Hi there
Not sure I am posting in the right place so apologies, you were all so helpful with a question I had last year so hope you can help with this one too!
There is an extractor fan in the bathroom which comes on when the light is switched on. When the light is switched off the fan stops running a few seconds later. However when the fan is off, it is still omitting a low buzzing, almost sounds like it’s still operating/trying to start up/sounds a bit like it’s taking off tbh but the sound is very low (much lower than when it’s on).
What could be causing this? Not sure if it’s signalling a fault/dangerous.
Any thoughts appreciated. Thank you so much
J
Not sure I am posting in the right place so apologies, you were all so helpful with a question I had last year so hope you can help with this one too!

There is an extractor fan in the bathroom which comes on when the light is switched on. When the light is switched off the fan stops running a few seconds later. However when the fan is off, it is still omitting a low buzzing, almost sounds like it’s still operating/trying to start up/sounds a bit like it’s taking off tbh but the sound is very low (much lower than when it’s on).
What could be causing this? Not sure if it’s signalling a fault/dangerous.
Any thoughts appreciated. Thank you so much

J