Stopping a smoke alarm from beeping is often simple. Get a step ladder and carefully reach for the alarm. Pressing the “Test/Silence” button on the front of the unit should stop it from beeping or chirping. If this doesn't work, grasp the device and turn it counterclockwise.
Reset the Smoke Detector: Sometimes, a smoke detector just needs a good reset to stop the chirping. You can do this by turning off the power at the circuit breaker, removing the detector from the mounting bracket and disconnecting the power supply. Then, press and hold the test button for about 15 seconds.
If your fire alarm won't stop beeping and you can't find the source then call in an expert fire protection technician.
Press the hush/silencing button. It will silence the entire interconnected system. The button may also say “test.” It should silence all the alarms immediately unless there's still smoke and debris. It will reset in eight minutes, given that the smoke and debris have dissipated.
Disconnect all power sources (take out the battery, if it is a plug in alarm remove it from the outlet, and if it is hardwired alarm disconnect it from any wiring). Hold the test/silence button for 20 seconds. Reconnect all power sources (put the new battery in, plug back into the outlet...
These devices, typically mounted on ceilings or walls, are prone to gathering dust over time. This dust can infiltrate the sensing chamber in your detector, causing it to make a beeping sound as a malfunction alert. Excessive dust buildup can trigger false alarms, causing the system to go off randomly.
For most devices, find and hold the button on the front of the alarm, until the alarm stops, to reset the device. Or, find the button labeled "Silent" or "Hush" to disable an inactive alarm. Totally disable an alarm by disconnecting its wires.
Hardwired smoke detectors can still beep even if there is no battery. Possibly the backup battery might have been activated and that can signal a problem. The backup battery may have run out and that is causing your hardwired smoke detector to chirp.
Press the silence or reset button: Most alarms come equipped with a “silence” or “reset” button. Locate this button — often on the front or side of the device — and press it firmly. This action usually stops the beeping temporarily while you address the cause, such as replacing a battery or cleaning the unit.
Hush Mode: A Temporary Measure
While the chirps may be annoying, they're far less bothersome than having to wave a towel in front of the smoke alarm to get it to turn off every few minutes or just suffering with the loud blaring sound. In most cases, you can find the 'hush' button on the smoke detector's cover.
Turn the power supply off at the source and completely power down the system. Then, wait up to a minute to turn it back on. A common cause of beeping is low batteries. If any component of your system operates on batteries, replace them and then reset the alarm to allow the system to register the new batteries.
How Long Does A Smoke Alarm Chirp Before It Stops Working? If you have a battery-powered smoke alarm, it will chirp for about a month before the battery dies. But if it's a hard-wired alarm with both AC power and a backup battery, it will keep chirping until you replace the backup battery.
Smoke detectors have a built-in residual charge, even with the battery removed. Press down and hold the test or reset button for a minute or so, this should drain it and shut it up.
Even after the battery has died, the detector maintains a residual charge that will keep the chirp going for at least seven days. To get the device to stop chirping once the battery has been removed, you must drain this residual charge by holding the test button for 15 seconds.
If there is no fire, locate each smoke detector. The activation of one smoke detector may cause other smoke detectors in your house to go off. The smoke detector has one button, which is the reset button. Push and hold the reset button for 3 seconds to turn off the smoke detector.
Disconnect the wire harness by squeezing the locking arms on the quick connector while pulling the connector away from the bottom of the alarm. Battery-operated alarms will not have a wire harness.
Hardwired smoke detectors run on electricity, but they also have a backup battery for power outages. When you hear a hard-wired smoke detector beeping, it means you need to replace its battery.
Remove the battery: If your smoke detector has a backup battery, remove it and press the test button for 15 seconds to drain any residual charge. Reinstall the battery: Insert a fresh battery and reconnect the power cable.
The "HUSH" feature has the capability to temporarily desensitize the smoke alarm circuit for approximately 7 minutes. This feature is to be used only when a known alarm condition, such as smoke from cooking, activates the alarm. The smoke alarm is desensitized by pushing the "HUSH" button on the smoke alarm cover.
A hard-wired smoke detector usually chirps for one of three reasons: A dead battery. Dust inside your smoke detector. An old or malfunctioning detector.