Loud, Continuous Alarming

When the smoke alarm detects combustible products and goes into alarm mode, the pulsating alarm will continue until the air has cleared. For procedures on what to do when your alarm is in active alarm mode, see What to Do When Your Smoke Alarm Sounds.


If a false alarm is activated, one of the following may be the reason:

  • The battery may be loose or installed improperly

  • The sensing chamber may be dirty

  • Humidity, steam, or other environmental factors

  • An electrical condition may be causing power to the unit to be interrupted

  • The alarm may have reached the end of its life

First, make sure it's not a real alarm. Then, learn how to silence a nuisance or false alarm.

 

Consistent Chirping

If a smoke alarm is chirping consistently, one of the following may be the reason:

 
  • The battery may need to be replaced. An alarm will chirp every 30 to 60 seconds for a minimum of seven days

  • The alarm may be malfunctioning. An alarm will chirp between flashes of the red LED light

  • The Hush feature may be activated. An alarm will chirp every 30 to 40 seconds for approximately seven minutes while the Hush feature is activated

  • The smoke alarm may have reached the end of its life (sealed battery models only). An alarm will chirp every 30 seconds to indicate it's time to replace the alarm

  • There may be interference from a similar system nearby (wireless alarms only)

For ways to troubleshoot the problem, see What Causes Consistent Chirping.

 

Intermittent Chirping (Without a Regular Pattern)

If a smoke alarm is chirping intermittently, one of the following may be the reason:

 
  • The battery may be loose or installed improperly

  • The smoke alarm sensing chamber may be dirty

  • Humidity, steam, or other environmental factors

  • An electrical condition may be causing power to the unit to be interrupted

  • The alarm may have reached the end of its life

For ways to troubleshoot the problem, see What Causes Intermittent Beeping or Chirping.

 
 
Replace your smoke alarms today if they are past the end of their lives.