Replace the smoke alarm battery
Press and hold the test/reset button
Check whether the alarm needs a new battery type
Clean dust and debris from the alarm
Make sure the battery is installed correctly
Replace the battery cover securely
Check for low-battery chirping versus full alarm sounding
Replace the entire smoke alarm if it is expired
Reset the alarm after changing the battery
Restore power if it is a hardwired alarm
Check the circuit breaker if it is hardwired
Replace the backup battery in a hardwired alarm
Move the alarm away from steam, smoke, or humidity
Replace the alarm if it is malfunctioning