Bathroom Light and Extractor fan wiring help

[Gary Marr]

Wondering if any knowledgeable electricians could help.
We moved in to a property which has a light and extractor fan in the bathroom.
The extractor fan does not work when the light is turned on.
Replaced the fan and still nothing.
Gone in to the loft to look at the wiring removing all the insulation over the top of it.....whoever did this has created a fire risk by not using a junction box.
However, wondering if anybody can see anything wrong with the wiring causing the extractor fan not to power up???(picture attached)
Have tried identifying wires in the picture to the best of my knowledge.

 

[blup]

Difficult to see but if it’s a timed fan have you got 3 and 6 the wrong way round (switched live and neutral)?

 

[Taylortwocities]

Picture of wiring at the fan needed.

Do you have an electrical test device?

 

[Murdochcat]

Is there a "concealed" isolation switch for the fan anywhere?

 

[Gary Marr]

Difficult to see but if it’s a timed fan have you got 3 and 6 the wrong way round (switched live and neutral)?

Do you mean at the fan??
The fan is a knightsbridge EX004TPC with overrun timer

 

[Gary Marr]

Fan

 

[blup]

Do you mean at the fan??
The fan is a knightsbridge EX004TPC with overrun timer

Yes

 

[Taylortwocities]

Looks wired properly. What’s that blue and brown cable?
And …

Do you have an electrical test device?

We need to confirm if the right voltages are at the fan.

 

[Gary Marr]

Looks wired properly. What’s that blue and brown cable?
And …

We need to confirm if the right voltages are at the fan.

Think thats to an LED light.
I have a voltage detector pen to check live voltage in wire

 

[Gary Marr]

Difficult to see but if it’s a timed fan have you got 3 and 6 the wrong way round (switched live and neutral)?

If i swap them around and try it....will it damage the fan?

 

[Taylortwocities]

I have a voltage detector pen to check live voltage in wire

You need to check that there is a voltage on the L wire
You need to check that there is a voltage on the T wire that goes on and off with the switch
You need to check that the neutral (N) is actually connected to neutral. Your magic wand wont help you there, you need a multimeter, at least.

 

[Gary Marr]

You need to check that there is a voltage on the L wire
You need to check that there is a voltage on the T wire that goes on and off with the switch
You need to check that the neutral (N) is actually connected to neutral. Your magic wand wont help you there, you need a multimeter, at least.

100% hear ya.
My multimeter is broke so will need to get a new one

 

[blup]

If i swap them around and try it....will it damage the fan?

It does look to be correctly wired so follow the MM route assuming all connections are tight

 

[Gary Marr]

Thanks everyone. Bought a new multimeter and will test wires to make sure there is power going to the fan.
Will let you know

 

[Gary Marr]

Weird.....so tested the terminals at the extractor fan with a multimeter.
Permanent live and neutral returns 247v
Switched live and neutral returns 0v when switch off.
Switched live and neutral returns 247v when switch is on
Does this mean the fan must be at fault?