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What does it mean if my smoke alarm keeps beeping?

If your smoke alarm is beeping irregularly the action you need to take will depend on whether your smoke alarm is battery operated, or hard wired:

Battery operated smoke alarm

An intermittent, or irregular beeping usually indicates the battery is low and needs replacing.

  • For the older model of smoke alarm the battery is usually a 9V square battery.
  • The newer models have a lithium battery and cannot be replaced, in this case you will need to buy a new smoke alarm.

Hard wired smoke alarm

An intermittent, or irregular beeping in this case usually indicates a mains supply failure.

  • You can see if this is the case by checking if the small LED light on the smoke alarm is still showing. If it has gone out this is likely to mean that there has been a mains supply failure. You should check your mains fuse board and in the row of switches see if a switch is pointing downwards, if it is, please re-set this by pulling the switch up.
  • Press and hold the reset button on the smoke alarm itself to stop the beeping.

If having taken the above action the irregular beeping continues,please call us on 0300 456 2099 so that we can arrange an appointment for a repair.

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