Problem with a timer fan on light circuit

[Tilecutter]

how to fit it ,it was made for competent electricians to fit
and not you. buy looking at you thread .

Ive had my 2391 for 8 yrs. not come across this problem before.

 

[Octopus]

Why do you need a 6" fan?

 

[Tilecutter]

was a recent thread on similar problem. turned out that the fan, once powered up, ran for 30 minutes before resetting. and reverting to normal operation. could be the same thing.

I'll contact Xpelair and find out but no mention in the instructions about any run in time.

 

[Tilecutter]

Why do you need a 6" fan?

Its a big room and the existing hole was 6"

 

[buzzlightyear]

I'll contact Xpelair and find out but no mention in the instructions about any run in time.

which model!

 

[Octopus]

Maybe the PL and SL are reversed..............

 

[Tilecutter]

Maybe the PL and SL are reversed..............

Ive disconnected the SL and with the light switch off if I touch it to the SL terminal and then remove it the fan runs for set time as its supposed to. It is something to do with the voltage constantly in the SL thats still sending a signal?

 

[Octopus]

Are you 100% sure the SL isn't also a PL?

 

[Tilecutter]

Are you 100% sure the SL isn't also a PL?

Yes 247 v switch on and 9 volts switch off, Fluke T120

 

[Wilko]

Ive disconnected the SL and with the light switch off if I touch it to the SL terminal and then remove it the fan runs for set time as its supposed to. It is something to do with the voltage constantly in the SL thats still sending a signal?

I'm not following, sorry. This seems to say your manual SL makes the fan work normally, but put SL on a light switch (that's connected to the same circuit) and it's playing up? If so, isn't it the switch? Hasn't got leakage current from a neon perhaps? Or a dimmer ?

 

[Tilecutter]

I'm not following, sorry. This seems to say your manual SL makes the fan work normally, but put SL on a light switch (that's connected to the same circuit) and it's playing up? If so, isn't it the switch? Hasn't got leakage current from a neon perhaps? Or a dimmer ?

If I diconnect the SL once the fan has activated it runs and stops as normal once the time has elapsed. Which leads me to thinking because theres a constant voltage in the SL ( although only low) it dosnt think youve switched off.

 

[Wilko]

If I diconnect the SL once the fan has activated it runs and stops as normal once the time has elapsed. Which leads me to thinking because theres a constant voltage in the SL ( although only low) it dosnt think youve switched off.

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

 

[Lee42]

No led lamps on the circuit?

 

[Tilecutter]

I'm not following, sorry. This seems to say your manual SL makes the fan work normally, but put SL on a light switch (that's connected to the same circuit) and it's playing up? If so, isn't it the switch? Hasn't got leakage current from a neon perhaps? Or a dimmer ?

Theres a couple of dimmers on the downstairs circuit. I have knocked all fuses off to all circuits bar the upstairs which hasnt got any

 

[Tilecutter]

Theres a couple of dimmers on the downstairs circuit. I have knocked all fuses off to all circuits bar the upstairs which hasnt got any

no visible neons neither