Odd lighting wiring

[JohnW2]

Yep you're getting stuck into the confused detail from OP too.

Assuming they are correct, the actual details provided by the OP seem clear and straightforward enough but, as I wrote, I'm surprised/confused by the fact that the 'permanently-on fan' was not mentioned until post #18 - which makes me 'wonder'(per my previous post)

Kind Regards, John.

 

[SUNRAY]

Cheers I switched those two wires in the fan unit and now it's only on when the lights on.

Has doing this cured the problem with the light?

 

[Soong]

Has doing this cured the problem with the light?

Nope! It's still slightly on, very faintly.

Sorry everyone for the confusion In summary:

She noticed the light was slightly on so I had a look and took that photo. She hadn't noticed the fan was always on. I think maybe because it's very quiet.

I then thought the fan might have been wired incorrectly causing the light to always be on and then noticed it wasn't a timer fan even though it had 3 wires running to it. I switched SL and L so now the fan only turns on when the lights are on.

When the switch is off the light is still ever-so-slightly on.

 

[SUNRAY]

Nope! It's still slightly on, very faintly.

Sorry everyone for the confusion In summary:

She noticed the light was slightly on so I had a look and took that photo. She hadn't noticed the fan was always on. I think maybe because it's very quiet.

I then thought the fan might have been wired incorrectly causing the light to always be on and then noticed it wasn't a timer fan even though it had 3 wires running to it. I switched SL and L so now the fan only turns on when the lights are on.

When the switch is off the light is still ever-so-slightly on.

So where did you switch the wires, in the fan or in the ceiling rose?

 

[Taylortwocities]

@Soong i don’t think you have yet told us the make and model of the fan.

You see, some fans have a function called “trickle”. The fan runs all of the time at a very low speed and , when it is triggered, it comes on to full.

If that is the case your change of wiring may have bypassed the trickle function.
So, make and model please. It’s probably on a label under the front cover.
While you are at it, post a photo of the fan connections.

 

[JohnW2]

You see, some fans have a function called “trickle”. The fan runs all of the time at a very low speed and , when it is triggered, it comes on to full.

Interesting. I've never ome acrcoss, or even heard of, such an animal! Can you tell us any examples?

Kind Regards, John

 

[winston1]

If that is the case your change of wiring may have bypassed the trickle function.

Which surely can only be aa good thing with electricity prices rising by 80%.

 

[Taylortwocities]

Interesting. I've never ome acrcoss, or even heard of, such an animal! Can you tell us any examples?

Kind Regards, John

Really?? You should get out more.
Here’s one

Vent Axia Lo-Carbon Centra Adjustable Trickle | Bathroom Fans

Shop Vent Axia Lo-Carbon centra. Dual speed continuous running, trickle speed selection at installation. Switch live to boost & constant volume control.

www.i-sells.co.uk

And the Vent Axia Svara, and many more

 

[Taylortwocities]

Which surely can only be aa good thing with electricity prices rising by 80%.

With a trickle mains consumption at around 1.4watts that isn’t going to add much.

More economical to stop your wife plugging the MIG welder in to the sockets in your loft!

 

[JohnW2]

Really?? You should get out more. .... Here’s one

Thanks, but at that price I'm probably glad that I don't get out more!

I have to say that so many domestic bathroom extractor fans are so relatively ineffective even when running at full speed that i have to wonder what they achieve (beyond a high price and some 'gimmick value') when running at "a very low speed"

Kind Regards, John

 

[TimboTwo]

More economical to stop your wife plugging the MIG welder in to the sockets in your loft!

Hope they aren't on the lighting circuit!

 

[Taylortwocities]

Hope they aren't on the lighting circuit!

Oh, I hadn’t thought of that possibility

 

[TimboTwo]

Oh, I hadn’t thought of that possibility

Rofl.

 

[Soong]

So where did you switch the wires, in the fan or in the ceiling rose?

In the fan, simply because that was easier. Should I have done it in the ceiling rose?

@Soong i don’t think you have yet told us the make and model of the fan.

You see, some fans have a function called “trickle”. The fan runs all of the time at a very low speed and , when it is triggered, it comes on to full.

If that is the case your change of wiring may have bypassed the trickle function.
So, make and model please. It’s probably on a label under the front cover.
While you are at it, post a photo of the fan connections.

Vent-Axia VASF100B. Which from what I can tell is the most basic of basic extractor fans.

 

[Taylortwocities]

In the fan, simply because that was easier. Should I have done it in the ceiling rose?

Vent-Axia VASF100B. Which from what I can tell is the most basic of basic extractor fans.

According to the wiring diagram that fan only has L and N terminals. So switching those two over would have had no effect.

https://www.vent-axia.com/sites/default/files/silent_fan_fw.pdf