Luxair Extractor Fan CVD ST pulses when lights on

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Viewing 10 posts - 1 through 10 (of 10 total)
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  • October 17, 2016 at 12:24 pm #89612
    grapegirl
    Participant

    Hi there I have a Luxair extractor fan. The fan works just fine until i turn the lights on and then it pulses. It doesn’t matter what speed setting it’s on. Any ideas what is happening?

    October 25, 2016 at 8:37 am #441859
    electrofix
    Moderator

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    do the lights pulse as well ?

    Dave

    October 29, 2016 at 12:26 pm #441860
    grapegirl
    Participant

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    Yes. Both work well on their own but pulse when on together

    October 29, 2016 at 1:08 pm #441861
    electrofix
    Moderator

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    will be the pcb faulty

    dave

    October 31, 2016 at 9:14 am #441862
    grapegirl
    Participant

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    Thanks – is that easily fixed?

    October 31, 2016 at 11:27 pm #441863
    electrofix
    Moderator

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    you would have to ask luxair for a price and availability but should not be difficult

    board may be able to be repaired but i would have to see it

    Dave

    January 9, 2018 at 9:31 pm #441864
    AgentX
    Participant

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    I have the SAME problem. The lights are fine, the extractor is fine.
    Both on at the same time and the lights stay on fine but the extractor pulses at any speed. If I turn off the lights the extractor is fine.

    Looking at the generic circuit dragram on this site for cooker hoods it shows

    1) a 12v transformer for the lights
    2) a controller board that supplies the fan (assume its mains) and the light transformer

    With this type of fault is it always the controller or could it be the step-down lighting transformer?

    It is hard to open up CDA curved glass chimney type hood to expose the light transformer and controller board (is it part of the keypad?)

    The board level repairs are they bad electrolyics I should look for?

    Did the OP get their problem fixed?

    Thought I’d ask before trying to take things apart!

    Unit looks like this with halogen at the rear as seen in this photo

    https://www.amazon.co.uk/Cooker-Curved- … B007OXVJKQ

    Not sure how to open it up or find the part number its not on the Amazon listing.

    January 9, 2018 at 9:47 pm #441865
    electrofix
    Moderator

    Re: Luxair Extractor Fan CVD ST pulses when lights on

    its not the transformer it will be the board

    its the power supply to the board could be bad electrolytics depends on the type of power supply

    Dave

    January 18, 2019 at 1:50 pm #441866
    bobzilla7
    Participant

    Did you get this fixed? I have exactly the same issue.

    If it was the board, where is that located and can you get a replacement?

    Thanks!

    January 18, 2019 at 2:02 pm #441867
    electrofix
    Moderator

    from the state of this thread this looks like a common problem. none of the posters above have got back with a solution. I still think is a board power supply problem, as on their own they are ok, but turn them both on and it fails. imagine a low battery that can power 1 item but gets too low when you turn 2 items on

    part for this will probably have to come direct from luxair themselves unless the board can be fixed

    Dave

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