How to reset smoke detector after replacing battery

Table of Contents Show

Houston Homeowner’s Guide On Smoke Alarms
How to Reset Smoke Detectors
How do we stop the smoke detector beeping?
Check that Batteries are Properly Installed
Check for Environmental Conditions Near the Smoke Alarm
Clear Residual Charge
Other Possible Causes of Chirps
Do you have to reset smoke detector after changing battery?
Why does my smoke detector keep chirping even after I change the battery?
How do you reset a hardwired smoke detector after replacing the battery?

Houston Homeowner’s Guide On Smoke Alarms

Your smoke alarm has a standard 9-volt battery back-up that keeps your smoke alarm system working in case you lose power. For the battery back-up to work, however, the battery must be “fresh” and installed properly. To replace the battery, just open the drawer on the side of the alarm. You do not need to remove the alarm from the ceiling.

Resetting your smoke alarms is an important step in your project. If you want to make sure your smoke alarms are going to work right when/if there is a fire then you want to make sure they are reset to go off when needed!

How to Reset Smoke Detectors
These smoke detectors are wired into the electrical system of your home. In addition, there is a 9Volt battery that provides back up if power is lost. The manufacture recommends replacing your 9 Volt battery every six months. If the backup battery weakens in between replacement the smoke alarm will “chirp” about once a minute (the low battery warning). Replace battery immediately for your protection.
Your smoke alarms are interconnected, meaning they communicate with each other, forming an integrated system of protection for your home. If one smoke alarm detects smoke, all interconnected alarms will sound. For example, if the smoke alarm in the basement triggers an alarm, the smoke alarm in your bedroom will also sound.
Electric Smoke Detectors with Battery Backup
Turn off the main breaker in your home’s breaker box to turn off the electrical current running to the smoke detector.
Take the smoke detector off its mounting bracket on the ceiling and disconnect the power cable connected to the smoke detector.
Remove its battery, then press the “Test” button and hold it down for 15 seconds. An alarm will sound brief, then the alarm will silence.
Place the battery in the smoke detector, reconnect the power cable and put the smoke detector back on its mounting bracket. Turn the breaker on. The detector will chirp one time to indicate power was restored to the unit.

Battery-Powered Smoke Detectors
Take the battery out of the smoke detector.
Press the “Test” button and hold it down for 15 seconds. An alarm will sound brief, then the alarm will silence.
Put the battery back in the smoke detector. The detector will chirp one time to indicate the battery is connected.

How do we stop the smoke detector beeping?

A smoke detector or smoke alarm in your home or apartment will beep or chirp if the batteries need to be replaced. The smoke alarm will make this noise to alert you that soon the batteries will be completely dead. When you start to hear the beeping or chirping, replace the battery with the exact same type that is in it. This will reset the smoke detector and will make it stop beeping and chirping. Call (713) 812-7070 us for your home service and repair needs.

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Smoke alarms are a life saver…literally. According to the National Fire Protection Association (NFPA), 3 in 5 fire deaths happen in homes with no smoke alarms or no properly working smoke alarms. For this, and a myriad of other reasons, you should check your smoke alarm regularly to ensure proper operation in the event of an emergency.

One common issue homeowners face is a beeping smoke alarm. Most often, this is due to a battery that requires replacement. But, if you’ve changed the battery in your smoke detector and it still continues to beep, try troubleshooting using some of these tips:

Check that Batteries are Properly Installed

Make sure you’ve used the correct battery type.
Check that the battery is snapped completely in place.
If your smoke alarm has a battery compartment door, check that it is closed completely.

Check for Environmental Conditions Near the Smoke Alarm

Look for humidity, steam and condensation.
Check for excess air flow near the smoke detector, for example, a cooling/heating unit, a ceiling fan, or an open window within three feet of the smoke detector.
Check the temperature of the room. Smoke alarms operate best at 40 degrees to 95 degrees Fahrenheit.

Clear Residual Charge

Some smoke alarms have processors that will retain error codes or residual battery charge, even after you’ve inserted a new battery. Try to clear the residual charge by following these steps:

Unmount the alarm.
Take out the battery.
Press and hold the test button for 15-30 seconds. This should fully reset the smoke alarm and drain any charge left inside.
Replace the battery.
Clean the unit with a microfiber cloth or a can of compressed air. Vacuum the outside of the smoke alarm to remove dust and debris.
Press the test button again. You should hear a loud beep to let you know the alarm is working properly.

For electric smoke detectors with a battery backup:

Turn off your home’s main circuit breaker.
Unmount the alarm and disconnect the power cable connected to it.
Remove the battery, press the test button for 15 seconds. An alarm will sound briefly, then the alarm will silence.
Reinsert the battery, reconnect the power cable and put the smoke detector back on its mounting bracket. Turn the breaker on. The detector will chirp one time to indicate power was restored to the unit.

For battery-powered smoke detectors:

Remove the battery.
Press the test button for 15 seconds. An alarm will sound briefly, then the alarm will silence.
Put the battery back in the smoke detector. The detector will chirp one time to indicate the battery is connected.

Other Possible Causes of Chirps

When all else fails, it might be time to buy a new detector. Check the date of manufacture printed on the back of your alarm to confirm it's not expired. Most alarms expire 7-10 years after the manufacture date.

If these steps don’t yield results, contact your security provider.

Do you have to reset smoke detector after changing battery?

If you have changed the batteries and tried the circuit breaker, but the beeping persists, you may need to try resetting the detector(s): Use the reset button: most smoke detectors have a red reset button. Hold the reset button down for approximately 15-20 seconds.

Why does my smoke detector keep chirping even after I change the battery?

When you change the batteries on your smoke detector, it may chirp for up to 10 seconds. This chirping is normal and signals that the device is receiving fresh power. The same thing may happen to hardwired alarms when you turn on the device's power.