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. It should detach from the base so you can open the battery compartment in the back. Remove and replace the battery to see if it caused the issue.
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.
Disarm the alarm system
The process for doing this differs for each system, but one of the following is usually recommended: Enter the passcode and disarm. Arm the system, and then disarm it, immediately. Press the status button on the keypad.
If your fire alarm won't stop beeping and you can't find the source then call in an expert fire protection technician.
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.
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...
Remove the batteries and hold down the reset button for 15 to 20 seconds. Reconnect the batteries and alarm. It will most likely beep once as evidence it is working, then it should stop.
If you replaced the battery and it's still beeping, the smoke detector might have expired like milk. Smoke detectors have an expiration date. The sensitive equipment inside can only work reliably for so long, so if yours is beeping and its expiration date has passed (or will in a year or two), it's time to replace it.
For many of our most popular systems, beeping alarms and low battery trouble beeps can be silenced by pressing the [OFF] or [#] buttons from the keypad.
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.
In most cases, you can find the 'hush' button on the smoke detector's cover.
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.
Dust and debris can easily accumulate inside your hard-wired smoke alarm, causing that incessant chirping sound. This build-up can interfere with the sensing chamber, triggering false alarms. To prevent this, make a habit of cleaning your smoke detectors regularly.
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.
The Silence Feature can temporarily quiet an unwanted alarm for up to 15 minutes. To use this feature, press the “Push to Test/Silence” button on the cover. If the unit will not silence and no heavy smoke is present, or if it stays in silence mode continuously, it should be replaced immediately.
To get your smoke alarm to stop chirping if you've already changed the battery, first try draining any residual charge by holding the test button down for 15 seconds. If this doesn't solve the problem, clean the unit. A blast of compressed air will often remove the dust particles that are causing the beeps.
Clear Residual Charge to Stop the Chirp
Remove the alarm from your ceiling or wall. Open the cover and take out the battery. Press and hold the test button for 15-30 seconds. This will fully reset the smoke alarm and drain any charge left inside.
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.
If your smoke alarm is chirping or beeping regularly and you have verified that the battery is good, the fire alarm may be faulty, or it may be time to replace it. Many smoke alarms have a set life span of seven to 10 years due to the type of material used for the ionization process.
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.
If your smoke alarms are wired to your home's electrical wiring, simply turning off the circuit breaker will do the trick.
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.