Bathroom extractor fan (sorry)

[cid]

I know there are plenty of posts about this but I can't find one that answers this point, so, sorry, but...

My old bathroom extractor packed up, I took it out, bought a new one, fitted it, and it works. The trouble is, whereas the previous fan came on with the main bathroom light switch, this one is on all the time, and I need it hooked up to the light switch again.

I've read about 'isolators' on here but I don't know if that's what I need in this case. There was a tiny circuit board attached to the old fan that I removed (I still have it) - am I right to assume that has something to do with it? I thought the wires coming out of the wall were coming via the light switch, so only when it's on does power get fed to the fan, but it seems as though it's mains power hitting the fan all the time.

My knowledge stretches no further than GSCE Physics nearly 20 years ago I'm afraid so be gentle with me. If there's another post answering this point somewhere a point in the right direction would be great.

Thanks in advance.

 

[holmslaw]

..

 

[Chri5]

It should also be fitted with a 3 pole local isolator.

Only if the manufactures instruction say so, or it's in a non windowed room.

 

[holmslaw]

..

 

[cid]

Ah, hang on - there are three wires, red, blue and yellow. I have the red into the live connector, the blue into the neutral connector and the yellow into one called S/L, which I assume is the switched live you're referring to.

Does that mean it might just be that I've not connected the yellow one properly?

And the room does have a window, yes, so that's not to worry about.

 

[holmslaw]

..

 

[cid]

Swap the red and yellow.

Ahhh splendid, that's done it - thanks very much for your help.

 

[tobester69]

Has anyone bought a fan from fanbuyer.co.uk?

looking at these: inline duct fans

Need a fan for our toilet area with more umph than a small extractor fan.

Any thoughts?

hope ive done that hyperlink right - apologies if not!

Toby
www.iwood.co.uk