Changing an Extractor Fan.

[sparkwright]

If it's exactly the same, and the transformer isn't knackered, you won't have to change it.

It'll either be the fan itself or transformer that is faulty.
Unless of course your random attempts at guessing the wiring have ensured both items are now damaged.

May pay to (get someone to) change both.

The old fan was working but making a high pitched noise, so as you say if we havn't knackered the transformer it should still work with exactly the same fan. I think we will put the old one back just to see if the transformer is still working ok, if so we will opt for exactly the same fan.

Thankyou

Looking inside the transformer should give you an idea which coloured wires connect to which terminals at the fan.

 

[Taylortwocities]

The wiring diagram is here
http://www.greenwood.co.uk/product_detail_install_wiring.asp?product=AXS100

as you can see, there are three wires from the transformer to the fan. This is unusual as many 12v fans only have two wires. So you may be forced to get the same fan again. I'm not sure if they sell the fan separately to the transformer, a quick Google or look on eBay may tell you that.

A new one is about £110

TTC

 

[Graysy]

The wiring diagram is here
http://www.greenwood.co.uk/product_detail_install_wiring.asp?product=AXS100

as you can see, there are three wires from the transformer to the fan. This is unusual as many 12v fans only have two wires. So you may be forced to get the same fan again. I'm not sure if they sell the fan separately to the transformer, a quick Google or look on eBay may tell you that.

A new one is about £110

TTC

Yes I know they are expensive. I used to work for WF Electrical and managed to buy it then. We did look into the same one first but was told like I said the one we have is as good. I think I may have bought the transformer with the original now.

I will look on ebay. Thank you