Alarm Memory: This smoke alarm is equipped with an alarm memory, which provides a visual indication when an alarm has been activated. The red LED will illuminate for about 1.5 seconds every 20 seconds to indicate the memory condition.
Therefore, the red LED will blink during a smoke alarm, a low battery mode chirp, a unit error mode chirp or at end of unit life.
Your alarm manufacturer may have included a blinking red light to let you know it's time to test the alarm again. The Batteries are Low: Usually accompanied by a loud beep, a blinking red light could mean the batteries in the unit are low. Consider adding fresh batteries and running a test to make sure it's working.
Resetting a hardwired unit with a removable battery backup
Remove the smoke alarm from the mounting bracket and disconnect the power. Remove the battery (for a sealed-battery model, see Battery Settings for a 10-Year Alarm to learn more). Press and hold the test button for five seconds.
A flashing green light means that the smoke detector is getting the right amount of power supply. Basically, the green light indicates that the smoke detector is active. Red Light: The red light can indicate more than just an emergency threat. Your smoke detector blinking red could mean more than one thing.
What does it mean? This is the power indicator light: First Alert and BRK alarms have a power indicator light to show you that your alarm is receiving power. Some alarms have a red or green light that blinks every few minutes, while other models blink rapidly or shine a solid light.
How to Tell If Your Smoke Alarm is Working. Hardwired units will have a steady green LED light to show that it's receiving AC power. Battery-operated units will have a quick flash every 30-45 seconds. This does not necessarily mean the alarm is working.
If the unit is hardwired or just battery-operated, press the Test button. You don't need to hold it down. Press and release, and it should go back to normal "stand by" mode.
A blinking red light on a smoke detector is rarely cause for alarm. Instead, it usually means that the battery is low, or the detector is in need of a minor repair. If you notice a blinking red light, replace the battery first – but only if you're sure that it's still good.
If your alarms use regular batteries, swap in fresh batteries at least once a year. A “chirping” sound means that it's time to change batteries. Because alarm sensors wear out, replace each alarm at least every 10 years. Also, alarms have labels showing when they were made.
The red LED has four modes of operation: Standby Condition: The red LED will flash every 30-40 seconds to indicate that the smoke alarm is operating properly. Alarm Condition: When the alarm senses products of combustion and goes into alarm, the red LED will flash one flash per second.
If your detector or alarm has a blinking or steady light with no audible alarm sound, this typically indicates that the unit is receiving power.
If your smoke detector is blinking red, it means that the batteries are low. While this can happen with all smoke detectors, it's more often the case with First Alert smoke detectors, since they are known for their exceptionally long battery life.
This battery characteristic can cause a smoke alarm to enter the low battery chirp mode when air temperatures drop. Most homes are the coolest between 2 a.m. and 6 a.m. That's why the alarm may sound a low-battery chirp in the middle of the night, and then stop when the home warms up a few degrees.
If this happens, you must replace the batteries in your smoke detector. We recommend retesting the detector once the batteries have been changed.
Most smoke detectors are designed to go off when their electrical current goes down. That's because smoke in the air will reduce the current. If your battery is dying, the current that's flowing through your sensor also goes down. And so you can get a false positive.
The battery may need to be replaced. An alarm will chirp every 30 to 60 seconds for a minimum of seven days. With a "low battery" announcement, disconnect the unit and replace the batteries. You can also put a unit into low battery hush for up to 12 hours on newer units by pressing the test/hush button.
In conclusion, the smoke detector may still be beeping even after the battery is changed because the battery may be low, the smoke detector may be faulty, or there may be dust or other particles in the smoke detector.
If your hardwired machines continue to beep in the absence of a battery, it's most likely because the backup battery has become active. Keep in mind that a backup battery unit is only available with a hardwired device, so if your smoke alarm is battery-only, the chirping is coming from somewhere else.
The green light on my smoke alarm has gone out, what does this mean? The AC power has been interrupted. Check the circuit breaker and AC wiring to correct the problem.
Here's a simple guide: Smoke alarms alert you with three beeps in a row. Carbon monoxide alarms alert you with four beeps. A single chirp means the battery is low or the detector should be replaced.
The green LED will blink once every 16 seconds to alert a user when the unit has alarmed for smoke or has detected a hazardous concentration of CO.