DIY Doctor UK DIY Forums

hello mite replaced a bathroom window fan in january this year quite recently ive noticed like a poping noise coming from somewhere every now and then can not quite figure it out

i ve phoned them many times to rectify it but they dont turn up mmmm strange

also is a certificate need to be issued as i was not given one and i did not see the sparky test any circuit only to switch the lighting one off

any help is gladdly used thanks

To replace an item like for like does not come under Part P. To define like for like is rather gray and many consider to replace a window fan with another window fan is like for like even if different make. There is a like to Part P in the projects section.
As to working out what a popping noise well my wife watches Medium but I have not worked out how to do it yet. Could it be the shutters operating?
Eric