Broken extractor replacement

ivandrago · 12 Sep 2022 at 14:03

This bathroom extractor fan is dead and im wanting to replace it for a regular one.

What's the easiest way to do this? Can I use the existing wiring?

Fan:

Transformer:

K.C. Leblanc · 12 Sep 2022 at 14:40

If you want it to be able to run on after you've turned out the lights you will need a 3 core cable.

Also the cable doesn't have an earth wire so a mains fan would need to be 'class 2'.

ivandrago · 12 Sep 2022 at 20:22

Doesn't need to run after the light is out.

Could I use the existing cable and a fan with a pull cord?

BUDFORCE · 12 Sep 2022 at 20:27

ivandrago said:
Doesn't need to run after the light is out.

Could I use the existing cable and a fan with a pull cord?

Oh it's on a 12v transformer.

In which case yes just but a new fan that takes 12v. The blue is your neutral brown live.

I had a quick eBay and couldn't find that exact model but if you search 12v wall extractor or whatever you could probably get a very similar one

Check the dimensions

Primeline Manrose PEFLVF Low Voltage Axial Extractor Fan 12 Volt AC SELV XF100LV | eBay

This product is manufactured by Manrose and is also sold as the Manrose catalogue number XF100LV. 20 watts power consumption.

www.ebay.co.uk

But I reckon something like that would almost be a like for like swap

Mercenary Keyboard Warrior · 12 Sep 2022 at 20:41

As its got a transformer you want to check its deffo the fan thats dead and not the transformer.
You want something 12v to add to the chockblock in the fan housing, something like a pc fan.

In my experience the transformers are just as likely to die than the fan itself.

BUDFORCE · 12 Sep 2022 at 20:54

Mercenary Keyboard Warrior said:
As its got a transformer you want to check its deffo the fan thats dead and not the transformer.
You want something 12v to add to the chockblock in the fan housing, something like a pc fan.

In my experience the transformers are just as likely to die than the fan itself.

Yea good point more than likely the transformer.

If the op had a meter would be very easy to tell.

Mercenary Keyboard Warrior · 12 Sep 2022 at 21:16

I've got a few old 12v transformers and 12v spots I keep for this purpose.

Most of my house is now 240 though, I hate 12v, don't really see the point. Just adds another failure point.

ivandrago · 12 Sep 2022 at 21:56

Mercenary Keyboard Warrior said:
As its got a transformer you want to check its deffo the fan thats dead and not the transformer.
You want something 12v to add to the chockblock in the fan housing, something like a pc fan.

In my experience the transformers are just as likely to die than the fan itself.

It looks like there is a fused spur for both the transformer and the fan.

Can I not just strip away the transformer and use the cable that goes from there to the fused spur next to the fan (take out the fuse as do not need 2 fused spurs) and wire in a new fan?

Mercenary Keyboard Warrior · 12 Sep 2022 at 22:15

If I get what you mean then yes. The 240v to the transformer is fine to use directly to a 240v fan. I wouldn't reuse the wiring from that transformer to the fan though, likely not 240v cable.
Where is the switch though, is the transformer unit acting as some kind of controller?
Some detect light switch coming on and/or sense humidity to control the fan.
That fan doesn't appear to be anything bar a switchless dumb fan

mid_gen · 13 Sep 2022 at 08:28

I replaced ours earlier in the year as it was way too loud the existing one. I went through several from the rainforest all claiming to be 'silent', sending them back until I got one that was actually quiet but with decent airflow....to save you some pain...

Ended up with this : Envirovent SIL100S. It's not silent (obviously) as it's shifting a fair bit of air, but is effective and quiet.