I have an FIT-10YRF
My smoke alarm beeps:
1 beep every 40 seconds:
False alarm; loud pulsating alarm sound:
Click here for the list of places not suitable for installation of a smoke alarm.
It is very important a smoke alarm is maintained properly from the day of installation. If you do not do this, the smoke chamber will gradually contaminate, and as soon as the contamination reaches a certain level, the smoke alarm will start giving a faulty alarm. This is not covered by the warranty as it is caused by poor maintenance.
If contamination of the smoke chamber is causing the faulty alarm, what you can try is to thoroughly vacuum clean your smoke alarm on all visual openings. To avoid faulty alarm it is recommended to do this at least once a month. You do not have to remove the smoke alarm from the ceiling, it is enough if you vacuum clean the outside of the smoke alarm using the vacuum cleaner.
If this does not help the last possible solution is the use of compressed air.
Unfortunately, if this also does not help, the smoke chamber contamination is so deep that it is beyond repair and the smoke alarm will have to be replaced.
Maintenance of your smoke alarm:
Test your smoke alarms monthly and also after a longer period of absence such as holidays, etc.
• Check that the red light flashes approximately once every minute. If this is not the case, this smoke detector must be replaced.
• Press the test button for ± 3 seconds on a single detector and up to 20 seconds on wirelessly linked detectors to test the smoke chamber, electronic parts and siren. A loud pulsating alarm will now sound (the level is at least 85 dB at 3 meters). A red light will flash rapidly when the siren is sounding during this test. By pressing the test button you simulate the effect of smoke in a fire. This is the best way to test if your smoke alarm is working properly.