False fire alarms from downstairs detector
So what causes a false fire alarm to be triggered? I updated my old SimpliSafe smoke alarms a few years ago when the combined smoke and carbon monoxide alarms came out.
Since then we've had two false fire alarms triggered on the downstairs unit. Once, we were out at dinner, and when I looked at the cameras, I didn't see any smoke or any issues, so we canceled that alarm. After talking to the tech, they suggested cleaning it with the vacuum cleaner, which we did.
Last night at midnight, there was another false fire alarm, and as soon as I got up there was no smoke, nothing, so we cancelled that as well.
Perhaps I haven't cleaned it right. Or is it a faulty unit?