extractor fan with Transformer

Hi Guys ,
just a question about an icon 30 12volt bathroom fan .Mine shook itself to bits and stopped working .The impellar snapped off its mountings .I have the same as a replacement under warranty .I have changed them over but the new one doesnt kick in .It has a humidity module which switches fan on when moisture is detected in th air .

I have power to the module but it only reads as 4 volts .
My question is ,does this mean the transformer is goosed as well .I did get a new one with the fan but was not going to fit it if the old one is ok as it is buried in the floor upstairs above the downstairs bathroom so means lifting carpet .floor boards etc .

So should the power be reading 12 volts at the module in th fan where the power cable is connected .(I am thinking it should )but i need it confirming before I start a major job of lifting floors etc .

Many Thanks for your help .
Regards
Rob.

P.s the fan was making a right racket before giving up altogether ,would this have put strain on the transformer ??
Tried to give as much info as possible so apols for the long winded short question !!

njkmr said:

I have power to the module but it only reads as 4 volts .

Click to expand...

What are you using to measure it?

Put a plug onto the new transformer, and measure its output in exactly the same way - see if you still get 4V.

And connect it to the new fan - see if it works.

ban-all-sheds said:

njkmr said:

I have power to the module but it only reads as 4 volts .

Click to expand...

What are you using to measure it?

Put a plug onto the new transformer, and measure its output in exactly the same way - see if you still get 4V.

And connect it to the new fan - see if it works.

Click to expand...

Hi Ban all sheds ,
I am using one of them voltmetre things .
Will try that with the new transformer to see if its the same .
And yes thats a good idea about connecting to the new fan witht the new transformer to test .I presume you mean without lifting up the floor ,which I want to avoid .
Thanks Again .
Will let you know how i get on .

Then use a proper multimeter.

What range is it set on?. Are you expecting to see AC or DC?

EDIT: You already asked this question 10 minutes earlier. //www.diynot.com/forums/viewtopic.php?t=280005
Are you impatient, or something?

Taylortwocities said:

Then use a proper multimeter.

What range is it set on?. Are you expecting to see AC or DC?

EDIT: You already asked this question 10 minutes earlier. //www.diynot.com/forums/viewtopic.php?t=280005
Are you impatient, or something?

Click to expand...

Sorry it is a multimeter .
Not sure about range ? says V with - over ...
Its showing DC .
Yes impatient, but it was a double hit of the enter button that caused the double post and for that I apologise .

Did what ban all sheds said and the new transformer shows 15.4 V directly out of the terminals in the transformer so my next job is to mate the new transformer to the new extractor and see if it kicks in .
Thanks Again .