723_152527.jpg
     
  4. Billy Whizz
    Offline

    Billy Whizz Active EF Member

    Location:
    Luton
    Used this diagram...

    shower_fan_wiring-HARMONISED.jpg
     
    • Like Like x 1
  5. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Can you send a picture of youre connections
     
  6. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Sorry just seen them
     
  7. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    deleted
     
  8. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Well that wirring looks horrendous.
    No cpc connected single insulation showing, no identification of conductors. The list goes on. (Im guessing u are no electrician)
     
    • Agree Agree x 4
  9. Lee42
    Offline

    Lee42 Lee

    Location:
    England
    Are youre connections in back of fan isolator ok

    Sounds like there is no permanent live to the fan if it is not over running. If there is one when the light is turned off the fan is faulty
     
    • Agree Agree x 1
    Last edited: Jul 23, 2017
  10. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    i'd be inclined to get the fan bench tested. wire it on a plug and flex.using the cpc of the flex as a S/L ( just for testing, of course). and dab the S/L on to imitate the switch. L, N.SL. see if it works then. if not, it's a duff fan.

    oop s. post made before seeing pics. get an electrician in.
     
    • Agree Agree x 3
  11. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Electrician's Arms

    Location:
    Northamptonshire
    What is the section of bell wire doing.
     
  12. ED17
    Offline

    ED17 Electrician's Arms

    Location:
    North West
    What's the white cable that looks like bellwire doing?
     
  13. Billy Whizz
    Offline

    Billy Whizz Active EF Member

    Location:
    Luton
    No Lee42, I am not a professional and I would never profess to be one. This is a DIY forum after all... ;-)

    And I'm working with what the previous owner left me. If you could explain your CPC, single insulation and conductor identification comments I'm sure I can also rectify these issues.

    Yes, the connections in the back of the isolator are good. While troubleshooting I also wired the fan directly to the junction box to confirm the isolator wasn't faulty.

    Having already got the fan operating in a switchable configuration (by swapping the marked L & SL at the fan) I'm now curious as to why I've had to do this.

    Telectrix,

    Bench test is an option but I'm highly suspicious that two different units seem to be faulty in exactly the same way.

    Best regards,

    BW
     
  14. telectrix
    Offline

    telectrix Scouser and Proud of It Trusted Advisor

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    is it the cpc by any chance?
     
  15. Billy Whizz
    Offline

    Billy Whizz Active EF Member

    Location:
    Luton
    Westward10/ED17,

    The old ceiling rose (a strange and ancient metal thing) had it's case earth wire connected to it...
     
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