New Extractor fan running continuously

[akaydnc]

Hi All,

Previously had bathroom timer extractor fan. It would come ON when the light switch is ON, and continue on timer after the light is switched OFF.

New fan, Vents 100MTHK (humidity and timer controlled) installed, but it runs continuously. After few hours, I switched power off at the mains, and moved the timer and humidity controls to the minimum (anticlockwise). Upon switching on the mains power, the fan starts on its own, and is running continuously- I didn't use the light switch.
(I have done wiring identical to previous timed fan--live, switched live and neutral).

First time post on excellent forum. Any help is greatly appreciated in getting normal fan operation.
Akay

 

[karls2009]

hi have you tried swapping the live and switched live around to see if that solves it.

 

[akaydnc]

yes I have, the result is the fan comes ON with light switch and OFF with light switch.

 

[electronicsuk]

yes I have, the result is the fan comes ON with light switch and OFF with light switch.

Even after setting the timer back up from minimum?

If so, the unit is probably faulty.

 

[ColJack]

or it could just be really humid in your bathroom where you sited the fan..

 

[akaydnc]

Fan is now not running continuously. Have increased sensitivity of humidity and timer controls to almost maximum. Fan now switches on with the light and runs on timer with light off. Will have to wait and see if and when humidity sensor kicks in at bath time.
Fairly certain this solves the problem.
Thanks to all for your time and efforts.
Akay

 

[oharaf]

you will be amazed at the humidity levels at the moment, just installed 2 humidity and timer fans, in the bathroom, not yet commisioned the humidty level was 70%!!!

There is a chance of a faulty fan, the first one i put in last week came on ran for 2 mins then exploded with an all mighty bang!!!

Best thing was the plumber was under the sink and shot up on explosion nearly knocking himself out cold