There are a few possible causes for your smoke alarm to keep chirping even with a newbattery. 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 chirping persists after batteryreplacement, a reset can help. Try removing the battery, pressing and holding the test button for 15 to 30 seconds, and then reinserting a new battery.
· When the battery’s power level dips too low, the detector chirps insistently, reminding you it’s time for a change. Many people with hardwired units forget about this backup battery, leading to surprise when the firstalert smoke detector beeping starts. The Fix: Swap out the battery immediately.
· If you replaced a dying battery in your firealarm, inserting new batteries should cause the beeping to stop. If it doesn't, reset the alarm by removing the batteries, pressing and holding the Test button for 15-30 seconds, and reinserting them.
Sometimes, the alarm's processor retains error conditions, such as a weak battery, even after the battery is replaced. Here's how to reset it: Turn off the power to the smoke alarm at the circuit breaker. Remove the smoke alarm from the mounting bracket and disconnect the power. Remove the battery.
· Cause: The battery might be inserted incorrectly, or the terminals may not be properly connected. Quick Fix: Reinsert the battery correctly, ensuring the terminals align properly and the cover is securely closed.
If your alarm is sounding the low-battery “chirp” about once every 30-60 seconds, it’s time to replace your battery. Alarms with (non-sealed) removeable batteries need new batteries around once per year (this may vary by alarm model and battery design)
