En suite extractor fan with run on timer

[Paddington]

So does the light still operate.

No gonna retire the two leds back and get them working then get brain ache again

 

[Specialist]

Hey Paddington: What I'd have done is to take the fan supply out of the equation completely & get the basic lighting back up & running.
Next thing, connect the 3 core / earth back up but joint it through where the isolator should be & check to make sure the Lights still work and the fan runs. If not check your connections etc.
If it does all work, then replace the connectors with the isolator & then test it all again to see if it still works. It's a bit long winded doing it that way but effective.
Sorry if that sounds really basic & it's not intended to insult you, but I've got no way of knowing your fault finding level or what equipment you have.

 

[Paddington]

So does the light still operate.

Yes, slight delay on one but acceptable

 

[Specialist]

How far did you get with it buddy ?. For some reason, some led lights come on slower than others.