Most irregular smoke alarm sounds fall into two categories: either your alarm beeps at regular intervals (chirping), or beeps consistently without stopping (sirening).
Chirping is when the alarm beeps roughly once every 45 seconds – 1 minute. This is usually to indicate low battery power. Most of the time when this happens, the battery just needs to be replaced. If the alarm is a mains alarm, you might need to disconnect the alarm from its base or plug and remove the battery. Then hold the test button for 10 seconds to drain the alarm of residual power before putting a new battery in.
Sirening is when the alarm beeps consistently without stopping. This usually indicates smoke has triggered the sensor in the smoke alarm. For a detachable alarm, if it is sirening, it will most likely need replacing. For mains powered alarm, it will also likely need replacing.
Other commonly found issues with smoke alarms
Flashing Red LED
This is completely normal across all alarms as long as there is no sound.
Flashing Green LED
On mains powered alarm, this is normal and simply means that it is connected to the mains power.
On mains powered alarm, this likely means that the LED light has simply stopped working. It may also mean the alarm is not connected properly to the mains, in which case, it will use the battery until it goes flat. The smoke alarm will need to be replaced or the wiring has to be checked to make sure power is connecting to the smoke alarm.
Important point to note
If the property you're residing in is enrolled in our smoke alarm safety service and your smoke alarm is beeping or chirping, please call 1300 134 563 and one of our customer service team members will be on hand to book an urgent appointment and may be able to offer some additional troubleshooting advice.
Here are 5 common reasons for unexpected smoke alarm beeping