Two of the IQ Smoke (QS5110-840) keep beeping with the light flashing yellow every 45 seconds or so. I replaced the battery but does not help. What could be the problem?
Below is the status chart from the manual. The timing of the flashes will tell you the underlying issue. What does the behavior match on the chart?
I think it’s detector dirty. Could you give me the instruction on how to clean it?
Cleaning instructions are found under the Maintenance section of the manual here.
To clean your alarm, remove it from the mounting base. You can clean
the interior of your alarm by using compressed air or vacuum cleaner
hose and blowing or vacuuming through the openings around the
perimeter of the alarm. The outside of the alarm can be wiped with a
damp cloth.
After cleaning, reinstall and test your alarm by using the test button.
If cleaning does not restore the alarm to normal operation the alarm
should be replaced.