Nuaire bathroom fan - help please!

[moggie 939]

Hi
I have, in my new build apartment, a Nuaire Bathroom Fan which has no markings on it to denote a model. Because I have a wet room and to avoid condensation I am told that it works differently to straight on/off fans.

The fan is always on, but at a very very low speed even when the bathroom light is not switched on. When the light is switched on the fan comes in at normal speed and when the light is switched off it reverts to the tickover speed after a minute or so.

My problem is that when it is on this tickover speed (ie most of the time) I am experiencing a high pitched wining noise which goes on intermitently and is keeping me awake at night. There is no wining noise when the fan is on fully.

Any advice would be appreciated as I have no info on this fan in my pack from the builder.

Thanks a lot

[The Builder]

Plenty of technical info here, moggie ...............

http://www.nuaire.co.uk/product/genieb

I guess it's for background trickle ventilation, to keep the room free of condensation.
It shouldn't make that noise, obviously faulty. It should be replaced by the builder.
In the meantime, all such fans are supplied with a switched live(pull cord), and a permanent live (no switching). Their should be an isolator switch somewhere (often just outside the room) ..... this will turn both lives and neutral off.

[moggie 939]

Thanks so much for this 'The Builder' - that's the one!! Yes there is a switch outside over bathroom door for isolation purposes.

Will get the builders engineer to look at it. From what you have said and the info you gave me on the link, and I am only a very low tech senior citizen when it comes to DIY, it could be out of balance on the trickle setting.

Once I have had it looked at I will advise the outcome.

Again - thanks

[AlBags]

Yep ... Replace it.