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Fan/Light help please

goldenboy1818
Hi I fitted a new envirovent extractor in a bathroom, they had a 12volt one before but the zone position was ok for mains. Obviously removed the transformer.


However after leaving at night the customer has rang to say the light that operates when switched on with the fan, has a constant dim light. Bulb is a small 3watt led. It must be getting some slight back feed, only when the fan iso is on. Has anyone experienced this before, greatful for any input. Thanks
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    If the fan is isolated its completely fine.

    Is there a decent length of cable between the isolator and fan?


    Is it 3-core + earth?


    If so, are the L and SL in 3-core both to the same side of the c.p.c.? (with perhaps N on the other)


    If all of the above then perhaps swapping the cores around so L and SL are on opposite sides might help... (or might not..) Should be a relatively cheap experiment either way.


       - Andy.
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  • 0
    If the fan is isolated its completely fine.

    Is there a decent length of cable between the isolator and fan?


    Is it 3-core + earth?


    If so, are the L and SL in 3-core both to the same side of the c.p.c.? (with perhaps N on the other)


    If all of the above then perhaps swapping the cores around so L and SL are on opposite sides might help... (or might not..) Should be a relatively cheap experiment either way.


       - Andy.
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