20 Most Recent Kidde 4618 Firex Hardwire Ionization Smoke Detector with Battery Backup Questions & Answers

smoke detectors work by smelling the air across a radioactive anode which upsets the electronics and sets off the alarm it can be set off not only by smoke but by heat and gasses in the air the new and better product is a photo electric detector which alerts earlier and can be installed connected to each room and into the house power or they come with a 10 years lithium battery It could be a faulty unit so take it back for a warranty exchange unit

Nope. Not unless the technology is being worked on right now.

see other answers...you're probably missing power

copied from the manual, available at the kidde website RED AND GREEN LED INDICATORS This smoke alarm features separate red and green LED indicators. The LEDs indicate the following: GREEN LED CONSTANT ON - AC power is present. OFF - AC power is not present. RED LED - Can be seen through the Push-to-Test button. Blinks once a minute - Indicating presence of a working battery. Blinks once a second - Smoke alarm senses smoke and simultaneously sounds an audible alarm. Blinks once every 10 seconds - Smoke alarm is quieting an unwanted alarm (Model ADC only). (Interconnected system only): OFF - Another smoke alarm in the network has sensed smoke and is signalling this alarm.

see other answer

did you connect it to the electricity? this unit is not battery only; it requires connection to the household electricity. the only thing i could find in the manual makes it look like it's indicating low battery, but if it's not chirping once per minute as well then i would guess that it's looking for power

How old is it? It may be telling you that it's no longer reliable and must be replaced.

There is a little plastic lever that you must push back down while installing the battery.

Check ur main a/c source of power yet?This kind of smoke detector draw alot of power.Battery replacement should used the best kind of batteries out there like Duaracell,Energizer or litium rechargable batteries.After the replacement of the battery,should press the reset button like for at leat minute for the smoke detector to go off for about 30 sec. for it to dectect the new back up battery power source.Should solved this lower power detection problems.

Those battery holders are not easy to find on that model. However, look for a small screw on the outer perimeter of the detector. That's the door that needs to removed to replace the back-up battery. Some models don't have the screw, but can be popped open with gentle pressure using a flat tip screw driver.

Hope that helped to solve your problem.

There may be a short in the system. But
Hopefully, that should solve the problem. Please let me know.