Problem with a timer fan on light circuit

[buzzlightyear]

may be they had problems with the last fan ,that's why they tiled over the hole in the beginning.

 

[Tilecutter]

may be they had problems with the last fan ,that's why they tiled over the hole in the beginning.

And they might not have had access to the countrys top electricians to sort it out

 

[Deleted member 26818]

Am thinking, there's a problem with the heated mirror.
Try disconnecting it, see what happens.

 

[Tilecutter]

What voltage did you have on the Switched live when it was supposed to be off?

I tested with a Fluke T120 Its not supposed to give a LCD readout below 12 volts but if I switched the light switch on it read 247v and when off it went down the scale and rested at 9 v. I usually just get red lights illuminated and a buzzer at 12 volts on the scale on the meter. Which tells me its less than 12

 

[Tilecutter]

which model!

Xpelair Simply Silent Fan DX150TR Timer

 

[Tilecutter]

You could put a small load on the SL and see if it fixes it? Pilot lamp perhaps?

if I pass the SL through my meter to the terminal on the fan this would have the same effect, would it not? Yes worth a try. It would tell me if a neon would work.

 

[Wilko]

Hi - thought was to try a small load from SL to N at the fan. Purpose is to clamp off SL to zero volts when light switch is open. It will only have effect if there is leakage through the switch or induced voltage from other cables. Good hunting !

 

[Octopus]

FWIW I would call the manufacturer of the fan ................

 

[Midwest]

My Fluke 110 gives me or sorts 'low' voltage readings, which I don't believe in . Have you tried measuring this 9 volts with an analogue meter, before you get led up the garden path?

 

[davesparks]

You've ruled out the fan as being the problem as far as I can see, so now you need to track down where the this 9V is coming from.

What have you measured the 9V with reference to, earth or neutral?
if you have a suitable multimeter then try measuring it with that, I suspect it will give a higher voltage reading.

I think the simplest explanation for a voltage on the S/L when it shouldn't be is that the switch is not operating correctly, so I'd be inclined to test that first.

 

[davesparks]

Am thinking, there's a problem with the heated mirror.
Try disconnecting it, see what happens.

How could the mirror be causing this?

 

[Midwest]

If the voltage actually exists, as well as checking the switch, the remainder of the circuit (i.e. in other rooms) needs to be verified that its wired correctly. I had to fix a fault, where live had been connected into neutral and neutral vice versa.

 

[telectrix]

methinks all threads regarding timer fans should themselves be on a timer, and self-destruct after 2 days.

 

[Midwest]

Could be on a humidistat, only come on if things steam up

 

[telectrix]

Could be on a humidistat, only come on if things steam up

now you're complicating the issue. my brain is conditioned for saturday afternoon. beer and kip.