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Before you call, try our top troubleshooting tips or click here to watch our helpful product tutorials:

1: Remove dust from the alarm using a vacuum cleaner with a soft brush attachment, we recommend repeating this every 3 months. TroubleShoot Tip Icon1
2: Make sure the alarm is rotated clockwise as far as it can go and is securely located on the base plate (this means the battery has been activated). If testing immediately after first activating the alarm, allow 5 seconds for the alarm to settle before testing. TroubleShoot Tip Icon2

If your Carbon Monoxide (CO) Alarm has gone into full alarm, keep calm and open the doors, windows and then immediately turn off all fuel burning appliances.

  • Evacuate the property and ring your gas or other fuel supplier on their emergency number and do not enter the property until the alarm has stopped.
  • When exposed to fresh air it can take up to 10 minutes for the sensor to clear and the alarm to stop depending on the level of carbon monoxide detected.
  • Seek medical advice for anyone suffering from the effects of carbon monoxide poisoning which include; headaches, nausea and flu like symptoms.
  • Do not use the appliances until they have been checked by an expert, in the case of a gas appliance the engineer must be registered on the Gas Safe Register.
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Your alarm continuously checks its sensor and circuitry, if any of these settings are found to be incorrect or if the batteries become low then the detector will emit a single chirp once per minute for 30 days.

  • Replaceable battery products: If the alarm has replaceable batteries then you will need to replace them with new batteries. It is recommended that the batteries are replaced every 12 months in replaceable battery products.
  • Sealed battery products: If you have a sealed battery alarm then please contact Technical Support for further advice.
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If you need to contact us:

Call Us:

Our offices are open:

Weekdays: 8:30am - 5:30pm
Weekends: Closed
Bank Holidays: Closed

Technical Support:

0330 094 5830

all other enquiries:

02477 717 700


Online Chat:



Write to us:

FireAngel Safety Technology Limited,
Sir William Lyons Rd, Vanguard Centre,

Email Us

Research and Development

FireAngel's Technology Centre

We even have a dedicated team responsible for testing products and have made a substantial investment in new test and validation equipment. A smoke alarm goes through over 55 interdependent tests before it passes third party external certification. We are now able to replicate a large number of these in-house. Find out more about these checks and validations that every FireAngel must alarm go through to ensure it's performance and reliability.

View our R&D Facility