What does red light on first alert smoke detector mean

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What does red and green light on smoke detector mean?
How do I turn off the red light on my smoke detector?
Why is the fire alarm glowing red?

What does flashing red light mean on first alert

asked on March 3, 2014

Showing 1-10 of 14 answers

On my Model 0827B, 10 year sealed lithium battery, the flashing red means it is receiving power. It will flash faster when activated.

4gems

· December 22, 2018

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9120B Smoke & Carbon Monoxide Alarm is hard wired with 4 other same model purchased and installed at the same time. all 5 units have 9v backup Duracell batteries installed and all 5 batteries test 9.2 - 9.23 V indicating batteries are good. Solid Green Test Silence light is working and the unit tests properly. On 2 uni… see more 9120B Smoke & Carbon Monoxide Alarm is hard wired with 4 other same model purchased and installed at the same time. all 5 units have 9v backup Duracell batteries installed and all 5 batteries test 9.2 - 9.23 V indicating batteries are good. Solid Green Test Silence light is working and the unit tests properly. On 2 units the small LED is flashing once every 60 seconds with no audible alarm or chirp. Dilemma, alarms were activated audible in the middle of the night with no obvious issue of Smoke or Carbon Monoxide. Using a separate Carton Monoxide sniffing unit, no Carbon Monoxide was detected. Units are 2years old and have a 10 year life span? I'm at a total loss. and have no idea what the issue could be. If anyone has had the same issue and resolved it, I would like to know how and what the problem is. Users Manual does not address this specific issue. Thanks, Amazon Customer. see less 9120B Smoke & Carbon Monoxide Alarm is hard wired with 4 other same model purchased and installed at the same time. all 5 units have 9v backup Duracell batteries installed and all 5 batteries test 9.2 - 9.23 V indicating batteries are good. Solid Green Test Silence light is working and the unit tests properly. On 2 units the small LED is flashing once every 60 seconds with no audible alarm or chirp. Dilemma, alarms were activated audible in the middle of the night with no obvious issue of Smoke or Carbon Monoxide. Using a separate Carton Monoxide sniffing unit, no Carbon Monoxide was detected. Units are 2years old and have a 10 year life span? I'm at a total loss. and have no idea what the issue could be. If anyone has had the same issue and resolved it, I would like to know how and what the problem is. Users Manual does not address this specific issue. Thanks, Amazon Customer.

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I have the same issue. One of the SC9120B units in my house continued to flash red. I replaced the battery multiple times to ensure the battery is good and it still happened. When I hit and held the test button, it reset to green.

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What does flashing red light mean on first alert

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Neither of the two answers (below) are correct. The correct answer will depend on which model you own and what conditions exist while red LED is blinking and ow fast it is blinking. The 9120 is designed to be "hard wired" into your home's electricity. The 9120B is also designed to be hard wired to your home's electr… see more Neither of the two answers (below) are correct. The correct answer will depend on which model you own and what conditions exist while red LED is blinking and ow fast it is blinking. The 9120 is designed to be "hard wired" into your home's electricity. The 9120B is also designed to be hard wired to your home's electrical system but has a battery backup. Normal operation when under AC power = green LED on; flashing red LED once/minute. Normal operation when used with battery only, green LED off & red LED flashes once per minute. During testing, red LED flashes once per second and horn signals with 3 beeps, silence, then another three beeps. Low or missing battery (9120B only), red LED flashes once per minute and alarm "chirps" once per minute. During an alarm condition, if units are interconnected, the red LED flashes rapidly on the unit that triggered the alarm while the red LED on the other interconnected units will be off but all units are alternating 3 beeps with a pause. If a unit goes off and is silenced by the homeowner, the red LED will flash once every 10 seconds. There is a nice little easy to understand chart on page 4 of the User's Manual that accompanies each unit sold which I used as the source for the above information and you should consult for complete information. If you do not have this manual, I am sure that you can Google, First Alert and find their website and download a PDF version. see less Neither of the two answers (below) are correct. The correct answer will depend on which model you own and what conditions exist while red LED is blinking and ow fast it is blinking. The 9120 is designed to be "hard wired" into your home's electricity. The 9120B is also designed to be hard wired to your home's electrical system but has a battery backup. Normal operation when under AC power = green LED on; flashing red LED once/minute. Normal operation when used with battery only, green LED off & red LED flashes once per minute. During testing, red LED flashes once per second and horn signals with 3 beeps, silence, then another three beeps. Low or missing battery (9120B only), red LED flashes once per minute and alarm "chirps" once per minute. During an alarm condition, if units are interconnected, the red LED flashes rapidly on the unit that triggered the alarm while the red LED on the other interconnected units will be off but all units are alternating 3 beeps with a pause. If a unit goes off and is silenced by the homeowner, the red LED will flash once every 10 seconds. There is a nice little easy to understand chart on page 4 of the User's Manual that accompanies each unit sold which I used as the source for the above information and you should consult for complete information. If you do not have this manual, I am sure that you can Google, First Alert and find their website and download a PDF version.

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Our alarm is going off randomly there is 3 hard wired in smoke and Co detecters however one is flashing red but I have replaced the battery's what do I do

What does a flashing blue light mean

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It means it is unlatched. Press the reset/test and hold and it will go back to green.

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It is battery powered is blinking red

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The First Alert alarm I purchased is not battery operated, but wired with existing electric house wiring. If your is the same it is either wired wrong or perhaps faulty.

What does red and green light on smoke detector mean?

The green LED (when illuminated) indicates the presence of AC power. 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.

How do I turn off the red light on my smoke detector?

If you want to manually reset the smoke detector so that the red blinking light will stop, you can press the test/silence button for a few seconds. If your device includes a keypad press “*72” or if your smoke detector is hardwired, look for a reset button to push and hold for 20 seconds.

Why is the fire alarm glowing red?

Flashing Red is Good on Many Models However, on most smoke detectors, it is a good sign. Red flashing on some smoke alarms signals that all is well and it is working. Take a look around your home at the smoke detectors.