Why a switched live fan is not switching on?

[RandomGrinch]

This is where I'm confused.
You've said that you understand that the fan needs a live, neutral and switched live...

I understand the basics of live and neutral feeding a timed extractor and then switched live feeding that terminal

And that the builders wired it up correctly...

My builder has who say he's wired it up successfully before

And yet now you show us a single twin and earth cable connected to the fan.

Was there ever a separate switched live connected, for which you would need a 3 core and earth cable?

The xpelair terminal connections are these should anyone be wondering...

 

[Taylortwocities]

Need a better look at that terminal block. Photo is too blurry

 

[Alec_t]

The brown input wire is currently in terminal 2. Try it in terminal 3 instead (which is where a switched live would normally go).

 

[RandomGrinch]

The brown input wire is currently in terminal 2. Try it in terminal 3 instead (which is where a switched live would normally go).

If there was only a switched live and not a permanent, as earlier...

connect the brown to permanent live, add a link wire between that and Timed

There would need to be the link between L and LT.

 

[Alec_t]

If there was only a switched live and not a permanent, as earlier...

There are doubts about the wiring. Is the cable shown really N and permanent L? Or is it N and SL? Or N and N, Or ......?

 

[Taylortwocities]

Need a better look at that terminal block. Photo is too blurry

Third time of asking…