Extractor fan in t+e

[markharris]

Hello guys,
Wired in an extractor fan for a customer last month, and have just had the phone call saying its not working, and never has.
Its a humidity one, so couldn't test it after I connected it up, as the rest of the bathroom was still in bits.The customer wanted it wiring so that he had control over it. and not for it to be linked with the lights etc. So I wired it up in t+e, from a celing rose to a fan isolator, and t+e to the fan.
I'm going round tomorrow to have a look at it, but am wondering does the phase of the t+e get connected into the SL,or L if you just want it controlled by the isolator.
And can anyone confirm that you don't have to have a permanent live and a switch live, if you only want it to operate after switching it on via the isolator.

many thanks

 

[J@mes]

Just for future reference, you could have boiled a kettle under it to check its operation!

 

[Octopus]

I'd check the installation instructions to see what they say.

With humidstat fans you may need to go back and adjust them because the humidstat sensor may take a few days to "acclimitise".

Again, the instructions will help, or a call to the manufacturer.

Have fun.

 

[malcolmsanford]

If you used a run on fan then you will need both i'm afraid. The S/L is normally just a pulse to start it and then the L takes over to run it. Well that is the way they use to work, they may have changed in the last couple of years. Hope it helps

 

[telectrix]

you may find that if you are not using the overrun, link L to S/L in the fan to make it work.

 

[markharris]

so if I connected the phase to the SL, and then linked the SL AND L together, it should work?

 

[markharris]

sorry telectrix, didnt see your reply, many thanks

 

[rich67577]

no just connect in to the live side of it and nothing it to the s/l side but you need to adjust humidstat sensor so it cut in when it picks up steam make sure the humidstat sensor is not facing the wall if ceiling mounted try turning the shower on to get the steam build up and the adjust the humidstat sensor so it cuts in the wait for it to go of and bingo job done

 

[Had8Lives]

rich, If you don't pulse the S/L then I imagine it won't check if the room is humid, otherwise what's the point of having a S/L terminal.

 

[telectrix]

i have had this before. when not using the overrun timer, ther fan will only work off a switch if you connect the L to S/L in the fan. first time i had this, i phoned manufacturers tech. help and that is what they told me and it worked. may not be the same for humidistat, but try it.

 

[rich67577]

belive me fitted 100o of them they all have a S/L terminal jcut made like it but you only need to connect to the live supply NOT THE S/L one so the humidistat has a perment feed ad then the humidistat is your switch

 

[markharris]

cheers for all the feedback guys. I went round to sort it out, and connected the phase to the permanent live, and it works, no cross-linking required.

 

[topquark]

Depends on the manufacturer, but connecting the L and S/L together will always work unless the unit is faulty.

 

[rich67577]

glad its sorted did say only need a perment live connected and not to connect in to the S/L