Hello Concerned. first, what we would recommend is to take the alarm down. Take a hose attachment of a vacuum cleaner or a hair dryer on cold and run it around the back edges of the alarms to blow out any dust or pollen. Press the test button until you hear 3 beeps and then let
go. Let the alarm sit running on battery on table for a couple of hours. If the alarm does not chirp or
alarm, you should be able to put it back up. Second, there are 3 usual suspects for this kind of problem: Dust and pollen, spiders and insects, and heat and humidity. Dust and pollen: What we would recommend for dust and pollen is to vacuum out your alarms. By that, I mean to take the hose attachment of a vacuum cleaner or a hair dryer on cold and run it around the back edges of the alarm. Dust can get into the INSIDE of the alarm and get on the sensor. Vacuuming it out should clear this problem out and you will want to do this to all of your alarms about once a year. Heat and humidity: This alarm is made to be resistant to steam and heat and humidity. However, enough steam and humidity can still set off the alarm. Humidity over %85 and heat near the ceiling
around 95-100 degrees can set off the alarms.
Spiders and insects- there is not much you can do about this problem except for keeping the alarm out of areas prone to spiders and insects, such as attics, garages, and crawl spaces. Otherwise, the same openings that allow smoke to come in will allow spiders and insects to get into the alarm, and if they get into the alarm, they will set it off. Also: 2. LOCATIONS TO AVOID • In the garage. Products of combustion are present when you start your automobile. • Less than 4” (10cm) from the peak of an “A” frame type ceiling. • In an area where the temperature may fall below 40ºF or rise above 100ºF, such as garages and unfinished attics. • In dusty areas. Dust particles may cause nuisance alarm or failure to alarm. • In very humid areas. Moisture or steam can cause nuisance alarms. • In insect-infested areas. • Smoke alarms should not be installed within 3 ft (.9m) of the following: the door to a kitchen, the door to a bathroom containing a tub or shower, forced air supply ducts used for heating or cooling, ceiling or whole house ventilating fans, or other high air flow areas. • Kitchens. Normal cooking may cause nuisance alarms. If a kitchen alarm is desired, it should have an alarm silence feature or be a photoelectric type. • Near fluorescent lights. Electronic “noise” may cause nuisance alarms. • Smoke alarms are not to be used with detector guards unless the combination (alarm and guard) has been evaluated and found suitable for that purpose. This is Kidde Product Support at 1-800-880-6788.