smoke alarm.

[claremaree]

My smoke alarm was very sensitive and would go off all the time. A few weeks ago after it went off it started making a single bleep every 30 seconds and it's still doing it! It's mains connected and even when i turn it off it still bleeps. Also it hasn't went off since that day. I've tried to get the cover off but can't. What's going on?

[buildersmate]

Most of the mains driven units have a 9v battery back-up in case the mains goes off. Maybe that's the signal that the battery needs replacing? Different models / manufacturers vary.

Some alarms have a cover that slides off rathers than unscrews, have you tried that?

[Scarlett]

I would just get another one. If it is playing up it is surely better to get a new one that works? Safer ...

[snapdarlich]

buildersmate is correct - the 9V battery needs to be replaced - I have a mains unit with the same 9v backup - Replace the battery and it will stop!

[snapdarlich]

Nothing wrong with the unit - You just need to get the cover off - But I bet if you look carefully, there will be a wee drawer to pull out with the battery to replace!

[The Cowboy]

When that happened with mine it had to be replaced.

Cowboy

Ex firefighter.

[funnywebsite]

The battery needs replacing