Extractor fan replacement

[Grahamandcharlie]

Hi all.
My bathroom extractor stopped working. It had an inbuilt light which worked but the fan itself doesn't.
I have bought a direct replacement. 2 connection for the light and 3 for the fan, L,LN & N.
When I took the old fan out I had 2 white wires connected to the light and 2 black wires connected to the fan.
None of these wires were permanently live but when the bathroom light was switched on the 2 white wires that were connected to the light were both live (none of the black wires to the fan were).
I have tried wiring the new fan the same as the old one but it doesn't work. Even tried a few different configurations with the 2 none live black wires in the 3 connections in the fan but still nothing.
The first pick is how the old one was wired and two subsequent pictures are attempts to wire it in. Anyone have any ideas?

 

[sparkwright]

What voltage is the old fan?
What voltage is the new fan?
There should be labels on them.

Are there transformers above the ceiling?

What is the white box with the connector block in the third picture?

Can you send more photos?

 

[RandomGrinch]

What voltage is the old fan?

The "12V", on the side of the old fan may be a clue!

I have bought a direct replacement

I'm afraid your new fan is not a 'direct replacement' - it appears to be a 230V AC fan, when your old fan is 12V.
As @sparkwright suggests, you probably have a transformer above the ceiling.

 

[sparkwright]

The "12V", on the side of the old fan may be a clue!
View attachment 355873



I'm afraid your new fan is not a 'direct replacement' - it appears to be a 230V AC fan, when your old fan is 12V.
As @sparkwright suggests, you probably have a transformer above the ceiling.

Ah yes.

And the new fan very likely to be 230v, with the L, sw L and N arrangement.

 

[Grahamandcharlie]

Cool, thanks guys.
Didn't occur to me that there would be a difference in voltage.
Don't know what's above the ceiling, it's inaccessible as its all boxed off and is only accessible through the hole in the ceiling where the extractor fan was.
I'll have a route around, hopefully this transformer is with reach of the hole.
Ta
Graham

 

[Grahamandcharlie]

Hi, manged to have a rummage around in the ceiling and pulled 2 transformers. 1 for the light the small beigh one wh8ch is wired to a big white one for the fan which looks to be linked to the mains. Pictures attached.
I assume I get rid of both of these and just use the big wire that goes into the transformer for the fan

The "12V", on the side of the old fan may be a clue!
View attachment 355873



I'm afraid your new fan is not a 'direct replacement' - it appears to be a 230V AC fan, when your old fan is 12V.
As @sparkwright suggests, you probably have a transformer above the ceiling.

Hi, manged to have a rummage around in the ceiling and pulled 2 transformers. 1 for the light the small beigh one wh8ch is wired to a big white one for the fan which looks to be linked to the mains. Pictures attached.

I assume I get rid of both of these and just use the big wire that goes into the transformer for the fan

 

[Grahamandcharlie]

Thanks fir you're help guys, found a couple of transformers in the ceiling and once took them out of the circuit it started working.
Cheers
Graham