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My Smoke Alarms are Beeping

Smoke alarms often beep, chirp or go off loudly when no smoke is present. Each make and model has different audible signals but they are all prone to annoying failures. That’s why the only thing we do not guarantee is smoke alarms. We get many calls for annoyance beeps/chirps on smoke alarms, and about the only thing we can do to solve them is to replace the unit. A licensed electrician is not required for this work, and it can be done safely by anyone because the 120 volt connections are in plugs, located in the ceiling above the unit.

To remove smoke alarm:

  • Turn off power to the alarm at the breaker (some units have battery power only, in which case skip this step).
  • Twist the unit 1/8 turn to release from ceiling mount bracket. If it won’t turn, find and remove the little plastic pin on the side of the unit. See picture below.

This pin must be removed to allow removal of the smoke alarm. It is frequently omitted during installation.

  • Once you’ve twisted the unit, it should come loose. If it is the interconnected type, it will be attached to the 120v feed wires. To detach, squeeze the little ears on the plug on top of the unit, and pull.
Fairfield Electric Victoria BC removing a smoke alarm

Here’s a short video:

  • Remove the battery, if any. Try replacing the battery and reinstalling the unit, this may solve the chirping problem. If not, replace the unit.
Fairfield Electric Victoria BC replacing a smoke alarm battery
Fairfield Electric Victoria BC replacing a smoke alarm battery
Fairfield Electric Victoria BC replacing a smoke alarm battery

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