I recently had to fit a new double light switch, with a light and extractor fan going into it. I noticed that when you operate the switch (mostly when turning it off) there is occasionally a blue flash, like a spark, behind the bottom of the light side. The extractor doesn't seem to do it. Don't know what is causing this, have checked all the connections and everything is fine. Like I say it is a brand new switch, not sure of the quality as someone else bought it.
Any help would be hugely appreciated, thanks.
Any help would be hugely appreciated, thanks.