Why does my smoke alarm keep beeping
If your smoke alarm is beeping even when there is no smoke or fire around, it is a signal that the detector is malfunctioning or something is keeping it from working properly. If you have a smoke detector that is battery powered, then there is a high chance that the smoke detector is running out of juice. Simply change the batteries to stop it from beeping in the absence of smoke. If however, you do not have a battery powered fire alarm or if the beeping persists even when you change the batteries, it might be the result of some other situation. If you have an AC or AC/DC alarm, then you need to check the wiring to determine whether it is grounded or not. A smoke detector with grounded wiring beeps with a gap of five seconds by default and it means that you need to call in the electrician. Insects often manage to enter inside a smoke detector, but fail to get out. As the insects become trapped inside, the smoke detector malfunctions and starts sending out false alarms. Check the smoke detector from close range and clear out any dead or alive insects that might be present. Cleaning a smoke detector every once in a while is important because dust can also obstruct the optical detector, which may result in beeping. In fact, if the detector is not cleaned properly, it can also become inefficient at sensing smoke before it is too late.
Apart from the above mentioned problems, other accidental reasons for a false alarm include the alarm system being triggered by steam from a steam bath or steam from your kitchen. In such cases, try powering down the detector for the time being or reinstall the detectors away from these places. As is the case with any other equipment, smoke detectors can malfunction due to inner technical problems too and a fire alarm that keeps on beeping is a considerably safer issue to have than a smoke detector that has become dead without any sign.